ML19319C271: Difference between revisions
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BACILLARIOPHYCEA E (Ctatoms) | BACILLARIOPHYCEA E (Ctatoms) | ||
As*erio~til4 fermosa _ g 11 Cyclotolta so. 30 14 8 11 20 28 Cyr-o*coleure sp. 10 14 Femit wia cotansnsis 144 67 140 29 96 45 160 56 F. s;p. 1644 118 1230 42 730 112 18C0 56 | As*erio~til4 fermosa _ g 11 Cyclotolta so. 30 14 8 11 20 28 Cyr-o*coleure sp. 10 14 Femit wia cotansnsis 144 67 140 29 96 45 160 56 F. s;p. 1644 118 1230 42 730 112 18C0 56 | ||
((e199tra lstandle.t 14C4 238 1020 196 576 67 1910 70 72 101 20 28 40 0 Uraculea Naviculoid 12 17 2160 571 1420 168 872 101 1C90 70 S'eoMr.eds us binderscos 48 34 50 70 8 11 60 20 S. teruts . | |||
823 3910 266 2304 202 5630 126 | 823 3910 266 2304 202 5630 126 | ||
~Sut,totat 5484 CHLCROPHYCEAE (Creen Algae) | ~Sut,totat 5484 CHLCROPHYCEAE (Creen Algae) | ||
Latest revision as of 05:03, 16 March 2020
| ML19319C271 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 02/28/1977 |
| From: | Herdendorf C, Reutter J OHIO STATE UNIV., COLUMBUS, OH |
| To: | |
| Shared Package | |
| ML19319C261 | List: |
| References | |
| NUDOCS 8002110738 | |
| Download: ML19319C271 (211) | |
Text
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5 PRE-CPERATIONAL AQUATIC E ECOLOGY MONITORING PROGRAM i FCR THE DAVIS-8 ESSE NUCLEAR E ' POWER STATION, UNIT 1 PROGRESS REFCRT JULY 1 - CECEMBER 31 1976 Prepared by: Jeffrey M. Reutter and Charles E. Herdendorf with the assistance of David L. Bean, Charles A. Scwen, Donald H. Davis, Richard Froelich ..and Lynwcod A. Mac Lean l Prepared for Toledo Edison Company Toledo , Chio Contract No. 1780 l CENTER CCR LAKE ERIE AREA RESEARCH THE CHIO STATE UNIVERSITV COLUMBUS, OHIO February 1977 7001IIo Y
TABLE OF CONTENTS Page L I ST O F TA B L E S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . il L I ST O F FI GU R ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi P ROJ EC T STA F F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vill 0 8 J EC T IVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 P RO C E DU R E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Sampling Station Location ........................... 1 Wate r Qua l i ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 < Plankton............................................. 7 8 e n th o s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Fish ............................................... 9 ReSULTS ...............................................
- 10 Wa t e r Qual ity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . 10 Plankton ........................................... 10 8enthos .......................,.................... 33 Fish ............................................... 38 )
F oo d H a b i t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
)
DISCUSSION............................................. 46 Wate r Qual i ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 P l a n k to n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 B e n th o s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Fish ............................................... 71 Fo o d H ab i ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 L IT ERATU R E C ITED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 . 1 ^ C S m P P P._N OICm ............................................ 82 l A .................................................. 82 8 .................................................. 107 C .................................................. 128 O .................................................. 154
= ..................................................
.e ..................................................
171 190 l I .. - - - . -.
l LIST OF TABLES Page
- Table 1. Aquatic monitoring program sampling dates-1976. . . 5 Table 2. Analytical methods for water quality determinations. . 6 i Table 3. !
Lake Erie water quality analyses for July 1976 . . . 12 Table 4 Lake Erie water quality analyses for August 1976 . . 13 Table 5. Lake Erie water quality analyses for September 1976 14 Table 6. Lake Erie water quality analyses for October 1976. . 15 l Table 7 Lake Erie water quality analyses for November 1976. 16 Table 8. Solar radiation measurements at Locust Point . . . . 17 Table 9. Surface current measurements in Lake Erie at Locust Point . . . . . . . . . . . . . . . . . . . 19 i Table 10. Mean values and ranges for water quality para-meters tested in 1976 . . . . . . . . . . . . . . . 20 j Table 11. Monthly mean populations of individual phytoplankton ] taxa at Locust Po - 1976 . . . . . . . . . . . . 21 Table 12. Monthly mean phytoplankton populations from sampling stations at Locust Point, Lake Erie - 1976 . . . . . 24 , Table 13. Monthly mean populations of individual zooplankton taxa at Locust Point - 1976 . . . . . . . . . . . . 29 Table 14 Monthly mean zooplankton populations from sampling stations at Locust Point, Lake Erie - 1976 . . . . 32
- Table 15. Monthly mean populations of individual benthic macro-invertebrate taxa at Locust Point - 1976 . . . . . . 34
' Page Table 16. Monthly mean benthic reacroinvertebrate populations from sampling stations at Locust Point, Lake Erie
-1976 . . . . . . . . . . . . . . . . . . . . . . . 37 i
Table 17 Species found in the Locust Point area 1963 - 1976 . 39 Table 18. Number of fish collected at Locust Point from April-November 1976 with equal monthly effort with each piece of fishing equipment . . . . . . . . . . . . .. 41 Table 19. Monthly catch of individual fish species at Locust i Point with equal effort using gill nets, shore seine, . and trawls - 1976 . . . . . . . . . . . . . . . . . 42 Table 20. Summary of ichthyoplankton catch per unit effort results at Locust Point . . . . . . . . . . . . . . 43 Table 21. Mean ichthyoplankton catch per unit effort results from the surface and bottom of six samplirg stations at Locust Point, Lake Erie . . . . . . . . . . . . . . 47 Table 22. Ichthyoplankton concentrations from Lake Erie at Toussaint Reef . . . . . . . . . . , . . . . . . . . 48 Table 23. Summary of food habits of fish collected at Locust Point
. . . . . . . . . . . . . . . . . . . . . . . 49 Table 24 Analysis of phytoplankton populaticns at Locust Point, 20 July 1976 . . . . . . . . . . . . . . . . 83 Table 25. Analysis of chytoplankton populations at Locust Point, 18 August 1976 . . . . . . . . . . . . . . . . 87 Table 26. Analysis of phytoplankton populations at Locust Point, 14 September 1976 . . . . . . . . . . . . . 91 Teble 27. Analysis of phytoplankton populations at Locust Point, 19 October 197S . . . . . . . . . . . . . . . 95 I
Table 28. Analysis of phytoplankton pcpulations at Locust Point, 2 November 1976 . . . . . . . . . . . . . . 103 i J (it
Page Table 29. Analysis of . coplankton populatiens at Locust Point, 20 July 1976 . . . . . . . . . . . . . . . 108 Table 30. Analysis of socplankten populations at Locust Point, 18 August 1976 . . . . . . . . . . . . . . 112 Table 31. Analysis of sccplankton populations at Locust Point, 14 September 1976 . . . . . . . . . . . . 116 Table 32. Analysts of rocplankten populations at Locust Point, 19 October 1976 . . . . . . . . . . . . . 120 Table 33. Analysis of =ccplankton populations at Locust Point, 2 November 1976 . . . . . . . . . .'. . . 124 Table 34 Analysis of benthic macroinvertebrate populations at Locust Point, 5 July 1976 . . . . . . . . . . . 129 Table 35. Analysts of benthic macroinvertebrate populations at Locust Point, 8 August 1976 . . . . . . . . . . 134 Table 36. Analysis of benthic macroinvertebrate populations at Locust Point, 3 September 1976 . . . . . . . . 139 Tabte 37. Analysis of benthic macroinvertebrate populations at Locust Point, 5 October 1976. . . . . . . . . . 144 Table 38. Analysis of benthic macroinvertebrate populattens at Locust Point, 1 November 1976 . . . . . . . . 149 Table 39. Gill net catch per unit effort at Locust Point, 2 4-15 July 1976 . . . . . . . . . . . . . . . . . 155 Table 40. Gill net catch per unit effort at Locust Point, 11-12 August 1976 . . . . . . . . . . . . . . . . 157 Table 41. Gill n'et catch per unit effort at Locust Point, 30 September - 1 October 1976 . . . . . . . . . ., 159 Table 42. Gill ret catch per unit effort at Locust Point, 4-5 November 1976 . . . . . . . . . . . . . . . 161
Page Table 43. Shore seine catch per unit effort at Locust Point, 7 July 1976 . . . . . . . . . . . . . . . . . . . 162 Table 44 Shore seine catch per unit effort at Locust Polnt, 10 August 1976 . . . . . . . . . . . . . . . . . . 163 ] Table 45. Shore seine catch per unit effort at Locust Point,
! 20 September 1976 . . . . . . . . . . . . . . . . 164 ; Table 46. Shore seine catch per unit effort at Locust Point, 15 October 1976 . . . . . . . . . . . . . . . . . 165 Table 47. Shore se[ne catch per unit effort at Locust Point, 15 November 1976 . . . . . . . . . . . . . . . . 166 Table 48. Trawl Catch per unit effort results between stations 8 and 13 at Locust Point, July - November, 1976. . 167 Table 49. Hoop net catch per unit effort in Northwest marsh ;
(station 21), July-October 1976. . . . . . . . . . . 169 ; Table 50. Hoop net catch per unit effort in Southeast marsh (station 22) July - October (1976) . . . . . . . . 170 Table 61. Ichthycplankton catch per unit effort at Locust Point, 8 July 1976 . . . . . . . . . . . . . . . 172 Table 52. Ichthyoplankton catch per unit effort at Locust Point, 23 July 1976 . . . . . . . . . . . . . . . 176 Table 53. Icthycplankton catch per unit effort at Locust Point, 29 July 1976 . . . . . . . . . .-. . . . . 176 Table 54 Ichthyoplankton catch per unit effort at Locust Point, 9 August 1976 . . . . . . . . . . . . . . . 181 Table 55. Ichthyoplankton catch per unit effort at Locust Point, 20 August 1976 . . . .'. . . . . . . . . . 184 Table 56. Ichthyoplankton catch per unit effort at Locust Point, 31 August, 1976. . . . . . . . . . . . . . 187 i Table 57. Stomach content of fish collected at Locust Point c April-November 1976. . . . . . . . . . . . . . . 191 i I v
!, IST OF FIGURES j Page i Figure 1. Biological sampling stations at the Davis-eesse nuclear power station . . . . . . . . . . . . . . 2 Figure 2. Revised sampling stations at the Davis-8 esse nuclear power station . . . . . . . . . . . . . . 4 Figure 3. Reefs near Locust Point. . . . . . . . . . . . . . 11 i Figure 4 Monthly mean phytoplankton populations for Lake , Erle at Locust Point, 1974 - 1976. . . . . . . . . 25-Figure S. Monthly mean Bacillaricphyceae, Chlorophyceae, and Myxochyceae populatfor.s for Lake Erie at Locust Point, 1976. . . . . . . . . . . . . . . . . . . . 26 Figure 6. Mean benthic macrotnvertebrate populations at var-lous distances from the origin of the four sampling transects - 1976 . . . . . . . . . . . . . . . . . 36
, Figure 7. Mean monthly hydrogen lon, temperature and dis-solved oxygen measurements for Lake Erie at Locust Point during 1976 . . . . . . . . . . . . . 55 Figure 8. Mean monthly turbidity, suspenoed solids and transparency measurements for Lake Erie at Locust Point during 1976. . . . . . . . . . . . . . . . . 56 Figure 9. Mean monthly alkalinity, dissolved solids and con-ductivity measurements for Lake Erie at Locust Point during 1976. . . . . . . . . . . . . . . . . 58 Figure 10. Mean monthly calcium, chloride and sulfate con-centrattors in Lake Erie at Locust Point during 1976. 59 Figure 11. Mean monthly nitrate, phosphorus and silica cen-centrations in Lake Erie at Locust Point during 1976. 60
)
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Page Figure 12. Trends in mean monthly temperature, dissolved oxygen, and hydecgen ton measurements for Lake Erie at Locust Poi.it for the period 1972-1976 ..................... 62 Figure 13. Tr ends in mean monthly conductivity, aikalinity and turbidity measurements for Lake Erie at Locust Point for the period 1972-1976 . . . . . . 63 Figure 14 Trends in mean monthly transparency and phos-phorus measurements for Lake Erie at Locust Point for the period 1972-1976 . . . . . . . . . . 64 Figur e 15. Monthly mean Bacillariophyceae, Chlorophyceae, and Myxophyceae pcpulations for Lake Erie at Locust Point - 1974 . . . . . . . . . . . 4 . 66 Figure 16. Monthly mean Bacillariophyceae, Chlorophyceae, and Myxophyceae pcpulations for Lake Erie at Locust Point - 1975 . . . . . . . . . . . . . . 67 Figure 17. Monthly mean zooplankton populations for Lake Erie at Locust Point, 1972-1976. . . . . . . . . . 69 Figure 18. Monthly mean rotifer populations for Lake Erie. at Locust Point, 1972-1976. . . . . . . . . . . . 70 Figure 15. Monthly mean copepod populations for Lake Erie at Locust Point, 1972-1976 . . . . . . . . . . . 72 < Figure 20. Monthly mean cladoceran populations for Lake Erie at Locust Point, 1972-1976 . . . . . . . . . . 73 Figure 21. Monthly mean benthic macroinvertebrate poou-lations for Lake Erie at Locust Point, 1972-1976. . 74 5 I vii
l i PROJECT STAFF . Charles E. Herdendorf - Principal Investigator; Analysis of Water Quality and Physical Parameters Jeffrey M. Reutter - Co-Principal Investigator; Analysis of 4 Biological Parameters Margarita Apantus - Statistical and Clerical Aid i David L. Bean - Plankton Identification Charles A. Bowen - Field Sampling and Ichthyoplankten Identification C. Lawrence Cooper - Ichthyoplankton Sampling and Identification from Toussaint Reef Donald H. Davis - Head of Sampling Team and Ichthyoplankton Identification < Jo Ann Franks - Secretarial Services Richard Froelich - Collection and Identification of Benthic Macroinvertebrates John Hansley - Statistical and Clerical Aid
] Michael R. Heniken - Ichthyoplankton Sampling and Identification from Toussaint Reef Carolyn S. Jenkinson - Administrative Assistance Theresa M. Karpinec: - Secretarial Services Lynwood A. MacLean - Field Sampling and Identification of Fish Stomach Contents i
l l l viil _ ___ _ _ _ , __
I OBJECTIVE The purpose of-this investigation is to ascertain the existing character of the aquatic ecosystem at Locust Point, Lake Erie prior to operation of the Davis-8 esse Nuclear Power Station, Unit 1. Included in the assessment are studies of existing plankton, benthos , and fish populations and water quality and recent trends in these parameters . The report contained herein is for the period 1 July to 31 December 1976. PROCEDURE Sampling Station Location In 1974 and 1975 field data were collected frcm 25 stations, 18 alorg 4 transects in the open take, 2 statfor.s in the intake canal, 2 stations in the marshes, and 3 stations along the shoreline (Fig. 1). Of the 4 transects, one followed the intake conduit, one the discharge condult, while control transects were set up on the east and west sides of the entire intake and discharge complex. Control west ran due north from the shore-end of the intake conduit with sampling stations located at 500 ft (150 m) (Station 1), 1000 ft (300 m) (Station 2), 2000 ft (610 m) (Statien 3), and 3000 ft (910 m) (Station 4) from the shoreline. Sampling stations on the intake were located at 500 ft (150 m) (Station 5), 1000 ft (3C0 m) (Station 6), 2000 ft (610 m) (Station 7), 3000 ft (910 m) (Statien 8, pecposed intake), and 4000 ft (1,220 m) (Station 9) from shore. Along the discharge transect sampling stations were at distances of 500 ft (150 m) (Station 10), 1000 ft (300 m) (Station 11), 1500 ft (460 m) (Station 12, proposed discharge), 2000 ft (610 m) (Station 13), and 3000 ft (910 m) (Station 14) from shore. Additional stations were placed 500 ft (150 m) due north of Station 12 (Station 15) and 500 ft (150 m) south of Station 12 (Station 16). Control east ran perpendi-cular to the shoreline, parallel to the intake, and approximately 2500 ft (760 m) east of the intake. Stations were located 500 ft (150 m) (Station 17) and 1000 ft (3C0 m) (Station 18) from shore. Station 19 was located in the center of the intake canal, 10C0 ft (300 m) from the lake shore. Sampling at Station 20 discontinu?d when it was drained of all water in 1974 Stations 21 and 22 were located in the northwest and southeast marshes, respectively. Sta-
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RE 1 eleLOGICAL SAMPLING ST NS
3 tiens 23 - 25 were on the shcreline at the intersecticn of the intake conduit and 1500 ft (460 m) to either side. In 1976 this sampling format was altered slightly to arswer ques-tiens which arose following the 1975 field seascn concerning the intake and discharge (Fig. 2). This new station arrangement will provide much more valuable information following operation, and, by initiating it in 1976, ene year of pre-cperational data can be obtained. Statlens 2,4,5,10,19 and 20 were eliminated and Station 26 to 29 were added. Station 26 is on the control west transect and located 3800 ft (1,'170 m) from its intersec-tion with the shoreline. Staticn 26 serves as a centrol station SOCO ft (910 m) northwest of Station 8 (Intake) and the same distance offshore as Station 8 (3000 ft). Station 28 is en the discharge transect 4,5CO ft (1,380 m) from its intersection with the shoreline. Station 28 also serves as a centrol station for Station 8 as it is 3000 ft (910 m) south-east of Station 8 and equidistant offshore. Station 27 is the mirror image of Staticn 18, with respect to the discharge trarsects and ccm-pletes a symetrical arrangement cf staticrs around the predicted thermal plume . Station 29 provides a centrol 3C00 ft (910 m) southeast of Sta-tien 13 (plume area). Station 3 is the control to the northwest of Sta-tion 13. Stattors 3, 13, and 29 are approximately equidistant fecm shore. Water Quality Twenty water quality and related parameters were measured reu-tinely (Table 1) during the !ce-free period cf July to December 1976 (July through November) at three Lake Erie sampling stations (1,8, and
- 13) in the vicinity of Locust Point (Fig. 2).' These parameters and the analytical methcds employed for the measurements are listed in Table 2.
Field Measurements. Water quality measurements were made monthly in the field at Stattors 1,8, and 13 (Fig. 2). Temperature , dissolved cxygen and ccnductivity were measured frcm a small survey boat with submerged sersors and shipboard readout meters. Dissolved oxygen was determined with a YSI model 51 meter and conductivity with a Beckman R83-3341 solubridge temperature-ccmpensated meter; each meter was equipped with a thermistcr for temperature readings. i I i I
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REVISED SAMPLING STATIONS AT THE DAVIS-BESSE NUCLEAR POWER STATION
TABLE 1 AQUATIC MONITORING PROGRAM SAMPLING DATES - 1976
- SAMPLE March April May June July Aug Sept Oct Nov PLANKTON 18 14 17 16 20 18 14 10 2 i
BENTHOS 18 0 4 7 5 5 3 5 1 FISH Gill Net 12-13 10-11 14-15 14-15 11-12 30-1 4-5 Shore Seine 6 5 10 7 10 20 15 15 g Otter Trawl to 13 17 16 20 13 12 2 Hoop Net 6-7 5-6 10-11 7-8 G-10 20-21 28-20 Fry Net 6,14,30 10,17,27 11,17,28 8,$3,20 0,20,31 WATER QUALITY 18 14 17 16 20 18 14 10 2 CURRENTS 18 SOLAR RADIATION O 20 4 30 10 1 1 i ) , i
i l TABLE 2 .
, ANALYTICAL METHODS FOR WATER QUALITY DETERMINATIONS Parameter Units References for Analytical Methods
- 1. Temperature OC APHA (1971): Sec. 162
- 2. Dissolved oxygen ppm APHA (1971): Sec. 2188
- 3. Conductivity umhos/cm (250C) ASTM (1073): D1135-64
- 4. Transparency meters Welch (1948): Secchi disk
- 5. Calcium (Ca) mg/l APHA (1971): Sec. 110C
- 6. Magnesium (Mg) mg/l -
APHA (1971): Sec. 122B
- 7. Sodium (Na) 'mg/l ASTM (1973): D1428-64
- 8. Chloride (Cl) mg/1- APHA (1971): Sec. 1128
- 9. Nitrate (NO3) m0/1 ASTM (1973): D902-71 10 Sulfate (SO4 ) mg/l ASTM (1973): D516-68C m
- 11. Phosphorus (Total as P) mg/l APHA (1971): Sec. 223F
- 12. Silica (SiO2) mg/l ASTM (1973): D850-688
- 13. Alkalinity (Total as CACO 3) mg/l APHA (1971): Sec. 102
- 14. Blochemical oxygen demand mg/l APHA (1971): Sec. 219
- 15. Suspended solids mg/l APHA (1971): Sec. 224C
- 16. Dissolved solids mg/l USEPA (1971)
, 17. Turbidity F.T.U. APHA (1971): Sec. 163A
- 18. Hydrogen-lon conc. pH units ASTM (1973): D1293-65 .
- , Field Procedure i
10 Solar radiation . j_: amps Kahl Scientific Instrument Corp. sub- ! marine photometer model 15M2-02
- 20. Currents cm/sec Surface drift drogue
. i
7 Sensor readings were taken 10 cm below the surface and aoproximately 50 cm above the bottom. Transparency was determined with a 30 cm diameter Secchi disk lowered on a marked line until it was no longer visible. Solar radiation was measured at four stations with a Kahl Scientific Instrument Corp. submarine photometer, model no. 15M2-02, at the surface and at one-half meter depth intervals. This meter mea-sures the amount of sunlight, expressed as an electrical current, reach-ing various depths. Surface currents were measured in August at two stations with a drift drogue. Laboratory Determinations. __ Surface and bottom (50 cm above) water samples were taken at Stations 1,8, and 13 with a G-liter Kemmerer sampler at the same time that field measurements were being made. Dese samples were placed in polyethylene containers and taken to the laboratory for analysis; in most cases, analyses were completed within 24 hours of the sampling time. Fifteen water quality parameters (Table 2) were determined in the laboratory using the pro-cedures prescribed in " Standard Methods for the Examination of Water, 13th Edition" (American Pubite Health Association, 1971) ahd in " ASTM Standards, Part 23, Water" (American Society for Testing and Materials, 1973). Plankton Plankton was sampled monthly, July through November of 1976 (Table 1), frem 12 stations in the vicinity of Locust Point. Duplicate vertical tows, bottom to surface, were taken at each station with a Wisconsin plankton net (12 cm mouth; O.080 mm mesh). Each sample was concentrated to 50 ml and preserved in 5% formalin. On several occasions, due to large phytoplankton populations, it was necessary to further dilute the sample to insure accurate counting. An equal f volume of sugar was added to the formalin which was added to the sample to reduce distortion of zooplankters. The volume of each sam-pie was computed by multiplying the length of the tow by the area of the net mouth. The mean and standard deviation were computed for
, each station from the duplicates. In previous years the standard devia-
- tion was computed using "n" as the J! visor, in 1976 "n-1" was used.
Chengalath et al. (1971), Collins and Kalinsky (1972), Eddy and Hodson (1964), Ewers (1930), Jahoda (1948), Pennak (1953), Taft and Taft (1971), Torke (1974), and Ward and Whipple (1959) were used in plank-ton identification.
8 l l Phytoolankton . Three 1-ml allquots were withdrawn from each sample and pla2ed in Sedgewick-Rafter counting cells. Whole organ-Ism counts (or.e colony or filament = 1 organism) were made from 25 o random Whipple disk fields from each 1-ml aliquot in the Sedgewick-Rafter counting cell. When filamentous forms numbered 100 filamenh or more in 10 Whipple fields, they were not counted in the remaint_ng
; 16 fields. Identification was generally to the genus level. Results were reported as number of whole organisms /1.
Zoool5tnkton. Three 1-ml allquets were withdrawn from each sample and placed in Sedgewick-Rafter cells. The entire cell was scanned under a microscope at 60x while counting and identifying all zoeplankters. Individuals were generally identified to the genus or species level and reported as number of organisms /1. Analytical Methods. Correlation coefficients for the Sacillariophy-ceae, Chlorophyceae, Myxophyceae, total phytcplankton, Rotifera, Cope-poda, Cladocera, total zooplankton and ,several water quality parameters will be computed on an IBM 360 ccmputer using the " Statistical Analysis System" (SAS) program which ccmputes these statistics by the method of least squares (Service, 1972). As in 1975, these and other analyses will be presented in the semi-annual report following the actual field season. Benthos Benthos was sampled monthly, July through November (Table 1) from 18 stations in the vicinity of Locust Point. Three replicate sam-ples were tak?n at each station with a Ponar dredge (A = 0.052 m2 ). Samples were sleved through a U.S. #40 sieve, ! preserved in 10% for-malin and returned to the laboratory. Individuals were identified as far as possible (usually to genus; to specles where possible). The num-ber of individuals per square meter was calculated for each of the three replicates by multiplying the number counted in the sample by 19.1. The sample mean and standard deviation (n-1 as a avisor) for each sta-tion were then computed from the 3 replicates. Brinkhurst (1963), (1964), (196'5), Brinkhurst, Hamilton, and Herrington (1968), Klerrm (1972), Mason (1973), Pennak (1953), Stein (1962), Usinger (1956), Walter and Burch (1957), and SNard and Whipple (1959) were used for the indentifi-cation of benthic macroinvertebrates. 1 1 l l
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r 1 9 i Fish i Fish populations at Locust Point were sampled by 5 methods, gill nets, shore seine, trawl, hoop nets, and fry net, frcm July through November 1976 (Table 1). All fish captured were weighed, measured, and identified to spec!es (Trautman, 1957 and Bailey et al. , I 1970). Results were reported as catch per unit effort (CPE). Gill nets. Experimental gill nets were set parallel to the intake and discharge pipelines at Stations 8 and 13. Each net (125 ft x 6 ft l or 38 m x 1.8 m) consisted of five 25 ft x 6 ft (7.6 m x 1.8 m) con-tiguous panels [1/2"(1.3 cm), 3/4"(1.9 cm),1"(2.5 cm),1-1/2"(3.8 cm), j 2 "(5 .1 cm) bar mesh]. The nets were 'ftshed for approximately 24 hours i monthly. Due to' unfavorable weather conditions the nets could only be
- fished on one occasion during September-October. One unit of effort consisted -of one 24-hr set with one of these gill nets. The direction of fish movement or migration was determined by recording the direction from which the fish entered the gill. nets. The direction of travel could l not be determined for fish which fell out of the net prior to sorting.
i Shore seine. Shore setning was acccmplished monthly with a 7 100-ft (30.5 m) bag seine (1/4" or 6 mm bar mesh) at Stations 23, 24, and 25. The seine was stretched perpendicular to the shoreline until
; the shore brail was at the water's edge. The far brail was then dragged through a 90o arc back to shore. Two hauls were made at each station.
One unit of effort consisted of two hauls with the above mentioned seine. 1 Trawl. A 16-ft (4.9 m) trawl was used to collect fish for CPE ) , estimates of abundance and to obtain live fish for stomach analysis. Four 5-min tows between the intake (Station 8) and the discharge (Sta-tion 12) were completed monthly. All four trawls were considered to be one unit o' effort. Stomachs were taken from a representative num-ber of these -ish and preserved in 5-10% formalin prior to analysis. Hoop nets. Hoop nets, 2.5 ft (0.8 m) diameter with 1 in (2.5 cm) bar mesh, were set at Station 21 and 22 in the northwest and southeast j marshes . The nets were fished for approximately 24 hours monthly. I One unit of effort consisted of a 24-hr set with one net. These fish f were identifled, weighed, measured and released. Ice in the marsh ] prevented sampling in November. 1 i j Fry ret. A O.75-m diameter oceanographic plankton net (no. 00, 0.76 mm mesh) was used to capture ichthyoplankton (fish larvae or fry, and eggs). i !ve-min circular tows, surface and near-bottom, around 4 4 m.---r, - . - < -,-y --m.----..c -
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10 l Stations 3, 8 (intake), 13 (plume area), 26, 28 and 29 were completed 3 times per month in July and August. Sampling was terminated at
- the end of August after two sampling dates yielded a total of 4 larvae.
Additional 5-min tows, surface and near-bottom, were made on 5 4 occasions during July and August at Toussaint Reef (Fig. 3). One 5-min tow constituted one unit of effort. The net was eculpped with a flow meter to allow computation of the volume of water filtered. Although results were presented to CPE to be comparable with previous results, knowledge of the volume filtered wtti allow computations of lar-vae per unit volume of water. Icthyoplankton was preserved in 5% for-matin and analyzed under a dissecting microscope. Individuals were identified as far as possible (generally species) using Fish (1932) and Norden (unpublished). RESULTS Water Quality The results of the monthly water quality determinations at Stations 1,8, and 13 are given in Tables 3-7. Solar radiation measurements for 4 Stations 3,8,13 and 14 are given in Table 8 and current measurements at Stations 8 and 13 are listed in Table 9. The mean values and ranges of water quality determinations for March thrcugh Jane and July through November 1976 are shown in Table 10. Plankton Phyt oplankton . Phytoplankters collected March thrcugh November 1976 were divided into 91 taxa, generally to the genus level (Table 11). Twenty-seven taxa were placed in 8acillariophyceae, 41 In Chlorophy-peae, 2 in Chrysophyceae, 4 in Dinophyceae, and 16 in Myxcphyceae. One taxa was also placed in Protozoa because it was counted in the Whipple fields with the phytoplankters, i Monthly mean phytoplankton populations ranged from 1,604/1 in June to 103,209/l in April (Table 12). The mean population frem all samples collected during 1976 was 27,871/1. Population pulses were observed in April, July-August, and Octcber (Fig. 4). The April pulse (103,209/1) and the October pulse (70,129/l) were dominated by Bacillariochyceans, while the July-August pulse (87,260 and 83,646/1) was dominated by Myxophyceans (Fig. 5). Individual station populations ranged from 1, COO /l at Station 14 in June to 149,117/1 at Station 1 in July (Taole 12). 1
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TABLE 3 LAKE ERIE WATER QUALITY ANALYSES FOR JULY 1976 Dates: Field 20 July 1976 Laboratory 21 July 197i 4 Parameters { Station No. 1 I Station No. 8 Station No. 13 I RanDe. Mean l Standard Surface Bottom Surface Bottom Surface Bottom Deviation Field Measurements: i Temperature ( C) 22.0 22.0 22.0 22.0 22.0 22.0 0 22.0 0.0 Dissolved Oxygen (ppm) 7.7 5.0 7.2 6.4 7.7 7.0 5.0-7.7 6.8 1.02 Conductivity (umhos/cm) 280 280 275 275 275 275 275-280 277 2.6 l Transparency (m) 0.75 1.10 0.95 0.75-1.10 0.93 O.18 Depth (m) 2.0 4.1 3.2 2.0-4.1 3.1 1.1 Laboratory Determinations: b Calcium (mg/l) 33.6 34.0 33.2 34.4 33.2 33.2 33.2-34.4 33.6 0.5 Magnesium (.ng/l) 10.1 9.8 10.3 9.1 9.8 9.4 9.1-10.3 9.8 'O.4 , Sodium (mg/l) 12.1 12.1 12.1 11.9 12.1 12.1 11.9-12.1 12.1 0.08 Chloride (mg/l) 20.0 20.0 20.0 19.5 20.3 20.0 19.5-20.0 20.2 0.5 Nitrate (mg/l) 6.1 5.1 5.5 5.1 5.5 4.8 4.8-6.1 5.4 0.5 Sulfate (mg/1) 28.0 28.0 20.0 26.5 26.0 26.0 26.O-29.O 27.3 1.3 Phosphorus (mg/l) 1.30 0.05 0.04 0.06 0.05 0.05 0.04-1,30 0.26 0.51 Silica (mg/l) 0.33 0.30 0.44 0.40 0.30 0.33 0.30-0.44 0.35 0.06 ! Total Alkalinity (mg/1) 94 97 92 92 91 92 91-97 93 2 B .O.D. (mg/l) 4 4 4 4 3 3 3-4 3.7 0.5 Suspended Solids (mg/l) 2 1 2 1 4 3 1-4 2.2 1.2 Dissolved Solids (mg/l) 160 16'2 158 162 142 146 142-162 155 8.7 Turbidity (F.T U.) 6 5 3 3 6 7 3-7 5 1.7 j pH 8.9 8.6- 8.7 8.7 8.8 8.6 8.6-8.9 8.7 0.1 l Conductivity (umhos/cm) 315 315 305 305 302 300 300-315 307 6.5 i
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TABLE 5 LAKE ERIE WATER QUALITY ANALYSES FOR SEPTEMBER 1976 Dates: Field 14 September 1976 Laboratory 15 September 1976 Paramete rs Station No. 1 Station No. 8 Station No. 13 Range Mean Standard Surface Bottom Surface Bottom Surface Bottom Deviation Field Measurements: Temperature ( C) 10.5 18.0 10.5 18.0 19.5 18.0 18.O-19.5 18.8 0.8 Dissolved Oxygen (ppm) 9.5 9.3 9.4 8.6 9.2 8.4 8.4-0.5 9.1 0.5 Conductivity (umhos/cm) 250 250 250 250 250 250 0 250 0 Transparency (m) O.55 0.80 0.65 0.55-0.80 O.67 O.13 Depth (m) 1.9 4.4 3.3 1.9-4.4 3.2 1.3 Laboratory Determinations: Calcium (mg/1) 32.0 32.0 32.0 32.0 32.0 32.0 0 32.0 0 viagnesium (mg/l) 7.7 7.7 7.7 7.7 7.7 7.7 0 7.7 O Eodium (mg/l) 10.1 10.5 10.5 10.2 10.2 10.2 10.1-10.5 10.3 0.2 Chloride (mg/l) 16.0 15.0 16.0 16.0 16.5 16.0 16.0-16.5 16.08 0.2 Nitrate (mg/l) 0.3 0.6 0.9 0.3 0.6 0.0 0.3-0.0 0.6 0.3 Sulfate (mg/l) 20.0 20.0 20.5 20.5 20.0 20.0 20.0-20.5 20.2 0.3 Phosphorus (mg/l) 0.01 0.15 0.01 0.02 0.01 0.01 0.01-0.15 0.04 0.06 Silica (mg/1) 0.13 0.06 0.10 0.06 0.06 0.06 0.06-0.13 0.08 0.03 Total Alkalinity (mg/l) 100 100 102 104 90 96 00-104 90 5 3.O .D. (mg/l) 4 4 3 3 3 3 3-4 3.3 0.5 Suspended Solids (mg/l) 7 0 4 6 6 10 4-10 7 2 Dissolved Solids (mg/l) 108 210 170 214 170 170 170-214 189 21 Turbidity (F .T.U .) 9 7 7 10 7 10 7-10 8.3 1.5 3H 8.4 8.3 8.2 8.3 8.5 8.3 0.2-8.5 0.3 0.1 Conductivity (umhos/cm) 255 255 255 255 255 255 0 255 0
TABLE e LAKE ERIE WATER QUALITY Ar% LYSES FOR OCTOBER 1976 Dates: Field 19 october 1976 Laboratory 20 October 1976 Paramete rs Station No. 1 Station No. 8 Station No. 13 Range M6an Standard Surface Bottom Surface Bottom Surface Bottom Deviation Field Measurements: Temperature ( C) 8.5 8.5 9.0 9.0 0.5 8.5 0.5-9.0 8.7 0.3 Dissolved Oxygen (ppm) 11.6 11.6 11.6 11.2 11.6 11.6 11.2-11.6 11.5 0.2 Conductivity (umhos/cm) 270 270 255 255 260 260 255-270 262 7 Transparency (m) 0.65 0.80 0.65 0.65-0.80 0.70 0.09 Depth (m) 1.7 4.3 2.3 1.7-4.3 2.8 1.4 Laboratory Determinations: Calcium (mg/l) 32.0 33.2 31.6 31.6 33.2 32.0 31.6-3'3.2 32.4 0.8 Magnesium (mg/l) 7.7 7.4 7.7 7.4 7.4 8.2 7.4-8.2 7.6 0.3 Sodium (mg/l) 10.0 10.0 0.0 9.0 9.0 9.0 9.O-10.0 9.3 0.5 Chloride (mg/l) 17.3 17.5 16.0 15.8 16.5 16.8 15.8-17.5 16.7 0.7 Nitrate (mg/l) 0.5 0.8 1.2 0.5 0.3 0.5 0.3-1,2 0.6 0.3 Sulfate (mg/l) 22.5 21.5 20.5 22.0 21.5 22.5 20.5-22.5 21.8 0.8 Phosphorus (mg/l) 0.02 0.04 0.04 0.04 0.02 0.06 0.02-0.06 0.04 0.00 Silica (mg/l) 0.06 0.06 0.06 0.10 0.10 0.10 0.00-0.10 0.08 0.02 Total Alkalinity (mg/1) 90 90 88 90 90 92 88-92 90 1.3 B .O . D. (mg/l) 4 4 2 2 3 4 2-4 3.2 1.0 Suspended Solids (mg/l) 20 27 12 9 17 26 9-27 18.5 7.3 Dissolved Solids (mg/l) 177 174 160 168 162 176 160-177 169.5 7.3 Turbidity (F .T .U .) 8 9 6 7 9 9 6-9 8 1.3 pH 8.8 8.9 8.8 8.8 8.9 8.7 8.7-8.9 8.8 0.08 Conductivity (umhos/cm) 240 249 228 233 233 238 228-249 237 7.3
TABLE 7 LAKE ERIE WATER QUALITY ANALYSES FOR NOVEMBER 1976 Dates: Field 2 November 1976 Laboratory 3 November 1976 Parameters Station No. 1 Station No. 8 Station No.13 RanDe Mean Standard Surface Bottom Surface Bottom Surface Bottom Deviation Field Measurements: Temperature ( C) 0.0 6.0 5.0 5.0 5.0 5.0 5.0-6.0 5.3 0.5 Dissolved Oxygen (ppm) 12.2 12.2 12.0 12.1 12.2 12.2 12.0-12.2 12.15 0.08 Conductivity (umhos/cm) 240 240 240 240 240 240 0 240 0 Transparency (m) 0.35 0.50 0.60 0.35-0.60 0.48 0.13 Depth (m) 1.5 4.0 2.2 1.5-4.0 2.6 1.3 Laboratory Determinations: Calcium (mg/l) 31.2 31.2 31.2 31.2 31.2 31.2 0 31.2 O MaOnesium (mg/l) 7.7 7.7 7.7 7.7 7.7 7.7 0 7.7 O Sodium (mg/l) 7.6 7.6 7.1 7.1 7.1 7.1 7.1-7.6 7.3 0.3 Chloride (mg/l) 13.6 13.0 13.0 13.0 13.0-12.5 12.5-13.6 13.02 0.4 Nitrate (mg/l) 1.2 1.2 1.2 1.5 2.1 0.9 0.9-2.1 1.4 0.4 Sulfate (mg/l) 20.0 19.0 19.0 19.0 19.0 19.0 19.O-20.0 19.2 0.4 Phosphorus (mg/l) 0.04 0.04 0.04 0.02 0.02 0.02 0.02-0.04 0.03 0.01 Silica (mg/l) 0.08 0.05 0.03 0.03 0.03 0.03 0.03-0.08 0.04 0.02 Total Alkalinity (mg/l) 92 93 91 90 89 90 89-93 91 1.5 B .O . D . (mg/l) 3 3 2 2 2 2 2-3 2.3 ' 0.5 Suspended Solids (mg/l) 30 ~41 18 23 24 19 18-41 27 10 Dissolved Solids (mg/l) 136 146 142 140 140 142 136-146 141 3 Turtidity (F.T U .) 23 19 15 13 17 13 13-23 16.7 3.9 pH 8.2 7.9 8.1 8.1 8.2 8.4 7.9-8.4 0.2 0.2 Conductivity (umhos/cm) 248 248 230 230 230 230 230-248 236 9. 3
17 t l TA8LE 8 i " SOLAR RADIAT!ON MEASUREMENTS AT LOCUST POINT 1 Depth Sta 3 Sta 8 Sta 13 Sta 14 l Cate: 4 August 1976; 1111-1235 hrs. J Ceck 1320 4600 3100 Surface b 500 4400 2720 { O.5 475 3200 1800 1.0 375 1900 1200 1.5 280 900 550 2.0 173 420 200 2.5 127.5 175 80 3.0 .73 97.5 Date: 30 September 1976; 1243-1442 hrs. Deck 3000 2580 2100 3920 Surface b 1880 1610 1500 3200 0.5 840 810 680 1500
- 1.O 400 430 290 720 1.5 179 184 100 360 2.0 84 86 43 70 2.5 40 46 16 31 3.0 14.9 19.8 13 3.5 7.3 11.4
; 4.0 6.0 Date: 19 October 1976; 1135-1203 hrs.
Deck 2020 3400 Surfaceb 1350 2000 0.5 900 750 1.0 380 190 1.5 177 80 2.0 85 20 2.5 40 7.5 3.0 16.5 3.0 3/5 8.5 l 4;O 4.5 i i i
iv TABLE 8 (CO N'T. ) .' a SOLAR RADIATION MEASUREMENTS AT LOCUST POINT Deoth Sta 3 Sta 8 Sta 13 Sta 14 Date: 1 November 1976; 1115-1230 hrs. Ceck b 630 770 700 Surface 620 720 670 0.5 280 540 300 1.0 148 320 162 1.5 70 180 70 2.0 15.6 125 17 2.5 4.5 62 4.2 3.0 1.0 27 3.5 13 4.0 5.8 a measurements taken with a Kahl Scientific Instrument Ccep. submartr.e photometer, model no. 15M2-02 with readir.gs expressed 'n micreamps ( pamps ) b Photocell awash, approximately 1 cm depth t i 1 l l
19 I TABLE 9 SURFACE CURRENT MEASUREMENTS IN LAKE ERIE - AT LOCUST POINT : AUGUST 1976 ~ i Velocity Direction Cate/ Time Station No. (cm/sec) (compassO L 8-18-76/1.100 13 9.2 180 8-18-76/1215 8 10.9 180 4 6 s
TABLE 10 MEAN VALUES AND RANGES FOR WATER QUALITY PARAMETERS TESTED IN 1976 March-June 1976 July-November 1976 PARAMETER Mean Range Mean Range Units . Temperature 11.3 1.5-22.0 .5.4 5.O-22.0 C Dissolved oxygen 10.2 8.,-12.5 0.5 5.O-12.2 ppm Conductivity 288 250-360 254 240-280 jamhos-cm l Transparency O.4 0.1-1.0 0.76 0.35-1.30 m Calcium 40.0 33.2-54.8 32.1 31.2-34.4 mg/l Magnesium 8.8 6.2-11.5 8.0 7.2-10.5 mg/l Sodlum 11.2 10.0-14.8 9.7 7.1-12.1 m0/l Chloride 19.0 15.5-22.0 16.4 12.5-20.8 mg/l Nitrate 10.7 5.8-20.3 1.7 0.3-6.1 mg/l m Sulfate 32.3 20.0-51.0 22.0 19.0-29.0 mg/l O Phosphorus O.09 0.02-0.28 0.08 0.01-1.3 mg/l Silica 1.5 O.00-5.6 0.2 0.03-0.47 mg/l Total alkalinity 100 00-113 G2 88-104 mg/l BOD 2.3 1-4 3.2 2-4 mg/l Suspended solids 60 10-177 12 1-41 m0/l Dissolved solids 216 164-326 160 136-214 mg/l
> Turbidity 50.9 5-150 0 3-23 F.T.U.
Hydrogen-lons 8.2 7.8-8,5 0.5 7.0-9.0 pH
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T TABLE 12 MONTHLY MEAN PHYTOPLANKTON POPULATIONS' FROM SAMPLING STATIONS AT LOCUST POINT, LAKE ERIE - 1976 Date March April May Juno July Au0ust Sept. ' Oct. Nov. Grand Station to 14 17 16 20 to 14 10 2 Maan 1 23558 112O20 21163 2004 140117 40702 42704 122066 36167 62p72 3 104261 12031 1607 110003 114372 27050 61120 14243 50273 6 ** 135270 13205 1981 110667 112200 33446 60640 21031 63304 8 22747 80470 8705 1340 00734 112114 25408 52375 15101 45351 O ** ** ** ** ** 65016 23100 44500 12 103013 17088 1000 104301 61540 35260 113001 40442 63541
.9 10' 21247 113040 14204 1507 51303 01760 24036 00073 13005 47003 A 14 110037 11605 1000 62226 130016 23302 57700 16405 51666 10 100856 11712 1508 53030 71100 20484 60041 16405 44013 26 82040 0707 2110 124613 60381 22235 42270 21063 45670 i
27 ** 100133 0841 1514 70364 60106 20118 51403 15510 42271 28 07765 10101 1110 66845 26076 20423 53610 24514 36310
06204 20 13455 1408 71370 87603 15006 40660 22001 44732 Grand 22517 103200 12021 1604 87260 03046 26260 70120 22324 47707 Mean Data presented as no. of whole organisms /l and computed from dupl5 ate ver- '
tical tows (bottom to surface) with a Wisconsin plant < ton net (12 cm diameter,
- 0.080 mm mesh) at each station.
No sample was collected
FIGURE 4. MONTHLY MEAN PHYTOPLANKTON POPULATIONS FOR LAKE ERIE AT LOCUST POINT, 1974 - 1976 a 320 000 ~ e A [ 1974
, / A 1975 l 120,000_.
1976 E
.y100,000-- g 7
E' o 80,000-- /j - a> f l 0 j 60,000-- l l
/ ;
~
40,000- - I
/ n r
20,000- - 5
/ / . _ ,;.
i MAR 7 APR f/-L MAY JUNE
-- w JULY AUG.
l cr SEPT.
/
OCT.
/
NOV. DEC.
,, No samplo collected 6
e
FIGURE 5 MONTHLY MEAN BACILLARIOPHYCEAE, CHLOROPHYCEAE, AND MYXOPHYCEAE POPULATIONS FOR LAKE ERIE AT LOCUST POINT,1976, I *
~ '
Bacillarlophyceae 90,000 _. _ Chlorophyceae 80,000 - Myxophyceae N . 70,000 - \ - N N > 6 ~ N N N N E e 50,000 - 8 N N m 2 40,000 ~~ N N 30,000 - 8 N N 20'000 - n N N - 0 N N
' t N N <
x k t E N N i N W O n MAR. APR. R_, MAY JUNE JULY N c3_N AUG.
-y SEPT. OCT.
_ x bl , NOV.
27 i Monthly mean Bacillariophycean populations ranged from 90/1 in ! June to 102,830/1 in April (Table 11). The mean population from all ! samples collected in 1976 was 22,190/l or 46% of the entire phyto-I plankton population. The dom [nant diatom taxa were Stechanodiscus binderanus in March, April, August, October and November; Diatoma l sp. in May; Melostra sp. In June; Fragilaria crotenensis in July; and
- Fragitaria spp. In Stotember. S'techanodiscus binderanus had the j largest annual mean population, 8,081/1. Diatoms were the dominant i algal group in the Locust Point vicinity from March to May and in September and October when they composed 99%, 99%, 88%, 64% and 49%, respectively, of the entire monthly phytoplankton population. In contrast to this, diatoms constituted only 0.5% of the July phytoplankton population.
Monthly mean Chlorophycean pcpu'ations ranged from 32/1 in March
- to 21,e72/1 in October (Table 11). De mean from all samples collected in 1976 was 4,979/1 or 10% of the entire phytoplankton population. The i dominant Chicrophycean taxa were Pediastrum sp. In March and June; Mougeotia sp. In April, May, July, October and November; and Pedia-
- strum simolex in August and September. Mougeotia sp. had the largest annual mean population, 3,098/l or 62% of the Chlorophycean total, j Chlorophyceans were the dominant '1 gal group only in November when
{ they constituted 53% of the entire phytoplankton population. In co -trast
! to this, green algae constituted only 0.1% of the March phytoplankton f
population. I The class Chrysophyceae was represented by only 2 taxa, Olncbryon i sp. and Tribonema sp. , and occurred in April, May and August (Table 11). Dinebryon sp. mstituted 1% of the May phytcplankton population. The Dinophyceae were represented by 4 taxa (Table 11). The j monthly mean population ranged from O/1 in April to 131/1 in September i when they represented 0.5% of the entire phytoplankton population. Monthly mean Myxophycean populations ranged from 13/1 in June to 84,901/1 in July (Table 11). The mean Myxophycean population from all samples collected in 1976 was 20,552/1 or 43% of the entire phytoplankton population. The dominant Myxcphycean taxa were Oscil-latoria sp. In March, April, June, September, October and November; j Achanizomenon/Oscillatoria in May; and Achanizemenon sp. In July and l August. Aphanizomenon sp. had the largest annual mean population, i 18,000/1. Myxophyceans were the dominant algal group in July and August when they constituted 97% and 94%, respectively, of the phyto-
. plankten population.
l i, 4 .. . . . - . . . .. . - .- -
28 l i l Values from individual sampling stations and dates from July-November 1976 are contained in Appendix A. Zocolankton. Zooplankters collected March through November 1976 were placed in 72 taxa, generally to the species level (Table 13). Thirty-two taxa were grouped under Rotifera, 22 under Copepoda, 13 under Clad-ocera, and 5 under Protozoa. Monthly mean populations ranged from 32/1 in March to 1168,'1 In July. The mean population from all samples collected in 1976 was 625/1. Zooplankton populations from individual sampling stations ranged from 30/1 at Station 8 in March to 1,493/1 at Station 1 in November (Table 14). Monthly mean rotifer populations ranged from 27/1 in March to 681/1 in October (Table 13). The annual mean rotifer population from all samples collected during 1976 was 298/l or 4806 of the entire zooplankten l population. The dominant rotifer taxa during 1976 were Synchaeta spp. In March and August; Notholca spp. In April; Keratella cuadrata in May, June, October, and November; Brachionus angularis in July; and Tri-chocerca multicrinis in September. Synchaeta sp. had the largest an-nual mean population, 89/l. Rotifera was the dominant zooplankton group in March, April, May, August, October, and November composing 8436, 817?, 57;?, 72;?, 82S?, and 797?, respectively, of the entire zooplankton population. In contrast to thls, rotifers constituted only 53? of the July zooplankton population. Monthly mean copepod populations ranged from 5/1 1.1 March to 283/1 in June (Table 13). Tne mean copeped population from all samples col-lected during 1976 wae4 110/1 or 187? of the entire zooplankton population. The dominant copepod stages were cyclopold nauplil from March through May ano from August through November, immature cyclopoids .in June and immature Cycloos vernalis in July, Cyclopold nauplit had the largest annual mean population, 49/1. Copepoda was never the dominant zoo-plankton group, but reached its greatest significance in June when it constituted 40!? of the entire zooplankton population. The abrupt pulse in May and June was largely due to immature cyclor .d forms. Monthly mean cladoceran populations ranged from O.2/1 in March to 335/1 in June'(Table 13). The mean cladoceran population front all samples collected during 1976 was 90/1 or 1476 of the entire zcoplankton population. Cladoceran populations were dominated by Dachnia retrocurva in March, April, and June and by Eubosmina coregoni in May and from 1 July through November. Eubosmina ceregoni had the largest annual i i
. ~, . _ . . . . . _ _ . . . . . _ _ ._ . _ . . . _ . _ . . _ . .
l . . . _ . . . .. . --
T A B i_.i 13 i MONTHLY MEAN POPULATIONS
- OF INDIVIDUAL ZOOPLANKTON TAXA AT LOCUST POINT - 1976 March April May June July August Sept. Oct. Nov. Grand TAXA 1064 14 17 16 20 10 14 10 2 Mean
. ROTIFERA l Asplanchna (giroldll) 0.04 0.0
& priodonta 0.1 40.5 0.1 5.0 ! 6.0 4.6 1.5 6.6 i
& spp. 25.1 0.3 2.0 Olpalpus htxisoni O.1 0.1 0.1 0.G3
! Brachionus angularls 0.0 1.4 2.1 3.4 10.3 10.7 0.5 0.3 5.2 02 calyctriorus 0.2 3.0 2.2 1.1 2.0 0.1 10.2 7.5 3.0 B. diversicornus 0.1 0.0 6.0 2.1 1.0 B2 havanaensis 0.9 0.1 0.1 02 urceolaris 0.1 0.2 0.1 0.03 0.05 Chromogaster ovalls 0.1 0.01 Conochiloides sp. 4.3 44,0 0.1 0.1 1.4 5.6 Fillnia lonqiseta 0.1 0.01 O terminalls O.4 0.6 6.4 03 0.1 0.2 0.0 i Gastropus styttfer O.03 0.0 Kellicottia longtspina 0.1 1.7 14.0 7.0 0.0 0.3 0.6 0.3 1.0 3.1 @
v Keratella cochlearts 1.2 5.5 27.2 10.0 2.0 2.7 0.0 102.0 157.1 35.0 K2 quadrata 1.0 0.7 260.7 02.0 1.2 1.2 0.0 200.0 170.7 02.4 L serrulata 1.0 0.8 17.4 61.0 7.6 0.0 L valid 0.1 0.01 Notholca labis O.04 0.0
& squamula O2 0.02
& spp. 0.0 123.7 2.7 0.03 0.1 14.1 Pleosoma lenticulare 0.2 1.0 0.6 0.2
! B sp. O.1 0.01 j Polyarthra spp. 6.3 6.5 60.5 0.6 3.3 30.6 26.4 105.0 35.7 42.5 Pcmpholyx sulcata O.2 7.3 11.0 7.0 2.0 Synchaeta spp. 10.5 10.7 14.1 10.4 504.0 0.4 100.0 120.1 09.0 Tonttxilnolla cpp. O.02 0.1 0.01 leichocerca cylindelca O.1 1.0 0.2 0.1 T. multiccinis 0.3 1.5 0.3
- 1.3 35.2 1.0 0.2 4.4
, Elchotrita totractis
- O.3 O.0 0.2 0.2 i Unknown 0.1 2.0 0.1 0.2 Subtotal 27.2 161.7 452.6 07.3 53.2 501.7 110.0 601.0 513.0 200.0 n _ _ --. __ _,
( TABLE 13 CON'T. . i MONTHLY MEAN POPULATIONS OF INDIVIDUAL . ZOOPLANKTON TAXA AT LOCUST POINT - 1076 March April May Juna July August Sept. Oct. Nov. Grand TAXA 18 . . 14 17 16 20 18 14 19 2 Mean COPEPODA Calanoid Copepods . Diaptomus minutus O.1 0.01 D. oregonensis 1.2 0.8 0.1 0.5 0.3 D. sicilis D. siciloides 0.6 0.1 0.7 0.1 0.2 0.3 D. spp. 4.8 2.5 0.8 Immatures, Olaptomus O.4 16.7 2.4- 2.2 Epischura lacustris 0.02 0.1 0.01 Etcytemora affinis 0.0 0.1 0.12 Immatures, -E. affinis 2.8 1.0 0.44 j Limnocalanus macetrus O.7 O.11 $ l Skistodlaptomus oregonensis 0.1 ,0,01 j Immatures, Calanoid 4.7 0.4 3.0 1.4 i Nauplit Calanoid O2 14.2 32.5 12.9 10.6 2.9 1.1 15.7 8.2 10.0 Unidentified, Calanoid 0.1 0.01 , .
; Cyclopold i Cyclops talcuspidatus thomast # O.0 0.1 0.2 0.2 0.1 0.2 0.9 1.0 l immature , C.b.t. 0.7 6.6 12.3 20.1 4.4
$ vernatts 0.04 4.4 70.8 10.4 0.3 3.3 0.2 1.2 10.1
- Immatures, C vernalls 17.7 3.6 11.6 3.8 14.5 5.7 Mesocyclops edax 0.03 0.0 Tropocpciops prostnus 0.03 0.1 0.2' O2 0.06 Immatures, Cyclopold 0.6 0.0 57.6 110.2 13.6 0.1 20.3 Nauplit, Cyclopold 4.1 20.0 146.3 73.7 8.8 24.6 29.7 67.4 60.4 49.3 Subtotal 4.9 37.7 271.0 282.5 67.5 32.6 65.8 105.3 110.2 100.7 l
4 h
0 t TABLE 13 CON'T. l MONTHLY MEAbt POPULATIONS
- OF INDIVIDUAL ZOOPLANKTON TAXA AT LOCUST POINT - 1976 March April May June July August Sept. Oct. Nov. Grand TAXA 18** 14 17 16 20 18 14 10 2 Maan CLAUOCERA Alona affinis O.2 0.02 Bosmina longirostris 0.1 0.1 16.4 09.2 0.3 0.1 1.0 1.5 13.0 Ceriodaphnia sp. O.2 0.1 Chydorus sphaericus 0.03 0.03 1.0 3.1 1.8 0.7 55.4 10.8 3.1 8.5 Daphnia galeata mendote 1.0 ,
1.2 0.1 0.1 0.24 Q parvula O.2 0.02 Q putex O.04 0.02 0.0 Q retrocurva 0.1 0.8 3.0 137.7 60.3 0.1 41.0 0.4 0.3 20.2 Diaphanosoma leuchtenber-glanum O.1 0.4 0.8 0.6 6.4 0.0 Etbot.mina coregont 0.2 02.7 106.4 20.5 1.0 05.7 12.7 7.1 37.3 o Holopedium gibberum O.1 1.eptodoro i<indtli 0.01 -* O.02 0.04 0.4 1.7 0.27 Unl<nown Subtotal 0.1 0.01 O.2 1.1 43.0 334.7 180.1 2.4 204.7 25.0 16.0 80.0
, PROTOZOA Centropynis sp.
Diffitola sp. O.1 10.7 2.2 03.2 2.0 36.3 18.0 1.0 10.4 Saccate Protozoan 11.0 1.2 Unidentified Protozoan A 705.6 184.0 08.8 Unidentified Protozoan D 68.8 7.6 atotal O.1 0.0 10.7 2.2 867.6 108.1 36.3 18.0 1.0 127.1 TOTAL 32.4 200.4 787.2 706.7 1168.2 824.8 425.6 830.6 650.0 625.1 Expressed as no./l and computed from duplicate vertical tows (bottom to surface) with a Wisconsin plankton net (12 cm diameter; O.080 mm mesh) frorn 12 sampling stations. on the dates indicated. Only stations 1, 8, and 13 were sampled.
l i TABLE 14 MONTHLY MEAN ZOOPLANKTON POPULATIONS
- FROM SAMPLING STATIONS AT LOCUST POINT, LAKE ERIE - 1976 4
Data March April May June July August Sept. Oct . Nov. Grand Station to 14 17 16 20- 18 14 10 2 Mean j j 1 34 311 763 1083- 563 842 866 1170 1493 702 3 218 1007 759 454 731 410 855 520 610 6 209 768 718 467 550 441 883 512 570 8 30 127 846 678 248 435 243 513 480 401 g ee ** ee se ** ** 37o 357 364 12 740 189 010 520 1152 611 1323 086 804 la 13 33 210 781 803 087 703 417 984 569 554 I0 i 14 ** ). 219 744 501 325 413 360 982 529 510 18 ** l 197 662 627 250 924 461 867 C*2 550 l 26 164 917 723 A2 430 340 448 543 501 ! 27 108 842 500 156 453 367 545 536 461 i 4
, 28 106 761 565 357 233 251 413 450 400
- 20 171 615 622 461 745 400 661 Saa Grand Moan 32 200 707 707 305 630 420 831 650 510 Data presented as no. of organisms /l and computed from duplicate vertical tows
] (bottom to surface) with a Wisconsin plankton net (12 cm diameter, 0.000 mm I mesh) at each station. Protozoans other than Difflugia sp. were not included. l
*
- No sample was collected.
l 1 I
c 1 33 mean population, 37/1. Cladocera was the dominant zooplankton group in June when it constituted 47% of the entire zooplankton population. Were it not for large Protozoan populations in July, Cladccera would have dominated, for it constituted 60% of the total for the remaining zooplankton groOps. Cladocerans composed only 0.2% of the August zooplankton population. Monthly mean protozoan populations ranged fecm O/l in April to 868/l in July (Table 13). Protozoans were most abundant in July and August when they constituted 74% and 24%, respectively, of the entire zooplankton population. Values from Individual sampling stations and dates from July through November 1976 are contained in Appendix 8. Benthos Benthic macroinvertebrates collected March through November 1976 were grouped in 51 taxa, generally to the genus or species level, within 4 phyla (Table 15). Two taxa were in Coelenterata, 17 in Anrellda, 21 in Arthropoda, and 11 in Mollusca. Monthly mean benthic macroinvertebrate populations ranged from 127/m2 in March to 3,753/m2 in September with an annual mean popu - lation of 1,801/m 2. These populations were strongly dominated by Annelids and Arthropods. Populations at individual sampling stations along the 4 sampling transects appear to increase with distance offshore (Fig. 6 and Table 16). Population densities at the intake (Station 8) and discharge (Station 12) structures appear to be reduced.
~
Monthly mean Annelid populations ranged from 113/m2 in March to 2,715/m2 in September with an annual mean for all samples collected in 1976 of 1,330/m2 or 74% of the entire benthic macroinvertebrate population (Table 15). Immature Oligochaeta was always the dominant group in Annelida ranging from 113/m2 in March to 2,309/m2 in Sep-tember. Annelida was always the Cominant group in the benthos. Monthly mean Arthropod populations ranged from 11/m2 in March to 1,035/m2 in September with an annual mean of 439/m2 (Table 15). The dominant Arthropod taxa were Gammarus fasciatus in March; Cryo-tochironomus sp. In April; Chironomus sp. in May, June, and November: Leptodora kindtti frem July through September; and Tanytarsus sp. in October. Leotodora kindtil had the largest annual mean population, 241/m 2. i 1 l _.m_. . . . . . . - - - - + - - l- , - - . , - . _ - , -- ,-- - . - . - - - , - - - - - - - ---- --- - - -
34 ) g C00 I N== DOT -NOTOOMNoco . = a>N = 0 iff 'diddad a idaddddfdy j did & i
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, i
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i
- Control West FIG LRE 6 MEAN BENTHIC MACROINVERTEBRATE i
I POPULATIONS AT VARIOUS DISTANCES intake FROM THE ORIGIN OF THE FOUR SAM-4000 -, PLING TRANSECTS - 1976
- y-Discharge Control East N
\
3000 -- a N N 4 \ N E N N 8 E 2000 --'- N x N N X N e K N N X N 1000 " 2 N T N N
\
X N N N $ N R X N N N N A N
, x ..
500 x x 1000 1500 x . . N 2000 N X * * *
- N
- 3000 4000 4500 Distance From Origin (ft)
- No sampling station at this distance on this transect.
i l TABLE 16 MONTHLY MEAN BENTHIC MACROINVERTEBRATE POPULATIONS
- FROM SAMPLING STATIONS Al LOCUST POINT, LAKE ERIE - 1976 Date March April May Juno July August Sept. Oct. Nov. Grand i Station 10 9 4 7 5 5 3 5 1 Mean I 1 134 13 337 662 042 509 500 G40 1104 540
300 3565 210 2006 3 172 1554 2540 1573 1376 .
6 400 579 023 2349 299' 3627 376 1061 1662 7 2107 350 520 2702 5023 4756 4565 509 2500 f a 57 64 072 1590 1834 750 2092 2004 172 1217 , D " 170 1560 3725 2470 4007 5175 1993 242 2510
1751 6252 703 901 11 09 312 960 074 1514 O
12 57 522 430 1331 1067 2272 2547 1165 1200 N l 13 101 03 200 624 4130 2101 3705 5100 302 ' 1555
3731 6067 4476
] 14 1170 704 2171 2100 5160 3220 220 592 2649 3432 15 26 3062 3457 670 1765 16 64 220 121 400 1261 2360 370 240 645
267 592 1730 2014 17 101 100 363 446 015 I
452 4164 5760 3534 i ,
10 450 105 5539 4565 3003 20 ** 573 007 3132 2547 3920 3360 1814 1127 2160 27 ** 3002' 407 2566 6404 5'404 4463 4769 4425 3974
1500 1555 2655 4253 4590 7225 20 520 .7703 3707 20 " 204 03 599 1916 3400 1967 4215 1413 1725 Grand ,
Mean 127 540 559 1245 2559 270; 3753 2663 1003 1801 Data presented as no/m2 and computed from 3 grabs with a Ponar dredge (A = 0.052 m2) at each station on the dates indicated. No sample was collected.
38 l l l l l Values for individual sampling stations and dates from July through November 197G are contained in Appendix C. Fish - i Cf the 47 species reported from the Locust Point vicinity since 1963, 25 were captured in 1976 (Table 17). The 5 fishing methods employed yielded 78,217 fish (Table 18). The combined results of the gill nets, shore seines, and trawls (methods used to capture juveniles and adults in the lake proper) indicated that alewife (Alosa pseudoharengus), gi =ard shad (Dorosoma cepedianum), white bass (Morone chrysops), emerald shiners (Notrools atherinoides), spottall shiners (N. hudsonius), and yellow persh (Perca flavescens) were the dominant species in the Locust Point vicinity (Table 19). Gill Nets. Gill nets set from April to November yielded 2,397 fish (catch per unit effort [CPE] = 171) representing 17 species or 3% of the total 1976 catch (Table 18). The monthly catch ranged from 111 fish (CPE = 56) of 12 species in June to 623 fish (CPE = 312) of 13 species in September-October. Station 13 produced 69% of the total catch. Results for individual species on each sampling date, July-November, and at each station are presented in Appendix D. Shore Seines. Shore setning in 1976 yielded 60,746 fish (CPE = 2531) of 17 species, 75% of the total catch in 1976 (Table 18). Of these, 93% (56,594 - CPE = 18,865) were collected in July. Young-of-the-year alewife accounted for 53% (30,251) of the July catch, while young-of-the-year gl= ard shad represented 44% of this collection. In contrast to this only 128 fish (CPE = 43) of 6 species were collected in April. Additional results are contained in Appendix D. Trawl . Trawling from April-November yielded 1,217 fish (CPE = 152) representing 16 species (Table 18). Monthly CPE results ranged from 6 fish of 2 species in May to 497 fish of 9 species in August. A 11tiov.1 results from July-November are contained in Appendix D. Hoor. Nets. Hoop nets, used only within the marshes, yielded 24 fish (CPE = 1.7) of 5 species in 1976 (Table 18). Additional results collected from July-October are contained in Appendix D. Fry Net. ! ry netting from April through August of 1976 yielded 16,721 larvae and 4,838 eggs (Table 20). Over 72% of the larvae and 92% of the eggs collected were captured at the surface. No eggs were collected in July or August, and only 4 larvae were captured during the last 2 collection periods in August. The number of surface larvae collected tended to increase from east to west and shoreward. Concen-n~ . , . - , - - . - , , . - .
39 TABLE 17 SPECIES FOUND IN THE LOCUST POINT AREA 1963 - 19761 OJ (9 T 10 'O N N N rw 5 O O O O O Scientific Name2 Common Name Amiidae
* *
- Amla calva bowfin Atherinidae
* * . Labidesthes sicculus brook silversides Catostomidas
*
- Carpiodes cyprinus qt illback carpsucker
+ * * = . Catostomus commersoni common white sucker
- Minvtrema melancos spotted sucker
- Moxostoma, erythrurum golden redhorse
. Icticbus cyorinellus bigmouth buffalo fish
- Hypentellum nigricans hog sucker Centrarchidae
, Ambloolites rucestris northern rockbass
* . . Lecomis cyanellus green sunfish
. . 6 gibbosus pumpkinseed sunfish 6 humills orangespotted sunfish 6 macrochinas northern bluegill sunfish 6 microtochus redear sunfish
. *
- Micropterus dolomieul smallmouth bass
*
- M. salmoides - largemouth bass
. * . . Pomoxis annularis white crappie
* . . . . L nigromaculatus black crappie Clupeidae
* * * * . Alosa pseudoharengus alewife
* * * * . Dorosoma cepedianum gizzard shad Cyprinidae
* * * . . Carassius auratus goldfish
. . Q auratus x Cyprinus carpio carp x goldfish hybrid
. * * . . Cyprinus carcio carp
. . . . Hyboosis storeriana silver chub a . . - . Notropis atherinoides emerald shiner
. * * . . N. hudsonius spottail shiner -
i L 1
*. e - - .. - . . _ - - . .. -.. _ . . ... e - ..
-p w -- --------o
40 TABLE 17 CON'T. SPECIES FOUND IN THE LOCUST POINT AREA 1963 - 1976 1 lc4 o e clo s n- 8 s n-2 3 3 3 33 Scientific Name Common Name i
. . . N. spliopterus spotfin shiner
& volucellus mimic shiner
. Pimephales promelas fathead mt.inow
, Esocidae Esox lucius northern pike Ictaluridae
. . Ictaturus melas black bullhead
. . . I. natalis yellow bullhead
. . . .
- I. nebulosus brown bullhead I_. punctatus channel catfish Noturus flaws stonecat madtcm Lepisosteldae i
. . Lecisosteus osseus Icngnose gar Osmeridae
. . . . . Osmerus mordax rainbow smelt Percidae
. Etheostoma nigrum johnny darter
, . . . . . Perca flavescens yellow perch l . . . . Percina caprodes logperch darter l
. . Stizostedion canadense sauger
. . . . . S. /. vitreum walleye l Percichthyidae
. . . . . Marcne chrysops white bass Percopsidae
, . . . Percopsis omiscomaycus troutperch Petromyzontidae -
. Petromyzon marinus sea lamprey -
Salmonidae
, , Oncorhynchus kisutch coho salmen Sclaenidae ~
. . . , , Aplodinotus grunniens freshwater drum i
e cc e o o O O OJ CJ OJ 1 Including those collected en Federal Aid Project F-41-R. 2 Bailey et al. (1970)
--4 ----a ,- - ,- <me- - -~ -- o w
_ . - - .. _. . _ . _ _ _ _ _ - . _ _ . _. _ .. , ~ _ . ._ .. . , _ . . TABLE 18 . NUMBER OF FISH COLLECTED AT LOCUST POINT FROM APRIL-NOVEMBER 1976 WITH EQUAL MONTHLY EFFORTl WITH EACH PIECE OF FISHING EQUIPMENT APH8L MAY . JUNE JULY puJGUS1 EEPTCMitER OCTOt1La4 NovC MiaER TOIAL R& h eOD fM. tk. tk. tM. Hu. VM. IM. IM. (M. t%. tM. tk. tM. tM. tM. tM. 1M. ta3 OF of of uf of vf of of of of A of of of of of of of of CAPitRC F h.h Sperles Fish Specte h F it,h Mc tes Fish Species Fish Spectes Fish Specie s Fish Spectee Flth Species F 4 tJs %ecies te Galt Net 3 29S 6 391 13 149 12 482 10 4 t ti 9 622 13 Sample ISO 4 2430 17
,I Staxw Seine 4 120 0 1134 7 103 8 56594 10 140t> 8 262 6 375 8 bud 2 A746 17 1ra*4 52 6 6 2 15 6 12 4 497 0 34S 11 91 9 100 S 1287 to S
Mxsp Net 3 2 1 5 9 1 e 2 0 0 *1 3 3 2 Sample 24 S tM fM tsa Fry Net? SS3 3 230 6 120*,A 13 3761 S 121 4 Sample Sample Sample 10721 13 TOTAt. 1034 12 1761 ' 16 12370 18 57800 54 2502 11 1241 87 469 31 945 6 til144 25 t hube votwo repros.ont ttw num of the CPE results from all statione at which each' place of ftwhing equipment was ua ed wacts month. I 2 The nets were set on Septemt>er 30 arma putted on Octutwr 1. 3 Sta units of effort / month, f 4 lismo units of effort / month. S Ono unit of effort / month, i
, o Two units of effort / month.
7 lhtrty-sim units of effort / month. Only larvae are reported. l I 1 l e l
TABLE 10 MONTHLY CATCH OF INDIVIDUAL FISH SPECIES AT LOCUST POINT WITH EQUAL EFFORT
- USING GILL NETS, SHORE SEINES, AND TRAWLS - 1976 (FXPRESSED AS NUMBER OF INDIVIDUALS)
) l __ SPECIES COLLECTED vaan
,Atosa gaetaanbareryv 36 0 30266 021 453 G 262 4032 Aptmiennhes Oeta rstens 4 24 45 10 2 2 12 Carassius .ratua S 7 7 1 1 3 Cyprenus evpio 73 11 36 10 24 4 S 22 Dorocoma cepedt.'wsn 20 4 to 24706 582 '345 460 68 3264 toyhopsis storcriana l O.1 actalurus neindesus 4 2 1 1 l
j k rawetatus 9 9 2 1 3
, 4 abschsthes sicculus 1 0.1 f, Morme cym 1 ,6 4 1500 487 G3 11 2G3 Notrgs etreranoidas 2S 1112 137 50 33 30 61 595 250 3 his sonsus m 100 200 On SG 161 100 66 25 1to
& r.p61noterus 7 1 Or.mers.s nwr<saw 1 3 1 1 Erca riavescens 143 42 70 240 147 160 164 1 123 Percina caprosi's
- 2 1 1 1 Perconsts omiscomaycus t 2 1 1 1 Pomoals annutarts t 4 1 1 1 S negromaculatus 3 2l 2 1 1 f Stirostedton canadense 1 1 2 1 1 1 L 3 vit, etan 2 17 2 4 3 5 Numteer of Species 11 15 15 13 11 17 lu 5 28 TOTAL 4F7 1533 352 57018 2301 1230 1000 044 8120
'Iwo units of effort (gtli tut), 3 units of effort (shor% solno), and 1 unit of effort (trawl) per month, j " During Soptember-Octobor alli ruts were fishod orwe on 33 Sept-1 Oct. Tno totst catch was entered in i = laoth Septomtece and Octobor.
i I e a t I l i, I i i
. TABLE 20 I
St.'MMARY OF ICHTHYOPLANKTON CATCH PER UNIT EFFORT" RESULTS AT LOCUST POINT JULY - AUGUST 1970 l Date DeptN Catch au n S ad o S au n au n au n tau n al 3 13 20 20 0 20 8 Juay 76 S L 200 010 420 357 630 470 2987 S E o P >_ 12 4 11 6 10 9 52 8 B E O 23 July 1976 S L 173 31 17 179 116 59 575 b
. S E O B L 2 1 120 123 i B E O.
I 29 July 1976 s L 12 4 3 5 2 26 S. E O i i B L O t B E l 0 1 t 9
4 O 3 O O O 0 O 4 O 0 O T ^ 1 1 N I O P T S 3 U 5 C ._ O " L 0 T 2 A S T " 6 L U ""0 S E R 9 3 a " 1 T " 0 R "2 O F ._ F 6 E7 " 7 2 1 9 1 T1 " 0 0 I
# 2 2 NT US U
E RG " 0 L EU 1 B PA 3 1 A # T H-C TY L " 9 1 A U C J " 3 N " O T K N h . A c L E L E L E L E L E L L t E a P C O Nt _ Y p H e s T D S S B B S S b P 3 8 B H C I l F O Y R 6 6 7 6 A 7 9 7 9 M 9 1 1 1 M t s t s U t
~s u u S u g O e g u u t u A A a A D 0 1 O 2 3
!;4 $ ! t - .!; ' i i l l ,.
l TABLE 20 4 i !
SUMMARY
OF ICHTHYC 'LANKTON CATCH PER UNIT EFFORT
- RESULTS AT LOCUST POINT
, JULY - AUGUST 1976 Date Deptk Catch Station Station Station Station Station Station Total 3 13 29 26 8 28 Subtotal S L 3452 1322 1030 1646 461 443 8354 I
April - June S E 1 292 1920 926 605 693 4437 B L 600 1200 1122 744 534 279 4479 B E 20 82 299 401 Subtotal S L 394 955 458 563 754 582 3706 3 July - August 01 l; S E O B l L 15 4 14 126 10 9 178
, B E O
; TOTAL S L 3846 2277 1488 2209 1215 1025 12060 i i
. S. E 1 292 1920 926 605 693 4437
- B L 615 1204 1136 870 544 288 4657 B E 20 82 299 401 j
a One 5-minute tow with a 0.75-m diameter heavy-duty oceanographic plankton not (no. 00, 0.76 mm mesh) at the surface and bottom of each station os. each date, b S = Surface; B = Bottom
; e L = Larvae; E ' Jggs l
46 trations, of larvae at the bottom also increased shoreward. Of the eggs collected in the bottom tows, 95?? were collected either at Station 8 (Intake) or Station 13 (plume ar 'a). Over 99.9)? of the eggs were collected in June (Table 21). Emerald shir.ers (Notrocis atherinoides), giz=ard shad (Dorosoma cecedianum), ard yellow perch (Perca flavescens), resoectively, were the most abundant larvae. No larvae were collected until April 30. Larvae populations were dominated by perch from April 30-May 27, gl=zard shad from June 11-17, and emerald shiners from June 28-August 31. No eggs were collected at Toussaint Reef (Table 22). Species composition was similar to that at Locust Point but the concentrations were lower. Raw data from lehthyoplankton collections at Locust Point in July and August are contained in Appendix E. Food Habits The food habits of the fish in the Locust Point vicinity from Ju.y- i November are presented in Table 23. Raw data are contained in Appendix F. Zooplankton appears to be the most common food source at Locust Point. DISCUSSION 1 Water Quality Seasonal Variations. The quality of the water in the vicinity of the Davis-Besse Nuclear Power Station during the period March through June 1976 was typical for the south shore of western Lake Erie and showed normal seasonal trends. Water temperature rose nearly 20 C during the 3-month period from mid-March to mid-June while the dissolved oxygen level fell 5 ppm (Fig. 7). The turbulence of the early spring period and the corresponding high sediment load are reflected in the high turbidity and suspended solids values and low transparency observed for March (Fig. 8). A 5-fold improve-ment in the clarity of the water took place during April and May. The biochemical oxygen demand was rather low during the entire period even at the time of high turbidity indicating that the suspended mater!al was largely of an inorganic nature. In a like manner the dissolved substances in the water were highest in the early soring and decreased y - - . . - _ . - . r -- ---m e-
a ! I l ' p* I i 4!
, i) yq E
C . A F
. R U
SEI
; J .
9 2 1 0 1 8 0 1 0 0 7 6 0 9 ERE '$ 6 0 0 0 0 O 2 0 0 O. 0 0 3 0 0 O' . 0 2 H I$ 2 3 5 0 TE 3 3 K IA 8Y O 0 MA OL 0 R
- O )
F , N .8l h. T 5
- i. s i
1
' t. e 0 9 0 0 - SN O a8I m
TI m n LO 1 0 5 2 , UP $ xl 0 0 1 2 0 7 ST 0 ES 1 0 8 S 3 2 2 0, o RU Q xl
- S t O
-
- C 6 8 8 1 3 o.
n TO .xi 0 1 0 0 5 1 S ( RL 6 3 9 0 2 3 2 6 t. v t O. O F T i r 9 0 0 3 S f 0 o 1 t. F A
$k J M 64 1
4, 3 3 1 0 4 1 1 1 0 a b. 1 2 ES 3 9 2 0 0 1 0 0 0 0 0 38 a p N T O Sk 3 1 1 ic hp I 3 3 3 1 1 4 5 4 1 a E NIT 0 0 0 7 4 1 O 0 0 0 3 g r L U 0k o n B A L. 2 7
- d. a e
A RT 0 0 0 1 c o
- T ES Qx3 ty P G 2 0
1 0 6 6 1 O 0 7 d u 0 x3 y HNI
- t. 7 i.
v a CL 1 t. 0 O 9 O 0 w TP t 1 _
$ x3 -
ro A CM 9 3 9 1 te _ A 0 0' 3 0 0 4 a m _ NS :k 0 o t O i, TIX 6 0 - _
," : k 0 _
7 KS 1 0 O N 0 0 a AF LO Ok h t i w P s w OM u ) o YO g t n e n s v. ly i e n e n h HT a s s r s ss o u d s s n n o m gst e TT h tu n s u r.u r 4 s r e lo o S g o ie e d c n d n t r e s o 3avi u r e n s a
= c s s d . a 3 HO E L
g E a e d u r i na o re to tr ro ip rv w d
< e a s
ep r p nyr o he o u d s r r a e n v t t e s r se mLv o r o o CB C E hs s o r lp y s o s < o s e vh r i
.h w o c a o pi .on nAa TL o aopac r. r.
t l so p o a ct es c cvct > a w r re f om sl t v I pl r
. D P
S Fail A C C t v A A A P N O P P S M0( ( 1
- NN -
AA E { y M
. #* I .il gl ' .ji[l' , ,! .
I j! i I 1 I q ,i!1 4I !!i;'
48 TABLE 22 ICHTHYOPL.ANKTON CONCENTRATIONS
- FROM LAKE ERIE AT TOUSSAINT REEF JULY - AUGUST 1976 No, at No at Date Species Surface Bottorn 6 July 1976 Morone chryscos 3 Notropis atherinoides 394- 50 12 July 1976 Aplodinotus _grunniens 1 Dorosoma cecedlanum 6 Notropis athertroldes 71 3 28 July 1976 Notropis atherinoldes 1 4 August 1976 Notropis atherinoides 3 2 28 August 1976 None TOTAL 476 58 No ./1 Com3 Collected by one 3-minute tow with a O.75-m diameter oceanographic plankton net (no. CO, 0.76 mm mesh) at the surface and bottom on each date.
--a- , , w , -
pqy- - - ----
j TABLE 23 i
SUMMARY
OF FOOD HABITS OF FISH COLLECTED AT LOCUST POINT
- 1
- JULY - NOVEMBER 1976 i
, Food items i 1
7 3 S i & =
- ~
to I . t y - [ t s g a 2 2 8 o 4 s 3 i monin Species re. x tenoth (mm) a f
" E
[ I 5 I $ *
~,
8 {y Captured Containtre Mean RanDe~ I { f f $ I gl k Fud i e } u a 6 8 dl di di a 3 3 8 5 o s 5 i 0 5 o Aplodtrotus Drunntens 6 100 137 130-140 6 3 41 43 3 letalurus psoctatus 3 100 13e 95-200 7 1 1 64 08 1 1 M m w chrysops 2 100 261 200-2G2 h St6rostedion n vitresm 2 100 '242 231-2S3 @ Stastotal 12 100 August Aplodirotus grunnters 2 100 165 162-168
)
tiotropis hudsonius 5 80 10e 90-160 1 2 1 l'i Stiaostecton v vitretm 6 67 130 72-179 Co 0.2 S4 total 13 02 Septamt,or Ictatorus rwbutosus 2 100 244 212-276 30 23 45 1 200 13 6 tJotropis athertrntries 1 100 4 , IDCx 000 4 0 4 ikstropis turtsonius 6 100 0 2-24 5 157 15 31 0.4 11 Perca flavescens 6 100 67 20-C4 1 6 0.4 1 1 0
, Stizostedton v. vttreum 1 100 62 '-
) S4 total 14 100 1 i
' I l
h l 1 1 ,
sI ' i , i 1 l I O
- 2. l. 1 d* 3%'g{ 00 1
,2 mi" g
.I p
~ 3 0 d= j4!d'}j 2 1
.g gri . g 0 - T d" 35[- 3k 1 N
I 1 2 5 g="fg
- O P d" IlP{}g 1 T '
S dis?jgg U l a 1 2 C d= gE[ g O s m 22 322 3 2 L t e d,gf6 00 00 0 i T d o I~ 6 A F o 2
!- 6 1 D
E fgg T6 C79 {C, g E
- 1 L 3~ t1 1
. LR
- 3 OE ,k 2 CB 24 2 1 E H EM d" flgo 00 1
L S V ) 6023 800 6 B I FO m c e 4005 1 222 607 1 1 1 7 2 40 20 A N m n a 0001 202 2 28* T F ( n R 3063 1 22 607 1 1 2 2 O- t vr n
)
a 703 2 580 44072 e e 3304 603 4 66 SY L M 1 1 22 ' 1 1 1 2 TL I U g n . . BJ ind io 00000 00000 0072 0060 000000 000000 A
%ao 1 1 1 11 1 1 1 1 1 1 5 H
t nF o C D d O e . r S3222 2503 21 6514 O . u ot p 1 1 1 F Na - C F n n O s ss s n n s a t n e n e a a r Y . t e s t i r t e st r n u v s nd s u o ti R s n tu s v n n i i s n tu s v o n n A ie v ta p r c o u o i o e g c e nnu s y n r Dsd va t x re 1s cs a M S p s ph r n o s n n u io s t o h ntatu av e n to M t u o s cd l i u o te a t o i l s s s fl d l U n r n s o t n gdt a a s t u r tp lpo a te a s t S id he o o t id o o o r r to h o c o to o l ta r r ta o e u tp to et tu e a tr tr r ra ta tc Jo Jc e t u
, gI c M b S A r J
s S I f t t P'S S r es t h t t m _ o n hg t e p M A u S e -
? il l. ' . i ! ;\ , 'j'
(
Ii, ' ,' I g *- . :n}8 E. a i
.X X
. ** 5{ ;E24 XXX XXXX XXXX 1
&- {p~f 1 (5s8b .(pS 3S 1
' 2
!t T
N I a$ !u. O P ?sfgK2 T e ,8 S . U e3 Ef C l 2 O l a g,ggIr 0 L s m 5- e8 e T t i A d o a 39o o D F
=,h 3oI_ 2 E 0 T6 $ he6 1
2 1 2 C7 0 0 E 9 1
^1d ,IiI_
L LR i{g~o 3 OE . 2 CB IEiIr 1 1 E H M
._ L S E V
t2pg,tw 1 B I A FO ) 0023 4064 809 607 6 7 40 T N n o . 1 022 1 1 1 2*
- = - - -
29 F w ( n n a 0501 202 2 20' 2 3C63 697 O- ht s 1 22 1 1 2 SY or a n 701 2 506 44972 6G TL I U e . L u 3364 1 1 22
- 603 1 1 1 4
2 h s BJ 0 n fi A 000000 r ind 00000 0072 e H %ao io t 00000 1 1 1 1 1 0060 1 000000 1 1 1 1 1 1 p nF s D o O c t m. e im O d. d o oL t . F .ru ot 53222 1 2563 1 21 5S1 4 1 o f d Np a + f o F c ofo O ea e n n Lf Y s m u s e s s a t no a e n e e ve n o R - e s t r te st r s ld s u o u r t t c n . ne t i A s n tu s v ne a p t n u n n t i v s o n n n t s v a se M ie u ro n l. r o e i . e _ c e s r ancu t o s y n gi s s e s c
- d. s v~ nr s p
- M S p s ph r n o s w x n o te h n at u t e n v io as eh ._ U tu cd 6 t u t s a . s s s a d dt e s o s t ( e S l r u et e l a n ip a l a u tp tp a es J tu n t r s t i t s t r o a s t t t n e o a o o o d o o o o r r tt, h o r c o t o e t r tr 4 t r ar a a tr sotca. lp tc o t v lp to i S t S u t c lo t J o e t t PS S ra
- A I M S S A t J
I P P pr s a"t r a' t h t tm aX D" t n s o - o u t p g *
- M u e, A S l ! e ! ,l ]lj 3l l ; 4 :2
- 4
- . - . . =. . . - _ _ _ - _ _ . _ _ _ _ _ - . - _ _ - = . -_- . -
i i 1 TABLE 23
SUMMARY
OF FOOD HABITS OF FISH COLLECTED AT LOCUST POINT
- JULY - NOVEMBER 1976 l ,
Food items 4 I t g = , t i l e 3 0 i 1
. e i s 2 i . o f 3 l , Month Spectos No. 7 Length (mm) e { e [ 8 $ f l
- Captwed Contatntre Mean Range
" d E
g { { $ 1 & f g O
]I 3 O
W w 6 8 dl di dl 5 3 3 g 5 a O e i i ___ Octateer letalurt,s netmatosus 1 100 227 - f,0 2
~
Morone chrysops 2 100 107 49-165 1 1 8 2 { Ncitropis atherinoides 1 100 103 - 20 357 104 Notropts Nafsontus S SCO 99 73-117 6 2 b O.2 0.2 1 34 0.4 Perca flavescens 5 60 155 00-214 0.2 1 1 Percopsis omiscomaycus 1 100 75 - 134 j ' Satctal 15 93 7 2 100 4 l-6 a 1 Novernbar Notropts atherinoides 1 Notrople tuadsontus 1 100 12 - Osmeria mordax 1 100 a - 13 1 20 14 5 54 i 4 Sutstotal 4 100 TOTAL- 02 4 11 1 I I e l 4 h l i j
f , TABLE 23 9 i
SUMMARY
OF FOOD HABITS OF FISH COLLECTED AT LOCUST POINT
- 1 JULY - NOVEMBER 1976 I
i Food items II d k d * . d 3 g 3 & .
- i ;I I 5 I 3 5 2 d
{ { 3
,5 I 5
> -s
.t
, s x
1 s 1 - g 2 c .s 1 2
.i _s Month Species . ,
3 3 y - e l 'I No. Length (mm) I C I F. g I c o j I _j . {s *
~.
Captwed Contatnino Mean Ranoa g h
- 3 l!
l P p g l ,s o g f Food j 4 g I - 6 6 b 6 0 6 $ 8 $ $ k { 2: 01 Octot,ec actaturus neta.losus (J 1 100 227 - 2 M>rone chrysops 2 100 107 40-163 to i-1 3 g tetroots other6noldes 1 100 303 - Notropis twassontus 5 100
' 00 73-117 0.4 0.2 2 0.4 0.4 0.2 0.4 Perca flavescens 5 60 165 80-214 * .
Percopsis omiscomayeus O.4 ! 1 100 76 - S4 total 1 16 93 levember Notropts atherinoides 2 100 4 1-0 1 3 Notropts f gasonius 1 100 12 - 1 1
, Osmorus mordsw 11 100 2 -
- Swtotal 4 1c0 TOTAL. - 02 e
1 l
, t 9
TABLE 23 a i , i i
SUMMARY
OF FOOD HABITS OF FISH COLLECTED AT LOCUST POINT
- j JULY - NOVEMBER 1976 I
i
- r .
e i i Food items He r n a 8 A e . _1 e _i .
< . ,e : s.
- e.: .
t.ength (mm) g " ' g # E Month Spectes No. % . f g Captured Contatntre Maan Range E g g .5 g 5 { g ~g g g *g Food ( w e I
~
o u 6" o S a 6 I e 1 8 x 8 c s 8 9 E s c I _ _I a u 1 4 a Octot>ec ictaherus netwtorus 1 100 227 -
) i X $
Morono chrysope 2 100 107 49-165 62 1 3 1 X Notropis attserinoldos 1 100 ,103 - 4 1 1 X tetropis budsontus 6 100 09 73-117 0.2 3 0.2 0.4 X X
+ Perca flavescens S 60 155 60-214 0.2 X .X Percopsis omiscomaycus 1 100 75 - X Sut> total 15 93 thvember Notropis atherinotdes 2 100 4 1-6 X i tbtropts.tu dsonius 1 100 12 - 4 X Osmorus mordax 11 100 2 - .
S4 total 4 100 4 1 TOTA 1. . 02 I . , Data presented as mean numboc of food Ltoma por fish. '
** "X" trmJtcotes the promeMe of a bod item.
e i l t e 1 . i a
\ l\I \ Illl
_ a
)
m p p _ ) ( V N H p n e
)
C 7//////// / 7/ - O N E ( g y 0-( , )6 l,h1$+ s G n x e Y l o O r X u O n e d e t a r
- T v
D6 E 97 g o r l o s e p 7 / //// nl
///// t C
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,E NIR 7' /l//// L U
J O E I NE EK GA _ E OL R DR
- / /// N U
J YO HF YS LT HN F Y TE NM OE
/ // /// W MR U NS AA EE -
AM / // R _ P 7 // // // ' 1 P A _ 7 _ i E R L - G FI 7// - f//////R A M 5 0 5 0 5 o 2 2 1 1
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,////// /, N U
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( 1 J L ~Nl H 1 TE NM OE MR NS AA U 7/2A_Y
. M EE ,k I
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_ G I F 5
/ / / / / / , / A R
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- . .lI ;l ' i
57 later in the season (Figs. 9-11). Alkalinity and pH remained relatively constant while the major tons such as calcium and sulfate decreased by 30-50 percent. Biological nutrients such as nitrate, phosphorus and . silica also showed dramatic decreases as spring algal populations utilized these materials. The water quality in the vicinity of the Davis-Besse Nuclear Power Station during the period of July through November 1976 was typical for western Lake Erie and showed normal seasonal trends. Water temperature fell 17 C during the 5-month period while the disscI.ved oxygen (CO) level rose 5 ppm (Fig. 7). In July 1976 the C:O at Station 1 (bottom) dropped to 5.0 ppm, the lowest value recorded during the, pre-operational study: Year Dissolved Oxygen Range 1974 5.7 - 14.1 ppm 1975 7.2 - 13.6 ppm 1976 5.0 - 12.5 ppm The International Joint Commissico recommends a minimum DO level of 6.0 pm for Lake Erie water. The high turbulence and sediment load of the lake in early spring improved during the summer as indicated by an approximate 2-fold increase in transparency, 2-fold . decrease in suspended solids, and 10-fold decrease in turbidity (fig. 8). ! Considerable decrease in water clarity was noted in the fall, particularly ! In turbidity and solids which increased by 2-fold. Slochemical oxygen demand, which is related to the suspended organic material in the water, was low and nearly constant throughout the year with a slight decrease in the fall. Similarly, dissolved substances in the water were highest in the spring and fall samples; cohductivity showed a significant decrease between March and April but remained relatively stable the rest of the year (Fig. 9). Specific tons sucn as calcium and sulfate were also highest in April and May, whereas other ions such as magnesium, sodlum and chloride were fairly stable throughout the year (Fig . 10). The important nutrients, such as nitrate, phosphate and siller , for primary productivity by green and blue-green algae and diatoms, had a peak in the spring, decrease-1 markedly during the summer and then increased in the fall (Fig. 11). The response of phytoplankton production to the availability of the nutrients is also shown on Figure 11. The diatom Dloom in April resulted in a sharp decrease in stitca, whereas the green and blue-green algae utilized j nitrogen in the summer and fall. ' The alkalinity and pH of the water remained fairly constant through-out the year (Figs. 7 and 9). Lake Erie is primarily a bicarbonate solution with a corresponding moderately alkaline pH of approximately 8.3.
FIGURE O . MEAN MONTHLY ALKALINITY, DISSOLVED SOLIDS AND CONDUCTIVITY MEASUREMENTS FOR LAKE ERIE AT LOCUST POINT DURING 1976, t
. Alkallnity (mg/l)
~~
Dissolved Sollds (mg/1) Conductivity (umhos/cm) s 300- - i / -
/ -
w m
/
200~ l 7 r
/ / l
'/ / / _.
^
/ / / r r / /
/ / / / / / / 7 100- / /
, ,/ / p ./ r ,/ l l . . , ,
/ . , , /
,, l , '/ / / / / ; / / p /
,, l, '/ / / / / / / /
/ / / b'/ / y$ /
; / / / ,
- o.. i / d(! / , / / / \ / .6 L _ L_ $/ .
MAR APR MAY JUNE JULY AUG SEPT OCT NOV
59 m L\\\\ g g weveapa%:ine Pw*2mer F 4 m a j E < F k ^ L NN NN NN g g g5 g o
" ~
L : a n u.ww.,u:~Mns"At z e g o a - 3 o o 8 g h W E O ~3 y 0 m LNNNNNN e bg 2-gQQ . ss>;= ~ > g w w eru n . WG Q l 5s tx N N N N N 8 g] , + ,
.. m a w ,. w w <
x OZ d- l > k IN \ \ N N 'N N N. d' gg ,, ....e.w w%.wveg=. JJ l U oe INNNNNNN 5
>; 4 .
. . . . - -..: 7.. uw #. ewa
. I-HT ZW j l 3s (N g y
11 -..
--_'N'N'N'N'NN n. I kh o' l '
~
W isNNNNNNNN I ( , M*NWM f
' & kdWA% 1 C. 1
- u. i '
l l 1 I INNNNNNNNNg j c w a+-w m m i l O O o o o,- o O 't O CJ
. . - , . - .m- - .- ,, -. , . , - - , , , - - , m
F IGURE 11. MEAN MONTHLY NITRATE, PHOSPHORUS AND SILICA CONCENTRATIONS IN LAKE ERIE AT LOCUST POINT DURING 1970, Nitrato (mg/l) Silica (mg/l) i (mgA) 18.0 S.O 10.0 7.0 7.0 5.4 (no./1) Phosphorus (mg/l) - 4-- 4 $- PhytoplarAton (no./l) - - 100,000 g .- . GO,000 I h g k - 80,000 p i - 5
/ l f , ,
1 0 - - 70,000 $ f -. GO,000
. / h i y j 4 2- -
h / ' h Y - - 50,000
\ l f
h 1 h I E : f --- 40,000
; / ? .'
5 30,000 lf ,
) - -
.. /f ,
e e \ f9 5
,i
'q 5
k- . ._ 20,000
, 1. > w
$ [ir ,\ b 7 7 ' ' ' '
O.2_ . ( / g$ -
~_' ~i
, E1 m l~_ , X ?O, , , l -! Q Q an 9 MAR ' APR MAY JUNE - f ULY AUG SEPT OCT NOV i
61 The bicarbonate in the water provides an abundant source of carbon for algae production. The pH showed a slight rise in surmmer (9.0 maximum) which corresponded with the bloom of the blue-green, Aphanicomenon sp. Station Variations. Stations 1, 8, and 13 are located approximately 500, 3,000, and 1,500 feet offshore respectively. Generally a slight temperature decrease was noted in an offshore dircction in the spring. More noticeable decreases were found for such parameters as conduc-tivity, most of the specific tons, alkalinity, B.O.D. , suspencied and dissolved solids, and turbidity throughout the year. Conversely, transparency increases away from the shore. Station 8 (the farthest offshore) had the best water quality; Station 1 (nearshore) had' the poorest quality for most parameters. The differential in water. quality values was greatest in spring and. fall which may have been related to seasonal storms. During the summer no significe r.t difference was found between the inshore and offshore stations. Differences between the surface and bottom water quality were slight because of the shallowness of this portion of Lake Erie. Some depression in the level of dissolved oxygen and small increases in the concentrations of dissolved and suspended solids were noted near the bottom , particularly at Station 1. Water Quality Trends. The Ohio State University, Center for Lake Erie Area Research initiated water quality studies at Locust Point in July 1972. Over the past five years most parameters have shown typical seasonal trends with only small variations from year to year.
. Trends for eight water quality parameters from that date through November 1976 are shown on Figures 12-14. Temperature and dissolved oxygen show typical seasonal trends for each year with only minor variations from one year to the next. Dissolved oxygen appears to have undergone more depletion in 1976 than in previous years.
Hydrogen-lon concentration and alkalinity remained fairly stable over the fcur year period. Transparency, turbidity, phosphorus and conductivity values have shown radical variations which are probably due to storms and dredging activities that have disturbed the bottom sediments. In general, no significant deviations from the normal quality of the water in this part of western Lake Erie have been observed in the past five years. l 1 - . . - . . . . . . . . . . . . . . - . . . . . . . . . . . . - - 1
. _ . . . _ . . _ _ . . _ _ _ _. _ _ _ _ _ _ _ _ ~ _ _ . . _
t i f i t FIGURE 12, TRENDS IN MEAN MONTHLY TEMPERATURE, DISSOLVED OXYGEN, AND j
" HYDROGEN ION MEASUREMENTS FOR LAKE ERIE AT LOCUST POINT r FOR THE PERIOD 1972 - 1970 '
r ! s a j 30 1
- i 4
- ,)
l 25 - Temperature ( C)
- j. .*
/
/ ,/- m 20 ,/* ,
M j I 15 '
- j. , Dissolved Om con (ppm)
- /
.N s N . ,
d
.N.- ~# ,
. J
/
*\ N,y N,/
/- *
=
. s) /. , ~ % ~e' p*
to j
\. \,,.-.
,/.f N,N .%,/j.
l */ *-' - - - _ _ _ _ . %,\. ,
'\ ,
t
- f * - / -.__,~j; Ions (pH),,.-._.,_N,,____,/* g,p*-*g,/ g f
3 ,/
/ }*/f r
Hydrogcry p \* -.f 6-
/ ,
t
---- No Measurements Available
/ N .
N
! /
/ 's o ' ' ' ' e ele e e e i e , , . . ,1, , , , ,,,, .iI N.
J A S O N DlJ F M AM J J A SO N Dl J F MA M J J A S O 1972 1073 1974 1975 06 4
.h i
f f FIGURE 13. TRENDS IN MEAN MONTHLY CONDUCTIVITY, ALKALINITY AND TURDIDITY i , MEASUREMENTS FOR LAKE ERIE AT LOCUST FOINT FOR THE PERIOD 1972 - 1070. 500 -- .
\
N No Measur ements Available N
\
\ Conductivity (umhos/cm) g /\ g e- o N/*
g -. 0)
\ .f /
am \/'e /. -
,s,,.s*,~~~/N.-.
/
, . . \.,.// .- .
,.I
\.f. ./ .
\,.. .s.
200- *
; e
/ ,
1 * *N AlkalIntty (mg/l)
- 100- .
jN w
- p7 -. e---*.--.____,/. .~.,,,/.,-*" fj ,. e-e-e-o,,,es ,_ ,
+ % /
N / / N g Turbidity (FTU) / *
~.-: ;/-f ,i, , ,.s,;,
o , s -. , s / i, , , , : t ,-,- -,-,- i, , ,.s: t :s._.-: . './ ,,I, , ,
,- y ,s..,_,_,-; a J A S O N D I J F M A M J J A S O N DIJ F M A M J J A S O N DlJ F M A M J J A S O N D IJ F M A M J J A S O N Dl l 1972 1973 1974 1973 gg7e I !i
FIGURE 14. TRENDS IN MNAN MONTHLY TRANSPARENCY AND PHOSPHORUS MEASUREMENTS FOR LAKE ERIE AT LOCUST POINT FOR Tite PERIOD 1972 .1070 e
\
1.50 g Nr> Aseasurements Avattable 1.00
- e o
. /
O.75
\I -
e o>
. Transparency (m) ,,o
/
/ e-
,i .
- l. ..
/- l /*Q e
- j' .
I *
/, je~~~. '
e
/
/
*/\ ./ 's
+. \. s 0.25
/
f , \
- l
\
g i f f it . \ / \e o
- , - ./ ' se Phosphorus (mg/t) f
~~,,___ *
._e-. / e T Y_,_e ile e e i e i e e e e i e1 e e ie i e e i *\ 9f 'le e - - ~ e.' na -t - o - . - f ~ i' a#l i e i e seI i e e Vie-o.* i I J A S O N DlJ F M AM J J A S O N D lJ F M A M J J A S O N DlJ FM AMJ J A S O N DI J F M AM J J A S O N d 1972 1973 1974 . 1975 1976 d O 1
~. __ . _ _ _ ._ _ _ _ _ . _ _ _ _ _ _ _
4 65 l
. Plankton Phytoolankton. The Center for Lake Erie Area Research has monitored phytoplankton populations at Locust Point since 1974 (Fig. 4). ; Radical differences were noted between populations in 1974 and 1975, but 77% of the variation was explainable by variation in physical and chemical parameters of water quality (Reutter, 1976). Bacillario-phycean and Chlorophycean populations observed in 1974 and 1975 were quite comparable (Figs. 15 and 16). The Myxophycean component of the populations accounted for the differences between the 2 years.
. No Myxophycean bloom occurred in 1974, whereas a huge Aphanizomenon i sp. bloom occurred in August 1975. This bloom was highly correlated with increased transparency (80% greater than in 1974) and decreased turbidity (20% of that observed in 1974) (Reutter, 1976). A correlation of this type was first hypothesized by Chandlerand Weeks (1945). Sacillartophyceae and Chlorophyceae populations in 1976 were
- similar in size and cor.9 position to those observed in 1974 and 1975 j (Figs. 5, 15, and 16). rhe diatom population, especially, was strikingly similar from year to year, with 1976 most resembling 1974.
Populations were always greatest in spring and fall, and pulses which begin and end abruptly were commonplace. Chlorephycean populations tended to increase in the fall. A very small pulse was observed in ! June 1975 which was not observed in 1974 or 1976. The 1976 Myxophycean population was between the extremes set forth in 1974 and 1975. A bloom of Aohanizomenon sp. occurred in July and August which corresponded well in time of occurrence with the 1975 August bloom, but, though it was slightly longer in peak duration, it was only one third the magnitude of the 1975 bloom and started and ended much more abruptly. Again, these pulses appear to be explainable by var iation in transparency and turbidity. 1 Transparency in 1976 was similar to 1975 and much greater than 1974, while turbidity, though more variable than in 1974 or 1975, reached a low in July similar to that observed in 1975 and below that of 1974 (Figs. 13 and 14). It should be noted that the increased number of taxa in 1976 was i mainly due to increased emphasis, on identifying specimens to the species level. Zooolankton. Zooplankton peculations at Locust Point have been monitored monthly during ice-free periods since 1972. This was the first year that samples were obtained in March. The monthly mean value for March of 32.4/1 was the lowest observed in our years of sampling at Locust Point. However, it was similar to that observed by Reutter and Reutter (1975) during March 1974 at Put-in-Say, Ohio. w w--w ww e . w r wyw e- --g-.- ,-r- e - + --,g.. g w - --r + -w-.-----rrpw,x- %p, - , - - -
-pw- 9 W-- ----+eep-^ w
j 08,000 nm
?'
Q Bacillariophyceae 20,000 - _ Chlorophyceae
' F Myxophyceae f
b 15,000 - m E o E as i [' o
!' 10,000 -
t T d 3f 5,000 - i ,) [
/ r
/ f
/
7 h ,_ O ' ' ' ---
!n E / ,e /
APRIL MAY JUNE JULY AUG SEPT OCT NOV FICURE 15 MONTHLY MEAN BACILLARIOPHYCEAE, CHLOROPHYCEAE, AND
, MYXOPHYCEAE POPULATIONS FOR LAKE ERIE AT LOCUST POINT - 1974.
i 1
315 200 , s 5 00 h 4 Ba;ttluriophyceae \
/
$ _ \
80 jd C hlo roph, 3ae
\
g 7 lb N gl N 70 . h i_ Myxophyceae \ t il.k x W6 y N &,
.S 60 - ,'
d, N v,.
.. ie E
'" %,.j
\
! .! N lf f S E
*~ k4 \ $
. - \ T 30 -
, x x g a "O -
N N 3 g g to - 3 - t f N N N -N 1 @# jj 0 m, m I N re r\ Plf- N P N L V 4 -r,a + . e APR MAY JUNE JULY AUG SEPT OCT NOV DEC FIGURE 16 MONTHLY MEAN BACILLARIOPHYCEAE, CHLOROPHYCEAE, AND MYXOPHYCEAE r. POPULATIONS FOR LAKE ERIE AT LOCUST POINT - 1975.
68 Three new monthly population highs and one new low were established in 1976 (Fig. 17). Zooplankton populations in April, October, and November 1976 were the highest observed for those
! months since sampling started in 1972. The July population was the lowest observed for that month. However, the population in April 1976 was similar in size to that of April 1975, and the population in July 1976, though less than 50% of the 1974 or 1975 populations, was similar in size to the 1972 and 1973 copulations. Results from other months in 1976 fell within the range of values from 1972-1975..
In general, the populations observed at Locust Point in 1974 and 1975 were higher than those observed in 1972 and 1973 (Fig. 17). Populations observed in 1976, as described above, were relatively similar to earlier results, except for October and November, but were more variable and fluctuated more than populations from 1972-1975. There are several plausible explanations for the variation which has occurred. Samples in 1972 were collected with a 3-1 Kemmerer water bottle at the surface. From 1973-1976 samples were collected by a vertical tow, bottom to surface, with a Wisconsin plankton net. A brief comparison study in 1973 showed that the vertical tow captured approximately 50 percent more taxa than a 3-1 grab (Reutter and Herdendorf, 1974). The stations sampled in 1972 and 1973 were similar to those sampled in 1974 and 1975, but not the same, while those sampled in 1976 were different from all 4 previcus years. In 1973 the intake and discharge pipelines were being dredged, and in 1972 tropical storm Agnes affected the weather. Due to the weather, samples were neither collected on the same day of the month each year nor spaced exactly one month apart. Hubschman (1960) pointed out the tremendous differences which occurred between daily samples, and these samples were taken monthly, while Wieber and Holland (1968) showed that even with replication, wide variation can occur due to patchiness In population densities. The high spring populations from 1975 were undoubtedly largely due to early warming and lower turbidity as the
- total zocolankton population was significantly correlated with both temperature and turbidity (r = 0.587 and - O.328, respectively)
(Reutter, 1976). Finally, operation of station circulating pumps was common in 1976. Rotifer populations from 1976 acccunted for many of the differences observed between 1976 zooplankton poculations and those from 1972-1975. Rotifer populations from April, May, August, October, and November 1976 were the highest observed for those months (Fig. 18). The October i rotifer population was approximately 7 times as large as those observed from 1972-1975. The November 1976 population was approximately twice as large as previous populations. These unusually large fall populations were due to sudden pidses of Keratella cochlearis, & cuadrata,
- Polyarthra spp. , and Synchaeta, sp. (Table 13).
I l
, - , ~--.-r-,- n, - - , ,- - . , , - - - - - - - - - - , - - - - - , - - - , , -
1400 -- FIGURE 17 MONTHLY MEAN ZOOPLANKTON g 1972 POPULATIONS FOR LAKE ERIE AT 1300 . _ l C 1973 LOCUST POINT, 1972 - 1976. 1200 . _ Q 1974 , y 1975 1100 ... [y 1976 1000 - - ( L \ a) N E 900 -- x 5m \ s _ 800 (
--~
h ! s f a E : s s d
- O e .
\ N -
m 700 - -
- s :
L . s !. \ o : s : -
. N . \ T . .
600 -- -
- s : \ l f :
c : -s : \ : : :
- s ; \ , . - l l l 500 N! s ! k f ! !
, \ : s : g-N\ : . 4 \ : s : . l 400 - s : N - 6, : N : ; ;
~
, : s : \ : X 5
- N : \ N : \ : : :
300 ~ N : \ \ \ ; ;
\ :.
L
. s . N .
-s : . . .
N : s : . N : s \ : 5 l -5 '
- X \ : s : \ : N : \ l :
200 _ s : . N N . s - \ . N .
\ \'.*:
- X s : s : s i N i
- s :.
x . y N : X g .
\ :
x
- N s
N g
\
g 100 j j \ j g g j \ j s j g : j g j. 1z:. i
....M..
\
\
. s :
t z.
\
s : 2. a X s N : . s: )
\
. W xN :.
L, N B : 8_xil __._
\
1.l :. 1 MAR. APR. MAY J U. I JULY AUG. SEPT. OCT. NOV. DEC. No samples were collected
FIGURE 18. MONTHLY MEAN ROTIFER POPULATIONS FOR LAl<E ERIE AT 700 __ LOCUST POINT, 1972-1970
@ 1972 __
9 0 000 -
~ '97U G h
(N g 1974 Q 0 6 G 500 . . Q 1975 N e 6 6 g 1976 - Q' e & G g b aoo - O N A 6 e ? e e A l X X
-l & # 4 N. !
X 6 e G ( X G -N a 4 4 E
- 300 - G s >< x
\ N g ! -N 9 @
-E \ G N X 5 l@3 \ @ s
~~
200 - -
\ \
E - 3 j \ lo N -x _N T O i l
\ d-0 -
w \ 3
. \. H
_\
\ N $ !
N OG
\ L @ \ ~p i 5 f \ Jl1 g' 100 -
& \ 4 V N b c N "43 @ X \ a -
l 3 \ @ -\ g _l
\ y N g I ,-
-g X \. 3- i x \ \ %' if V
N N r
}SEPT.
N N C [ O MAR. k MAY
\
JUNE Y \ ! \ W \- 1 L APR. JULY AUG. OCT. NOV. CEC. No samples were collected. 4 I e
71 i i Monthly copepod populations from 1976 were very similar to
- those observed in previous years (Fig. 19). In general, copepod populations were high from May-July with a June peak. Populations were extremely low in winter and spring. A slight pulse was occasionally evident in the fall.
Cladoceran populations in 1976 showed 2 pulses, one in June-July and one in September. It is obvious from Figure 20 that monthly Cladoceran po,sulations at Locust Point from 1972-1976 were quite variable. It does appear, however, that the 2 pulses observed in 1976 may be annual occurrences. Beathos Benthic mt croinvertebrate populations collected at Locust Point during 1976 were typical for populations along the south shore of western Lake Erie. Species composition, mainly immature oligochaetes and chironomids, was similar to that observed from 1972-1975. Populations from March-June were similar to preceding years, while populations ; from July-November were generally larger than populations observed in the past (Fig. 21). The most logical explanation for this increase
- in numbers in 1976 arises from the observation of previous years that the population increases with distance off shore, for in 1976 several of the near-shore stations (5' and 10) were eliminated, while several off-shore stations (26, 27, 28, and 29) were added. Results from 1976 support this hypothesis, for population size continued to increase in an ,
off-shore direction. Populations were somewhat inhibited at Stations 8 (intake), 12 (discharge) and 13 (plume area). This was undoubtedly due to the rip-rap material placed around the structures. . . Fish As in the past, the species composition and relative abundance in the catch varied by month and by season for all fishing methods indi-cating that a transient population was being sampled. This is not j surprising as there is little shelter at Locust Point to support a resi-dent population. Since this was a transient population, extreme caution I should be exercised when trying to quantitatively compare CPE results
- from year to year, as samples were collected monthly. In a resident l
. population, collecting samples one month apart would not produce serious errors, however, a transient population can change significantly
- e -- m ee = = = = . - ea -e, - e e e-w wry, n ,v - *- --
y,y ----e-,r .qw,.#-w,,,---iii- - - - - - , , - - - - - - -- m--,- - . q+m-- -7 s-c.%%--w, .--y u--pss -.
# .+-,,.g--.y--,+=m-w' -----.-r-me-- --= = - rc
FIGURE 19 MONTHLY MEAN COPEPOD POPULATIONS FOR LAl<E ERIE AT LOCUST POINT , 1972-1976 700 - g 1972 600 _ , @ 1974 y to 500 Q 1975
}E 400 Q 1976
-5 E , \
5 \ E'300 N _ 0_ \ G h200 - ^ k k3 N N !G N x z
\ l3 \ *l*
\ _ _ X
\ la 5 100 -
\ a lI4 C y (N % x N \ Q \" 4 X 3 -'
O m, ** b *
\' 4 *
\$E N \ _h \ & '
\ E X NO *U' '
MAR. APR. MAY JUNE JULY AUG. SEPT, OCT. NOV. DEC.
*No samples were collected.
l
FIGURE 20 MONTHLY MEAN CLADOCERAN POPULATIONS FOR LAKE ERIE AT LOCUST POINT, 1972 - 1976. 700 -
@ 1972
] 1973 600--
@ 1974 y 500 -
O e e Q 1976 5 400 N o _ l
'E 000 _
1 Q
, $ l T 4 s
\
o 200 - r 5 a t o' i N
\ O \ 6 l G E
c j _N - N G g 100 N4.h '
\ li4 _
O m 4 I -
\ U --- SE' .
- 2 - .M MAR. APR. MAY JUNE JULY AUG. SEPl. OC~I . NOV. CEC.
No samples were collected .
FIGURE 21. MONTHLY MEAN BENTHIC MACROINVERTEBRATE POPULATIONS f~OR LAKE ERIE AT LOCUST POIN1, 1972 1970.
- Q 1972
@ 1973 0 1974 4,000 -- @ 1975
[g 1976 g G f a G' / f3,000 0 [ 5 l
'E .o Q
G.
- G G
O h
/ $ G G' c G /
{i G G QQ G 2,000 -- g ' G KG g j g 2 a @ Xg s / g 7
-b G G
G G G 7 G ~ G G j
/
Q O f/ E_.
~
C' G G / Q G / Q / 1>
~ ~
hG G G h D hD XS l
~- G j f -
XG / b G / G l
/ O /
} ^
$ / $ , / @ 7 @ / G' ,! XG ': / X@ /
O 5
/ 6 / XO 5 h O Y f_. h
**** g **
X
/ XG *
/ XG / .G *
/ > G * / G' W+ _A_M / >' G
- _ /+N*
MAR. APR. MAY JUNE JULY AUG. SEPT. OCT. NOV. DEO.
- No samples were collected.
i 75 with time. This is especially true when comparing CPE results for schooling species such as alewife (Alosa pseudoharengus), gizzard shad (Dorosema cecedianum), emerald shiners (Notrocis atherinoides), , yellow perch (Perca flavescens), and the larvae of all species. When
- dealing with these populations and monthly sampling effort one should 1
not apply too much significance to CPE results. Results from previous :, ears indicated that although 47 different species have been captured at Locust Point since 1963, there were only 10 species which were of any real numerical or commercial significance ,. l (Reutter, 1976). In 1974, 1975, and 1976, 7 species, alewife, carp (Cyorinus caroto), gizzard shad, white bass (Morone chrysoos), emerald shiners, spottati shiners (Notroots budsonius), and yellow perch, constituted 97%, 99%, and 99%, respectively, of the total number of fish captured. Gizzard shad was the dominant species in 1974 and 1975, while alewife dominated in 1976 (Table 19). The 1976 populations were heavily weighted by the July shore seine catch (Table 43). In 1973, freshwater drum and channel catfish (Ictalurus punctatus) were also considered to be a significant component of the population (Reutter and Herdendorf, 1974). Herdendorf and Hair (1972) presented commercial fishing results from Locust Point from 1963-1972 which showed that carp, channel catfish, and white bass were the dominant species, .; composing 99% (by weight) of the total catch from that 10-year period. Walleye (Stizostedien v_. vitreum) should be added to the above Itst of I 9 species due to the emphasis placed on this species by sports fisher-
- men, commercial fishermen, and the Chio Olvision of Wildlife. There-
] fore, the 10 species of numerical and/or commercial significance at j Locust Point were alewife, freshwater drum, carp, gizzard shad, channel catfish, white bass, emerald shiners, spottall shiners, yellow perch, and walleye. , 1 The size of the yellow perch population, an important commercial i population, appears to have varied considerably from 1973 to 1976. I Gill nets were the best Indicators of this. During April, May and June,
, the CPE of yellow perch with gill nets was 12 in 1974, 176 in 1975, and
) 41 in 1976. Van Vooren et al. (1975) also observed this variability from 1973-1975, but their results indicated a high 1974 population and low j populations in 1973 and 1975, the reverse of the present findings. This ; I type variability is not unusual since this is a transient, schooling population and since Van Vooren et al. (1975) sampled only in spring and fall with a trawl. L i i Ichthyoplankton sampling has shown the same variation observed with gill nets. Emerald shiners composed 81% of the 1974 larvae, 1% of the 1975 larvae, and 60% of the 1976 larvae. Yellow perch composed 5% of the 1974 larvae, 70% of the 1975 larvae, and 4% of i
-' - . , 5 y . .- -,y,-q e- - - ~ .- , -a %y -
w,- -
-w-m m-- --.i -_-,--e-m---,--weee. .e.- e-
76 1 the 1976 larvae. Gizzard shad larvae increased greatly to constitute 347? of the 1976 population. Much of this variability in the yellow perch larval population was undoubtedly due to the variability observed in the adult population. Although there is tremendous variability in the tchthyoplankton catches, an important conclusion can be drawn. There are only three species which contribute significantly to the tchthyoplankton - populations at Locust Point: yellow perch, emerald shiners, and gizzard shad. It also appears that these species occur from late April through July in the following order: yellow perch, late April to late May or early June; gizzard shad, June to late July, and emerald shiners, late June and July (Reutter, 1976). Yellow perch were most abundant in late April, giczard shad in mid-late June, and emerald shiners in late June and early July. Entrainment of the larvae of these species is most likely to occur at these times. It should be ncted that the loss of a particular species from the catch does not necessarily mean that the species has left the area, for they may still be present, but large enough to avoid the net. This occurred in 1975 and again in 1976 when gizzard shad, which were extremely abundant in the late June fry nets, were absent from the July fry net catch and appeared suddenly and in huge numbers in the July shore seine catch (Table 43). Of the 3 species, yellow perch
; is the only one which warrants special attention, although entrainment l of all larvae, if or when it occurs, will be documented after Unit 1 is operational.
t In 1976, control stations vere sampled on either side of the intake (Station 8) and plume area (Station 13) to determine if unusually large fish larvae populations were occurring due to possible spawning in the l rip-rap material around these stations. It appears that populations at Stations 8 and 13 were normally within the range set by the control stations indicating that populations occurring in the vicinity of the intake and discharge were not unusual for the shore of Lake Erie near Locust Point. As in 1975, Toussaint Reef was sampled in an effort to compare ichthyoplankton populations from a known spawning reef (Saker, 1969) with those near the shore at Davis-Sesse. Again, in 1976, larvae pcpulations near shore were much larger than those on the reef indicating that larvae migrate to the inshore waters after hatching. The number of fish eggs collected has changed drastically. In 1975, 190 eggs were collected and 9876 of t".ese were from Toussaint Reef. In 1976, 4,838 eggs were collected with none coming from
. - - e - _ -,u.- ,t
77 Toussaint Reef. However, the fact that 90% of the eggs collected were taken on one date, 17 June, makes one suspect that this is natural variation caused by the frequency of the sampling schedule. The time of the occurrence of this large catch, 17 June, indicates that no yellow perch or walleye eggs were collected. The fact that approximately two weeks later a large number of emerald shiners and gizzard shad were captured indicates that the eggs were probably of these 2 species. The fact that 95% of the eggs collected at the bottom occurred at Staton 8 or 13 indicated that spawning was probably taking place in the rip-rap around the intake and discharge struc*ures . Again, the date of this collection, 17 June, eliminates walleye and yellow perch from the list of possible spawners. Food Habits As in 1974 and 1975, zooplanktonic crustacea were abundant in the stomach contents of fish from Locust Point. Caution is essential in the interpretation of Table E3 for the same fish species were not sampled each month. In general, fish at Locust Point were relatively opportunistic and size selective feeders. Young-of-the-year gizzard shad, as evidenced by the shore seine catch, were abundant in July. They were also abundant in the stomachs of white bass and walleyes. The presence of Leptodora kindtli in fish stomachs corresponded well with their abundance in benthos samples. The fact that Lectodora was consumed primarily by bottomfeeders, channel catfish (Ictalurus cunctatus) and brown bullhead (Ictaturus nebulosus) indicated that its presence in- the penar dredge was probably due to its density near the bottom and not caused by collection on the penar screens as it was lowered. Since 1974, nothing extraordinary for the south shore of western Lake Erie has been observed. m q w w
78 LITERATURE CITED American P.;blic Health Association. 1971. Standard Methods for the Exarystnation of Water and Wastewater. 13th ed. APHA, New York. 847 pp. American Society for Testing and Materials. 1973. Annual book of ASTM standards, part 23, water; atmospheric analysis. ASTM, Philadelphia. 1108 pp. Sailey, R .M. , J.E. Fitch, E.S. Herald, E.A. Lachner, C.C. Lindsey, R.C. Robins, and W.B. Scott. 1970. A list of common and scientific names of fishes from the United States , and Canada. Third ed. Amer. Fish. Soc. Spec. Pub. No. 6. 150 pp. Baker, C. 1969. Lake Erie fish population trawling survey Chio j Dept. Natural Resources, Columbus, Ohio. Div. Wildlife Project l F-35-R-7(3), U.S. Fish and Wildlife Service Progress Rept. 32 pp. l Brinkhurst, R.O.1963. Taxonomical studies on the Tubificidae (annelida, Oligochaeta) g R . Woltereck, ed., Internationale review der gesamten hydrobiologie. Systematische belhefte
- 2. Akademie-Verlag, Berlin, pp. 1-89.
Brinkhurst, R .O . 1964 Studies on the North American aquatic Oligochaeta I: Naldidae and Opistocystidae, Proc. Acad.' Nat. Sci. , Phil. 116:195-200. Brinkhurst, R.O. 1965. Studies on the North American aquatic Oligochaeta II: Tubificidae. Proc. Acad. Nat. Sci . , Phila. 117:117-172. Brinkhurst, R .O . , A. L. Hamilton, and H.S. Herrington, 1968. Components of the bottom fauna of the St. Lawrence Great, Lakes. Univ. Toronto, Gt. Lakes Inst. PR 33. 49pp. Chandler, D . C . , and 0 . 8. Weeks . 1945. Limnological studies of western Lake Erie V: relation of limnological and meteor-clogical conditions to the production of phytoplankton in 1942.
- Ecol. Monogr. 15
- 435-456.
l Chengalath, R . , C .H . Fernando , and 8.G . George. 1971. The planktonic Rotifera of Ontario with keys to genera and species. Univ. Waterloo Biology Series, Ont. No. 2. 40 pp. l
' ~ ' ~ ' ~~
_ .- - _ _ _ _ _ . _ __ li ,. Z
79 ' Collins, G . B. , and R .O . Kalinsky. 1972. The diatoms of the Scioto River basin. The Chio State Univ. Columbus , Ohio. The Dept. of Botany, unnumbered mimeo. 18 pp. Eddy, S . , and A.C . Hodson . 1954 Taxoncmic keys to the common animals of the north central states. Eurgess Publish-ing Company, Minneapolis, Minnesota. 162 pp. Ewe rs , L.A. 1930. The larval development of fresh-water copepoda. Contrib . No. 3, The Fran: Theodore Stone Lab, Put-In-Bay, Ohio . 43 pp . Hair, E.M. and C.E. Herdendorf. 1973. Environmental evaluation of a nuclear power plant on Leke Erie. Tne Chio State Univ. Columbus, Ohio. Project F-41-R-4, U.S. Fish and Wildlife Service Rept. 45 pp. Herdendorf, C.S. and E.M. Hair. 1972. Aquatic biology of Lake Erie in the vicinity of Locust Point, Ohio. The Ohio State Univ. , Columbus, Ohio. CLEAR Tech. R ept. No. 23. 30 pp. Hubschman, J .H . 1960. Relative dally abundance of . planktonic crustacea in the island region of western Lake Erie. Chio J. Sci . 60:335--340. Jahoda, W.J . 1948. Seasonal differences of Diaptomus (Copedpoda) in western Lake Erie. Ph. D. Thesis, The Ohio State Univ. , Colun-bus, Ohio. 100 pp. .. Klemm, D.J. 1972. Biota of freshwater ecosystems identification manual No. 8 Freshwater leeches (Annelida: Hirundinea) of North American. U.S. E . P .A . 53 pp . Mason, W.T . 1973. An introduction to the identification of chironomid larvae. Fed. Water Poll. Contr. Admin. 89 pp. i 1 Pennak, R.W. 1953. Fresh-water Invertebrates of the United j States. The Ronald Press Company, New York. 769 pp. I Reutter, J.M. and C.E. Herdendorf. 1974 Environmental evalu-ation of a nuclear power plant on Lake Erie. Chio State Univ. , Columbus, Chio. Project F-41-R-5, Study I and II. U.S. Fish and Wildlife Service Rept. 145 pp. l l
80 Reutter, J .M. and C.E. Herdendorf. 1975. Pre-operational aquatic ecology monitoring program for the Davis-Besse nOclear power station, unit 1. The Chio State Univ. , Columbus, Ohio. Progress Rept. July 1 - Dec. 3 , 1974 Toledo Edison Co. 123.'pp . Reutter, J.M. and C.E. Herdendorf. 1976. Pre-operational aquatic ecology monitoring program for the Davis-Be'sse nuclear power station, unit 1. The Ohio State Univ. , Columbus, Ohio . Progress Rept. July 1 - Dec . 31, 1975. Toledo Edison Co. 156 pp. Reutter, J . M. 1976. An Environmental Evaluation of a Nuclear Power Plant on Lake Erie: Some Aquatic Effects. Ph.D. Dissertation, The Ohio State University, Columbus, Ohio. 242 pp. Reutter, V.M. and J .M. Reutter. 1975. Zooplankton of western Lake Erie at Put-in-Bay; a quantitative study, April 1973 - , March 1974. Ohio J. Sci. 7:256-262. Service, J. 1972. A User's Guide to the Statistical Analysis System . North Carolina State Univ. , Rallegh, N .C. 260 pp. Stein, C.B.1962. Key to the fresh-water mussels (Family , Unionidae) of western Lake Erie. Ohio State Univ. Museum of Zool. Mimeo. 7 pp. Taft, C . E. and C .W. Taft. 1971. The algae of western Lake Erie . Bull. Chio Biol. Survey, New Series 4:1-185. Torke, B.G.1974. An illustrated guide to the identification of the planktonic crustacea of Lake Michigan with notes on their ecol-ogy. Center for Great Lakes Studies, The Univ. of Wisconsin-M!1waukee , Special Report No. 17. 42 pp. Trautman, M.B. 1957. The Fishes of Chio. The Chio State Univ.
. Press, Columbus, Ohio. 683 pp.
Usinger, R.L. 1956. Aquatic insects of California. Univ. Calif. Press, Berkeley. 508 pp. i ! Van Vcoren, A .R . , D.H. Davies, and G . A . Emond . 1975. Lake' I Erie fishery Research. Chio Dept. of Nat. Res. Div. of ; i Wildlife. Project F-35-R-13. 55 pp. I
**-.~
~ - - = . . . - - - . . . .. . . . . . , ,_. , ,,
, . , - . .- - --n , -,a , -- , -
81 Walter, H .J . and J . B . Eurch. 1957. Key to the genera of fresh-water gastropods (snails and limpets) occurring in Michigan. Univ. Mich . Museum of Zcol. , Cire, No. 3.8 pp. Ward, H .G. and G.C. Wnipple. 1959. Fresh-water Biology. 2nd ed., ed'. , W.T. Edmondson. John Wiley and Sons, New York.1248 pp. Welch, P.S.1949. Limnological Methods. McGraw-Hill, New York. 381 pp. Wieber, P.H. and W.R . Holland. 1968. Plankton patchiness: effects on repeated net tows. Limnol. Oceanogr. 13:315-321.
- -e oee- .W =w , n.*-. . , , , .
1 82 APPENDIX A PHYTOPLANKTON POPULATIONS FROM LOCUST POINT, LAKE ERIE JULY - NOVEMSER 1976 l 1
. . _ .. ,, , - - - . . . ~ . -
- 83 TAELE 24 .-
ANALYSIS Cf PHYTCPLANKTCN POPULATIONS AT LCCUST POINT
- 20 July 1975 Stat ion 1 I Station 3 Iet=Ucn 6 i et=rin.s n i Mean S.O. M cn S . D. 6 Mean i S .O. I Mecn : S.0.
SACILLARIOPHYCEAE (D[ atoms) Asterionella spp. 21 30 10 14 11 15 Centrics (strgte celled) Cymatecteurs so. Otatcma clorantum Clitems wtoc.re f:r-acttsrta ecterensis 168 235 148 14 79 110 200 13 L spp. 253 354 66 92 Gyeesfema sp. 3,talostem sm. 378 296 09 14 66 61 67 93 Naviculcid Step %rediscos sp. 30 41 Syned-a sp. Tabellaria s.,s. 21 30 10 13 Subtotal 841 473 256 55 221 126 276 120 CHLCRCPHYCEAE (Green Algie) Actinastrtm 7 Structcarta sp. 231 59 28 GC 164 46 95 53 Clotitricosts to-otesima 42 59 11 15 Closterium sp. Coelastrum reticulata 42 59 . 22 . o to 13 Cosmarium sp. to 14 to 13 AHerosecca sp. 20 28 11 15 Mugeef e sp. 107d 334 207 290 504 216 694 14 C:cvutic cp. +2 0 88 123 Pando-tr s sp. Pedinstrum ductex 210 294. 346 70 197 276 380 53 L simo!!x 1137 826 493 111 646 199 42S 14 Scened esmus sp. 11 15 Sci- eederta setigera 11 15 StmrteWm paradoxum 63 88 30 42 22 0 19 27 Wetallia sp. Suttotal 2041 1C92 1165 496 1687 491 1636 27
- )!NOPHYCD E (0troftsgellates)
Cerettum Hrundt etta 168 113 40 0 99 46 133 1C6 G!sredinium sp. 10 14 Peridia!um s,o. Suttore t 168 118 50 14 99 46 133 106 MYXCPHYCEAE (Bloo-Green AI;ae) Anabeer,a soiroidas A sp. 148 207 11 15
/.q:hsrt:omenon sp. 141561 53782 ?11185 11185 t15972 12034 78356 2503 Apbarecansa sp. 1726 ,
2416 759 181 340 476 Aoher.sth ce sp. 42 59 Chroccoccua 11mnetteus 66 92 C. spp. 21 30 to 14 77 108 75ertsmocedta sp. 21 30 40 56 22 31 19 27 Mlerocyrtis in:erta 337 472
% sp. 1369 1353 148 125 E65 659 314 14 Occittntert:: sp. 42 59 217 SG 337 43C Suetotai 145257 31gs; 1?2330 117C03 115CC 12524 78689 2541 TOTAL- 149117 na;, 1,3003 12074 11o337 13C93 , 80734 2341 I
Cata presentos ac r,o. of whole cegousms/l and computed frem 2 vertical tows with a Wi;consin p*.cnkten not (12 cm diameter , O.C30 mm mesh) ct each samplirt station. S.D. = Standard Deviction
84 TASLE 24 ANALYSIS CF PHYTCPLANKTCN POPULAT!CNS AT LCCUST POINT
- 20 July 197S TM Smti n 9 i Staticn 12 i Station 13 I Starim 14 I Mean s.o. voan I s.o.1 Mean I s .o. 6 Mean i s . o .
BAC:LLARICPHYCEAE (Diatoms) Asterionella spp. 20 28 9 13 Centrics (strnte cetted) 14 20 Cymetootoo a sp. 10 14 Olatoma etor-astum Of stoms vulcoro Fraaitaata cote.9ensis 190 64 127 178 207 290 177 248 L spp. 113 158 20 28 161 202 Gyrostqma sp. 10 14 Metosira spp. 50 15- 42 59 89 14 77 13 Naviculoid 20 28 9 13 Sterharediscus sp. Syn =dra sp. 9 13 Tate!!sria sp. sutt:tst 240 55 296 59 375 358 442 47 CHLCRCPHYCEAE (Green Algae) Acticsstrum sp. 9 13 E!re.: !earia sp. 59 28 197 39 138 56 101 71 Ctestaciocsis f oratssims Closterium sp. 14 20 Costastr um reticulata 33 10 10 14 Cosmarium sp. 13 18 . 10 14 9 13 Microccora sp. 7 to 14 20 20 28 Mu-=otta sp. 210 294 997 452 453 193 720 346 Cowstis sp. 7 10 56 78 20 28 17 24 Panecetna sp. l Pediam um dsetox '341 74 295 413 187 262 152 213 L sir- elex ; 544 84 1096 591 650 249 904 319 Scerecasmus sp. 7 10 Sc'r :occerta scticora S!?urestrum carsdoxum 14 :
, i%) 34 48 W es*ella sp.
Suttots t 1221 202 2683 205 1488- 317 1946 462 DiNOPHY'CEAE (D!nerlagellstec) Carettum hieuMinstla 99 10 70 20 50 69 43 13 G1erectnfum sp. 9 13' Peridinium sp. 7 10 9 13 Suctetal IOS O 70 20 50 69 61 12 MYXCPHYCEAE (Blua-Green Algse) Arubneaa so!roides 20 10 A. sp. Achan(zomer en sp. 63928 459 98505 14853 48571 67999 58330 15532 Aphanceaosa sp. 85 119 562 737 434 6C6 SIS 722 Achar et* ees sp. Chreccoccus timreticus , 7 to 9 13 C. soo. 13 0 14 20 30 42 26 35 Mart emc: adin sp. 20 2G 14 23 10 14
- Microcystis incerta 492 C89 l
M. sc. 256 104 1110 757 138 193 769 721 Ose!!!atoria sp. 20 2: 546 904 2DS 414 127 178 Subtctal 64349 514 101343 13230 19479 69270 59777 153C8 j TOTAL 65D16 773 101391 12635 51393 7C012 62220 15190 Data procent d as no, cf wNic crganisms/l and ecmputed from 2 ver tical tows with a W:scensin plankton net (12 cm diameter , 0.000 mm mosh) at each sampling station. S.O. = Standard Ocviation w<m- o e an e * - -m o e ,s ,w ,
85 - TABLE 24 ANALYSIS CF PHYTCPLANKTCN PCPULATIONS AT LCCUST PCINT *
- 20 July 1976 l Tm S' ' f 0" O f S'l*'IC" 2$ l S h 'I *" 27 '"n 6 Mean iS.D. I Moan S.O. Mean S.O. 'Mean S.D.
l GACILLARIOPHYCEAff i (Olatoms) Aster tonetta spp. 24 34 16 0 Centrics (single celled) 26 32 Cymatonteura sp. Diatoms etoma'um 0:etems vut;are 24 34 i Fea tilaria cotseensis 413 248 328 22 245 343 53 74 L spp. 186 260 15 21 Gyro *fcma sp. Melostra spp. *l4 34 42 13 15 21 Navicutold - 71 99 16 22 . 4 Stecheredireus so. 1 Syn =dr a sp. 71 34 *16 22 1 Taoattarts sp. 106 148
; S.utotal 733 429 376 69 499 60 83 32 i Cht CRf :PHYCEAE j (Green Algae) i Actinastr=.:m sp. 74 ~. .59 12
'12 j GiructeaMa sp. 59 49 53 12 4
Ctester r eosts loncissima 35 49 90 80 9 13 8 12 Clesterium sp. Costastmm ret! utata 24 34 8 12
- 8 12 CosmeMum sp. 25 35
, Mteroscora sp. 49 46 ' 9 13 15 21 M.-:eotta sp. 1168 1635 760 48 225 126 Coevstis so. 35 49 - O .. O Pa nc. rin g sp. 12 17 , Pectastet m doctex 199 ,52 418- , Si 177 248 135 189 L sin elex 259 6t$ 459 92 775 287 570 378
, Scarsdesmus sp. 8 12 9 13 8 12
) Sc.coedeMa seticean I 1 Staurast >m car adoxum 9 17 16 0, 26 32 8 12 Westslis so. 33 48 Sul: total 1803 1534 1172 92 1841' 122 10'40 11 DINCPHYCEAE (Dinoflagellates) Cerattum h!rur.dicella 71 66 246 115 42 59 38 12 Glemf.Num sp. Pertdtntum sp. 12 17 8 12 Suttotal 83 50 254 127
- 42 59 38 12 4
MYXOPHYCEAE l (Blue-Green Algse) i Ansbaena solroidas 12 17 74 35 A 45 63 sp. 36 50 17 0 . 53- 74 j Achanizorremn sp. 50032 563 120851 15245 66256 4437 64598 6962 Achar oca=za sp. 154 216 894 57 406 568 390 546 Acharothece sp. 36 50 Chroocuceus timnaticus 16 22 2d 32 C. spp. 41 12 26 32 Mer !sn coad!a_ sp. 34 as Microcystis treerer. 169 237 i M_. sp. 578 63 SS6 104 820 273 578 95 OJcittator f a sp. 4'? 34 359 35 228 319 30 42 Sur: total 51320 710 122911 ,15073 67082 3466 '65594 6143 TOTAL 53939 1303 !24S13 ,15359 70364 3500 cS345 F^OO Data presented as no. of whole organisms /t and computed from 2 vert! cal tows with a Wisconsin plankton net (12 cm diameter , 0.0S0 mm mesh) at each sampling station. S.O. = Standard Deviation 4 .-
. ..wi+ ---y ., 7_p, , --i--e,- -->- ---e,-- ---.m-gye-- .=-.---gy--rc. -p y,. ,.# maw ----m9yM 'ry ***-W7w***--F'F-*
- ~ _. _ _ . . - . ._ - -. _ _ _ - - - .
a 86 . 1 TABLE 24 l ANALYSIS OF PHYTCPLANKTCN POPULATICNS i AT LCCUST POINT
- 20 July 1976 c,tatinn G IMean/
TAM Mean S.O. Station S.D. BACILLARICPHYCEAE . l (Clatoms) Astertonetta spp. , 9 9 Centr-tes (single celled) 3 8 i Cvmetooleura sp. 'I 3 j Otetoma atomstum Diatoma vulgare 2 7 i Fesettaria ceterensts $64 118 223 140 j 63 4 5 Spp. 87 Cyrostoma sp. 1 3 Motestra spp. 12 17 2 96 ! Naviculoid . 9 20 Stechanodiscus sp. 2 8 '* 30 8 Syredra sp. 1 TabettaMa sp. 1 g7 Subtotal CHLCRC PHYCEAE j (Green Algae) Actinastrum sp. 11 25 BtructeaMa sp. 120 34 99 71
, Closterloosts tontsoima 12 17 16 26
) Closterium sp. 1 4 ; 1 Coetastrum retteutata 84 84 19 24 I Cosmartum sp. 6 8
'Microsoora sp. 108 118 19 30 Mu;eotta sp. 1692 252 670 476 Cocystis sp. 22 27 Pancortna sp. 1 3 Pedtastrum ductex 744 202 291 165 L simetex 624 101 660 258 Scoredesmus sp. 48 34 7 13 Schroederia setteers 1 3 i Staursstrum part.doxum 72 34 24 22 ! Westetta sp. 3 9 Subtetal 3504 8CS 1847 743 DINOPHYCEAE (D(r'orlagellates)
Cerattum hirundtnetta 216 168 101 70 Glenodintum sp. 1 4 ; ! Per 'dtntum sp. 24 34 5 7 l . Subtotal 240 202 107 73 ) MYXCPHYCEAE (Glue-3reen Algae) 3 ' Anab. *na sotreides 12 23 A. sp! " 84 17 27 45 Mhanizomenon sp. 65310 6444 83087 30492 Anhanocaosa sp. 482 462 , Achanothece sp. 6 15 i Chroococcus limneticus 10 19
- l C. spp. 20 22 j Merismocedia sp. 14 14 Microcystis incerta 77 100 j M,,,,., sp.
_ 624 101 626 366 CsettlateMa sp. 393 554 242 199 Suetotal S7CCO 8585 84301 31127
. TOTAL 71370 713 t 87?ao P 09S __
!
- Data presentac as no. cf whoto organisms /t and ccmputec frem 2 vor ttcal tows with a Wisconsin plankton nst (12 cm diameter. 0.080 mm mesh) at each sampling station.
S.O. = Standnec Ceviation i J l - - - - . . . - _ . - l _ . _ ..___ _, __
87 TAELE 25 ANAlbSIS C1: PHYTOPLANKTCN PCPULAT!CNS AT LCCtJST POINT ' 10 A4, gust 1G76 Station 1 l Staticq 3 I St3t'c" 6 I etntMn 8
, Mean S.D. Mcan ! 3.0. Mean S .O. I Moen i s .O.
BACILLAR;CPtfrCEAE (O tatoms) 9 11 AetmeMn11ta for mosa g ij Cyctetetta sp. 36 50 17 24 Cvmarooteur a sp. 143 53 l Fracitar fa _cetenens!3 738 455 585 340 111 38 630 147 L spp. 708 330 540 176 782 119 968 200 Metosf ra islandlea 4 1402 259 729 88 910 155 S cranulata / 15 0 Naviculoid 9 13 983 158 Sttohsr*cdiscus bireerams 1032 535 891 214 1233 _132 15 O L terols .. Suttctal 38SO 391 2700 428 3053 129 553 277o CHLOROPFNCEAE (Green Algae) Actinastmm sp. 17 24 90 105 Etructeart t sp. 45 21 50 3s 17 0 30 0 Coetsstmm retteulatum 45 63 27 38 43 60 g spp. 18 25 23 11 Cosmertum spp. 9 13 17 24 Otet/ochs.r'um cop. 15 21 Eudor ina so. 36 0 9 13 Goten:<tna spp. M!c osncra sp. 30 0 9 13 30 30 21 Mu;ectla sp. 45 21 180 0 43 I? 60 84 OccAts spp. 119 125 36 0 17 J Pedias; rom b(radiata 'S 21
& duplex 15 21 33 25 145 36 928 32 L simotex 1601 372 1404 151 1462 3C3 8 11 Scenedesmus sp. 15 21 15 21 S aur astrum par acoxum 15 21 ' Subtetst 2010 329 1791 63 1753 283 1254 176 CHRYSCPHYCEAE (Yellou-Green Algae)
Tribonema sp. DINOPHYCEAE (Dinorlagollates) 45 0 Carattum h!rundtretta 89 0 90 50 34 0 15 0 Per tdinium sp. - 30 42 9 13 Sudtotat 119 41 90 51 43 15 60 0 MYXOFHYCEAE (Glue-Gr cen Algae) Anabaera soir nides 118 C 135 88 til 36 165 12E
~A. sp. 15 21 90 50 60 13 Aohanizomenon sr,. 39693 340a 106380 27392 105C01 24122 105398 35180 Anhanocarsa sp. G71 311 288 48 621 200 675 C Acharrath. ten sp. 74 62 54 50 60 36 15 0 Chreococcus sp. 30 0 36 0 0 13 113 05 CoelosehtrutM 30. 63 13 SO 60 Gome.$9chaeH4 sp.
Lynabya sp. 17 24 353 95 Mtere vstis tr'cor*a 384 207 450 445 238 48 255 21 h1. so. _ 7C8 83 COG 151 315 84 1056 GC Csettlatoria spp. 1000 248 1890 33 SS7 214 ' Suctotal 436G3 3251 103701 27E85 TOTAL 107359 24199 1C8030 35574 49702 3357 ?14372 ,20,*20 112:08 24622 112114 36303
' Cata pr escntad na no. of whole organisms /l ar.d cor cuted fr om 2 vertical tows with a W'sconcin plankton not (12 cm diamr*ter. O.C30 mm mesh) at each samplit g station.
.S.D. = Stand 2rd Deviaticr1
88 TABLE 25 ANA (SIS CF PHYTCPLANKTCN POPULATICNS AT LCCUST POINT
- 18 AuMt 1973 S%tien 12 i Station 13 StWen 14 I 9Mtiin 18 I TM Mean iS.D. uern S.O. Mean S . D . l Me t. S.O.
BACILLARIOPHYCEA E (Ctatoms) As*erio~til4 fermosa _ g 11 Cyclotolta so. 30 14 8 11 20 28 Cyr-o*coleure sp. 10 14 Femit wia cotansnsis 144 67 140 29 96 45 160 56 F. s;p. 1644 118 1230 42 730 112 18C0 56 ((e199tra lstandle.t 14C4 238 1020 196 576 67 1910 70 72 101 20 28 40 0 Uraculea Naviculoid 12 17 2160 571 1420 168 872 101 1C90 70 S'eoMr.eds us binderscos 48 34 50 70 8 11 60 20 S. teruts . 823 3910 266 2304 202 5630 126
~Sut,totat 5484 CHLCROPHYCEAE (Creen Algae)
Actir-es*aum sp. 36 17 40 0 56 58 50 42 8truelearia sp. 12 17 30 14 24 11 30 14 Costastmm rettet.ta'um C, app. 14 10 Cesmartum spp. 24 0 60 56 OtcrvSc!-eatum sop. 8 11 Euderies sp. 30 14' 16 0 20 0 Gcian'< ten sop. 12 17 to 14 16 22 Microscera sp. 24 34 Muqeetta sp. 60 17 100 28 32 45 20 0 Occystis Opp. 10 14 10 14 Pe Me. rum blesd!ata 84 17 70 70 32 0 SO 14 P. cuttex 30 42 1656 134 1100 290 824 325 1650 70 [ stenole_x Scenadasn us sp. 24 34 10 14 S'eurastaum paracoxum Suttetat 1032 151 1400 168 1CCS 380 1910 70 Cl-RYSO PHYCEAE (Yellow-Green Algae) Tribonemn sp. g, 3j DINOPHYCCAE (D noflage'..ates) Cerp. tium hirundinetta 72 34 60 56 16 0 50 70 Peridinium so. 60 17 - 20 0 8 11 60 56 Suttoral 132 50 80 56 32 0 110 126 MYXOPHYCEAE (Blue-Green A!;ae) Ar.ebaena sotroid s 240 101 270 42 13S 34 240 112
& sp. 12 17 30 14 8. 11 20 0 Achent:cmonen sp. 69516 5328 82730 9142 125312 63414 60110 17150 Aora-oescra sp. 1C92 521 670 70 456 78 730 42 Accanot' e:e sp. 10 14 8 11 30 14 Chroccoccus sp. 20 28 C3sicsc.Maruim so. 252 113 30 14 32 45 100 53 Gorrnretschaeata so. 156 218 Ly05yacp.
uter ccvstis treerta 708 420 320 94 144 0 520 140 M. so. ' 408 0 200 42 128 22 470 42 C7cittatoria r; o. 16C8 101 1000 1420 448 170 1230 70 Suttetai 73393 4440 SS310 7010 12CtiT2 63258 63470 17262 TCTAt 31540 7241 91760 7420 13CC16 G3918 71180 175S4
- Cats p osented as ro. of wholo organisms /l and comcutad from 2 vartical tows with a Wisconatn plarkton not (12 cn clarr yter,0. 30 mm mesh) at each sampling statien.
,S.D. = Standard Ccviation
09 TABLE 25 ANALYSIS OF PHYTOPLANKTCN PCPULATICNS AT LOCUST POINT
- 10 Au;ust 1976 Station 2S I Statt n 27 htf en 28 hten 29 TAM Maan S.O. ( Mean S.O. Moan l S .O. I Mean IS.O.
BACILLARIOPHYCEAE (Clatoms) . Asterioratta formosa
,Cvetotetta sp.
Cyr-stecteur a sp. Fascitect s cetenersts 113 53 179 36 75 105 55 15 L spp. 600 43 621 155 233 32S 737 3:3 Velostre Istardica 788 200 680 285 540 756 385 293 Eersnutata 23 32 26 36 30 42 88 92 Naviculoid St=cht.rediscus birdaranus 1073 200 680 381 353 492 792 277 S. *erut s 45 21 17 24 44 0 5btotal 2640 0 2203 533 f231 1721 2101 785 CHLCROPHYCEAE (Gr sen Algae) Actines rum sp. Giructear+a sp. 90 63 51 24 11 15 Conta s+rumystt euta*um 83 53 2S 36 Q spp. 75 105 Cesmartum scp. Dictvcebertum sep. 8 11 Eudortna sp. 53 74 26 36 11 15 Go'enatna spp. M'e ostora cp. M u eotts sp. 293 11 11 15 Cmstis spp. 8 11 Pectastrum bicediata 45 0 68 0 23 32 11 15 L ductex 17 24
, & stry otex 1020 273 961 179 413 578 792 62 Scan =destrus sp.
S*autestrum paradoxum' Suttotal 1592 43S 1149 153 519 723 836 62 CFRYSOPHYCEAE (Yellow-Green Algae) Triberema so. I DINO PHYCEAE (Dinofla;ellates) Carattum hirundtr ella 45 0 43 13 23 32 99 46 ; Peridtetum sp. 30 0 . 34 0 i Subtetat 75 0 77 11 23 31 99 - f4YXCPHYCEAE I (Stue-Green Algas) e Ar.sbaers sotroides 210 84 145 203 75 105 121 da sp. 17 24 g gj 22 , Achsniccmenon sp. 3888 5618 $4728 22551 204C3 32771 82538 s 43 9 i Achst'ocansa sp. 363 95 170 240 240 336 627 169 Acrvar oth3cs sp. 8 11 11 15 Chrecccccus sp. 8 11 Costoscr seulm sp. 60 42 17 24 98 76 i Ocroot osemeria sp. Lyr-5va so. Micrecys:ts tr certa 68 32 77 36 15 21 77 77 l M. sp. 255 105 264 141 113 158 165 139 l 07cittatoria cpp. 1223 74 349 33 429 599 858 0 Su:: total 56072 3793 35707 32020 24303 34016 84557 4252 TOTAL 603a1 6229 39106 p3316 20076 ,36892 87003 7609 ,
- Cr.t.2 creserted as no. of whole organisms /l and computed from 2 vertical tows with a Wisconsin plankton ret (12 cm diameter, O.CSO mm mesh) at each sampling station.
S.D. = Star.dard Deviation
____,__m _ _ _.__ _ _ _ _ . . _ _ _ _. . ___ _ _ . _ . _ . . _ . . . . _ . . . _ . _ _ _. __ ._ _ _ . . -. s W TABLE 25 ANALYSIS CF PHYTCPLANKTON POPULATICf 4S AT LCCUST POINT
- 18 August 1976 yy M04n/
j Stetton S.D. I BACILLARICPHYCEAE l (Diatoms) 1 2 ]' A sterione' 'ormosa 1 3 Cveletetta q . 9 13 3 Cvmatopteurs sp. 13 41 ' FeWlaria cotonensis 252 245
- $ L spp. 854 480 Melostra lstandica 862 516 1
M . aranulata 26 29 f E tcutold 84 233 Stechanodtseus bierfeamus 1018 573 S. tenuts . 23 24 Subtota.1 3172 1346 , CHLCROPHYCCAE j (Green Algae) ,
~
i Ac*trastrum sp. 9 26 j Blevaclearta sp. 39 24 . - 4 Coe!astmm reticult*um 27 24 C. spp. 10 22 i Cosmarium spp, 10 18 i $ DictyopMetum spp. 3 5 ) Eudoctru so. , 17 17 ! Gotenkina spp. 3 6 l Microscora sp. 8 13 Vmeetta sp. 70 86 Oceystis spp. 17 34 Pedtastmm bir adiata 37 34 6 ductex 101 276 1 P. simolex 1C81 525 i
-ScenMesmus sp. 5 8 Staurastrum paradoxum 1 4 Subtotal 1435 482 ,
CHRYSOPHYCEAE t (Yellow-Green Alcae) J Tribonema sp* 1 2 DINO PHYCEAE (Dinoflagellates) 4 13 ; j Cer attum hirundiretta 53 29 Ps-idinium sp. 21 22
~
Subtotal 78 34 '
- MYXOPHYCEAE (Blue-Green Algae)
Arubaena solroides 164 61 ' A sp. 24 26 Aphanizomenon sp. 76563 30331 Anhanocacsa sp. 567 273 Achmothece sp. 23 26 Chroccoccus sp. 18 33 ! Coelescheruim sp. 59 70 t Gomonoschaarfa sp. 13 45 gg sp 31 1C2 Microsystis incerta 271 213 M. sp. 373 270 Csettlator fa spp. 1056 6G7 Subtotal 73161 30379 TOTAL 8334G 30418 Data presented as no. of whole organisms /t and computed frem 2 vertical tc.is with a Wisconsin plar kton nat (12 cm ciametar,0.000 mm mesh) at each samoting station. S.D. = Standard 03viation
, m.,%., .- ,w,.. _ ---m.-m.m,_. -
_ , _ , , - , ,,m,.--. --,,y-_-y, , . . _ _ _ . _ _ _ ,--,.-g-, - . . , . - . - - . , , _ .--w. _ , , 7,, %_ ,. - - p-._. e.7,_..yw -.--y- +
. - . - ~ . _ _ . .~ . - . . --. . . _ _ . _ _ . _ . . _ _. ~. _ . . I t poi)?)^eo psvourts e *c*g ,
*uont:0 Lw110wes trope se (ustw wwoGo*O *J73swenn u.rJ Cl) 2es uCJWTic utsdo338M I I* v ta m sec) Ico12se^ E wcs; painowco ovo 1/cwstuvose stown to *ou su pe:usssse wnc ,
I c =zt Er'095 mgg OOrtC crPL 04GSE 6C04 490PP W10 !. En OES U 096 de 036 56 C936 uso:cacsc .Parasyg SNVOZO.LO8d 9CC tOCP PSPL 0907 EEOL OSC9 CSOC $6CS lT303QnS e9E TOCE Pt9 OOCC PSE C4PE 46PC SEOF acs s3scavigioso 49 0F ELL DOE PL OCE 95L OGC *d8 "W O 096 94P 004 PL 06 C9 06 s~ust s!as^oosaw SF CC PL OL *cs eAc;.awr1 93 03 56 99 *cs ss+w3oeogo PCL PEE ESE OBL 93 CE * *cs 3 EP OC 09 SP 8 n313 6**11 an=sm oos,,o gg gg 'cs G.w3ouwway ELL POC OS OEC '9G 005 698 SO, *cs escc:ouwwsy EE 99LL 996 091 P4G OSLC 995 CSCC ads woseacziwwwcy l OC *O08 Y f EE 91 PL EC CE St EC 93 03L EC CE 8'M'NS *w**4wwv 4 I (estgy use p gg) , Ev30AHdoXAW L 06 BEL 0 09 PL 046 LEE 9t3 'll*6a*#*W u llkwEO (seart]sSo!)outc) 3Y20ANdONIO Ag 9949 9EP6 099S OP9 OCDS 971 GL94 l'30MnS BE OE seStw usesS umouwun ; OPL 04 OG 991 Cgg unmassra wr asesnegg 99' '
*cs susa:cweswog PL OL EC CE
*cd* 's CE 96 EC CE 'D'MdMOD 3 O' 05 " N' N ' ** ' d 50***P'w*T 95C- 099C 934 OP9C 969 OGEC LEE < GLOS h*ld*l* 9 S? t9 99 OF PL OL EC CLL "*l W 9 06 P9 998 OEL 99 001 CD 06 # 3'l" @
- N3 N EE 96 GE DE PL OC EC CE 'cs 3 6asAcoo COP 969 996 OP9 FCE OBOL S6 CSSL *cs e13oem gg og *cm ' .n ewl;awsoW BE 05
- C 8 \ ' * * * **d
- L1
*cs unew. rm M*A **cs a,.ee r. sow: uvo gg o, *cs s.wswepo EC 05 " d' ' N* L 63N3 pg Og *cs w.wswsoo :
93 OP 0 OP OSL CLg *cs v).as ,3scasoo ! EE 9P P9 09 BE OP 0 g, *cs w.sasvisoo EE ELL 0 096 EP CC EC Cg *c3 v.eseasolo GE OE Cg SP 8*wl654Luol siscasaascto CE ELE Opl OOS B6
- OCC SEL cts *d8 5 d**4anula O Og # cs sn.a.posagwy (esSt y wo*JC) 2Y20AHdOH 'r1HO Ogg 99998 566C OP9CE tos 00C98 Ort 91P95 1'303AnS 93 OE 'c1 sspea^s O 99 99 OEL EP OS EC 9PE sinwei E' CDP 9P03 095 000C GCE 056L 495 Sl6C 8 N #d* W K m;ripc m ce45 EE 95 O OP 'cs swassaan6sd EE OL *c1 B 6 warelN !
06cina^eN 69CL 3G89 PEE 0994 BOC OE99 89CE Et99 saeweis: W f ECE E69 FF9
- 059 EP C4? C9 096 van gr.wess asisotew EC CE *cs awaswo
*cs swe%c.uc.o ,
9605 9GE9 9LCL 09C9 00C 0919 9001 0900L ' des T , 695 9696 9S4 09PE OPL 0945 SCS ESSE sisw6se;t.a 3 v s m o ,,g > EE 9L 95 OP 0 OF S6 99 *cs rite 2ois/o , S6 99 *cs e-sesioovisse-) , St EC EP OS escwsca allswoweasy - (swo2etc) 3V33AHdot tfv'17 toys i
'O'S '
ucen i *c s urow 'U s ur ew i
*c c uaan .
p woiar3C 6 9 wonrag g r wo 2r2S i a wol3825 946L aeqweados t*t
. 1NIOd _LSnOO7 1V SNOI1V~lndOd NO1MNCdO1AHd 30 SISAWNV 93 378V1 I
L6 J
92 TAB L E 26 ANALYSIS OF PHYTOPLANKTON POPULATIONS AT LOCUST POINT * , 14 Septem'C er 1976 MLLQn O I S *a t',oe 12 h ?*M'*e 9 *l 9 923 tton T4
- u.ga n Medan S.D. Mec.n S.O. 5.0. I Moan i3.0.
BAC!!.t ARICPHYCEAE (Otatoms)
- Astertonstta fermosa 20 28 9 13 Coscirocisct.a so.
Cf:Lo:etta so. 15 21 140 ' 196 12 17 60 13 Fesq u. aria cm'easesis 177C 168 22CO 672 1860 151 2117 465 f.: spp. 5250 882 G44O 28 6960 403 5372 95 Gomoane,e a so. Gveesme=a sp. Malostre eramt ata . 615 147 1100 140 684 151 748 262 M. istaactea 6315 105 8900 252 6528 907 6154 428 Navt ev!oid 20 28 MereM e so. Ptescosie=a so. S*eca smeiseus bee a.esaus 1500 252 3120 280 1656 403' 1369 84
.S., teevts 45 21 140 20 60 17 60 13 Sv eeen sp.
SWtot.a t 15510 1554 25100 1540 17760 134 15889 127 CHLCRCPHYCEAE I (Green Algae) Ar*is*rocesn ss sp. Rimveteneta sp. 285 21 380 140 216 34 213 CO Ctostgem:41s torv-t s sim a 15 21 Ctestectsm sp. 195 21 120 0 132 118 60 83 Coe t astra rm sp. 60 42 40 0 60 50 17 24 Cogio s or s,* ism sp. 20 28 24 34 Co sre c at tm sp. Caucie ea*e.sp.
- Goteameen sp. -
G<vaceo s = e =ei a so. . 40 56 15 21 j Kirem-veie't a so. t.aoece,t-ef a sp. Mt ernet t-hm sp. 15 21 Mtr es** s sp. 600 252 420 140 552 202 765 333 Coevsti s. sp. 40 0 9 13 i P naa.m bienctete 90 42 60' 28 41 67 102 O Pa cuo tsa 75 21 140 84 96 34 111 ,100 ; L simel,*
- 3375 1365 3860 588 3264 202 3392 489 l Scenee,= eus cea-Rut ums l
L cuac-t: eses SO 29 24 34 34 0 ' L spp. ,
. l Sommeroevstis so.
Staursstem tmeer' m 60 42 60 84 60 17 34 0 i LNetown green algae 15 21 40 56 34 48 l St.c, total 4804 1680 1280 168 4476 252 4771 675 CINCPHYCEAE i
- I (D(rct".agettates)
Caes*1m N e'r@+'i n 135 147 120 56 72 0 128 36 ! MY:KCPHYCEAE (Sh.a-Green At;ss) Anadaeen so(mies, 15 21 24 0 17 O A2 spp. 15 21 20 28 Aom art rore ace 9 sp. 405 21 500 196 156 50 77 13 h ocsess sp. 60 0 140 28 168 101 102 05 AC P'ar'ete= e? sp. 20 28 CW:00:vs ttmaatteus Q , sp. 20 28 24 0 9 13 Gle-et*,cs so. Lyaebys sp. 45 21 Mtemeyvis ice.ats 60 0 40 56 72 34 17 24 Ma so. 180 168 180' 84 180 17 85 71 Cecitis* aa so. 1875 315 0840 2240 2004 252 2287 917 Setotal 2655 105 4750 2352 2628 118 2594 724 PROTC2 CANS Saceae, cmtozoan 720 336 990* 462 684 151 697 I . 3 J3 70 tat 23820 3612 3S250 4242 2*620 151 24079 l 124a
- Qata pres,etac As no. of wno.a organisms /t arc computed arom 2 verticst tows witri a Wiscocain ptarmton net (12 cm atameter. 0.090 min mesn) at eacn sarnpting station. ;
S.C . = Starcard Ceviatton j
93 TASLE 2S ANALYSIS OF PHYTOPLANKTON POPULATIONS AT LOCUST POINT
- 14 September 1976 Station te Station 26J Station 27 S tation 28 !
Mean S.O. Me.m S .O. Mean S.O. Mean :S.O. GACIL.LAMICPHYCEAE (Olatoms)
. Astertonetta formosa 24 34 to O 34 48 30 42 -
Coscanociscus so. G 13 Cy:Lo:atta sp. 12 17 34 48 53 11 Frecitarea crortaeasts 1990 319 2068 504 1615 238 1S90 378 P,, spp. 6468 2S2 4448 896 4G90 154 5040 42 Goe-oWema sp. 9 13 Gyros (eraa sp. Metsstra crerutain 732 454 4C4 202 S3S 95 465 84 M. fsta-etca 7440 107S 5072 963 5602 417 6083 641 Navf eu t o f ej 8 11 Nttre"fa 35. Pt,uro,tc* e so. Steemanoctscus bledvaron 1716 118 1096 11 14C3 725 1313 137 S, tanuts 108 50 48 22 51 O 88 S3 S m ore sp. Sutatotal 18480 2010 1317S 2117 14342 1032 14642 11J1 CHl.CRCPHYCEAE (Green Algae) AnMstrecegn*us sp. Bimuclearta sp. 144 134 216 34 $23 48 263 11 Closterte:> sis ton-issima Closterium so. 84 50 8 11 26 36 8 11 Coataste so. 48 O to 22 34 0 45 42 Costoso***rkm sp. 15 21 . Comra ariur** sp. 8 11 17 24 CrucMeale sp. Golanktera sp. 12 17 Cem-ee*cae**in sp. Ktece==rietta so. 8 11 . Leeera.+r-in sp. Meersetta..in sp.. 8 11 Muccotta sp. 402 67 952 213 451 132 270 105 Coevstis so. *9 22 8 11 Persiastam biracie*um. 72 0 24 11 43 36 8 11 P a ch.ot,w 48 0 40 34 94 13 120 63 L eir-stew . 3972 84 2E72 885 2746 84 304: '273 Sc anece smus eva Put s*us L cuade'enr:n 12 17 24 34 8 11 L spp. n SN*evecevstis sp. Staurss*rurm o n-
- dS wt m 56 11 1S O u*rown green algae 36 50 8 11 Subtotal 4860 17 4240 1098 3734 127 3821 570 OtNCPHYCCAE (Dinottagallates)
Cerst!um Neucet-atta 156 17 136 11 136 71 105 84 MYXCPHYCEAZ * (Blue-Gr een Algae) Anabaena seiroters . 144 112 9 13 23 32 Aa spp. 7S 83 17 24 Acaint rer==<v>a so. 216 23S 1768 1154 128 13 180 21 Aomweness so. 60 17 144 67 43 35 158 158 Aonanotroce sp. Chrooeoccus lie maticus Qi, sp. . O Glo oth.e, sp. L.yroys so. Mf eroevstis tec ren 12 17 2 45 34 48 38 11 6 so. 204 17 320 90 94 108 113 11 Oscittatoria sp. 2496 73 9 2184 78 1581 143 1343 263 Su> total 2988 991 46a3 1239 1906 21 1855 469 PROTCCCANS Saccata crotozoan 792 0 496 259 612 167 525 84 TOTAt. 27276 3007 22731 2247 20730 1133 2Oge;g 1333
- Qata pensan>a as no. of wnote orgamsmn/t and enrr.puted from 2 vertical tnws with a Wiscor stn placaton not (12 cm diameter. O.C30rrm mesn) at each sampling stattor*, -
- S.O. = Stancaco Oevtetton n.- .. , . - --< , -. ---
94 - TABLE 26 i ANALYSIS OF PHYTOPLANKTON POPULATIONS AT LOCUST POINT
- 14 Septem'Cer- 1976 TM Stattoa 29 }Mean/
Mern S.C. I station S O*, BACIL.L ARICPHYCEAE (Otatoms) Astertongtt; %osa 36 17 19 17 Coscanootset.a sp7 6 19 Cyclotatta sp. 24 34 40 37 Fractleeta cmteasemis 1 *A4 202 1906 525 L spp. 6756 1125 6588 1754 . Gomomon,ma so. 1 3 - Gymsloma sp. 2 6 Malostra cranutata 480 67 606 22S M. Istandtca 6136 2237 Navicutoid 2 6 Nit 2chta sp. 1 4 Pleurostema sp. 4 12 Stecesrodiscus tgh d.-seus 756 890 1912 915 SS 61 L tenuis 2 6 Syn. dea sp. , Subtota g 9635 2100 17363 4795 CHLCRCPHYCEAE (Green A8;ae) Ar*lstrodesmus sp. 2 6' Bfnuetearea sp. 226 118 301 116 Closteeteosis loetssima 6 13
, Closteatum sp. 12 17 75 64 4 ' Coetastm so. 39 19 12 17 20 32 j Coelosonagefum so. 4 Cosm etum sp. '9 Cruc(**nia so. 2 6 Goleektaen sp. 4 11 Gorarw osea,ef e sp. 3 11 KlecMaef alt a so. 2 5 Laae+ ,mt e so. 2 6
, ha et(ahm sp. 3 7 Muc.ott a sp. 600 34 704 339 Occystts so. 12 13 Pediastrum bleed (attm 30 17 66- 34 Pa con t= = 96 . O 81 39 L cimolew . 3216 638 3503 591 Scenadernus craaeutatus 2 6 L ouecricauda 15 18 L spp. - 3 7 So mmgeewstis sp.
Staurastrum eergeow.y., 12 17 46 43 Lhknown green algae 12 17 13 15 Subtotal 4224 925 4907 1017 O!NCPHYCEAE (01nortagettstas)
) Ceeatitm hieundf aatta 84 17 131 46 MYXCPHYCEAe.
(Blus-Green Algae) Anabeena solmides 30 43 Aa 'spp. 24 34 17 21 Armaatromanon so. 96 134 674 1168 Aoma.90cacsa sp. 72 67 167 113 Ao%9aottaen so. 3 7 Chroocaccus t tere.tf eus 6 14 Ca so. 38 74 Glocote=en sp. 7 19 L W ev9 sp. 7 15 Micmeystis incee. 1CX3 184 Ma so. 120 tot 175 90 Csettiatoris so. 1740 655 2419 830 Statotag 2052 673 3848 1956 PRCTCCCANS Saccate pretorcan 816 0 7S3 221 TOTAL 1681 2 4413 27032 73*J2
- Data presantec as no. or wnote organtams/ L ano comou:aa fro'm 2 vErtiSit tows with a Wisconsin plankton net (12 cm clameter,0.030mm mesh) at each campling station.
S.O. = Stanoord Osweation e v- - *,r.- w.--w 7-w- m-, i
.. _ - .. - - . _ _ = _ - - - - -- -
95 - 4 I h i TABLE 27 ANAL 9 SIS OI: PHYTCALANKTON PCPULATIONS AT LCCUST POINT
- 19 Octcber 1976 Tm __Statien 1 ! Statten Statien 6 St a t t en 8 j
i uean s.o. suo.cn s.o. Mean l s.o. Mean is.c. i BACILLAR!CPHYCEAE
, (Clatoms) l Aster foretta fermosa 196 137 24C O 120 0 325 0
- Asterionella graciti'.ma .
- Cyclotalta sp. 49 69 60 84 120 56 135 105
; Cymatcoleura sp. 40 56
. Cymi.mita sp. 20 28 j ; Fracilaria croterinsis 2058 1921 620 28 600 280 96C 336 j.F.spp. 2548 2195 2620 168 2960 224 395C 882 j Gyrec!Oma sp.
8 Mstesira gra.v:tata 98 137 40 56 3C 42
.g. Islandica 3430 0 13160 15680 14140 16212 4250 42
,Pteurosicma sp. OC 42 l .Stechared!scus bindscanus 41111 9124 11900 13524 11780 12796 20055 5481 i ,1. tenuis 40 0 30 42
) ' Synadra sp. 45 63 l Sterf roll a . 40 56 i Tab?ttaria sp. . 98 137 45 63 i Subtotal 52356 13CS9 28680 2240 29820 3948 29875 6510 4 1 CINCPHYCEAE - (Dinoflagettatss) Carattum hirundinella 49 69 140 196 MYXCPHYCTAE i (Blue-Green Algae) 2 Arabnana sof ro!das
& sp.
A9anizemenon ep. 40 56 504 6CO 525 - 735 A=5cnceassa sp. 140 196 60 84 Ae=mthece sp. 49 69 Chroococcus timretic g sp , 49 69 20 28 Microcystis ir.eseta 20 28 60 84 M. sp. . 165 147 Oseittateria sp. 28420 686 11380 31C0 15300 4004 7290 1554 Subtors; p 28518 686 11580 2084 16640 2520 7980 2436 1 1 l l l
96
- TABLE 27 CCN'T.
ANAL 9 SIS Cf: Pt4YTCPLANKTCN FCPUI ATIONS AT LCCUST FCINT* 19 Octctor 197S Tm 9tation 1 I str. tion 3** Stacien 6** I statten d** i iAean S.D. ! Mean S.O. Mean S .C. f Mean S.O. CHLORCPHYCEAE (Green Algae)
, Actin 13frum sp. 20 28 105 63 Ankictrodasmus sp. . 20 28 Blnuclearia sp. 2009 69 960 1344 2280 784 1395 147 980 1372 45 63 ' Ctestortcosts lomissima C osterium sp. 980 137 180 28 120 0 18C 126 Cos tastrum sp. 196 0 20 28 40 56 30 42 Coalesphasetum sp. 147 69 60 28 20 28 3C 42 Err-m'otta bornaemiensis 60 84 Goterwinia sp. 20 28 60 28 45 21 Goe chcema sp.
kirchn?rtetta (cbesa) 40 56 MYcractinium sp. 294 274 60 84 100 28 45 63 Munotta cp. 32242 68S 15040 1624 15320 2523 9630 2268 Ocevutis sp. 49 63 160 56 Pedlastrum bircdiata 196 274 20 28 240 210 P. cuolox 1029 4CO 1040 224 1440 ' 56 900 462 Pedtastrum simolex 4459 63 2180 364 2340 980 1530 163 Plankta..oteria (gelatic.osa)
. Scan *canmus acct.mirnta 20 28 L _quedricauda 245 69 ,20 28 120 56 120 42 E sp.
40 56 45 63 Setenastru.m (Westii) 40 56 L (bibrainum) 28 12C 84 Scheroevst!s sp. 20 28 20 Steurastn m paradwum 147 69 60 28 40 0 L sp. htr astrum sp. 49 69 42047 823 20720 1120 22180 4004 14520 2940 Sut otal TOTA L 122966 14646 61120 6048 68640 5432 52375 1168G Cata presented as currbar of whola organisms /l and computed from 2 vertical tows with a Wiscorsin pla& ton net (12 cm diameter, 0.030 mm mesh) at each' sampling i station. ! S.D. = Standard Devisition
** These samples were clluted 1:1 to allow accurate counting. ;
1 l l l
97 TABLE 27 ANALYSIS CF PHYTCPt.ANMTCN PCPULATICNS AT LCCUST POINT
- 19 Octr.brir 197G Tm Statinn 12** I Statten 13 Sta tien 14 station 18 Mean S.O. I Mm S.O. Mean S.O. Mean 'S.0.
BACILLAR!CPHYCEAE (Diatoms) l As'.er-(o etta fcen esa 72 3 310 62 166 77 268 O l Asterionella gractiltma Cyc!cte11a sp. 178 42 45 63 55 0 81 37 _Cymatcoteura sp.
, Cymbella sp.
Fragtlaria croterensis 1035 105 708 526 370 991 39 151
. F cpp. 5731 863 4957 186 4C94 1394 3057 0 i Gyror:lgma ;p. 45 63 56 78
- Malostra gear u?ata 89 125 139 38
' S ._istend! a 4397 1588 2916 3352 2655 155 346C 413 Pleu-osicma sp. ' Stscheroefscus binderanus 38248 1946 36374 3717 24974 9332 2655C 3380 Q . tenuis 425 182 28 39 '_Syrn rs sp. Surire t ta Tabat teria sp. 45 63 27 38 Subtotal 44355 3866 45489 8558 32693 11152 33819 4019 D:NCPHYCEAE - -(DincGcgsitates) Cer etium hiruneinella 28 39 40 56 MYXCPHYCEAE (Blus-Green Algas) Mibsana solreidas 70 97 89 125 & sp. 176 1 43 89 125 108 75 Ae5amirem-non so. 3740 495 45 63 249 349 169C , 113 Ae53rocansa sp. 111 155 133 186 28 39 A5,=-Mh=co sp. Chreece cus timr.itle 133 186 & ?p , 26 39 Microevstis freerta 104 14C 55 0 54 75 M. sp. , 35 49 45 63 28 39 28 39 CAcittatoria sp. 24520 851 21800 ' 3398 7855 3175 10271 1464 Subtotal g,. 28757 1935 22394 3846 8215 3602 12179 1805 ea e s eh4m.- *9 h
t 98 i 1 1 I i TAGLE py CCN'T. f , ANALYSIS CF PHYTCPLANKTCN i:CPULATIONS AT LCCUST FO!NT* 19 Ceto4cr 1976 TW statien 12 " i sentien 13 statien 14 i Sterion 18 Mean 3.0. I Mean i S.C. Mean S .D. I Moan S.D. l CHLORCPHYC:IAE * (Green Algas) , l Actinastrum sp. . 1111 97 487 133 222 155 134 188 - Ae'<istrecesmos sp. . j _Ginucleart s so. 4050 422 27C0 l 576 802 272 2253 75 ; 4
. .Cteste-icosts le~;issima I i ; Cissterium sp. 924 263 532 123 222 78 134 38
) j _CesIastrum sp. 37 52 178 123 81 113 r Coetose' aarium sp. 74 104 89 0 28 39 Er-amita terr
- smie..s:s 28 39
- ; Colan;<in(a sp. 70 98 45 63 28 39 t
Gomemoama sp. ! Kirchneef st!a (cbesa) u.tcrectintum sp. 266 0 139 39 108 151 Muc?otia sp. 267G9 3920 21107 1920 11782 620 17539 3380 Oceyotis sp. 798 1117 178 123 28 39 28 39 Peciastrum birediata 402 367 443 310 221 232 258 0
.P. duolex 2050 1114 1107 310 1024 503 118C 150 Ediastrum simotex 3818 2040 3762 310 2296 1 04 _ 1985 000 Pinn'<tes= ear ia (gsiat'riosa) 104 14S
- Serscesn us accuminata
- L quadricat da 314 337 S sp. 28 39 Selenastrum (Westf() 248 109 133 186 81 37 j - 2S (bibrainum)
Senaroevstis sp.
- 28 39 Staurastrum paradoxum L so. 45 63 Tetrastrum sp. -
r Subtotal 40769 10213 30990 4240 16764 3C22 23903 4627 TOTAL ' 113881 16015 98873 16644 57700 17815- 69941 10507 i i Cata preserted as number of whole ceganisms/l and computed from 2 vertical tows with a Wisconsin plankton net,(12 cm diameter, 0.000 mm mesh) at each'samplirg station. J
; S.D. = Standard Ceviation
** These sbmples were diluted 1:1 to a!!cw accurate counting. ,
l l 2 i I i ) 1 l
I l 99 i l l l 1 I I TASLE 27 ANAL. SIS Cf PHYTCPLANKTCN POPULAT GNS AT LOCUST PCINT* 19 Ocicber 1970 TM St'II ' 25 ' S?" TIC" 27 ! S'" tic' 2S " St' t I O" 29 ' Mean S.O. I v ean S .O . 6 Mean S.D. Moctn S.D. GACILLARIOPHYCEAE
- (Ciatoms)
! Aster (onetta formosa 595 119 519 83 723 202 507 55 ! Asterionella grcctlltma Cycioutta sp. 34 0 51 0 30 55 , Cy notColet.ra sp. * - Cymbetta sp. I Fraqi!cria erotenens(s 646 143 51C 286 893 107 507 491 6 F. spp. 3927 881 3463 571 3392 250 4134 109 f Gyroslema s,3 ' Melosira granulata 34 0 51 71 143 85 78 109 'M. Estand!ca 3298 48 3545 1535 3927 296 2496 655 Pteure sic ~n sp. Steensroc! cus birdecarus 16320 48 19329 1285 21573 2284 21216 323 . S. tenuf s 2S 38 78 o Synedra sp. 17 24 SveirM ! n Tabattar ia sp. 51 71 Sub ctal 24922 1C47 27472 2380 30834 2451 28155 2297 OtNOPHYCEAE - (Dinonagettates) Caratium hirund!netta 34 0 26 38 2S 28 39 55 MYXCPHYCEAE (Olus-Genn Algne) Ansbsans sciroides T- 55
,A_, sp. 53 95 Achanizemoren sp. 1360 333 867 143 1377 571 2'/02 12'1 0 3 5enoecesa sp. 68 93 M V.J Aobscoth ace so.
Chrocceccus timretic 17 24 S Cp CS 38 Microcy/stis incerta 34 48 78 109 34 0 195 55 d SP. _ 4454 333 6350 464 4998 357 11778 1966 Osettlatoria sp. Subtorst g,. 6035 71 7293 214 6452 1035 14391 819 e e e me em.p , m. =
I sco ! 1 ( l A TABLE 27 CCMT. ANALYSIS OF PHYTOPLANKTCN FOPUt_ATIONS AT LCCUST POINT
- i 19 October 1976 1
] Tm Sta t t en 26** I c:htten 27"" l statten 28**I smefen 29** Mean G.0. i Mean i S.O. Mean i S . D . ! Mean S.O. y 'CHLORCPHYCEAE
, (Green Algae)
' _A_ ctinest' rum sp. 34 48 26 36 2d 36
' An'<lr.trocesmuc sp. .
f Bir.uclearta sp. 1241 547 1224 571 842 36 1794 546
; Clostericosts torcissima i Closterium sp. 1C2 0 281 179 230 107 390 0 l Coelestrum sp. 51 .24 51 0 51 0 117 55
, ! Ceglese5merNm so 17 24 51 0 153 0 39 55
. ' Fratr aite be.aahemtensis 34 48 Golankinin sp.
Gomc5cema sp. 26 38 Kirchn=rietta (cbasa) M!cractiniern sp. 34 48 51 71' 78 109 Mugeetta sp. 7633 881 12240 1499 11781 286 Coevstis sp, i Pediastrum b! radiata 408 95 533 393 485 36 819 164 a
$ ductax 476 143 816 71 893 36 1C53 55 Pedtastrum simolox 1156 476 1428 500 1836 214 1638 1C9 Planktoscaecia (galatinosa)
. Scenedesmus accuminata L quadr 6ecuta 51 24 78 0
- E sp. 17 24
- Setanastru*n ONestil) 17 24 77 107 78 0 L (btbrainum)
! Scheerocystis sp. i Ste':rast- um carahum 17 24 51 0 51 71 L cp. Tetrastrum sp.
. Subtotal 11298 857 16703 2392 16499 321 6084 764
- TOTAL 42279 1833 51493 SC22 53610 3344 48669 3826 Data presented as numbor* of whole ceganisms/l and computed frem 2 vertical tows with a V<loconsin plankton net (12 cm diam a. 0.C80 mm mesh) at each sampling station. .
S.D. = Standard Deviatton
** 'These a pies were diluted 1:1 to allow accurate counting. ,
e I i g
.w p- .-9.- +------.-=p--y--,r wgem -t,s- ,,r------..---97 - - - , e- , , - - ,w -~m-i--.w---s- - - , -m+%-wpwi+ seyrwe.gi.yys-
101 i i i . i ~ t i TABLE 27 ANALYSIS CF PHYTCPt ANKTON POPULATIONS AT LOCUST POINT
- 19 Oct:ber 1976 Mean/
r Tm station S.D. BACILLARIOPHYCSE J (Otatoms) Asterionella forreosa 337 204 Astertonelld gracttttma Cyclota' ta sp.
. 71 '50 Cymatopleura sp.
, Cymbella sp. i Fragilaria crotersosts 787 447 F. spp. 3737 942 l GyresIqma sp. ! Matostra r;ranulata 59 51 i M. Es tandica 5140 4022 ! Meurostoma sp. j Stephanodiscus binderanus , 24119 9825 4 S. tenuis 52 120 3 _ Synedra sp. 5 14 Suriretts
; Tabettaria sp. .
22 37 Subtotal 34023 8589 DINOPHYCCAC
- i (Dinoflagellates)
! Cerattum hirundineita 32 38 i
i MYXOPHYCEAE (Elas-Green Algas) Anabaena solreides 17 32
& sp. 37 co
< Aphanfrom7 eon sp. IC63 1112 ' Anhanoenosa sp. 52 55 Aphanothere 'sp. 4 14 Chroccoccuo timnatic 13 38 l
, g sp , 10 34 17 3S I M!crecystis incerta I M. sp. "
44 6S Sc{ttatoria sp. 12873 8011 . Subtorsi . ,n- 14203 8257 i )
' * ~* +<~. . n., . . .,_.
7 ~r- r- -+ , ,- g-. g w ,-%--- y y.--. - m,y- -- pf%_myw Nm=T+&'s*-r '=W-me--+"w- +- - --e' -------mW eM *
- r- ww Mw -- w
= _ - . . . .- _. -
l l 102 . 1 TABLE 27 CO N'T. ANALYSIS Cf: PHWCPf ANKTCN PCPUt AT!CNS AT LCCUST PCINT* 19 Cetober 1976 v.ean/ Tm Statton S.O. i CH LCPCPHYCEAE , (Green Algse) Actinast' rum sp. 180 325 l 6
. Ankistrodesmus sp. . 2 I Bfnuclearia sp. 1796 943 ; Clostericosis !cruissima 85 282 Closte -tum sp. 35G 304 Costastrum sp. 71 62
- Ceetoschaarium sp. 59 49 Errarsita bornesmiensis 10 20 Golenkinta sp. 22 27 Gomehoema sp. 2 8 j
4 12 l Kirchneriella (cbssa) 99 95
! . *Micractinium sp.
120 8613 ) Muceotia sp. 103 228 l' Ocevst!s sp. Perfia.=trum biradiats 337 229 l .P. ductox 1084 380 P7diastrum simotex 23E9 1C65 Plarf<tecoaer ta (gstatinosa) O 30
. Scenadesmus- accumir.nta 2 .6 79 100
~S. cuadr(cauda 4 0 a
#E* 60 73 Selenastrum (Westii) 3 12 S (bibralnum) 10
, Schaerocystis sp.
31 ## Staurastrum paradoxum
# '3
-S. sp. 4 14 Tetrastrum sp.
21872 110W Subtotal i TOTAL 70129 26869
- Cata presanted as number of vMots crsanisms/l and computed frem 2 vertical tows with a Wiscensin plankten net (12 cm diamoter, 0.080 mm mesh) at each sampling station.
S.D. = Standard Ceviat:cn
** These san cles were diluted 1:1 to allow accurate c:unting.
.103 TABLE 28 ANALYSIS Cl- MHYlCut.Af4<1CN PCPULATICNS AT LCCU:mi ININ1 *
. 2 November 1976 7 Station 1 1 Stctinn 1 % tim 6 i 9'oSen 8 Mean 'S.O. Mean i s.o. Mean i S.O. I Mccn S.O.
BACILL.ARICPHYCEAE (Olatcms) Astertonella fer -esa 1475 496 539 55 567 244 038 155 Cyc!:tella sp. 17 24 14 20 g(gicmerata) Fra;ttneta creter ensis 1357 330 568 129 957 542 714 167 F. spp. 4543 248 1604 722 1932 550 2125 214 Elosien crenulata M. is tar.::nca 590 0 171 97 211 136 213 202 Steemmedtscus binderaraus 4956 909 2154 849 2191 461 2117 179
& tenu:s 29 16 Syr+cra sp.
Tadetteria sp. 148 207 104 50 '71 60 68 24 Subtotal 13069 2189 5185 1785 5942 1403 5874 250 CHLCRCPHYCEAE (Gr een. Algra) Actinistrum sp. , Araxistrocesmus so, e! nuclear ta sp. 826 83 722 558 734 149 451 179 Ctestertt.m sp. 443 207 131 41 95 54 94 12 Cc a ls. strum sp. Ccelese:naeritm sp. 59 83 10 14 9 12 Dictyos=r mertum sp. Micrcettntum sp. 26 36 9 12
,vgeotta so. 12007 124 7295 931 11635 3468 7616 1235 Cecystis sp. 9 12 PectastrNm blenciata 148 207 63 32 184 18 77 60 P. cuo t u 177 83 73 18 99 21 34 0
[ simolex P!ar,xtosenaerta so. 620 413 29 16 154 28 216 39 94 131 S:neerceyrtis sp. Staur a rsm crescoxcru 39 30 24 6 9 12 Lubtotat , 14278 661 8394 1493 12951 3821 U390 1535 DiNCPHYCEAE
-(Olecriagellates)
Ceratium ntr.:ndteella 10 14 Subtotal 10 14 MYXCP:-4YCEM (Blue-Geeen , Algae) Ar.aomens soiretees A. SP. Achst !zemenon co. 118 165 140 29 52 34 9 12 Mir recyst 4s in: arts 10 13 M. sp. 5ctllateria 8644 289 497 471 2977 1321 910 298 Sob: ctal 8762 124 636 442 3038 1274 913 309 FRCTCZCA Saccate cretorean 59 83 19 2 , St.Ote tal 59 83 19 2 l l ! TOTAL ,36167 1569 14243 2652 21931 G497 15131 2C94 Data cessented as r*c. of whole cr gentsmsfl and com;:vted tecm 2 vertical tows with a Wisc0nsin planxten net (ip em diameter, 0.0G0 mm rresh) at each samptlrag sataien. S.O. = Standard Ceviation a Serr.p's r o. 2 cituted 1:1 to allow accur ste countir'g. 6 S0th samp!ss clluted 1:1 to allow accurate countirig. m w ,% e. -.- +
101 TAELE 28 - *
. ANALYSIS CF PHYTCPL.AtMTCtJ :CPUL.AT (CNS AT LCCUS1 PCIN T' 2 November 107G
.g. _ Station 12 i %! Ion 13 ctatten 14 l S!m 18 I mean is.o. i;eem s.o. Mean i S .o . I u.can s.o.
GACILLARICPHYCEAE (Cictoms) , Asterforetta fermesa 1829 743 645 iO3 888 34 960 0 Cyctocetta sp. 59 82 24 34 30 42 g glomersta) Frac;ttarta cretcree:is - 1209 620 570 1C8 384 0 645 63 L spp. 4572 2850 2100 252 2484 17 2400 714 Melostra granulatn 30 41 60 84 M. is tardica 1033 503 240 84 240 101 180 210 Esorarociscus birdarar us 5841 3055 1200 756 1834 622 1755 651 S. ter.u t s Synscr a sp. Tc.ettaria sp. 325 28 255 63 120 0 285 63 Sustetal 14898 8C54 5160 798 6024 605 6270 1638 CH LCRCPHYCEAE (Green . Algas) A:ttnistrum sp. 15 21 Ar;<tstrecesmus sp. 30 41
~
8tnuclearia s{ 1809 1404 345 63 660 50 450 00 Cicstertem sp. 325 207 150 42 .192 0 210 0 Coetastrum sp. 59 58 - Ccelossona.er-iten sp. , 30 41 24 O Dictyosecagetum so. Micractant: m sp. 89 41 45 63 Mugeott a sp. 24957 17594 6810 546 8439 484 7935 1743 Cocys:ts sp. 12 17 Pedir. strum b! radiata 148 41 90 126 60 17 120 0 P. cuolex 207 28 90 126 60 50 165 63 E simo t e.x 443 372 90 42 15S 17 105 63 Manktos:naeria sp. S:naarecystis sp. 36 50 15 21 Staurstrum =aradoxum 30 41 15 21 Suttotal 20143 19576 7590 504 9536 353 90*A 1932 DNCpHYCEAE (Dinoflagsliates) Carattum htruedire!!a 12 17 Subtstal 12 17 MYXCPHYCEAE' (9tve-Green Algae) - Anebsera sciroides 177 248 6 sp. 30 41 i Achanizomaren so. 472 496 75 105 36 50 30 42 Micrecystis incerta 30 41 15 21 12 17 M. sp. 5 12 17 Osctllatoria 5694 4253 1155 903 636 151 1125 357 Suttotal 6402 4915 1245 777 696 101 1155 399 i PROTOZCA I l Saccate proteroan 1 St.btotal 1 l l TOTAL 49442 02514 13995 1071 16485 168 16435 3959 l Data pr esented as ro. of Mv31o organist-S/L cnd cer~uted fecm 2 vertical tows with a Wisconsin plankton r se (12 cm diameter, 0.C30 mm rresh) at each sampling satalon. S.C. = Sta .dar d Deviction a Samplo no. 2 diluted 1:1 to allow accurats c unting. 6 Soth samp!ss cituted 1:1 to al!cw acct:r-ste counting.
105
~
TABLE 28 ANALYSIS OF PHYTCPLANK7 CN PCTsut_AllCNS AT LCCUS7 120 !N T ' 2 November 1976 7% Statien 2ca i Gtat ien 27a l titatico 23a i m g re, 29 Mecn 1S.D. ! t,1cen S.O. Mean i S.O. .v can (S.O. GACILLAR!OPHYCEAE (Olatoms) . Aster (enella formosa 961 550 1140 3CO 731 119 1013 888 Cyctotella sp. 77 C3 17 24 g(glomerata) 20 28 Fesgtlarta cectenensis 595 24 550 154 459 24 878 19 F. spp. 1947 36 1810 350 4369 738 3375 863 Mslostra grarulata M. istanctea 425 1G7 260 28 204 38 176 57 5echenodiscus binderanus 2508 83 2000 952 5270 619 4307 2C8 S. tenuts 9 12 Syrsdra sp. 20 28 Tacellaria sp. 111 83 '150 14 17 224 122 19 Subtetal 6630 833 5950 798 11067 1499 9869 1909 CHLCROPHYCEAC (Gr een . Algae) Actinis'trum sp. 80 112 . An,< tote ,desmus sp. Binuclearta sp. .N 12 440 168 935 262 689 359 Closterit.m sp. i/0 0 330 42 255 71 243 38 Coe tastr't.m sp. Ccelosschaech m sp. Otetyosenaerium sp. 20 28 Micracttntum sp. 17 24 54 76 Mugeotta sp. 10523 1235 7390 1694 9384 809 9558 1210 Cocystis sp. Pectastrum bicadiata 85 71 60 28 187 119 173 132 L duolex 102 93 102 48 81 O & simotex 119 00 90 70 323 24 419 l 19 Planktosenseria sp. 30 42 Sonaercevttas sp. Staurst rum caradoxum 20 28 Subtotal 11603 1273 8460 1372 11203 1214 11219 17G6 DlNOPHYCEAE (Dinoflagellates) Ceratium ,hirundinella Suotetal MYXCPHYCEAE' (Blue--Green , Algae) Anabaena spiroides 14 19 A. sp. 17 24 Achanizemeng sp. 145 83 CO 28 85 71 81 113 Microcystis inenrta M. sp. 17 24 Scittatoria 2699 857 1040 168 2125 214 1809 38 Subtotal 2331 940 1100 198 2244 95 19C4 170 PROTCZOA Saccate pro'azoan Subtotal TOTAL 210G3 3046 15510 1974 24514 2618 22991 3534
~
Data pecsented as no. of whole orgarisms/1 and cer ;;uted fecm 2 vertical tows witn a Wisconsin plankton ret (12 cm diamoter , O.C30 mm mesh) at eacn sampling sataion. ' S.D. = Stendard Deviction a Sample no. 2 diluted 1:1 to allow accurate countiry, b Both sarrples diluted 1:1 to allow accurate ccunting. ee *-m ---e mm -e +e - se.wm an--.e- me.. - - * * *.* * *- = e y.
108 TAGLE 20 ANALYSIS CF PHYTCPLANKTCN PCPULAT!CNS AT LCCUST. POINT
- 2 Nover-ter 1976 IMecn/
TAXA Statten S.O. BACILLARICPHYCEAE (Diatoms) Asterionolta formosa 949 306.9 Cycloto!!a so. 20 25.1 C.(giomo rata) 2 5.8 Fragitarta crotenonsis 741. 301.2 F. spp. 2772 1130.5 Molostra granulata 8 18.7 M. islandica 320 253.5 Eeohenediscus bindertr*us 3023 1591.S S. tenuis 3 8.5 Synedra sp. 3 6.9 Tabellaria sp. 148 93.3 Subtotal 7993 3358.1
. CHLCRCPHYCEAE (Green Algae)
Actinastrum sp. 8 23.1 Arkistrocesmua sp. 1 4.3 r Blnuclearta sp. 724 389.6 Clostartum sp. 152 141.6 Ccelastrum sp. 5 17.0 Coelosschaerium sp. 11 18.3' Dictyosonaertum so. 2 5.8 Micractinium sp. 20 29.8 Mugeotia op. 1C29S 4925.8 Cocystts sp. 2 4.1 Pedtastrum bicadiata 117 50.1 P. cuo tox 99 53.4 P. simotex 200 185.4 Plan %tosanairia sp. 5 11.3 Schaerocystis sp. 4 10.9 Stauratrum caraccxum 11 13.9 Suetotal 11744 3555.9 OtNOPHYCEAE (Gir. fin;s!!atss)
,, Ceratturn hirundinella 2 4.3 Suotetal 2 4.3 MYXCPHYCEAE~
(Blue-Green , Algae) Anabaena soiroides 16 58.89 6 sp. 4 9.56 Achanizomenon sp. 109 122.04 Microcvstis incerta 6 9.51 A1 sp. 2 5.74 Oscillatoria 2442 2424.03 Subtecat 2578 2578.32 PROTOZOA Saccato orotezcan 7 17.41 Subtotal 7 17.41 TOTAL 22324 10598.37 Cata presentad as no. of whole orginisms/l and cor*;uted fecm 2 vertical tcws with a Wisconsin plar.Nton net (t2 cm diameter, 0.253 mm mesh) at each sarrpting sataien. - S.D. = Standard Deviation a Sample no. 2 citutetJ 1:1 to allow acct,rato countinr;. b Both sartples diluted 1:1 to allow accurato counting.
107 APPENDIX B ZCOPLANKTON POPULATIONS FROM LOCUST POINT, LAKE ERIE JULY - NOVEMBER 1976
108 TAGLE gg
#NALYSIS CF ZCCFt A.'UGCN F0F1.l* ATIONO AT LOCUST POINT' 20 ,!uty 1076.
74p 9tation 1 1 Statten 3 I %tten 6 st y (on a Mean iS.D. l .V.ean S.O. (Acan S.O. Mean S.O. ROTIFERA Anc h nch m e M ederta 2.0 2.4 0.0 1.2 4.1 1.0 Oecatres lwnni ' Br3tHorus emuleris 5.0 2.4 10.3 4.6 1.4 0.4 23.1 5.5 E .Ef.lYCIN"N 1.1 1.5 0.3 0.4 0.3 0.4 1.0 0.0
% dt+ sicernas a bsvam pasts 0.6 0.8 1.0 0.7 L orcootaMs CFac mee s ster- enmi t s 0.3 0.4 Conechnotdes .ID. O.3 0.4 Fillnia terminnits 0.5 0.7 Kellicettta lorotcolns 1.7 0.8 1.0 1.4 0.6 0.8 0.8 0.4 Karacatta cochlearts 4.4 1.5 3.6 0.3
& _ouscrata 2.0 2.4 1.2 0.3
& serrutata 1.7 2.4 0.5 0.7 0.3 0.4 0.5 0.7 i L vatea Notbolet spp. 1.1 1.5 Polyarthra spp. 0.6 0.8 7.8 S.7 1.7 0.0 2.9 1.4 Pom:',holyx sulcata 11.6 13.2 6.5 2.1 5.0 5.7 3.9 0.7 Synchanta spp. 6.1 3.9 7.8 1.8 2.0 0.4 11.3 2.*
Testucinella sp. O.3 0.4 . Trichocerca rrvallierints 0.6 0.8 0.3 0.4 0.8 0.4 Trict oteta tatractis 0.3 0.4 Untndantified Rottfer. 0.6 0.0 Subtotal 40.7 8.5 35.6 5.6 12.7 5.5 55.3 5.0 COPEPCOA Catanotd Copepods Diantomus slettotdas 1.5 0.0 0.6 0.0 1.0 0.8 D. crecorsensis 1.0 1.4 0.8 0.4 Immatt.ro Cr.Lanoid 5.5 3.1 4.3 3.2 3.9 3.1 6.0 1.0 Nauptll, Catanoid 6.6 3.1 10.5 1.4 12.1 3.1 15.3 0.7 Cyclopoid Cepepods Cyclops bicusoidatus 0.3 0.4 tnomast A C. vernatts 21.5 30.1 6.5 9.1 11.0 15.4 9.4 13.2 Immntt.co, C. vermlls 29.7 0.0 21.3 11.6 22.9 4.3 21.4 0.4 ImmaNees, Cyclepuid 27.5 38.5 11.0 15.4 14.1 18.2 11.6 15.5 Nauptt!, Cyclopold 2.2 0.0 9.3 1.8 8.3 1.5 9.9 3.1 Subtotal 93.0 14.6 66.2 19.6 72.0 9.3 70.0 4.1-CLADOCERA* Bosmina lengtrostris 0.3 0.4 0.6 0.8 0.3 0.4 Clydorus schaericus 2.8 0.8 1.8 2.5 3.1 0.4 1.4 0.0 Daohnta cateata mondoen O.6 0.8 3.5 2.1 2.2 0.0 1.2 0.3 O._rct'*ocurva 54.5 20.9 134.3 12.3 95.5 7.4 63.6 1.3 Ovaobanosoms touchten- 0.0 0.8 1.3 0.4 0.0 1.3 0.3 0.4 berStatsm Eubosmtru coragent 135.3 0.0 137.0 49.0 175.3 22.8 88.8 22.8 Leotodora ktnctit 0.3 0.4 0.5 0.7 Subtotat 103.0 20.C 278.5 41.3 278.1 16.2 155.8 24.5 PROTOZCA Otinugia so. 236.0 111.7 75.5 43.4 102.0 34.7 83.6 23.0 Unutenttried Protozonn A 442.1 018.3 817.6 13.8 560.4 797.2 459.3 638.4 Unidentified Protezoan B 1C0.4 151.8 218.5 226.3 Suttotal 678.1 507.2 1C01.5 181.3 672.3 544.0 758.1 310.9 TOTAL 1004.7 504.1 1379.5 247.C *036.0 522.7 1045.4 '.27. 2 Octa presented as no, of orgentsm1/t cr.d cem;Lted from 2 vertical tows with a Wisconsin ptrireton net (12 cm diameter , 0.080 mm mosh) at eacn samptt 3 staticn. S.D. = Standard Deviation
- e,
109 ? TAGLC 29 ANAL'/ SIS CF ZOOPLAN; CON PCPULAT!CNC AT LCCUST POINT * ' 20 . July 1076 __sent ten 9 g:etion 12 gatten ta Tm i g;atten 14 Mean iS.O. I vean S.O. Mean i S .O . ' Mean S.O. ROTIFEPA y ea + a ert M ea*a 1.7 0.3 2.4 1.2 2.0 0.0 9.2 5.0 c.a s u. .s F.gl gNede. us arautvis 0.8 1.2 24.3 1.3 2.4 2.2 2.3 0.4 33.4 6.4 g eci..etn ns 1.2 1.7 0.8 1.2 0.3 0.4 1.8 1.7 1 dive st-craus 1 kweatersic 0.2 0.3 0.4 0.6 0.3 0.4 2.8 0.6 L urcachris 0.2 0.3 Chro-acces*e ovalf s Cene 9 Me @ s.39 j Ft1tain teminalf s O.2 0.3 Kel1(cettia leretsetna 0.0 0.0 0.8 1.2 1.0 0.0 0.6 0.3 Keratotte cocntearts 3.0 1.3 4.0 3.4 0.3 0.4 3.2 2.8 K. cuadesta 0.8 0.3 2'. 0 1.7 2.5 0.0 1.0 0.3 i E serrutata 1.5 2.1 0.4 0.6 0.5 0.7 0.4 0.6
$ vat;a 0.5 0.7 Nothotea sep.
Polyartera spp. 2.8 1.2 3.6 0.6 0.8 0.4 3.4 0.3 PsmePolyx sulesta 6.3 2.5 4.4 1.7 7.0 0.0 6.0 2.8 Synchneta spp. 12.0 3.2 7.6 2.8 3.5 0.0 15.4 5.3 Tes ucine'.la sp. Tricrocerca n ulticcints 0.3 0,4 o,4 o,e Trichttria tetract:is 1.2 1.7 0.3 0.4 0.6 0.3 I Unincanttfied Rottfer Suttotal 55.8 2.6 30.4 9.0 22.1 1.4 78.0 27.0 COPEPCOA Calanoid Cepe::cds Of actomus steiletdes 1.5 1.3 0.4 0.6 1.0 0.0 i 1.0 0.3 D. oraconensis 1.0 1.4 0.5 0.0 0.4 0.6 Imr sture Catanoid 6.5 5.7 7.2 2.2 3.8 1.2 NauplII, Calanctd 5.0 2.0 13.8 3.4 9.6 3.4 6.8 0.4 11.4 4.2 Cyclopold Ccpapeds _Cyct,cos bicusoidatu: 0.3 0.4 U.8 1.2 timmast S versalts 8.4 11.8 20.0 28.0 9.3 13.0 6.0 8.4 Immatero, C. veraalts 8.9 2.8 34.8 0.6 23.3 0.4 5.0 2.0 Immatures, Cyclopold 10.5 12.6 22.4 31.4 14.3 20.0 9.0 12.6 Naupill, Cyclepold 12.0 6.7 6.4 2.2 6.8 3.9 8.0 4.5 Subtetal 62.9 18.8 101.6 10.1 65.8 11.9 45.8 12.6 CLADOCERA* Hormira torgirostris 0.6 0.8 Chvccrus sc9aertcus 0.9 0.0 4.0 2.2 2.3 1.8 1.2 1.1 Oacents cateata mendoto 1.0 1.4 0.4 0.8 0.8 0.4 O. retrocurva 48.9 6.3 32.4 3.9 78.8 14.4 69.2 3.9 3asnarcsoma leuchten 0.3 0.4 1.8 2.2 0.3 0.4 1.2 1.1 bergtanum Eubosmtrv.s cereconi 104.9 39.3 134.4 80.1 129.3 50.1 65.4 13.2 Lectoc ,an f<inctti 0.3 0.4 1.2 0.6 0.5 0.0 0.4 0.0 Suttotal 156.3 47.8 244.0 75.2 212.0 37.1 138.0 25.1 PROTCZOA Otfflo;ta sp. 95.0 12.9 144.0 87.4 88.8 38.2 63.2 32.5 Untdentitled Pactezoart A 1454.1 550.2 786.8 1101.5 381.2 813.7 354.9 496.9 Unid6ntified Protozcan 8 229.3 37.3 Subtotal 1778.4 503.3 230.8 1014.2 TOTAL e68.0 775.5 48.t 464.4 2053.4 446.1 1303.8 913.0 g37,9 727.9 s70,0 399.7 Data present3d as no. of organisms /l and comput3d from 2 vei tical tows with a Wicconsin plankton net (12 cm diameter, 0.080 rrm mesh) at cach sampling station. S.O. = Standard Deviation ! i b o -e l
9 TAGtE 29 ANA .'3:3 CF ZCCFi ANKTCN i:CPULATICNS AT LCCUST POINT
- 20 July 1976
. _Sta t i n te 19Mtien 2G 27 i Ste=*ien 29 Tm Mean 9t:ri -a iS.O. l .*/.enn S.O. Mean i S.O.ItAcan i S.O.
ROTIFE"RA t,se.rcsm nrmee q 9.3 0.4 1.2 0.6 9.2 2.2 0.4 0.0 Pecah- m hjel m et e rmedfor .s on es srt.: 22.8 0.0 46.8 11.8 25.7 4.3 2.3 0.6 L ent einems 0.8 0.8 2.2 0.3 1.8 1.4 0.2 0.3 g et,,,. st eorm3 1.2 1.7 g 8.v.n ,,rs e, 1.5 0.4 0.2 0.3 2.0 1.7 0.8 1.2 L W eeotects Chrem- 9she evelin Core-541 eM es ,gg. 8:ittrie terminstt , 0.4 0.6 0.4 0.6 Kell lc0ttis for ;tsolna O.6 0.0 1.0 0.0 0.4 0.0 0.4 0.0 Ker cts!M c00htearts 1.8 0.8 2.4 0.6 2.0 1.2 1.0 0.3 K. cuadra01 0.6 0.0 0.4 Os0 1.6 1.2 0.8 0.6
-E serrotata 0.9 1.3 2.6 3.6 1.2 1.7 0.8 1.2
$ val:a 0.6 0.8 Netho!ca spp. O.3 0.4 Petycrth. A spp. 1.5 0.4 3.4 0.8 3.6 1.2 1.0 0.3 Pomeholyx sulcata 4.2 3.4 10.5 3.3 5.8 2.5 5.1 2.4 Synchnsta spp. 12.0 0.3 23.2 0.6 11.4 3.6 4.4 2.9 Testudinilla sp. S.G O.8 Trichecerca multiccinis 0.3 0.4 0.2 0.3 0.6 0.3 Trice.ctria tetractts 0.9 0.4 0.2 0.3 Unintentified Rottfer-Subtctal 57.3 5.5 94.5 12.3 67.7 'O.7 17.8 5.7 COPEPCOA Calanoid Cepepods Diactemus siciloides 0.3 0.4 0.4 0.0 0.6 0.8 1.3 0.3 Og oracenersts O.6 0.2 0.4 0.0 0.2 0.3 0.6 0.8 Immatura Calancid 3.0 1.7 0.4 0.0 5.4 3.6 3.7 1.C Nauptll,. Calanoid 6.6 13.8 0.8 5.3 10.4 1.2 10.5 2.1 Cyclopoid Cepe;cds C',m!0es b! usoidatus 0.2 0.3 the m sst C. varnalls 6.3 8.8 10.0 14.0 7.4 10.4 12.4 17.4 Immatur o, C. ver nalls 5.7 3.7 IS.G 1.4 9.0 1.4 18.4 0.0 Immaturco, Cycicaoid 9.9 13.9 10.2 14.3 17.0 12.0 12.0 16.8 Nauplll, Cyclcpold 4.5 2.1' 14.8 2.8 9.0 1.4 9.6 0.3 Subtotal 36.9 2.1 66.6 1.4 54.0 9.5 68.7 0.1 CLAOCCERA' Sosmir,1 lorcirostris 0.6 0.8 Chvccrus schaer teva 1.5 1.3 2.0 1.1 0.8 1.1 1.3 0.3 DaoMa galoata mendete 2.0 0.0 1.2 1.1 O. retrocurea 48.0 4.2 101.2 5.0 4.6 5.3 71.7 19.5 E,:urocoms leucht,a 0.9 1.3 0.2 0.3 0.4 0.6 1.0 0.3 berew um Eubosmtn2 corepont 39.0 13.4 109.0 35.0 135.0 44.7 Lectodora kiro;tt 0.0 0. 4 0.2 0.4 0.8 0.0 Subtotal 90.3 20.6 214.6 40.6 5.8 3.6 211.6 SG.7 PACTOZOA Cirituria sp. 64.3 18.5 GS.S 35.0 15.8 22.1 58.3 9.9 Unicortified Prot.czoan A C34.4 231.3 2100.0 160.7 202.8 187.3 203.9 202.5 Unidertified Pectezcan D 47.2 0.0 205.0 34.4 25.4 35.6 Subtctal 793.4 230.1 240.3 214.0 297.3 246.0 252.:3 TOTAL 030.9 287.^ 2403.6 p?o.3 , l281 .7 333.0 309.6 192.2
- sa4.i Cc.ta presented as no. of organtcms/l ar.d computed from a vertic.21 tows wtth a W!cconsin plankton net (12 cm dicmatar , O.C80 mm mesh) at cach sampling station.
S.O. = St:ndard Deviation
-e
- w - - * -
111 TABLE 29 ANALYSIS OF ZCOPLAN?<TCN PCPUtATIONS AT' LOCUST f'GINT
- 20 Juif 1976 St a t ion 29 Mcan/ i
,Mcan iS.O. Station ! 3*O*
, ROTIFERA A-elnachert pricdor*a 32.4 17.9 5.8 8.7 Bemten b. dent 0.1 0.2 Genchieros cacularis 38.4 16.5 10.3 15.5 L calvetrn us 2.1 0.4 1.1 0.7, 0.1 0.3
& diveretcoms L b. van a.eg t s 2.4 0.E O.9 0.9 L uacne%rts 0.1 0.1 Chme ocast?r ovalts 0.3 0.4 0.1 0.1 O.1 0.1 Coroch!1oMos 3 1 llinta temirmits 0.1 0.2 Kollicc*tia icngtsnina 0.3 0.4 0.8 0.4 Koratotta cochtcarts 4.5 0.4 2.0 1.7 K. cuadrata 2.1 2.0 1.2 0.9 E serrulata 1.5 2.1 1.0 0.7 E valoa 0.1 0.2 Eotholca spp. O.1 0.1 .
Polyarmea spp. 6.0 5.0 3.0 2.1 Pomoholyx sulcata 4.2 1.7 6.3 2.4 Synchseta spp. 18.3 2.9 10.4 6.1 Testudinetta sp. c.1 0.2 Trichocerca multicrints 0.3 0.4 0.3 0.3 Trterrtria tetractts 0.3 0.4 0.3 0.4 Unindenttricd Rottfer C.1 0.2 Subtotal 113.1 46.6 53.2 29.5 COPEPCOA Calanoid Copepods Otactemus siciloidcs . 1.2 0.8 0.8 0.5 O. cregonensts / 2.4 3.4 0.6 0.6 Immcture Catanoid 0.3 4.6 4.7 1.8 Nauptll,. Calary>td 9.9 4.6 10.6 2.9 Cyclopold Copopods Cyclops bicusoidatus O.S 0.4 0.2 0.3 thomast
& vernalls 7.2 10.1 10.4 5.0 Immature, C. vernalls 12.3 1.3 17.7 9.2 Immatures, Cyclepold 12.9 18.0 13.6 5.4 Nauptll, Cyclopold 13.8 4.2 8.8 3.5 Subtotal 63.6 17.2 67.5 17.2 CLADOCERA' Bosmina longirostets 1.8 1.7 0.3 0.5 CNdertis sphaes-tcus 0.0 1.3 1.8 1.0 Cachnta gatesta mendete 0.6 0.8 1.0 1.0 i
O_. retrecurva 77.7 5.5 60.3 3T.2 Otacharosoma teuchten- 1.8 0.8 0.8 0.5 berciarum Eubesmiru core:ont 79.5 31.5 106.4 52.1 Lectecra ktr.dtti O.4 0.4 Subtotal 162.3 39.9 1C0.1 75.5 PROTOZOA Ot fitug te sp. tt9,j 49,g 93,3 33,g Unidentirted Protozoan A EC4.0 0.0 705.G $37.4 Unidentified Protozoan B 30.0 50.4 c3.8 C0.3
' Subtotal ca3,1 3,3 sc7,e -
TOTAt. 1025.1 102.3 11G8.2 bog,3 35.3 Cata presented as no. of organtsn-s/t and corrputed fem 2 vertical tows with a Wisconsin planMton net (12 cm diameter, 0.080 mm mesh) at each sampling station. S.O. = Standard Caviatten
._ _ _. _. _ _ . _ _ _ _ _ . _ _._ . _ _ _ _ _ _ _- _ ~ _ _ , 112 i
TAept so
! . ANALYS!S CF ZCCPLANKTCN POPULATIONS *
. . AT LOCUST POINT
- 18 August 197G 4
d I Station 8 i StMien 3 Swien S ! SMefen 8 i Maan S.D. l Mosn S.D. Moan S.D. Mean i S.D. I ROTIFERA
, Asolanch a s:p.- 39.0 8.4 46.5 7.1 31.5 5.9 17.6 1.3 Stoalcus ttd'sent Bescetor us argularts' 19.2 9.0 29.5 0.7 18.5 5.9 20.2 6.6
- B. calyctnerus 1.2 0.S 7.9 2.7 4.0 0.8 4.6 1.8 B. ctverstece -is 1.2 0.S 1.2 1.0 1.0 0.8
! Chromogss ar ovalls.
Kettletetta ier.;tsonna 0.7 1.0 0.4 0.6 Kerntella cecetear ts 3.8 0.0 4.1 3.2 2.8 1.0 1.5 1.0 i K. cuacrsta O.8 0.0 1.4 0.0 2.7 0.3 1.5 0.6 l E ser rulata 0.8 0.0 1.2 1.0 0.6 , 0. 3 0.2 0.3 I Eolyarten z;p. 18.4 2.7 20.9 13.9 10.1 0.6 38.9 28.6
, Synce nta s;p. 710.7 62.6 424.1 110.7 453.2 89.5 311.2 21.8 Triceccar ca cylindelca 0.2 0.3 I
E rvvatttertets O.4 0.5 1.4 0.7 .1.3 1.3 1.2 1.1 i Uniderr.ifted R0ttfer ' 2.5 3.5 0.8 0.6 l Subtotal 795.5 59.6 538.9 140.6 527.2 105.S 399.3 56.6 CCPEPCOA Calenoid C.cpepods
- Diactomus eregonensis g stettotees O.2 0.3 Ectschuru tacus*rts 0.3 0.4 Immatur es, Catarold 0.7 0.3 0.2 0.3 0.8 1.2 Navoit t , Cala otd 7.0 1.4 0.2 0.3 5.5 0.0 6.9 4.5 Cyclopotd C:papocs I
Cycleos bic;3pidatus o,3 o,4 ther? ast C. versalls. 'O . 2 0.3 1.3 0.3 Immr.turas, C.b. thomast 1.2 1.0 1.3 0.0 0.4 0.6
.!mmatur esig. vernatts 4.6 1.1 6.7 0.4 3.6 2.7 4.3 0.8 Immaturos, Cyclopold i
. Nauplili Cycicpold 31.2 3.8 14.8 3.9 18.7 1.5 15.8 2.9 Suttotal 42.8 S.O 30.2 4.8 29.5 4.6 29.7 3.1 CLACCCERA ,
Chydorus schaericus 0.4 0.6 0.5 0.0 C.8 0.6 1.5 0.6 Dache.ta esteata merecto - 0.2 0.3 D. ra.troc :.Na 0.2 0.3 - i DIachanoss.va lauenten- 0.9 0.0 1.1 0.4 1.0 0.8 ber gtarum
, Euteosmar a ceregent 1.2 0.6 0.9 0.0 0.4 0.0 2.1 *0.8 Lectocor a kie.ctit Subtetal 1.6 0.0 2.3 0.0 2.3 1.0 5.0 0.5 PROTOZOA Diffhqta spp. 1.9 0.S 2.5 1.0 0.4 0.6 1.5 0.0 Saccato Pr0tozoan, 9.0 13.0 03.0 53.0 Unknown Prctezcan A 108.0 101.0 238.0 24.0 Subtotal 1.9 c.6 119.5 130.3 238.4 24.6 84.0 53.0 TOTAL 041.8 65.0 348.0 266.1 797.4 87.9 518.5 110.7 Cata pt aser.ted as o. of organisms /l and computed from 2 vertical tows with a Wisconsin plarWton r et (12 cm ctameter, O.C8 mm mesh) at each sartpling station.
S.D. = Stardard Osviation 9
,. . -.w . em.=
- _-.9,,y. ,,.-4 _ _ > _ _ . - . . ._-,_-._-,_w ,-- y . . . _ , . , ,
,3. ___y9 ,g.,,, --.m----- .% _- ,,y,,
113
- TASt.E 30
- ANALYSIS OF ZCOPLANKTON PCPUt.ATIONS AT LCCUST POINT
- 18 August 1970 7.g .Statien 12 Statten 13 I 9atien 14 1 9atien 18 '
Mean S.O. .v.can S.D. Mean S.O. Mean S.O. ROTIFERA Asolanchna spp.' 38,4 9.1 24.0 0.7 7.0 5.0 29.3 a.5 Bicalcus hudsoni ,, 0.3 0.4 0.5 0.7 Brachionus ancularia 14.4 4.2 13.0 2.1 18.4 3.4 17.3 0.4 B. calyettlerus 2.4 1.7 1.0 0.7 1.6 1.2 2.8 1.2 g diverstecenus 1.8 0.8 1.0 1.4 Chromegaster ovalts. Kellicottta longtsoina 0.3 0.4 0.2 0.3 0.3 0.4 Keratella cochtenets 4.8 0.2 2.5 2.1 0.8 1.2 4.8 1.8 K. cuact ata 1.5 0.4 1.0 C.O 1.0 0.8 1.0 0.7 E serrulata 4.5 0.4 0.5 0.7 1.0 0.0
, Elyarthra spp. 54.3 5.* 44.5 4.2 22.6 6.4 ' 63.3 28.4 Synchasta spp. 969.9 34.0 658.3 1C8.9 336.2 45.6 738.8 35.4 Trichocer ca evitndr ica *
- 1. multiertnis 2.4 0.8 1.0 1.4 't.O 1.4 3.8 1.8 UI1 identified Rotifer.
3.6 0.S 4.0 2.1 0.8 0.6' 6.3 0.4 Subtotal 1098.3 42.4 750.6 109.1 390.8 58.0 868.7 61.3 COPEPOOA Calanoid Cepepods
; Diactorrus oregon.snsis 0.3 0.4 0.2 0.3 D. stettotces Ectschur-a la=ustr i.s Immstu. es, Ca!anctd 'O.3 0.4 0.3 0.4 0.4 0.0 0.3 0.4 i Nauolti, Calar old 3.9 2.1 2.0 1.4 0.8 1.2 0.8 0.4 j Cyclopold Ccospecs j Cycloss bicusoidatus i thems st
- C. verrulls . 0.6 0.8 'O.2 0.3 0.5 0.7
' Immawres, C.b. thomast 0.3 0.4 0.5 0.7 Immaturesi$. vernalis 3.3 1.3 2.0 0.7 4.8 0.4 Immatures, Cyclopold . ,
Nauplit,' Cyc!cpoid 42.0 2.5 35.8 1.8 17.2 5.6 38.8 10.2 Subtotal 50.7 6.3 39.0 0.7 18.8 4.5 44.7 12.3 CLADOCERA i Chydorus schaer!cus 1.2 0.0 0.3 0.4 Daphnia galeats msedete
- D. retr-ocurva 0.3 0.4 Diaphar oroma leuenton- ' O.6 0.8 0.3 0.4 ' O.4 0.0 0.8 0.4 ber giarum Eubcsmina .coregent 0.3 0.4 0.3 0.4 0.6 0.3 2.3 ' O.4 Leptocor a k nctti Subtetal O.9 1.3 0.6 0.1 2.2 1.4 3.7 0.4 PROTOZOA Difflugin spp. 1.8 0.8 1.8 1.8 1.0 0.8 ~ 7.0 1.4 Saccats Pr otozoan, 36.0 50.0 Unt<nown Protozoan A 432.0 101.0 500.0 250 0 ,168.0 34.0 400.0 56.0 Subtotal 469.8 151.3 501.8 d' . ? }f59.0 34.8 407.0 57.4 TOTAL 1619.7 219.9 100t . .e v ) 430.6 1C8.8 1324.1 16.7 s .w s a Data presented as no. of c. ganisms/l anc smk. ,._ am 2 vertical towc with a Wiscorisin plarkton net (12 cm diameter , O.j'4 mm mec) at tach sarrpling station.
S.D. = Star dard Deviation e ia
.m , . ,_.,_ m_ . , . , _ . , . .- . _ _ . _ - . . _ -. -
114 T Aif,L E 30 ANALYSIS Cf7 ZCCPLANKTCN CCPULAT CNS AT LCCUST POINT
- 18 August 1976 7 . Stat ten 28 I Etntion 27 Sta t ie, 28 l Stre.Mn 29 tAcan tS.O. l .v.can S.D. Mean i S.O. Mean S.O.
ROT!!: ERA Asotanchna sep.' 48.3 0.E 6.5 3.1 0.8 1.2 12.3 2.4 Bicat=us twdsoci Scacnterus argutarts 22.0 8.5 19.0 0.7 8.7 12.2 35.9 11.1 8; calycincrus 6.9 1.4 2.0 1.5 0.6 0.8 0.3 0.4
- 8. dtverstecerns 3.5 1.8 O. i 0.7 1.1 1.5 Checmogaster ovalts .
Ketticottia tergicoina 1.0 0.3 0.2 0.3 0.6 0.S 0.3 0.4 Keratella c=rtaarts 1.5 1.3 2.2 0.7 1.1 1.5 2.8 2.4 K. cuadrata 2.6 0.5 0.6 0.8 K. serrutata O.6 0.S 0.4 0.6 Polyarthra rpp. 16.8 1.6 24.1 12.6 17.6 24.6 35.6 6.7 Synchaeta spp. 295.1 9.1 365.5 44.5 179.3 251.0 605.6 84.3 Trienceerca cylindrica
- 1. multterints 0.2 0.3 0.9 0.0 0.6 0.8 1.7 0.8 U.identiftec Retirer O.2 0.3 0.9 0.7 0.'8 1.2 3.6 2.0 Suttetal 398.7 21.0 421.8 74.3 211.6 2G6.2 693.7 85.4 COPEFOOA
-Cala old Copepeds Diar,tomus cregocensis
-O. stettoicas 0.2 0.3 0.2 0.3 0.' 3 0.4 Eoiscrura la ustris Irr. matures, Calancid 0.6 0.8 0.5 0.7 0.4 0.6 0.3 0.4 Nauolti, Calanote 0.8 0.6 0.6 0.8 Cyctcpotd Cepepecs Cyc!c7s bicusoidatas O.4 0.6 ti-om:st C. vernalis . 0.6 0.3 0.2 0.3
' Immatures, C.b_. thomasi. 0.6 0.3 2.4 0.3 1.5 2.1 0.6 0.8
.!mmaturssi C. verna t t s 6.4 2.3 1.7 2.4 3.6 1.2 Immaturas, Cyclopold 0.2 0.3 Nauptlij Cyclopold 14.6 1.3 23.9 5.2 14.6 20.4 27.2 04 1.4
~
Suttotal , 25.8 0.3 28.7 17.3 24.3 32.6 0.4 CLAOOOERA Chy /orus schnericus 0.2 0.3 0.7 1.0 1.9 2.7 0.6 0.8 Daonnia galei. a mandets O. retrocurva O.4 0.6 0.3 0.4 Ota:Manosoma leuchten- 0.4 0.6 0.8 1.2 0.9 0.4 bergtarum Eudosmtr.a .ccregoni 2.3 2.1 0.2 0.3 1.1 1.5 0.6
- O.0 Leots:foca kirctti Suhtotal 2.9 2.8 0.9 0.6 4.2 5.6 2.3 0.0 PROTOZOA Ot f.".ugia spp. 3.4 0.6 1.8 0.7 11.2 7.0 Saccata Protescan, d Ur.'<rtwn Prc52can A 158.0 32.0 85.0 0.0 38.0 53.0 88.0 31.0 Subtetal 161.4 31.2 86.8 0.6 38.0 51.8 99.2 15.1
- TCTAL 599.8 50.1 538.2 76.9 271.1 377.0 S32.9 61.9 Cata presented as ro, cf ceganisms/l and computed from 2 vertical tows with a Wisconsin plan'< ton met (*3 cm diameter, 0.C8 mm mesh) at each sampling station.
S.D. = Standard Oeviatten
4 115 TABLE 30 ANALYSIS CI ZCCPt ANKTON POPULATIONS AT LCCUST POINT
- 18 August 197S 7 Mean/
Station S.D. l ROTIFERA j Asolanchna spp.' 25.1 16.0
. Bloalous hudsont , 0.1 0.2 Brachtonus angularis 19.7 7.2 B. calvetGerus 2.9 2.5 4
- 8. diversicornus 0.3 1.C Chremcgasteg ovatis.
Kellicottta torgte in't 0.3 0.3 a Kr.ratclla cochlearts 2.7 1.4
$ cuadrata 1.2 0.8 K. sermlata 0.8 1.2 Polyarthra spp. 30.6 16.6 Synchaeta spp. 504.0 231.9 Trichocerca cylinetca 0.1 0.1
' E rnuttiertnis 1.3 1.0 Unidentified Rotifer ' 2.0 2.0 Subtotat 591.7 253.4 1
CCPEPODA Calanoid Copepods Diaotomus oregonensis 0.1 0.1 l D. sicitoides 0.1 0.1 Epischura tacustris ,0.1 0.1 Immatures, Calanoid 0.4 0.2 Nauot ti, Calanoid 2.9 2.8 ] Cyclopold Copepods j Cycloos bicuspicatus 0.1 0.1 thomast 2 C. vernalis . O.3 0.4 Immatures, C.b. t'-omasi O.7 0.7 Immaturosi[.~veanatts 3.6 2.5 Immatures, Cycico td 0.1 0.1 Nauptlii Cyclopoid 24.6 10.2 i Subtotat . 32.6 10.2 2 CLADCCERA Chydorus schaericus 0.7 0.6 Daphnia _gatoista mandote 0.1 0.1
' D. retrocurva 0.1 0.2 Diachanosoma leuchten- 0.6 0.4 bergianum Eubosmina ceregent 1.0 0.a Le tocora kinotti Subtotal 2.4 1,4 PROTO?.CA Difflugia spp. 2.9 0.2 Saccata Protozoan, 11.0 25.0 Unknown Pretozoan A 184.0 172.0 Subtotal 193.1 170.3 TOTAL G24.8 395.1 Data cresented as no. of organisms /t and c:mouted from 2 vertical tows with a Wisconsin plarkton net (12 cm diameter, 0.03 mm mosh) at each sarrpling station.
S.D. = Stardard Oeviatton e s y,-,-py-- -- m -- -.~h - -e- -
- 3. -----r-- -
--.-a -g--q -
ym,-
116 TABLE 31 t ANALYSIS CF 2COPLANKTON PCPtJLAT!CNS AT LCCUST FOINT
- 14 Septemcer 1976 y _SM tion 1 19etien 3 1 q>:q b n 6 l <= >, n re 8 Mean i S . o . l u.can 6 s.o. Mean t S.o.itaean i s. o .
RCTir ERA Asolarc%a criadonta 32.4 11.3 7.3 .3 7.1 1.3 3.0 0.3 ers:n 'cui angutcets 2.5 0.0 0.5 0.0 0.4 0.0
- 3. . alerus 4 0.0
- 8. : zeste=rnus 19.1 2.4 18.3 3.1 S.5 4.2 4.2 3.5 Kein;c::ta !ar.gisotna 0.8 1.1 0.8 1.1 0.2 0.3 Kercta tta c:entecrts 8.1 4.8 6.5 2.8 11.5 11.2 2.6 2.0
$ Ovecea:a 5.2 0.8 6.8 1.0 5.8 5.2 9.4 3.8 g sce m ata 24.2 9.7 16.5 10.5 30.0 16.8 12.0 1.0 Plsosema lenticular a Po!/artnea sp. 65.0 33.3 37.4 25.4 34.5 14.7 18.4 2.1 Pcm::nclyx 'sulcata 7.0 4.8 10.0 4.2 19.0 11.2 6.9 2.4 Sy: enasta spp. 1.8 0.7 1.0 0.7 1.3 1.7 Tricrc:srca cyllndrica T. muit.crtnis 84.6 21.7 47.5 25.2 24.3 6.6 7.6 0.8 T riche:rta tetractis 0.5 0.7 0.6 0.3 Subretal 242.4 45.8 154.3 68.9 142.3 73.8 59.5 11.6 CCPCFCCA Calancid Copepods 6.4 3.9 8.0 2.8 12.8 5.9 5.0 3.4 Dia:temus minutus . O . 3' O.3 0.3 0.3 D. cre;cnensts 0.3 0.3 0.8 1.0 0.2 0.3
-E s;ctli: .
0.3 0.3
-0. stettcides 0.3 0.3 0.8 0.3 0.6 0.8 immatuees, Calt.noid Naup t ti, Calc.noid 1.8 0 .,7 1.8 1.3 1.8 0.3 0.8 0.6 Unthntified Catarold Cyc!:potd CO:sec'ds Cycle:s bicus=idatus tncm:st g vecestts 5.8 3.2 3.5 0.7 6.5 0.0 2.4 0.2 Tre::cye!ce: c-os tnes 0.2 0.3 tmmature s , C. o then as< 2.9 0.8 1.5 2.1 5.3 0.3 1.8 1.5
!~ matures, E Ternalis 20.7 4.8 8.3 4.5 27.5 1.4 4.2 1.0 Nat.pi!!, CycIcpota 55.2 9.7 37.0 11.9 37.5 7.0 23.0 2.3 Set:tal 92.7 2.3 60,8 6.6 93.3 11.5 38.1 5.6 CLACCCERA Bosmina ! ngfrestHs Chy: Orcs s :naaricus 169.1 14.4 54.3 29.0 53.0 11.9 30.8 1.7 Carnria gt:.cta m?rcet, g rete :urva 39.2 8.0 19.8. 8.0 27.3 1.0 14.2 0.3 Cinchsrosen a 7.5 2.4 1.5 0.0 4.5 2.1 4.0 2.1 teuchtartarcf snum o Caesmina coragont 140.4 6.5 84.5 37.1 72.5 18.9 64.5 15.1 Leet cern tdnetti 4.1 0.7 0.5' O.7 1.3 0.3 1.2 0.6 Ur.icen-lGed 0.4 0.6 St btotal 360.1 30.7 153.5 73.5 161.5 10.5 118.1 19.7 PROTCZCANS Dimria sp. 170.8 23.4 31.3 14.3 43.8 10.1 27.6 8.3 TOTA L SSS.O 97.4 4C9.8 133.5 440.8 106.1 243.3 45.3 Cata pressnted as numcar of organism:/L and ccmputed frem 2 vertical tcws with a Wisc0nsin p! niton net (13 cm dist- eter. 0.080 mm mosh) at each sampling statten.
l S.C. = Staccard Caviation
-_. - . . . _ - - . .- - .~ . . . - .-- .
- 117 i
~ ; . TABLE 31 l
ANALYSIS Cf: ZCCPtJNKTON ACPtlLATIONS AT LCCUST POINT
- 4 14 September 1976 i
.g g . Station G l SMtien 12 i Stat!cn 13 l Sh9en 14 Mean iS.O. Mean - l S.C. Mean i S.O. /.can ' S.O.
ROTIFERA Asolanchna criodonta 4.2 0.8 10.0 3.5 6.0 0.0 3.7 eccentonus 'argutcris 0.2 0.3 0.5 0.7 0.2 0.3
- 8. calyctticrus O.A O.6 4
E ctvsrsiccerus 2.9 0.7 2.0 1.4 2.4 0.8 l Etticottaa icngiss[na 0.2 0.3 1.6 1.3 0.9 0.4 0.9 0.6 Keratella ccchlearts 5.7 0.6 8.3 1.7 9.3 1.3 11.4 1.5 i K. Quacrata 7.8 0.8 4.3 3.1 4.2 1.7 4.8 1.1 E serrutats 12.4 2.4 26.3 5.9 16.5 5.5 26.9 2.5 Meosoma tar.ticulare 0.2 0.3 Polyarthre sp. 27.6 5.0 28.0 1.4 17.4 5.0 2S.4 1.1 ,
! Pcmpho tyr s.;tenta 9.3 0.3 28.5 4.9 12.0 4.2 14.0 2.1 i l Synchaeta s;;p. O.4 0.6 i j . Trichocarca cylindrica 0.3 0.3 l d T. multter:nts 7.6 3.8 41.3 9.4 61.5 8.0 23.9 14.1 (
) Yrichotria tetractis 0.2 0.3 -1.5 0.0 2.7 2.9 1.7 2.4 1 j Subtotal 82.0 7.8 155.5 18.9 135.9 2.1 118.7 30.1 3 . . i , CCPEPCCA ! Catanoid Copepeds 9.4 1.3 21.5 4.2 6.3 0.4 22.6 0.3 j 2 ;Otaotomus minutus O.2 0.3 0.3 0.3 j D. oregenensis O.4 0.6 1.5 0.0 0.3 0.4 1 E stettis
- I
*E siciloides 1.5 0.7 0.6 0.8 0.9 0.6
-Immaturas, Calanoid Naup tt t , Calanoid 0.4 0.6 0.3 0.3 3.3 1.4 Un[dentified Calanold ^
0.2 0.3 0.5 0.7 ' Cyclopold Copepods Cyclops bicusoidatus 1.0 0.7 thCmaS L
$ ve-nalis 1.6 0.4 4.5 0.0 2.7 8.4 3.0 0.0 Trecocyctc=s crostnus 0.2 0.3 0.6 0.8 Immatures, C. b. thomas: 2.5 0.3 23.0 0.0 10.5 0.4 6.9 3.4 Immatures, E Ternatas 6.5 4.2 11.3 3.2 8.1 2.9 1.6 2.2 Nauplil, CycEpold 33.2 7.8 26.8 1.0 23.4 2.5 29.5 3.9 Subtotal 57.4 9.2 95.0 11.2 54.0 4.2 70.7 1.1 CLACCCERA Bosmina 'lon;irostris 0.7 0.3' Cnyceros s naericus 51.1 8.3 70.0 11.2 44.7 9.7 34.9 ,ft.9 Caennia cnierta menceto 0.3 0.4 0.2 0.3 Q reteccurva 37.4 2.9 75.8 7.3 44.7 2.9 41.7 . 8.4 Diacharosema 7.8 2.9 8.5 2.1 6.6 1.7 9.1 1.1 1
lauchterbercianum
- Eubosmina corecent 87.0 10.6 173.8 9.4 102.9 20.5 63.0 5.2 Lectodera kinetti 2.3 0.0 2.5 0.0 0.9 1.3 2.8 1.5 Unidentified Subtetal 185.3 6.7 330.5 11.2 200.1 41.6 152.5 15.8 PROTOZOANS Diffiunta sp. 32.3 6.9 29.8 1.7 27.3 8.0 27.2 3.5 TOTAL 356.9 20.3 610.8 20.7 417.3 55.9 369.1 16.9 Cata presented as number of organisms /t and compuud from 2 vertical tows with a
- Wisconcin plce!< ton net (t2 cm diarreter, O.CSO mm mesh) at each sampling station.
i j S.D. = Standarts Caviation J g h g.s ee m e me * *- g -g -.- ..,-- - p w .m-_--e-_c,, m.,,_%mc- , _ _r_-,-'v*-e mre --i'wM-v= *==s---m=== M mm -eM*---n-PS- *--7-+-d m-~~ *T-+"W"
118 TAaLc 31 - AN AI .YSIS OF 7CCPI t..vXTON ccPUt.AT!ONS AT LOCUST POINT
- 14 Septerrbsc 1976 g, St.ction 18 I se,tien 26 cenW 27 i Stwon 29 l Mean 'S.D. l .v.cen S.0. Mean l S.O.I Mecn S.O.
ROTIFERA Aeolanch-s cricece ta 4.2 2.5 5.5 3.1 2.0 0.3 2.1 1.4 Seachice.us ' angutnet s 0.9 1.3 0.6 1.1 g calvctiterus 1,0 0.3
$ ctverriccenus 2.4 0.8 18.3 1.4 1.1 0.3 0.8 0.4 Kollicot*.ta tor;tsoina C.6 0.8 0.2 0.3 0.8 0.4 Kerstona ecentaaris 9.3 2.1 5.5 0.3 5. 4. O.3 2.5 1.8
$ cuacrata 5.7 4.S 13.1 3.5 S.7 3.2 2.3 2.9
$Pleosema serruina ;enticulars 22.2 7.6 8.2 6.9 13.4 10.8 8.4 3.S Polyarte.ca sp. 17.4 5.0 18.9 1. 1 18.5 4.8 7.3 8.3 Pemcholyisulcata 19.8 7.6 6.4 4.8 9.3 0.8 4.8 0.7 Sync.naata spp. O.4 0.6 0.4 0.6 Trichoc3. ca cyttedrica T. multicetnis 40.8 0.8 9.5 14.7 36.1 25.9 30.4 17.1 Yr-tc.*ctrta tetractis 0.6 0.3 0.7 0.3 0.2 0.3 Subtotal 123.3 15.5 88.4 19.3 93.0 45.5 60.2 19.S COPEFCOA Calanoid Copepeds 16.2 1.7 6.8 3.1 12.1 7 .' 7 10.3 0.0 Diastemus minutus 0.2 0.3 O. oreqcre.9 sis O.4 0.0 0.2 0.3 1.2 1.0 E s.ctits -
E sectic. des 1.8 0.8 0.2 0.3 0.2 0.3 0.6 0.3
-Immatures, Catanoid Naup t t t , Catar oid 1.2 0.8 0.8 0.6 1.3 0.0 1.1 0.0 Unic'setL9ed Calano(d 0.2 0.3 Cyclepold Ccpepo'es Cyc!cos bicuscice.tus thomast 0.9 1.3
-C. verraMs 5.7 2.9 0.6 0.3 2.2 0.0 1.9 0.5 Trc ,ccyc!ces prostrus Immutures, C. 6. tremasi 9.9 3.8 9.5 1.1 4.8 0.S 4.9 0.0 Immatures, E Terratis 10.8 1.7 7.2 2.0 14.7 17.4 7.3 3.6 Nauptli, CycEpota 26.1 10.5 28.1 5.5 22.2 3.2 15.2 3.8 Subtstal 71.4 5.0 49.4 8.3 57.5 7.0 43.3 1.8 CLACCCERA Bosmina Icegirostris .
~
Chyccrus schaer tcus 37.5 19.7 57.8 12.6 44.1 14.1- 41.S 3.5 caenma catena rwe:te
& cetreet.ma 65.4 25.2 24.4 2.5 46.9 0.6 33.1 2.7 O rachanos&.a 10.2 2.5 3.1 2.5 S.7 1.4 3.3 1.3 leuchte cero tant.rn E'ubosmins cer& cent 128.0 23.6 86.1 21.3 51.5 116.8, 63.1 19.S Lept. dcra kiretti 1.5 0.4 0.6 0.8 1.5 0.3 1.8 1.3 Unicantified 0.5 0.6 0.4 6.0 Subtotal 242.1 C9.3 172.0 34.7 198.3 4.2 143.2 25.2 PROTOZCANS Dimuqta sp. 24.5 14.3 30.G 15.7 18.1 1.1 3.8 2.7 TOTA L 461.4 104.2 340.3 G1.6 363.8 49.5 250.5 49.4 Cata presentad as number cf ceganismc(1 and corrputsd from 2 sert: cal to.vs with a Wisecer.in plankton cet ( 12 cm dian oter, 0.080 mm n esh) at occh camplicg station.
S.C. = Steedsed Ceviation l l em o >w - w
I l 119 l l TABLE 31 I ANALYSIS Cf: ZCCPLANKTCN PCPULATIONS AT LCOUST PCINT
- 14 September 1976
;.g Statien 29 Mean/
Mean S.D. S.D. Statten PCTIFERA Asolacchnri pricdonta 0.0 0.4 6.0 8.' Bracnionus argutcris 0.3 0.4 0.5 0.7 g calyc:florus 0.1 0.3
& cavarsiccenus 6.0 7.4 Kellicottta longtsolna 0.9 1.3 0.6 0.5
. Keratolla ccentearts 3.3 2.1 6.9 3.1 K. cuacrata 1.8 0.0 6.0 3.0
{ serrulata 8.7 1.3 17.4 7.7 Pleosema lenticulare 0.2 0.6 Polycethra sp. 24.0 2.5 26.4 14.1 PompholyC sulcata 8.1 5.5 11.9 6.8 Synchaeta spp. O.4 0.6 Tetchocerca cyllndrica 0.0 0.1 T. multicetnis 42.0 7.6 35.2 22.1 Trichotria tetractis 1.2 0.0 0.8 0.8 Subtotal 91.2 0.8 119.0 49.5 CCPEPCOA-Calanoid Cepepods 18.3 2.9 12.0 6.0 Of actomus minutus 0.3 0.4 0.1 0.1 D. oregonensis 0.6 0.8 0.5 0.5 E stcllis 0.0 0.1 { ,sicilo tdes 1.8 1.7 0.7 0.6 Immatures, Calanoid 0.0 0.0
' Nauplit, Calanoid 0.3 0.4 1.1 0.9 Unicentified Calanoid 0.1 0.2 Cyclepo(d Cepepeds Cyclops bicuspidatus tr.omast 0.2 0.4 g vernalis 2.4 0.8 33 . 1.8 Trecocyc!ces prosinus 0,t 0,2 Immatures, g 6. tecreasi 2.4 0.8 6.6 5.8 Immatures, C. vernitis 22.5 1.3 11.6 7.7 Nauplit, Cyc!cpold 22.5 7.1 29.7 10.0 St.ttotal 71.2 6.2 65.8 18.9 CLADCCERA Bosmina !cngirostris 0.3 0.4 0.1 0.2 Chycoros sphaericus 31.2 Daarnia galeata marec's 9.2 5 *. 4 36.0 o,3 o,4 o,3 o,3 g retrecurva 63.3 10.5 41.0 18.4 Dia.chanosoma 9.9 1.3 6.4 2.8 leucr*ter.barcianum Eubosmics coregoni 126.9 21.4 95.7 36.6 Leptodcra kinctil 1.2 0.0 1.7 1.0 Unidentified 0.1 0.2 Subtotal 233.2 39.8 204.7 71.5 PROTCZCANS Dimuoia sp. 4.5 33.3 5.5 41.9 TOTA L 390.9 50.0 425.6 161.6 Cata presentec as rumter of crganisr-s/l and computed from 2 vertical tows with a Wisconsin plar.xton net (12 cm diameter, 0.000 mm mesh) at each samplirg station.
S.C. m Stand 3r*d DeviatlCn
.. .-.e 120
. TAate 32 .-
ANALYSIS OF 7CCPt.ANKTCN PCPULAT:CNS AT LCCUST PCINT* 19 October
- 1976 Station 1 l T wion 3 l S atien 6 i S*ntien 8 Mean i S.O. l .v.can S.O. Mean l S.O.i.v.ean - S.O.
RCT!FERA Asolanchra ,e'e fcconta 14.3 10.9 4.C 5.6 9.5 6.3 3.2 1.1 6 sp. 3.C 4.2 Bioaleus budsort 1.3 1.8 Brachlorus arcularis O.4 0.6 8 catyci'iorcs 24.7 5.5 8.C 5.6 0.5 0.7 4.8 2.4 L diversicornus 1.3 1.8 17.0 2.8 0.4 0.6
& have-eensis 1.0 0.0 Ccrochttotd-s sp.
Kellico:ua tenaiscina 0.5 0.7 0.8 0.0 Keratatta cocht=aris 187.2 37.8 97.C 5.6 99.0 35
- at:i .O 9.0 L cua:; rata 217.1 78.3 261.0 *56.0 224." 46.2 76.4 34.2 K. ser-ut eta 188.5 1.8 65.5 20.3 #8.5 6.3 12.0 1.1 Placsema sp. 1.0 1.e
& lenticutere 1.3 1.8 0.8 0.0 Pelvarthra sgo . 244.4 156.5 179.0 54.6 178.0 25.2 155.6 20.7 Pemoe c!vx sulca'a 3.9 5.5 0.5 0.7 Synchs ?ta spp. 96.2 25.5 114.5 13.3 104.0 21.0 49.2 9.5 Trichecer ca cylindrica 1.0 1.4 0.5 0.7 0.8 1.1 T. multterinus 2.6 3.6 1.0 1.4 1.0 1.6 1.1 Eichotria tetrac'Is 1.3 1.8 1.6 2.2 Unknewr) S Subtotal . 984.1 296.6 736.0 1C6.4 732.0 108.6 343.6 73.4 COPEPCCA
, Calanoid Cepepeds 2.6 3.6 0.5 0.7 10.0 9.5 Diastemus sf cticides 1.3 1.8 0.4 0.6 Euryter o-a a."firis O.4 0.6 Immatures, Calanoid Nauplit, Calaeoid 14.3 1.8 10.5 0.7 24.0 1.4 19.6 7.3 Cyc!ccoid Cyctecs bicusoidatus themest C.b.t. (irrmatures) 5,2 3.6 15.5 9.1 14.0 8.4 10.8 5.0 g ve rrx .s 1.2 1.7 C.v. (tre. mature) 11.7 13.6 3.5 2.1 0.5 0.7 5.2 0.6 Tror:cevelocs prestrus Nauplit , Cyc!cpoid 97.5 12.7 58.0 4.2 69.0 5.6 59.2 2.2 Suttotal 132.6 25.5 87.5 16.1 108.0 1' 4 106.8 12.9 CLACCCERA Alora af'inis ecsmina Iereirostris 5.2 3.5 0.5 0.7 4.0 5.S Chvecrus* rchaericus 2.3 0.4 6.0 1.4 9.0 0.0 18.4 '3 . 4 Cehta retrocurva 2.8 5.6 Eubosmina corapent 10.4 3.6 9.5 4.9 12.5 0.7 17.6 2.2 Unknown O.4 0.6 )
Subtotal 17.9 0.4 16.0 7.0 21.5 0.7 51.8 9.9 i PROTCZCA 1 Centrechyris sp. Otif teia so. 35.1 9.1 15.5 2.1 30.5 7.7 10.8 1.7 l Subtetal TO"AL 1169.7 330.9 855.0 131.6 583.0 145.6 513.0 74.8 Data presesntad as no. or crgan:smc/l er,c ccmput:d frem 2 verttect tows with c. Wiscen: sin clankten ret (12 cm dicmet3r, 0.030 mm mesh) at each san pling station. S.C. = Standard Ceviction
. l l
l
- * * *
- h Ne e*. =e e ,.g,.- g
..N 4 ..6 4
121
. TAaLE 32 .-
, ANALYSIS OF ZCCPt ANKTCN PCPULATIONS AT LCCUST PCINT*
19 Cctober 1976 TAXA Statien 12 1 Sention 13 i static, 14 i Statien 18 Mean iS.O. t'Acan S.O. Mean S.O.l.v.can S.D. ROTIFERA . Asolar chm criodents 6.3 1.3 3.0 0.0 4.2 2.0 L sp. . Bloc!cus hudsent 8-acnionen a~ utarts 1.2 1.7 1.5 2.1
& calycirt:rus 23.4 10.1 10.0 S.4 8.3 3.1 11.G 4.9 8 d(versicercus 3.6 2.5 8 havar nersts CerochiloMes sp. 1.2 1.7 Keliscott:a torgiscina 1.2 1.7 Keretetta cochlearis 178.2 52.9 189.E 3.4 97.5 .14.7 120.4 19.6 L cuadrata 241.2 90.7 220.8 80.6 282.0 16.8 287.7 St.3 K. ser .stata 225.0 47.9 38.4 26.8 26.3 1.1 35.7 10.8 Piecsema sp.
'P. lentf eul s r, 4.5 3.8 0.7 1.0 Elvarthra s io . 375.3 97.0 170.4 118 4 220.5 48.3 226.8 41.2 Pem:-holyx sute'.ta Syrehasta sep'. 172.8 65.5 tc6.8 15.1 153.0 10.5 137.9 10.6 Tetchecer ca cylindelca 1 mutt;cricus 4.5 0.3 2.4 3.4 2.8 2.0 Trichetr'a tStmtet!s Unknovm 8 Subtotal 1146.6 501.5 802.8 250.4 792.0 65.1 700.0 11.8 CCPEPCOA Catsneld Cecepods 0.7 1.0 Diantemus steite! dss Eurvtemo-e c?'inis Immatur es, Catar old Nauptt!, Calar. id 13.1 9.5 36.0 10.0 10.5 4.9 18.2 7.C Cpl:pold Cyclons b!cusoieatus themast C .b .t. Ummctures') 19.4 17.0 21.6 6.7 12.0 2.1 11. 2 2.0 CJ vernail's S v. (immature) 5.4 0.0 3.6 1.7 3.0 4.2 3.5 4.9 Tecocevctoes erastrus 2.3 1.0 Naupl!!, Cyclopoid 80.1 16.4 73.2 15.1 103.5 10.5 62.6 27.4 Subtetal 117.9 23.9 134.4 30.6 131.3 22.1 116.2 35.3 CLACCCERA
_Atorn ar*!ric 80smina tereircstris 1.8 2.5 2.4 0.0 2.3 3.1 0.7
- 1.0 Chydorus schmericus 8.1 3.8 1.2 31.5 6.3 1.0
~1.7 ~11.9 Canhin ratecturva 0.7 1.0 Eubosmina c:receni 10.8 5.0 12.0 0.0 13.5 4.2 11.2 3.9 Ur,known Subletal 20.7 1.3 15.6 1.7 47.3 5.3 24.5 2.9 PRCTCCCA Centr ~ Svnts so.
Cif?!u;ia so. 37.0 30.2 31.2 6.7 11.3 5.3 25.9 1.0 l Subtetst TOTAL '323.0 554.4 984.0 235.6 931.8 87.2 667.3 26.5 Cata preser.:Sc as no. cf erge tsms/l ted Ocmputed 6 em 2 vertical tows with a Wiscensin plankten net (12 cm diameter, O.C60 mm mesh) at each samplic.g statt:n. S.D. = Star.dar J Davtation l l
122
. TABLE 32 -
ANALYSIS OF ZCOPLANKTON PCPUt.ATIONS AT LCCUST POINT
- 19 Octcber 1976 Statien 25 1 Station 2/ l grien 28 l 3:3 t ten 29 T~'<A Mean S.C. i .V.ean i S .O. I Mean S .O .1 Mean S.D.
ROTIFEIRA Asolanches criccenta 4.0 2.4 1.2 0.0 5.3 1.4 L sp. 3.6 Sinateus hudsoni Brechice.us arcularis
- 8. ca: feif te-us 3.6 5.0 4.8 0.0 4.2 0.S 17.9 4.4 L diversteerrus 1.2 1.7 1.2 1.7 E havacuersts ConecN ioida 3 sp, Kell [cottia !Orcisoira O.6 0.8 Kare.tetta cocmtearts 33.0 0.6 51.6 1.7 40.8 10.1 85.1 16.1 L cuadreta 87.6 8.4 149.4 16.0 69.3 5.0 278.3 42.6 K. serruttta 7.6 6.2 9.6 3.4 6.6 4.2 24.2 13.2 Pteosema sp.
L tanticulars 0.8 0.0 1.2 0.0 Pel.f nethra sgo . 119.6 12.9 129.6 5.0 111.0 0.8 223.7 30.9 Pemchotvx scleata 75.6 105.8 Svrenzet - 2;p. 66.4 16.8 93.0 2.5 78.0 11.8 77. 7 105.8 Tr icnceerca cylindrica 0.4 0.S 1.8 0.S 0.6 0.8 2.1 2.9 L mutticrinus 0.8 1.1 0.6 0.8 0.6 0.8 Tr!chotris tetractis Unkr.ov.n B 1.2 1.7 S c otal . 331.2 2.2 443.4 24.4 315.0 5.9 847.4 180.8 CCPSPODA Ca.!anoid Cepepeds 0.8 0.0 0.6 0.8 6.4 0.0 Cie r tem t. *2 sicifoldes Eveyte~ ors t?"f ri s i irr.maNees, Calanoid . Nv4til, Cals.aoid 6.4 2.2 7.8 2.5 11.4 4.2 16.8 2.9 Oyc!c;old Cveteos bicuroides thoma s t ~0.6 0.8 5.2 1.7 10.2 0.8 8.4 3.4 13.7 4.4 C.b.t. (immatums) 1.1 1N C." vernalis 1.1 1.7 0.3 1.1 1.4 {v.(tmrsture) 0.8 2.4 4.6 Tecocc'/efocs crasinus Naup tli, Cyc'epoid 68.4 it.S 57.6 5.0 43.6 0.3 64.1 16.2 Subtotal 81.6 12.3 78.6 9.2 72.3 0.8 96.6 8.8 CLACCCERA Aloas a*? Iris O.4 0.6 Eosmina IorM( estric 1.6 0.0 0.6 0.8 0.6 0.8 3.1 4.5 Chvceres r:-hw-icus 11.2 3.4 8.4 0.0 8.4 0.0 12.6
- 2.9 DacNa re teccurva 0.6 'O.8 0.6 0.8 Eubermica cere :ni 13.2 6.2 10.2 2.5 10.2 0.6 13.7 4.3 Unkrown Subtotal 26.4 10.1 19.8 0.8 19.8 2.5 29.4 5.9 PROTOZCA Centreth <rts sp.
Cimuoia sp. 6.4 1.1 3.6 1.7 5.4 0.3 13.7 4.3 Subtotal TOTAL 445.S 1.1 545.4 . 14.3 412.8 3.4 987.0 191.1 C. ta presert2d as no. o." c. gentsms/t arc
- compu*ec fecm 2 vert: cal tons w-th a
%Licerasin ;;terkton att (12 cm diametc r, 0.030 mm n sch) at cach scn pling staticn.
S.D. = Strnd.u-d Daviatten 1
.~. . , . . - ... n... _ . , _, . . . . . _ ._ ._ ____ . .
. .. - . . . ~ - - .. . . -
123 . TASLZ 32 A.'U-LYSIS OF ZCCPt.ANitTCN PC:3ULAT!CNS AT LCCUST PCINT* 19 Oct: car 1976 t.warv UM Statien S.O. ROTIFERA Asolanchra priece .t1 4.6 4.1 6 sp. O.3 0.9
. Bintleu=; huc;soni O.1 0.3 rirachionus ercu!2ris 0.3 0.5
& calyntflorus 10.2 7.9 L cier sicoraus 2.1 4.8 L havan=ensis 0.1 0.3 Conechilotdes sp. O.1 0.3 Kelticettia tomist i re 0.3 0.4 K? rata!:n cochten-is 1C2.0 57.0 15,. cuadrata 200.0 82.0 L serrulata 61.0 73.0 Pleoscrr a sp. O.1 0.3
& lenticulare 1.0 1.0 Pcivarthra slo, 195.0 72.0 Comchotyx sulects 7.0 22.0 Svechaeta spp. 109.0 40.0
~ Trichocerca cylied.aica 1.0 1.0 L multicMnus 1.0 1.0 Tr icnotria tet-actis 0.2 0.6 Unknown B 0.1 C.3 Subtotal . 681.0 2C9.0 COPEPCOA Calanoid Cccepods 1.8 0.5 Olcotomus siciloie,s 0.1 0.4 L - ter ora affiris 0.0 0.0 immal.uras, Catar.cid Ncuplit , Calancid 15.7 8.2 Cycicpold Cyc1cos bicu aicitus themact C.b.t. (immatures)
~
12.3 5.0 g" ver-na1i s 0.2 0.4 Sv. (immature) 3.8 3.0 Treoccycleos nrasinus 0.2 5.2 Naup tit , C, *poic 67.4 25.1
- Subtetal 105.3 21.9 CLACCCERA Alena afflHs 0.0 0.1 Posmina foretrest-is 1.9 1.S Chydor us schaeri us 10.8 E.O Ocphia retrocu. va 0.4 0.8
.- Eutnsmina corecent 12.1 2.2 Ur.kr.o .vn 0.0 0.1 Subtetst 25.9 11.8 PACTCZOA "
Centrechynis sp. Otfflugia ca. 10.9 12.4 Subtstat TOTAL v30.S 292.0 Data prssm ?d as no. Of org ntsrr.s/l anJ : mputed frem 2 vertical tcws wtth Wisconsto p;.:'4t09 ret (12 m dic. meter, 0."80 mm m.ssh) t.t each samoling staticn. S.D. = Sta-dsr d Ceviati:n
124 TABLE 33 ,
~
l 4 A.'u-l.'(CIO CT* 2CCPLA:MTCN PC;:ULAT:CNS AT LCCUST PO!NT* '
- 2 November 1976 t
i
' pp Station 1 Stcticn 3 i Stetics S l Ctaticn 8 i Mean tS.O. Mean 5.0. Mean S .O. I Mcan S.D.
ROTIFERA Asof ae.chrta (;iroidtt) 0.5 0.7 L prfecer.ta , 3.8 3.2 0.9 0.1 0.2 0.3 0.2 0.3 l Br achion;s calycirterus 10.5 4.2 5.3 0.2 3.8 0.6 3.9 1.2 B. d tvers tecer.us [ creos;aris 0.3 0.4 Cerocettotees sp. 0.8 1.1 0.2 0.3
' ~
Filints 10~;tseta O.8 1.1 L termiralis 0.2 0.3 0.0 0.2 Gasteceus stylifer O.3 0.4 l Kettieettia ter oisoins 1.5 0 1.0 1.4 1.4 0 0.9 0.6 i 'Keratetta c0thtearts 357.0 39.9 140.0 48.3 134.9 56.1 104.8 10.5 ! L cuadrata 392.3 162.8 162.2 33.9 168.8 71.7 116.0 4.5 L serrutats 15.0 10.5 8.4 2.2 7.2 1.9 4.5 1.5 Northeten ! ads 0.5 0.7 g scua.~ula Pteesema ter.ticulare 2.3 3.2 0.2 0.3 Polyerthra s::p. 59.3 13.7 "31.1 11.1 33.0 13.7 17.1 10.2 Synehssta spo. 306.8- 24.2 79.4 20.5 74.6 11.6 101.6 0.6 Trichoce~:a cytIndrica , 0.2 0.3 T. mutticcinus 0.5 0.7 Subtotal 1149.9 261.5 430.6 120.3 425.5 154.6 350.3 3.0 CCPEPCCA
- Calanoid Ccpepe::'s
. Dieptee us sflettoides 0.6 0.9 a
Limnocataeus erscrurus 0.2 0.3 Skistedit: crmus j or egersersis 0.7 1.0 0.2 0.3 Imma*ures , Calde.old 2.3 3.2 0.5 0.0 0.4 0.5 0.2' O.3 j Nauplit, Cala-cid 30.8 11.6 4.1 0.2 4.0 0.5 10.7 6.0 { Cycl 0pold C0ptpeds l Cycices M:vs=idatus
! tt emast_ 1.5 O O.2 0.3 0.4 0.5 10.9 18.2 (b; :Per-as!(tmmatures) 63.8 11.6 20.1 8.9 7.8 9.3 L verratis 3.8 1.1 0.3 0.4 0.4 0.5 1.7 1.8 C. ve-nalis (Immatures) 27.8 5.3 6.3 1.6 13.5 8.1 13.5 2.1 - ! Trocceyct os prestnus 1.5 2.1 -
] Nauptli, Cyclopold 174.0 4.2 44.4 14.1 43.0 15 . f., 70.9 9.9 Subtetat 306.3 1.1 75.9 24.6 78.2 33.5 116.4 29.8
- CLACCCERA' Sosmfra toneirostr is 7.5 2.i 3.2 0.9 1.6 0.8 10.5 8.7 Cnyceru: sehsert eus 12.8 3.2 1.0 0.7 1.t 1.5 1.7 0.6
[ Cannoia cu:ex 0.2 0.3 L e-*recurva O.6 0.9 0.6 0.9 Eubosmina cera;ent 16.5 8.4 7.7 1.8 3.8 0.6 8.6 2.4
- Subtetat . 36.8 7.4 13.0 1.3 6.5 2.9 21.6 6.3 PROTCZA j Diff!v'ia sp. 0.8 1.1 0.3 0.4 1.8 0.5 C.9 1.2 TOTAL 1492.5 263.3 5t9.7 146.7 512.0 191.5 489.0 31.9 Cata preser ted es ro. of organisms /t arc cemeuted fecm 2 vert
- cal tows with a
, Wisconsin plar.kten ret (12 cm dismator; O.CSO mm mach) at each samplit g station.
! S.D. = Stardsed Ceviation l a Sample no. 2 d!!uted 1:1 to altow accurate ecunting. - b Soth sar: O!cs dit: ted 1:1 to allow accurate counting. j -m***w....e-- -g% ...-e-. * + - **.* w -- -*"=*-~~='=s***-- * - *
, - r-w,= , -,-- - . - - = - , - . ~-.-,.,----e---- --,n--w-,- , - - , , . , . . - , , , - , -,,,m --
,.-vr - ~- - , - -
. . .. .. - - -- ~
125
. TABLE 33 -
6 S ANAL *,' SIS CF ZCCPLANKTON PCPULATIONS AT LCCUST' f.Qmi' 2 November 1976 T,.C<A _Pa tion 12 gentien 13 l pa:!cn 14 l Smicn 18 uean i S.o. Mean i s.o. Mean i s . o . i .v.ean s.o. ROTIFERA Asolanchra (giroidit) 6 crfedor.ta 4.5 2.1 0.8 0.0 1.5 0.4 1.0 1.6 Erschiceus calyciflorus 5.3 7.4 8.6 1.6 7.5 1.3 11.3 7.4
& d ivers(ccrr us
& ur ceolaris Ccn:chiloides sp. O.3 0.0 3.9 2.1 2.6 1.6 Filinii !cc:iset* O.6 0.0 L terminalis 0.8 1.1
,Gastectus sty!ifar-Kellice'-tia !crglacina 4.5 6.3 1.9 0.5 2.1 2.1 1.5 1.1 grate!!a cochlear is 257.8 1C8.2 126.8 15.8 121.5 0.8 118.1 11.0
$ cuadects 273.0 93.6 148.3 4.2 113.1 16.4 109.1 35.2 L sarrutata 27.0 16.3 3.0 3.2 3.9 4.6 3.0 1.1 N:rmolca lat(s N. scummuta 0.0 1.1 PIaose~a terticularo 0.8 0.0 0.3 0.4 Polver*hra spp. 78.8 45.2 22.5 8.4 27.9 2.9 21:8 6.3 Synchae .a spp. 163.5 77.7 108.4 10.0 107.1 14.7 118.5 39.9 Trido:crea cyttrdrica L muit'cr inus S;.btetal 824.8 309.8 431.6 23.6 389.4 26.0 388.5 105.0 COPEPCOA
- Cataneid Cepepods Diactemus siteitoides Limreenlar :s macrur uc 1.5 2.1 0.8 0.0 0.9 1.3 SMsto ientemus c rego.*en 3 is Imm atures , Cataneid 7.5 6.3 6.0 6.3 6.3 0.4 6.8 3.2 Naupit!, Ca!anold 5.3 7.4 7.1 5.8 6.9 5.5 10.5 5.3 Cyclopo!d Cepepeds Cyctecs bicuscidatus thomas t 3.0 2.1 0.4 0.5 1.2 1.7 2.3 1.1 Eb. t%masi(immatures) 26.3 17.9 18.4 2.6 17.7 1.3 16.1 2.6
-C. va.rratis 1.5 2.1 0.8 1.1 0.4 0.5 E vernalis (immat' res) 60.8 70.4 7.5 1.i 10.5 0.4 7.5 3.2 Trococyclocs er estnus 0.3 0.4 0. 4- 0.5 Nauptit , Cys cpoid 33.8 47.3 75.4 6.G 79.5 1.3 65.3 12.6 Sv5 total 138.0 37.8 116.3 13.7 123.3 8.8 109.2 27.8 CLACOCERA" Ecamira tergtrostris 12.8 7.4 8.3 1.1 9.3 1.3 4.5 4.2 Q veorus schste tcu 3.0 4.2 3.4 1.6 2.1 1.3 0.4 Cachmia pulex 0.5 O. retrecurva O.3 0.4 Eubosmir a coregoni 6.0 8.4 8.3 1.1 6.0 0.8 6.8 2.1 Suttotal 21.3 3.2 19.9 1.5 17.7 2.1 11.7 1.6 l PROTCZA Ciff!v;ta so. O.3 1.1 0.8 1.1 1.2 0.0 0.4 0.5 TOTAL 936.3 349.7 Sea . F. 9.5 528.6 37.0 512.2 135.2 Cata pecsen'.ed as no. ci" organicm:/t and cempuwd frem 2 vert: cal tows with a Wisecc. sin ptanAten r.et (12 cm diameter; O.CSC mm mesn) at each sampting station.
S.D. = Standsed C3viation a Sampic co. 2 cituted 1:1 to allow accur:te counttrg. b Ecth samples diluted 1:1 to allow accurata count!ng. l l ...- ....,p..- . . * .-.- -- - - - - "" " ' ~ * **'* " '
- 123 TAELE 33 ~
AIML*r*3*3 C.- ZCCFLAlvKTCN PCPULATIONS AT LCCUST POIN T ? 2 November
- 1976 T A M. _Sta t f en aca i Sbtion 27a i c;utta 250 l c- .* inn 29 I Mean tS.O. t Macn S.O. Mcan S.0.l74can S.O.
ROT!FERA Asolacch* 1 (gir oldll) d: Cr'od:rts, 1.3 0.6 1.8 1.1 0.4 0.6 1.0 1.4 er acnic t s calycif'or 9 9.6 4.5 9.0 0.6 3.4 1.2 11.9 7.2
& d iversicornus 1.9 0.9 3.1 1.6 0.9 1.2
~
3.3
& u-esotarts 0.2 0.3 Cct-ccnilo' dss sp.
Filinfa 1 rgiveta L term'rsiis Gas *rceus styttfer-Kettteo* tis lergisoin.m 1.1 0.3 3.1 1.6 1.3 1.8 1.7 0.5 Keratst:s cochlearis 1.59.4 25.2 116.6 1.3 86.1 11.4 152.4 2.4
$ curcests 149.4 48.9 129.1 19.7 130.3 13.2 145.9 1.0
$ seert lata 4.5 0.9 3.1 2.0 5.6 3.0 5.1 0.5 Nor *holta Iabis N. scuar uta O.4 0.6 1.0 1.4 Meosorra lenticulare 0.6 0.3 0.4 0.6 2.7 0.0 Polyarten spp. 34.7 7.8 29.3 8.1 32.1 1.8 40;6 3.3 Synebaeta spp. 92.6 13.2 112.6 4.3 105.4 6.0 166.7 32.9 Trichceerca cyttrecica 0.6 0.3 0.7 0.2 0.4 0.6
-T. reuttierarus O.4 0.6 0.9 0.0 Sudtstat 456.0 88.4 408.9 34.0 367.7 3.6 532.2 37.7 CCPEFCCA
- Catanold Ccpepods Ctactemus sitettoides 0.9 0.0 0.3 0.5 Lime:ctiar's maccurus 0.9 0.0 1.3 1.8 2.7 3.8 Swistedia:te .us crocc .=r. sis O.4 0.6 Immcess, Catar old 2.6 0.6 5.9 6.1 3.4 1.2 4.8 1.0 NaupIII, Catarold 1.7 0.0 6.3 3.2 5.6 3.0 5.8 5.3 Cyciccoid C:pepeds' Cyc'Oes b'curoidatus enemast 0.4 0.S 0.9 1.2 0.4 0.6 0.3 0.5 16; ther-esi(tmmstures) 7.5 10.5 22.7 6.6 5.1 1.2 14.7 1.4 C. vercalis 0.9 0.0 2.2 1.7 1.7 0.0 0.7 1.0 C. vern$111s (Immatures) 8.6 1.2 8. 0. . 2.0 2.6 1.2 6.8 3.8 Tr ecocye'::s cresfr.us Naupill, Cyclopold 53.6 6.6 62.3 8.0 48.0 4.8 77.4 16.7 S utt. tat 76.1 18.3 109.5 14.7 E8.1 4.2 113.5 19.6
' CLACOCERA*
Bosmina !c gir estr-is 4.3 1.2 7.3 1.8 3.4 0.0 4.8 1.0
,Chycorus schaerict.s 1.5 0.9 4.3 1.1 3.0 0.6 2.4 0.5
.C2=hnia puler C. retrecurva 0.9 1.2 0.7 1.0 Ebosmir a ceregoni 4.9 o 0.3 4.G O.8 5.6 3.0 5.8 1.4 S*ict: a t 10.7 1.3 16.2 3.8 12.9 2.5 13.7 0.9 PROTCZA Ciffh.rg-sp. 0.6 0.3 1.4 0.5 1.3 0.6 2.0 1.9 TO TAl_ ,543.4 66.6 535.9 53.0 450.0 9.7 661.4 20.9 "iata presence:: as no. cf ceganit.mc/t ce= c:mputed frem 2 vert: cst tows vitth a Wiscensin plcekt:n est (*2 cm ditmeter; O.C30 mm rrech) at ecch sampling station.
S.O. = Stan:ced Caviar;cn a Sar.ple no. 2 cituted 1:1 to allow cecurats cour-tf rg. b Ecth sarrples diluted 1:1 to allow eccurata ceurting.
* *e a. ,ee- + w- e,e w w, i w wm- m _
_-e
t taste 33 ANALYSIS CF ZCCPLAN'rtTCN PCPULATIONG AT LCCUST POINT
- 2 Novemt:er 1976 7 Mean/
} Station S.D. i ROTIFERA t Asplanchna (giroidII) 0.04 0.1 I *
& priecent3 1.5 1.4 Brachicnus es!ycifterus 7.5 3.1 Ba d iversicornuc
& ucceolaris 0.03 0.1 Conochiloides sp. 1.4 1.4 j Filir ta torgiseta 0.1 0.3
' L terminalis 0.2 0.3 Gastrcpus styttfer 0.03 0.1 Kelticottia 1 rciscina 1.8 1.0 , ] Keretetta cochtecris 157.1 77.5 l 5 quadrata 170.7 82.2 K. smarulata 7.8 6.9 Ncethog tabis 0.04 0.1 g scuan uta 0.2 0.4 P!ecs0ma ter.ticulare O.S 0.9 Polyarthra s;p. 35.7 17.3 l Synchaeta spp. 128.1 62.9
- Trichecerca cylirdrica 0.2 0.3 L multter inus 0.2 0.3 Subtctal 513.0 236.9 CCPEPCCA
- l. Calanold Ccpepods Diaotemus silclicidas 0.2 0.3 Lin rocatanus maerurus 0.7 0.8 Skistcdicetervus
!= crogenensis O.1 0.2 Immatures, Cala..oid 0.9 2.7 Nauptil, Calanoid 8.2 7.5 Cyclopoid Cepepods 1 Cycleos b;cusnidatus
- j themasi O.9 0.9 i C.b. tFon-asyimmatures) 20.1 15.0 i C. verr.alis 1.2 1.1 d
[ vematis (tmmctures) 14.5 15.9 , j Trecccycleos crcsicus 0.2 0.4 1, Naup tli, Cyc!cpold S9.4 36.0 v i Subtotal 119.2 62.7
- CLACCCERA*
eosmina longirestris 1.5 3.4 Chyceres scheericus 3.1 3.3 Capenia pute.< 0.00 0.06 g retrecutwa 0.3 0.3
- Eubosmina core;
- ni .7.1 3.3
$ Suttotal 16.9 7.9 l PROTCZA Difflucia sp. 1.0 0.5 TOTAL 650.0 300.0 f Cata preser.ted as no. of cepenisms/l and computed fr0m 2 vertical tows with a Wiscensin plamten..st (12 cm <Jiametar; O.C30 mm mesh) at each samplirg station. S.D. = S'ancard Ceviation a Sample no. 2 diluted 1:1 to allew acc rc .o ceunting. 1 b Boto samples citutad 1:1 to allow accu; c.te ecunting, a
* . a e a 9- ,-w-.- _ _ . - .- y -
r , -- , p ,-~,.7__-a, ._ . . _- y,y eem
^ '~' - -
126 APPENDIX C
. SENTHIC MACROINVERTEERATE POPULATIONS FROM LOCUST POINT, LAKE ERIE JULY - NOVEMBER 1976
.__ _ __ -_ ~__ _ _ _
129 I i l } , l TAELE y + l Aswmi.f mo vr oc.e4 e av av4.GsNviESTEhhTE PQr%: di Oiss AT LCOUST POINT
- 5 . JULY 1976 i
TAXA St"IIC' 1 I SlotIOP 3 I St@C" O I S'at
- 7 Mean S.O. Mean S .O. i Maan i S .O . i Menn 15. 0.
) s CCELENTERATA 1 Wer a sp. (tuccing polyp) 6.4 11.0 6.4 11.0 i Wdra sp. (single polyp) 6.4 11.0 6.4 11.0 Su:: total 12.7 11.0 12.7 22.1 1 ANNELIDA i Hirudinea Helebdalla s'aerstis ' 44.6 44.1 Ptaco': cella crcr tifers 6.4 11.0 Oltgechaeta Immatures (bate setae) Immatures (no hair setas) 82.8 55.1 3150.9 2745.7 1356.1 909.6 885.0 442.0 Branchtur a sewer but 6.4 11.0 25 5 29.2 63.7 61.4 38.2 19.1 d Lim.Mdettus cervix 12.7 22.1 S.4 11.0 l L 2 et cea red e la%s e.4 11.0 L a etacareds(an s-earv?x 6.4 11.0 L rneurtwarsis 19.1 19,1 La pt *urt caia h ude'<=mtanus OcMdona'.3 servnetes S.4 11.0 191.0 101.1 12.7 22.1 75.4 99.2 Petanv2- --ix n oldaviensis 12.7 11.0
^
Suttotal G5.5 50.5 2e20.1 2155.1 1451.S 956.2 1056.9 529.8 l ANTh90PCDA , Cladocera Le:todera kinditt 802.2 550.6 713.1 548.7 789.5 1205.8 1510.8 2328.0 Arrpetpcca Gam.- n us facetatus $.4 11.0 63.7 61.4 19.1 0.0 Isop-A a Ascllus -nitttsr-ts Ctptera-Cntt o .omidae l Chironomus 3 12.7 11.0 82.8 72.3 6.4 11.0 38.2 19.1 Chironomus cupa 11,0 3.4 Cry:tochtrer:mus sp. 12.7 22.1 19.1 19.1 08.2 19.1
! Gly;:tet:ndices p. ; Poiv=aditurn sp.
Pr0ciaOws sp. 6.4 11.0 6.4 11.0 Tara/ tarsus sp. Xenochiror omus sp. Ephemarcptera Caer.!s so. 12.7 11.0 6.4 11.0
, Subtetal 834.0 552.4 014.9 C09.2 878.6 1216.0 1725.4 2361.8 t.
i MOLLUSOA Pelecypoda l Larrost11s sp. TdTAL 533.3 3525.3 942.3 2571.8 2349.3 1.838.} 2782.2'2377.9 Cata presented as ec. of c ganisms/m 2ar d cornputed fecm 3 grabs with a Por.ar
! drec;e (A = 0.052m2) at 'each of 18 sampitr; stations ct Locust Point.
] S.D. = Star.dar d DeviaLen
.ee. ,mie,em m , mas .waw a m'.e** N** , -- , - , . - , .-- -.n ---.v--n-, ,, , - - - - - - , , , - - , , - , , , . , , , ,w, ,, ,-,n--,,7 --,,e.- , , , . - mv - - . . , ----,,_,e,--~y,,
130 TABLE 34 ~ ANALYSIS CF 6EmThiC ivM,i;utNvEftTE6fmT d t-CF vLM aCWtm AT LCCUST PCINT* 5 JULY 1976 Tm _sta tien a i statien s I g.ation 31 I Ration 12 Mean iS.O. Mean i S.O. l Mean i S.O. ! Mean i S.O. COELENTERATA Hydra sp. (budding polyp) S.4 11.0 S.4 11.0 6.4 11.0 5.4 11.0 Pvdt 2 sp. (sihgle polyp) 19.1 Subtetat 33.1 0.4 11.0 6.4 11.0 6.4 11.0 25.5 29.2 12.7 11.0 ANNELIDA Hirudinea Netebdetta s*a calls 6.4 11.0 P!.ac0bdeMa me-ttfera 0*4 II*O Otisoce.asta Immatures (hatr* setae) Immatures (r.o hair setae) 549.4 SS2.7 855.9 S29.S 171.9 66.2 394.7 Branch!ura soserbvi 19.1 115.1 33.1 31 8 33 8 Ltmr cdet tus c=mAu L. $03redsta us L claca-edei mavs-e=nvf x L meum==rus L a ccr'u.-J-;ccia b udeWemtseus Conid:nais seace-ttna 101.9 130.0 343.8 232.1 44.$ 39.8 270.4 134.9 Petar ethr-!x moldavtensis gy33g3t 783.1 S52.7 1230.0 g64.6 218.5 1C5.2 $30.3 182.2 ARTHROPCDA Clacocera Lectodoaa kirctti 935.9 723.6 1139.6 1510.3 Arrphsooda 700.3 421.2 623.9 525.3 Gammarus fasciatus 44.S 48.1 S.4 (sepeda 11.0 6.4 11.0 44.6 29.2 Asellus _m!!!ta.-is Ot ptera-Chiro: omidae Chiroaon us n. 25.5 11.0 S3.7 44.1 Chironemus :,;pa 6.4 11.0 C- me mmme us s:: . 31.8 11.0 12.7 22.1 G1ptetendtces sp. Polycedi um sp. 6.4 11.0 Preciacius sp. 19.1 _Tarvjtarsus sp. 19.1 Xenocrirorcr v;s so. Ephemerrotera 6.4 11.0 Caenis sp. S.4 11.0 19.1 19.1 Suttotat 1037.8 788.5 s.4 11.0 1254.2 1516.3 732.2 386.9 sa7.5 534.8 MCLLUSOA Pelecypoda Lemosilts sp. 6.4 11.0 6.4 11.0 T TAL 1833.6 6 8.3 2470.3 1830.4 . 974.1 236.5 1330.5 566.7 Data presented as no. of organisms /m2 2 and ccr puted from 3 gr abs with a Penar-
-dredge (A = 0.052m ) at ~each of 18 samptleg stations at Locust Polnc.
S.D. = Standard Deviation
131 T.se!_E 34 ANALYSIS C; SEI4ThlC iv%CRCIsiviENTEERATE i:CPUi ATICNS AT LCCUST PCIN T* 5 JULY 1970 TM Shtien 13 i Sintion 14 I Smtion 15 l St,- -:q 16 Mean iS.O. i tv".ean l S .O. j Mean l S . C . I Me.2n 1 S . O . COELENTERATA Hydra sp. (budding polyp) 12.7 11.0 Hyd a sp. (single polyo) Suttotat 12.7 11.0 ANN ELIDA Hirudicea belobdell.a s accalls S.4 11.0 Placct:d311a n ;ntifera S.4 11.0 Oligochaeta Immatures (h2tr setas) Immatures (ro bate setae) 292.9 3C7.4 1985.4 756.1 1155.1 794.2 312.0 148.4 , Brar:51.:ca sewertyi 12.7 11.0 Limnedritus cervix 12.7 22.1 0.4 11.0 L. claeared%enus 12.7 22.1 L . clacaredat am.s-cervix t_- maumeers ts 19.1 33.1 12.7 22.1 L. om"vedicot a L . ud&ami er >3 Sbiden t's serosrtir, 31.8 14.2 159.2 98.0 394.7 304.3 38.2 33.1 Potamet:-rix melda Asnsis - 127.3 171.2 25.5 11.C Suttotal 331.1 329.8 22C2.9 932.3 1757.3 1351.2 375.S 173.3 ARTFROPCDA Cladoceea Lectedern Med*tt 3775.4 1136.8 1413.4 1CG4.4 737.8 70.0 Amphice a 700.3 61.4 Gammeros far:8atus 6.4 ft.O S.4 11.0 6.4 11.0 1s0;cda As2Ilus m!11 tarts C;ptera-CP.iremmldae Chiranom>s so. 44.S 29.2 75.4 50.5 19.1 33.1 CNrono-rus cuoa Crvete:Mre omus sp. 6.4 11.0 19.1 19.1 44.6 St.4 19.1 33.1 Glyer:t**ct".es so. Polycecitu-. so. . 25.5 2G.2 108.2 171.2 Precladius sp. 19.1 19.1 Ta#sesus c=. 6.4 11.0 XenscPtro cm.ss sp. Ephemeroptera Caerts sp. S.4 11.0 Subterat 3794.5 1143.6 1528.0 1144.2 935.9 802.9 127.3 110.3 MOLLUSCA . Pelecycoda Lamositis sp.
~
TOTAL 4130.3 646.1 3730.9 2075.5 2548.5 1515.5 '9C . 2. 21.* 7 Cata press-tad as no. or emanisms/m2 ard computed recm 3 grabs with a Pener dredge (A = 0.CS2m2 ) c.t nach cf 18 sampling stattens at Locust Petr.t. S.O. = Sta.edard Deviction . . . . . - . . - _ . - - . . . . . - - - . -- -- - -~~ ~~~
W TAELE 34 ANALYGIS Or GCNTHIO .VACROINVr_m i wc.n- c_ r-CPULATICNS AT LCCUST PCINT* 5 .;ULY IG76 7m Section 17 i Station 18 Stnien 26 l gratien 27 Mean l S.O. I Mean S.0. Mean t S .O. } Mean 15.0. CO ELENTERATA Hydra sp. (budding polyp) R/dra sp. (stngle polyp) SuttercL ANNELIDA Hirudinea Helobds11a s+20na!!s 6.4 11.0 6.4 11.0 Placobdella martifera Cligcchaeta Immatures (hsir setae) Immatures (e,o hair setae) 343.8 116.2 2502.1 1175.7 331.1 316.4 5350.7 3585.0 Branchiura sewerevi 50.9 39.8 Limncdettus cervbc 44.6 29.2 L clacc r?de ta rus L 2 claca edetteus-cervix 12.7 11.0 L. msumsens:s 12.7 22.1 6.4 11.0 a pecfundtcet a L 12.7 11.0 L . ude'<e mt a ru s 31.8 29.2 Ehidenats sereerties 19.1 33.1 547.5 382.2 133.7 118.2 95.5 50.5 Potamethrix n.Oldaviensis 38.2 50.5 121.0 2G.2 19.1 19.1 75.4 83.3 gug:o.2g 401.1 163.2 3043.3 873.4 433.9 427.2 5679.1 38CG.3 ARTI-ROPCOA Cladocera LectoJora kt-ct!! 152.8 144.2 1394.3 1188.4 1114.2 1049.0 560.3 591.9 Arrpntpoda Gammams fasetatus 6.4 11.0 12.7 11.0 Isopeda Asellus milits-is 6.4 11.0 Ciptera-Chtror.omidae Chironemus so. 19.1 19.1 57.3 19.1 6.4 11.0 31.8 22.1 Chtecncmus cupa Crvetechirenemus so. 19.1 19.1 50.9 29.2 44.6 48.1 Glyototendices so. Polypeditum so. 967.7 1268.7 12.7 11.0 127.3 67.1 Prec tedi..e so. 12.7 22,1 12.7 22.1 Tanytarsus sp. 6.4 11.0 XenOONrorpus sp. Epnemeroptera Caents Op. Subtetal 1G1.0 144.2 2495.7 2404.3 1133.3 1033.0 795.8 678.1 MCLLUSCA Pelecypoda Lamositis so. 70'TAL 502.1 305.3 5539.0 3275. 1613.8 742.0 6494.0 4364.0 Cata presented as ro,. of organisms /m2 and computed fecm 3 gracc with a Ponar-dred;a (A = 0.052m') at each cf 18 sar*pling stations at Locust Point. S.D. = Standard Ceviation
133 TABLE 34 ANALYSIS OF SENTHIC MACRCINVERTEER TE POPULATICNS AT LCCUST PCINT
- 5 JULY 1976 TAM Station 29 St.a tion 29 Mean/ 5.0.
Mean S.O. Mean l S.O. Station CCELENTERATA Hvdra *sp. (budding polyp) 2.8 3.9 Pydra sp. (single polyp) 2.1 4.9 Suttetal 5.0 7.4 ANN ELIDA Hirsdices Patobdella stagnetis 3.0 10.5 Place della mee trera 1.1 2.5 Clig: chaeta Immatures (hair setae) Immaturas (no hair setaa) 1477.1 1234.0 955.0 325.8 1233.a 1332.6 Branchiura sowerbyt 13.8 20.2 Limrodrttus cervix 6.4 11.0 6.4 11.0 5.3 10.8 L claearedeianus 6.4 11.0 1.4 3.5 L. etaca-ede.3nus-cervix 1.8 4.5 C msumeansts 3.9 6.9 C crotc.dtcola S.4 11.0 1.1 3.3 L7 edeumtacus 1.9 7.5 k.54cena'.s sercerttra 140.1 108.6 210.1 101.1 156.5 149.5 Potamotbr tx moldaviersts 108.2 58.4 29.4 a5.7 Suttotat 1623.5 1357.7 1309.7 395.2 1416.8 1374.4 ART)-RC PCOA Ctadocera Le:tedora kirctit 8G7.7 6C6.4 471/1 327.7 992.5 604.1 Amphtpoda Gamma us fasciatus 6.4 11.0 13.1 18.5 Isopoda Asettus militants 0.5 1.6 Olptsca-Chironomidae i Chir oro.~us so. 101.9 06.1 140.1 88.2 40.7 3g.4 Chironemus 5pa 6.4 11.0 6.a 11.0 1.1 2.5 Cry to:Nrec=r us sp. 6.4 11.0 12.7 11.0 18.7 16.7 G1pteterdices sp. 0.5 1.6 Polyoecitum sp. 69.0 227.6 Proclad.us sp. 6.4 11.0 4.6 6.8 Tarvarsus so. 0.7 2.1 Xenochtronomus sp. 0.5 1.6 Ephemereptera Casmis sp. 3.2 5.5 Suttetat 1018.7 690.3 636.7 344.0 1145.6 853.3
. MCLLUSCA i Pelecypoda 1 Lan estils so. 0.7 2.1 l - TCTAL 2854.9 1944.4 1916.4 765.9 .2559.2 1614.s
- 2 cnd computed from 3 ;;rabs with a Osta Ponar passented dredge (A as no. of op)
= 0.052m ctanisms/m each of 18 sampling stations at Locust Poire.
S.O. = Standard Oeviatt:n l l --. n.-- - . . - . - ---. . . . . - - - - - - - -
134 TABLE 35 h!.^. LYSIS CF 2E. NTH C .V.^.CCO!.NVET'.TCCCATC PCPULATP.'!C AT LCCUST PCINT* 5 AUGUST 197G TA'? M Station 1 St ation 3 Sutien 6 l Statico 7 1 Mean tS.O. Mean S.D Maan l S .D. i Mean S.O. COELENTERATA Hydra sp. (single
- polyp)
Subtstat ANN EL!DA Pirudinea e Helcodalla eler.;ata l H. sr.a;nalis 19.t 33.1 PTace della mont1fera 12.7 22.1 Oli;cenneta , Immatures (hair setae) Immatures (no hate se'taa 210.1 73.4 7S.4 75.4 2304.7 2659.0 3972.8 5258.4 Branchiura sewertyi 12.7 22.1 229.2 3S4.4 ! Ltmncerttum ce vtx 38.2 53.5 , L. ciecarecetanus C clacarece tanus-cervix 6.4 11.0 11.0 I L7 meumeensis 12.7 6.4 11.0 L. prcfur.=; :ta . { ude,cemiar.us l C=hicor.ats ssecentir.s 178.3 193.2 63.7 55.1 452.0 624.g Potamothrix rroldaviensis 31.8 39.8 31.8{ 57.3 39.3 99.2 Subtotal - 388.4 293.5 152.8 144.2 2747.7 3522.3 4373.9 5937.9 . I ARTEROPCOA , Ctadocera
~
Le tedora kindtil 19.1 33.1 6.4 11.0 . 19.1 33.1 203.7 209.5 , Arrphtpoca } Cran;0nvx sp. ', 19.1 33.1 6.4 11.C ! Gammt.rus fasciatus 19.1 19.1 19.1 19.17 6.4 11.C 89.1 96.1 ! Olptera-C5trer.: micas
- Chireremus sp. 82.8 48.1 12.7 11.0 50.5 173.4 33.2 101.5 Chtrer.omus pupa 6.4 11.C Crvete,chtrenemus sp. 11.0 6.a Giyetstmeatoms so. 44.c 22.1 Polycecttum sp. 95.5 149.2 50.9 88.2 Pr:ctadius,sp. 12.7 11.0 165.5 286.7
- Proctsdius ~.;pa Tanyursus so. 12.7 22.1 s,4 11.0 Xenechtremmus sp. 6.4 11.0 19.1 33.1 EpMmeroptara Cannis_ sp. 12.7 22.1 6.4 11.0 Trichepte 4 Cheur.9atec syc' e so. 6.4 11.0 Subtotal 216.5 . 143.4 57.3 19.1 178.3 275.7 649.4 532.4 MOLLUSCA Pelecypeda Lamositts *u.
gumja sp. 12.7 22.1 Suttotal 12.7 22.1 TOTAL 598.5 293.0 210.1 107.7 9992.3 3731.2 SC23.3,0359.9,
- 2 Data presented as no[. of cegantemsha ord computed recm 3 grabs with a Penar dredg2 (A = 0.052m") at each of 10 sampi!rg stations at Lecust Point.
S.D.
- Standard Ceviatten
,. . . . . . . . . ye %. _ _*=
- r-
TASLE 35
, AM.^.LYSIC CF CC.*!T! :!C t..6. ORC!NVERTC.7.a.TC POPULAT:Ct!C AT LCCUST POINT
- 5 AUGUST 1976 g.fm Statien d I Station 's s*aric , 13 l Statien 12 -
.voan 1S.D. j u.can S.O. Mean i S.D.I;Aean S.O.
COELENTERATA Hydra sp. (single polyp) Subte:at - ANN ELIDA P(rudIr.es Helebdalla cice;nta 12.7 22.1 H. sta;nnlis 6.4 11.0 EacoccetLa montifera Cit;cenaeta Immatu6es (hair setne) Immt.tures (ro hair sotao 541.2 429.8 3750.0 1769.2 1133.3 570.6 681.2 473.4 Branchlura sowerbyl 12.7 11.0 6.4 11.0 Ltmrcdctius ceavtx 6.4 11.0 53.9 72.3 57.3 38.2 L. clacarece isnus 25.5 22.1 6.4 11.0 C ctacaredetarus-cervix L7 maurreensis 6.4 11.0 12.7 22.1 6.4 11.0 L. crcrundicola 6.4 11.0 C ;cei<cmiar.us 3.4 11.0 6.4 11.0 Olhicenais seccantina 6.4 11.0 375.6 430.0 25.5 1'1. 0 25.5 29.2 Pcturrothetx mcldaviensis 38.2 38.2 19.1 0.0 57.3 57.3 Subtetat 560.3 444.8 4189.3 2132.2 12SS.1 675.9 846.8 606.5 ARTHRCPCDA Cladocera Leptocora kir ctti 178.3 44.1 388.4 86.1 31.8 29.2 216.5 196.0 Ampatcxxfa Cranger.vx so. Gammarus fasciatus 6.4 11.0 140.1 242.6 6.4 11.0 Cipters-Chironcmidae Chironcmus sp. 6.4 11.0 31.8 39.9 19.1 19.1 57.3 33.1 Chironomus p.upa Cryotechirar.crrus sp. 6.4 11.0 12.7 22.1 , 6.4 11.0 Gly-tecencices sp. Polycecitum sp. 44.6 39.9 25.5 11.0 57.3 83.3 P-ectcetus so, S.4 11.0 133.7- 83.3 178.3 154.4 44.6 61.4 Proctacius pups 6.4 11.0 12.7 22.1 Tarytarsus sp. Xerechircrc.reus sp. 12.7 22.1 Cor emercptara Caenis sp. 6.4 11.0 38.2 66.1 19.1 19.1' Tricho.ctera CheumatonsvcPe sp. 6.4 11.0 Subtotal 197.4 48.1 S17.6 29.2 464.8 195.1 420.2 238.6 MCLLUSCA Polecypeda Lamocitis sp. Licumia sp. Suetotat TCTAL 757.6 435.7 2006.8 2154.4 1750.S 5E4.8 1267.0 793.8 l Cata ; reser. tad as no' 2
. of crganisms/m2 ard cceputed from 3 grabs with a Pccar- l dredge ({\ = 0.052m ) at occh of IG sampile.g ctations at Lccust Point.
I S.D. = Standard Ceviation l
. .,, .. . .o.- - .- e * * * *
.- _ = . - .. - - . _ -
i 13e TASLE 35
.^JMLYSIC CF OC.NTI::C f/.aOnC:.NYCRTCC.7 ATE !:C::t,;LAT:Ct:S
. AT LCCUST PCINT*
5 AUGUST 1976 4 g,, Stetion 13 c:a cion. 14 Swien 15 i Statien 16 Mean S.O. tican l S.D. .v.ean i S.D. Mean S.O. CCELEMTERATA l Hyden so. (single polyp) 6.4 11.0 Subte:at , 6.4 11.0 l ANNELIDA I j Hirudinea i ( i Peletdalla storgata 6.4 11.0 H. s:a;ratts l. PTaccocotta montifera Citg craa.a
, Imtratu es (hair setae)
Imms.tures (no hair setas , 923.2 789.9 4379.5 3802.2 1808.1 1483.2 191.0 99.2
; B ancht ur a sowerby. 57.3 50.5 6.4 11.0 1 Lim..ccritus ce vix 19.1 33.1 95.5 119.3 44.S 48.1
-L. clapar e se e..us 12.7 22.1 6.4 11.0 Q c!acarede.arus-cervix 6.4 11.0
-L. rnaumeensts 25.5 22.1 19.1 33.1 L. Profundicola 6.4 11.0 6.4 11.0 C ude<errf erus 6.4 11.0 OphiderMs sarpantina 12.7 22.1 25.5 22.1 184.6 287.3 827.7 563.5 Pota r.cthetx moldaviensis 12.7 22.1 6.4 11.0 146.4 135.5 S3.7 79.5 974.1 878.0 GOS.7 ,3888.7 2223.3 4
Sutt=tal 1832.2 1082.3 729.9 l ART!-RCPCOA j Cladocer a Lectedora kire.it 878.6 1323.8 916.8 184.2 401.1 11G.2 121.0 90.3 Ampr.ipoda Crango M so. i Gammarus faselatus 6.4 11.0 j Ciptera-Chtrommicae Chironorrt.rs sp. 57.3 99.2 38.2 33.1 2S7.4 281.4 6.4 11.0 Chironomus cupa 6.4 11.0 6.4 11.0 6.4 11.0
. Crave:::htr of craus sp. 6.4 11.0 S.4 11.0 19.1 33.1 Gly:::tse.: ices sp.
Poly ccitum op. 6.4 11.0 25.5 22.1 Proc ndtus sp. 159.2 138.2 165.5 154.4 152.8 144.2 Pecctscius cupa 19.1 19.1 6.4 11.0 Tarrgarsus so. 6.4 11.0 Xence' niromr- .:s sp. Ep.M merco. era Caenis sp. ' { , Tricrcptera i Cheumatoosvchi sp. Subtotal 1120.5 1513.8 1146.0 296.5 G34.0 476.5 176.8 103.7 MCLLUSCA Pelecy;;cda Lamscitis ss. .
; Lipum:a sp.
Sut:otat i TOTAL l2101.0 2398.9 lF)S7.4 4173.7 3062.4 2211.7 1250.6, 757.5 l- Osta presented an ro' of organisms /m2 and cor: puted from 3 gr abs with a Poner-dredge (A = 0.052m2) et acch of'13 sampling 2:z.ttons at Lccus Poir t, S.O. = Sta.tdard 09v!ation l P } . I I
. . _ . . - , _ . . - - - ~ . -- ---
-- ~ -- -~ ~~~ ~-~' ~~
.- ,. n -,, , - - - - , - - , . , , - - , , - - .-,w------ , - --
i 137 4 TASLE 35
.a.N.a. LYSIS C.c CCMTI-!!C V.^.CCCI.WCRTCCUATE PCIU*- ATIC.NC AT LCCUST PCINT*
5 AUGUST 1G7S 7g __Sta t ion 17 Station 18 S*ntien 25 i statien 27 ' Mean iS.O. tAcan S.D. Mean i S.C. Mean lS.D. CO ELENTERATA 4 Hydes sp. (single polyp) Subtocat * ) ANNEL!CA Hirucinea a i Helot:della clon;sta ! H. sta;r. alls ' e I Placcoco!!a ment!? era 6.4 11.0 Cligoer.aeta . immatur es Q-air setae) i j Immatures (no hair setae . 133.7 50.5 1833.6 1507.7 802.2 92C.1 4380.3 672.7 i f Branch tura sowerbyl
! Limnedratus cervtx 6.4 11.0 19.1 19.1 12.7 .11.0 l h claparedater us ! ! L. clacareceianus-cervix '
C maum*aasis 12*7 22 1 I L7 profundic0ta 12.7 11.C l L. ucaxomiccus 44.6 61.4 I C7hiconais secoentina 776.7 444.8 1254.4 1420.1 76.4 66.2 452.C 410.7 - 140.8 22.1 Potamothrix metcaviensis 25.5 11.0 254.7 12.7 44.6 29.2 Subtetat 942.3 452.5 3451.6 2971.G 837.7 SG9.1 4889.6 450.4 t ARTi-ROPCDA t Cladocera . ! j Lect:dora kiratil 668.5 689.5 89.1 39.8 165.5 220.5 337.4 188.4
- Amphipoca j
! Cran;crr.m sp.
- Gamerarus fasciatus
- Diptera-Chiron micae
- Chironomus sp. 12.7 11.0 184.6 154.4 38.2 50.5 50.9 39.8 l*
1 Chtrcr :mus pupa 6.4 11.0 Cryo centrortmus sp. 12.7 11.0 12.7 11.C 12.7 11.0 i Glyototendices sp. l. Polycedilum so. G5.5 50.5 407.5 593.7 Prc:!stius so. 25.5 22.1 82.8 98.0
-Proctacius pupa Tany arsus sp. 6.4 11.0 12.7 22.1 19.1 33.1 114.6 38.2 Xerechtronorrus sp.
Epnemeroptera Caents sp. Trtchcoteca Cheumatoosyche sp. Subtotat 795.8 705.5 732.2 653.5 222.8 202.4 504.8 171.2 M.CLLUSCA Pelecypoda Lames!1ts sp. 6.4 11.0 Lt Jumia so. . Subtocat 6.4 11.0 TCTAL 1708.1 988.2 41S3.8 35G6.1 1126.9 1025.5 5494.4 330.6 Data pecsonted as no'. of org:ninmn/m2 ard ccmputed from 3 ';rabs with a Penar-dredge (A = 0.052m-) at dach cf 18 sampling str.ttons at Lecust point, S.D. = Standard C.sviation I i
. .%. ...u.. . we. e . . e.e+e*+* -m - - - * * * " * *
- w- t ,
.-p.--w * -p,-
w 3-ea g,y .um , - - - ---%y --- g-p g g p.y -r me.----- ----.v--- cs.. , . . ,, +m-e - *-
l 138 i TAGLE 35 ANALYSIS Of: BENTHIC MACRCINVER,TESRATE POPULATIONS AT LCCUST POINT
- j 5 AUGUST 1975 i
28 Mean/ Th Steien Mean S.D. Statien 29 Mean S.O. Station S.D. l COELENTERATA , Hydra so. (single polyp) 0.4 1.5 Suctotat 0.4 1.5 f
- ANNELICA Hirudinea
- Heloddetta elengata 1.1 3.3 H. stagnatts 1.4 4.7 PTaccccetta montifers t.1 3.3 j Cit;censeta l
Immatur'es (hair setae)
- immatures (no bair setae .3387.1 1728.6 1464.3 662.3 1792.9 1576.8 Br-anch tura sowerbyt 63.7 48.1 21.6 55.3
. Ltmnedrttus cervix 31.8 39.8 ' 38.2 19.1 23.3 26.7 L. clacar ecetanus .7 3.0 C clacaradetar us-cervtx .7 2.1 C' maume+ nsts 5.7 7.8 L. Profur-dicola 3.7 3.7 C udekemiacus 12.7 11.0 4.3 10.7 Olhidonais serpartirsa 121.C 209.5 845.8 355.5 313.7 375.2 j Potamothr ix motcaviensis 31.0 29.2 19.1 33.1 45.6 62.6
- Subtotat 3571.7 1852.9 2317.4 993.0 2211.6 1642.7
*ARTHRCPCDA Cladocera Lectodora kindtti .,420.2 433.9 502.8 287.4 309.1 283.5 Ampolpoca j Cr amporyx sp. .7 3.0 Gammaeus fasciatus 6.4 11.0 16.0 37.2 Diptera-Chir onomicae Chironomus so. 31.6 55.1 63.7 61.4 61.2 65.8 Chtrer omus pupa 6.4 11.0 2.1 3.1 Cryctochirenen us sp. 12.7 11.0 6.4 6.2 Glyctotendioet sp. 2.5 10.5 Polyceditum sp. 394.7 226.3 66.8 125.8 Prceladius sp. 165.5 124.3 71.5 76.3 Procladius pupa 2.5 5.4 Tanytarsus so. 25.5 29.2 11.3 26.8 i
4 Xencchiroromus sp. 6.4 11.0 2.5 5.4 I Ephemeroptara Caents sp. 4.6 10.0 Tricheptera Cheumstopsycha sp. 7 2.1 Suttotal 617.6 468.0 1018.7 452.9 559.5 341.4 e MOLLUSCA Ps'ecypoda Lamosills so. 4 1.5 Ligumia sp. .7 3.0 Subtetat 1.1 33 TOTAL 4252.G 2425.7 33GS.8 1MS.2 2751.9 1835.9 i Data ;:r esented as no. of orgrinisms/m 2 and comcuted frem 3 grabs with a I Porut dr'adge (A-0.052m ) at each of 13 sampitt g stations at Locust Point. i S.D. = Standar d Daviation I i I e * ** e w egu-w .me. m - =- e es,- - 3- e e = = ,e um. e - --asa .ee. a
,,.,,..y _ _ , _ ... , _ . , ,,, ---------_.,-..----,m., , , . . _ . , , _ . . - -y_ , , _ ~ _ . , - _ - - - . - - . , -,_.m. ., , -..- ,,.
139 TAeLE 36 ANAL.YSIS Cf BENTHIC MACT,:0:NvERTEERX1 ti PC Put.AT ICN S AT LCCUST POINT
- 3 September 1976
. Tm _Shtien 1 I Station 3 S% eten 6 lsmet~t _7 Mean S.O. Mean l S.D. Mcan S . O . I Mean . .O.
CCZLENTERATA - Hydra sp. (budifing polyp) Hydra sp. (single polyp) 6.4 11.C 11.0
~
Sutt tal 6.4 ANN ELICA Hirudinea Cina sp. HelcSdella s*1;nalis 6.4 11.C Placebcalia mont: fora 6.4 11.C Citgcchseta Immatures (hair setae) Immatures (no hair setae) 114.6 57.3 904.1 1095.6 2674.0 298.4 3527.1 3034.2 Braccht urs seuertvt 12.7 22.1 19.1 19.1 121.0 105.2 Ltmr :ccllus cervix 12.7 22.1 44.6 29.2 19.1 33.1 L. ciccareda#,nus 6.4 11.0 6.4 11.0 L. clacerede tanus_ce. vtw L7 me.umnesis 12.7 22.1 12.7 11.0 L.- cree.r-dicola L. ude:<emtar.us 6.4 11.0 C35ico.m ats se-certina 95.5 65.2 267.4 307.4 324.7 229.2 165.5 204.2 Potamathr!E ' mold aviensis 6.4 11.0 44.5 39.8 19.1 33.1 Suttote.t 210.1 132.3 1216.0 1462.7 3132.5 183.5 3858.2 3373.5 ART:- RCPCOA Cladscera Lectodora kiretil 203.7 191.3 1095.1 801.6 214.8 195.4 458.4 414.5 Ar- pr.ipoda Crara:re/x ro. 6.4 11.0 12.7 11.0 Garr.ma us fasciatus 31.8 55.1 31.3 55.1 50.9 58.4 Otetera-Chlecr.:mtd2e Chirer or- us sp. 12.7 22.0 13 . 7 29.2 38.2 33.1 44.6 39.8 Chirerservus : ca 12.7 22.0 6.4 11.0 12.7 22.0 Cryptos.trer:- s sp. 89,,1 55.1 89.1 72.3 Cryptochirocomus euca Giv:t:tancMos sp. 70.0 67.1 38.2 66.2 25.5 44.1 Pebe*+1om ep. 50.9 44.1 19.1 19.1 Preetadtur. sp. 25.5 44.1 S.4 11.0 Procladius euca 6.4 11.0 Tanyaterus sp. 25.5 44.1 57.3 33 .1 178.3 308.6 Tanvtar us pupa Xtacchircremus sp. Ephamereptera Ceents sp. 6.4 11.0 6.4 11.0 Trichaptar a Chaumateosycha sp. 6.4 11.0 Subtetat 209.2 254.3 1324.4 610.3 488.5 121.5 885.0 783.4 MCLLUSCA Pelecypoda Imms tucos 6.4 11.0 Su= total 6.4 11.0 TOT,SL 509.3 210.4,2540.4 j 555.4 3G27.4 193.S;4755.0 3c83.4 Data preserted as no. cl* caganisms/m and computed frcm 3 grabs with a P0nar cred;2 (A = 0.352m2) at **ch cf 18 samcitr9 stattor's at Locust Poir.t. S.O . = Star.dmed Ceviation t l
TAGLE 3e . ANALYSLS CF BENTHIC .WC.7CINVERTE3 RATE PCPULATICNS AT LCCUST POINT
- 3 September 1976 TM SSIIE" 8 ! b*iC" i Sht f"' 11 Shti n 1 M:en '
S.O. lMaan l S.O. I Mean S.O. Mean__ S.O. CCELENT N TA P/dra sp. (t;udding polyp) 12.7 11.0 Hyden sp. (singt a polyp) 6.4 11.0 Su::tetst 12.7 11.0 6.4 11.0 ANN ELICA Hirudirea Olns sp. 6.4 11.C Helcbastia stagnalis Pincobds!!a mon .ifera. Oligochaets 178.3 22.1 3577.1 1722.9 5220.7 1452.5 1273.3 1227.4 Immatur es (hale setae) Immstures (ro bair setas? 33.2 19.1 19.1 19.1 Branchiura sev.erbyt Lime.edritu s carvix 6.4 11.0 178.3 39.8 clacared si a-us 44.E. 39.6 L.- 6.4 11.C L. claor cedv aru s-cervix 38.2 0.0 t2 maumnesis L.- Oroft.tncicola 6.4 11.0 L. udekem!arus 50.9 43.1 Cghtdorais ser ertina 31.8 23.2 6.4 11.0 203.7 177.5 Potamomet:e me dsviersis 25.5 11.0 12.7 11.0 12.7 22.0 184.7 29.2 3640.8 1737.4 56C2.8 1428.3 1500.8 1430.7 Sub*ctal ARTHROPCOA Cladocera Lestedera kiMitt 2542.2 2158.4 935.9 948.7 S3.7 29.2 617.6 229.5 Am;Neoda Cear~=r.ye s >. Gamma: as fasciatus 6.4 1*.O 6.4 11.0 6.4 11.0 6.4 11.0 Diptera-CNrnn midae Chir:ncrn.:s sp. 31.8 39.3 89.1 22.0 12.7 11.0 6.4 11.0 Chirce.0mus r uon 6.4 11.0 C_ryo: chi ~:r:mus sp. 19.1 33.1 6.4 11.0 70.0 67.1 25.5 29.2 Crv=t: chi cremus cuos G;y 'Ots.rdices sp. Pehmedi:um sp. G.4 11.0 407.5 67.1 63.7 110.3 Procladiec sp. 12.7 22.0 50.9 11.0 50.9 11.0 6.4 11.0 Procladius cura Tarvtsr**;s sp. 75.4 57.3 401.1 430.8 33.2 GS.2 33.2 39.2 Tarytarsus puma 31.8 39.8 Xence:*ircromus sp. Ep.%mercptara Caanis cp. Tric.".:ptera Cheurr.$1toowcM sp. ' Sut*ctat 2795.0 2255.5 1528.0 813.0 Se.9 . 4 95.5 764.2 291.6 VOLLUSCA Pelocypoda immatures Swbtotal TOTAL 2G?2.4 23's.' 5175.2 3065.4 6252.2 1343.2 2272.0 1741.9 o Cata preser.ted as no. Of organisms /m a-d computed from 3 grabs with a Penar dred;;s (A = 0.052m2) at cach of 18 sampling stations at Locust Point. S.O. = Standard Ocviatten
I _g.p . _ . . . . .. . . . . . . TABLE 36 ANALYSIS Of SENTHIC MACRCtNVERTEERATE POPULATICNS AT LCCUST PCINT* 3 Septemoer 1973 4' TM 3ggen 13 l Se n 14 sute 15 i s.eeren 16 Mean S.O. I "een i S.O. Mann S .O. I Mean .S.O. CCELENTERATA Hydra so. (budding polyp) 6.4 11.C Hycra so. (single polyp) Subtotal
~
6.4 11.0 ANNELIDA Hirt dtnea Cirs sp. Heloddella sinenalls Placobdella merttfera Oligochaeta Irrmatures (hate seae) 254.7 110.3 Immatures (no hate swie) 757.E 1064.5 1935.5 376.9 2572.1 2555.2 292.9 210.4 Scanch tura sower %t 6.4 11.0 6.4 11.C 6.4 11.0 Limecertiu s cervix 12.7 22.1 31.8 29.2 L2 clacarsde anus 6.4 11.0 L 2 cle :arece anus-ceevtx 6.4 11.0 L a rraurneersis 63.7 94.2 pro.b d;cota L] scawemtarus 6.4 11.0 Cphidensis ssecerting 152.8 99.2 592.1 450.4 25.5 29.2 1521.6 596.5 Petametretx moldavi?rsts 6.4 11.0 25.5 44.1 31.8 29.2 Suttotat 916.8 1016.6 2783.7 575.2 2718.72812.2 1890.9 929.1 ARTI ~RO PCOA Cladocsra Le=tecora ktreelt 2629.4 1020.1 1502.5 11S2.7 350.2 55.1 236.5 597.4 Art.phipeda Cear9eryx sp. Gamma v fasef etus 25.5 11.0 19.1 33.1 i O!ptera-Chircr.cmidae Ch!renemus sp. 12.7 22.0 12.7 22.0 12.7 11.0 19.1 33.1 Chiron:mus ovea Cryctechtren:mus sp. 12.7 11.0 6.4 11.0 44.E 61.4 146.4 79.5 Cryctocht-enemus poca 6.4 11.0 Glyptetee'ces sp. Poly ccitum sp. 6.4 11.0 19.1 33.1 19.1
- 33.1 Proctadius so. 38.2 t:6.2 44.6 22.0 216.5 260.7 Preciadtus cura 6.4 11.0 4
Tar.vtarsus so. 140.1 72.3 95.5 19.1 57.3 66.2 6.4 11.0 Tarv aarsus pupa 6.4 1i.0 Xerocht-cromus sp. Ephemeroptara Caents sp. 6.4 11.0 TricN; tera
. Cheumsteosyche sp.
Subtotal 2877.8 959.7 1687.2 1197.3 706.8 317.9 477.5 436.3 u0LLUSOA Pelecypoda Immaires . Subtotal TOTAL 3704.0 1784.0 4475.9 1579.5 5431.9 3051.2 2368.4 1369.3 Data presanted as no. cf organisms /m and computed from 3 grabs with a Ponar dred;a (A = 0.052m2) at each of 13 sampiir; stations at Locust Pole.t. S.D. = Standard Caviation
----- - ~ ~ '
. , _ _ . _ _,,c__
142 - TASLC 3S ANALYSIS CF BENTHIC MACRCINVERTESRATE FCPULATICNS AT LCCUST POINT
- 3 September 1976 Tm s ti n 1 i statien 18 t i e., 25 i %tten 27 Mean S.O. IMean S.D. Mean i S .O . I Moan . S .0.
COELENTERATA
>+ydra 53. (bu !alng polyp) bydra sp. (single polyp)
Subtotal ANN ELICA Hirudirea Dina sp. Helebdolla stagralls Placetdella monttroca Oligocraeta Immatures (hair setae) 6.4 11.0 Imer.abres (no bair setae) 1139.6 339.7 4227.5 2193.8 1897.3 1385.3 3613.3 4073.7 Eranch n.:rs sowerby( 6.4 11.0 50.9 29.2 Lim Odrilu s cervtx 19.1 33.1 70.0 44.1 19.1 33.1 12.7 11.0 L. clacareda ian-s 12.7 11.0 L. claearecetanus-carvtx L ' mtum2 e rs .s 6.4 11.0 L. prcruretcola 6.4 11.0 L. udeWemieJs $0.0 11.0 19.1 19.1 Cohicenals ser ertina 916.8 220.3 783.1 413.2 50.9 89.2 Potamothrix rro;dsviensis 25.5 22.0 38.2 33.1 12.7 11.0 Subtotal 2181.0 362.9 5108.8 2513.4 1999.2 1432.7 3599.0 4126.7 ARTFROFCCA Cladocera Leotedorm kirdtti 528.4 177.5 89.1 108.6 362.9 248.3 382.0 491.' Amphipoda Cear;0nv e sp. Gamm=1rus _ c!ats 12.7 11.0 Ot; tera-Chironomicae Chireremus sp. 19.1 19.1 108.2 155.6 Chireremus cues Cryctechtrenemus sp. 108.2 44.1 69.1 29.2 38.2 33.1 6.4 11.0 Cryotechiren:mus poca Glyet:terdices sp. Polyetettum sp. 76.4 19.1 267.4 281 4 Proclacias sp. 19.1 33.1 70.0 90.3 261.0 249.3 Preciadus puas 6.4 11.0 6.4 11.0 Tarvtarsus sp. 44.6 61.4 Tarytarsus pupa
- 6.4 11.0 Xene:hlrortmus so. 101.9 44.1 Cphemeroptera Caer!s sp.
Trichoptera Cheur ateosycha sp. Subtotst 713.0 200.6 579.3 329.3 547.S 235.7 764.0 830.6 MOLLUSCA Pelecypeda Immatures subtstal TOT 4.L 2814.0 491.2 p758.1 p40.3 2545.8 16C5.5 "463.0 4944.3
- 2 Cata presanted as no. of organisms /m ard ccmputed from 3 grucs with a Penar dred;c (A = 0.052m2) at each of 1G sarrpileg stations at Locust Poir.:.
S.O. = Standard Ceviation 1 1
143 TABLE 36 ANALYS!S Ci SENTHIC MACRCINVCATESRA*"E PCPULAT!CNS AT LOCUST PCINT
- 3 Septen ter- 197S
.g.gyj mtien d I statten 23 lMean/ 5.0.
Mac, e s.o . wean s . o . istation COELENTERATA Hydeg sp. (buddirg polyp) 1.1 3.0 kJ,' sp. (strqle polyp) 0.7 2.1 Subte t 1.3 3.7 ANN ELIOA Hirudinea Olns sp. O.4 1.5 Helotdatta stagrutts 0.4 1.5 Ptmectdella morttfora 0.4 1.5 Citgochaeta Immatures (Nitr cetae) . 14.5 00.0 Immatures (ao hate setae; 6270.9 2026.9 1381.6 43.1 2008.9 178S.7 Brancht tira cowerbyt 11 a& . 6 19.1 12.7 11.0 23.0 37.2 Ltmnedri*u s cervix 31.9 29.2 63.7 44.1 29.0 42.9 L. etnoaredeise us 12.7 11.0 5.0 10.8 L 2 clacaredetent s-:ervix 0.7 2.1 L. reaumeensis 6.4 11.0 38.2 19.1 9.9 18.2 L. pr0*undlcota 0.7 2.1 t7. udewemtar us 25.5 29.2 82.8 29.2 13.4 24.1 C3riderais serce-tina 127.3 188.4 25.5 29.2 293.9 410.5
, Petamethrf w meldavtensis 6.4 11.0 19.1 0.0 15.9 13.7 St ttetal 65B2.9 2211.9 1633.0 29.2 2715.3 1799.9 ARTHFCPCOA Clad:cera Le:tedom kinetti 652.1 154.4 140.1 67.1 731.4 783.3 AmpNpoda Crar9enyx sp. 1.1 3.3 Garrmar us ,fas:tetus 6.4 11.0 0.4 11.0 11.7 14.5 Diptera-CNecc.omidae Ch' enomus sp. 114.3 57.3 70.0 72.3 37.1 36.8 CNecncmus e.uca 2.1.
4.4
- Crveteentrerc.n us sp. 50.9 48.1 31.8 22.0 4S.3 43.1 Crict cNrcromus cuca 0.4 1.5 G!yet ;ter dtoes sp. 7.4 18.3 Polyc. ditum sp. 31.8 29.2 44.6 22.0 SS.2 107.7 Precind!us sp. 203.7 171.2 31.8 39.8 57.7 81.3 Precladius cura 6.4 11.0 6.4 11.0 2.1 3.1 Tarwtarsus so. 127.3 108.4 71.5 98.1 Targarsus ;:c;:a 6.4 11.0 12.8 12.7 XcMcNeoremus cp. 5.7 24.0 Ephemaropter a Ca enis sp . 1.1 0.9 Tricho; tera Cheumataosyche sp. O.4 1.5 Suttetal 1209.6 245.0 331.1 29.2 1034.9 763.0 M.0LLUSCA Pete:ypoda Immatures O.4 1.5 Subtetal O.4 1.5 TOTAL 77'2.5,2357.1 1967.4 19.1 37"2.S 1733.S Data prest.nted as ao. or' cr3:nisms/m and ccmsttsc from 3 ;rabs with a Ponar-dredge. (A = 0.052rry at car.h of 18 sampling st:.ttons at Locust Pote.c.
S.O. = Standard Oeviation - _ _ . . . . . .- - . - . - . . . . ~ . .. - . . . . . - - - - - - . . , - - - ~ - . - - -
_ .-.e. .. __. - M4 TABLE 37 ANALYSIS CI SENTHIC MACRCINVERTEGRATE PCPULAT!CNS AT LOCUST POINT.* 5 Octooer 1976 Sta tion 1 1 Swien 3 i StatM n 6 i g egen_ 7 i 7g Mesn iS.O. I .va tn S.O. Maan S .O . I Mean i S.O. COELENTERATA Hydra so. (strv;te po'.yp) 19.1 19.1 70.0 89.2 44.6 77.2 Wara sp (budd!r.g polyp) 6.4 11.0 19.1 19.1 19.1 19.1 19.1 19.1 Subtotal 25.5 22.1 19.1 19.1 89.1 105.2 S3.7 94.2 ANNELIDA Hirudinea Hetobdalla eloresta Placcocotta morttfora 6.4 11.0 Ot!goetueta Immature (hair setae) 12.7 22.0 Immature (no hate setae) 178.3 143.4 1635.2 1429.6 171.9 163.2 3794.5 3678.1 Branchtura sower 5A 38.2 33.1 6.4 11.0 95.5 68.9 L.mnocettus cervix 12.7 22.0 L. ctscaradalarus 6.4 11.0 b clacar ecstarus-cervix L. maumeenst s 19.1 33.1 b udaktminnsus L. profundiccia Ochtdonats sareertina 133.7 119.3 17;.9 156.3 12.7 11.0 121.0 162.4 Potamotnrix moldaviensis SubtotcL 312.0 241.8 1859.0 1468.6 191.0 152.8 4042.8 3723.7 ARTERCPCCA Cladocera Leptodora kir dtil 12.7 22.C 31.8 30.8 12.7 11.0 57.3 50.5 Amphipoca Gammarus fascic*us 57.3 83.3 70.0 77.2 Isopoda Asellus millures Diptera (Chleenemtdae) Chirenorrus sp. 6.4 11.0 23.7 13.5 121.0 111.9 Cryo o ni. eno- us sp. 31.8 55.1 95.5 76.4 Glyst:terdices sp. 127.3 138.2 50.9 11.0 Polyoectlum sp. 6.4 11.0 Procladtus so. 6.4 11.0 23.5 44.1 Procladiuo scose Tanytarsus sp. 57.3 0.0 38 2 19.1 12.7 11.0 6.4 11.0 Tart / tarsus cuose 6.4 11.0 12.7 11.0 Ephemareptera Caents cp. 6.4 11.0 Tetcrcptera Cheumatcasyche sp. 6.4 11.0 sbtotal 210.1 151.5 127.3 79.5 95.4 83.3 439.3 239.3 MOLLUSCA Polecypoda Ligumia sp. Pecotera sp. Immatures g,4 99,3
% btotal g,4 93,e TOTAL 547.5 202.a ,2005. 5 1488.S 375.5 231.C 4564.9 303G.1 Data presented as r.o. cf ceganisms/m2 and computed fr om 3 grabs with a Ponar dredge (A = 0.052m2) at each of 18 shmpling stations at Locust Point.
S.D. = Star-dard Ocviation
* .sw esse e=w e we w= ewemme m eme,- -w. ._ peup e I
145
, TABLE 37 ANALYSIS C.c 'BENTH!C MACRO!NVERTEERATE PCPULATICNS AT LCCUST PO!NT*
5 Octc5er 1976 TM _S Mean tien 8 I 9tatien 9 l Smeton 11 ! Shtien 12 i iS.D. Mean t S.D. t.tca n ' S .O. I Mean S.O. CCELENTERATA Hydra so. (stngle polyp) 210.1 87.5 235.6 249.3 19.1 33.1 19.1 19.1 Hycra sp (budding polyp) 19.1 19.1 31.8 29.2 38.2 66.2 6.4 11.C Subtetal 223.2 1 CS.3 267.4 257.4 57.3 99.3 25.5 29.2 ANNEL!DA h H!rudinea Helobdella olemata 12.7 22.0 6.4 11.0 PlaccDcelta mon-!? ora Cligochaeta Immature (hair setas) Immature (no hair setae) 1165.1 17C8.2 1222.4 713.4 579.4 611.9 1438.9 689.8 Branchtura seweravt Limno0rttus cerAx h clacarecelanus y clacare=atanus-cer Ax L. maume anst s 6.4 11.0 g udakemtansus L. profuncicola 55te:. mats serrectica 458.4 744.4 2 3.3 237.4 38.2 38.2 640.4 530.3 Potamothrix moldaviensis 6.4 11.0 Subtetal 1642.6 2484.0 1483.5 699.2 617.6 648.9 2279.3 372.5 ARTHROPCOA Cladocera Lectodera kindtil 623.9 458.5 127.3 111.9 31.8 11.C 25.5 44.1 Ampntpoda Gammarus fas:tatus 31.8 29.2 25.5 11.0 Is poda Asellus militares 3,4 11.o Diptera (Chiro.~omtcas) Chironomus sp. 31.8 55.1 11.0 19.1 44.6 19.1 50.9 58.4 Cryctochirocomus sp. 12.7 22.0 19.1 33.1 6.4 11.0 57.3 50.5 Glyocctendices sp. Polvosoitum so. Pecclactus sp. 50.9 48.1 Proclacius pucaa Tanytarcus sp. 25.5 44.1 50.9 43.1 25.5 22.1 44.6 11.0 Tarytarsus ;r.:cas 12.7 22.0 Epnamereptera Caenis sp.
'.cienoptera Cheumatco=ycne sp.
- SJbtotal 732.1 488.6 241.9 192.3 103.3 39.8 241.9 221.4 u.0LLUSCA Pelecypoda Ligumla sp.
Proctera sp. Immatures Subtotal TOTAL 26C3.9 28C0.5 1992.8 1170.3 7G3.2 784.5 2546.7, 403.5 Data presertad as no. of organisms /m2 and computed from 3 grabs wi'n a Ponar dredge (A = 0.052m2) at each of 18 sampling stations at Locust Point. S.D. = Standard Deviation i 1
. . . . ._, ... ..._:---- . -s = - * ~ ~ ~ ' " * ~ ~ ~ ~ ~ ' ~ ~ ~ ~ ' ~ ~ ~ ~ ~ ~ ~ " ~
i . 146 TAGLE 37 ANALYSIS Cf 'GENTHIC tv%CROs.*NERTEERATE PCPULAT:CNS
, AT LCCUST POINT
- 5 Ceteoce 1976 TW S t i^n 13 l Station la i paNc, 15 i Sentien 10 Mean 5.0 I Menn S.D. Moan i S .O . i Maan S.O.
COELENTERATA Hydra sp. (singis polyp) 76.4 19.1 50.9 44.1 19.1 19.1 R/ce2 sp (budc[ng polyp) 6.4 11.C 6.4 11.C Suttotal 76.4 19.1 57.3 50.5 25.5 29.2 ANNELICA Hirudinsa Helobdalla eleagata Placo:catta mer.ctfdra Ol!2cerasta Immatare (hair satae) Immst:,.re (no hair satas) 4221.1 1871.8 1712.6 1939.3 2597.6 2102.2 236.5 33.1 Branchiura sewerbyt 6.4 11.C 12.7 11.C LimevAritus cervtx 12.7 22.C 19.1 19.1 b clacareceianus 6.4 11.C 25.5 44.C L. clacaracmiarus-cervix 6.4 11.C C meummers s 12.7 22.C 6.4 11.C 57.3 99.2 b ude.<em'ansus 19.1 33.1 19.1 33.1 C prcfun5!:ota 6.4 11.0 Olhtd:nais e.--.-etas 261.1 210.4 50.9 49.1 1C3.2 90.3 44.6 11.0 Potamoterix motcaviensis 12.7 11.C 25.5 44.1 Subtstal 4552.2 2C64.7 1782.6 2002.5 2S65.1 2221.8 331.1 39.8 ARTHRCPCOA Clac:cern Lectedo-a kirdtil 95.5 103.7 57.3 99.2 31.8 29.2 Amphtpeda Gam--ar as fat: latus 6.4 11.C 12.7 22.C
!sopoda Asaltus m!!!! ares Diptera (Chirer.cmldae)
Chiror.cmus sp. 89.1 67.1 33.2 19.1 38.2 19.1 Cryot cNrcromus. sp. 57.3 66.2 19.1 10.1 38.2 19.1 31.8 22.0 Glypteten: Ices sp. 25.5 23.2 Polyosc!it.m so. 25.5 44.1 12.7 22.C 63.7 110.3 Procladius sp. 76.4 113.2 25.5 44.1 299.2 495.5 12.7 22.C Peccladius eucas Tanytarsus so. 103.2 138.2 197.4 231.C 50.3 55.1 Tanytarsus pupas Epnemere; tera Cannis sq. 12.7 11.C 6.4 11.C Tetenc;tara Chaumstepsyc53 sp. g;g g 471.1 248.5 350.2 270.3 566.6 498.s- 44.5 22.1 uCLLUSCA Pclacyp:da Ligumia sp. Pecotora sp. Immatures Subtotal TOTAL 5099.7 2241.8 3457.1 2491.7 375.6 61.4 2299.3l2190.1 Cata presented as no. of organisms /rr.2 and cerTuuted from 3 grabs with a Ponar dredge (A = 0.052m2) at each of 18 sampling stations at Locust Point. S.D. = Standard Deviation P
._.. . _ . . . ~ . . ..- - - - . - - . -- -- - - - - - - -
147 TABLE 37 ANALYSIS Ci: BENTHIC MACRCINVF_RTEERAT E FCPULATICNS AT LCCtJST PCINT* 5 Cetober 1376 TM Staten 17 I cit-A hn 18 - St: tion 25 i S;ctMn 27 I Mean iS.O. I Mcon S.O. Mean S.O. M:r n 15.0. COELENTERATA bydra sp. (single polyp) 12.7 11.0 6.4 11.0 184.6 140.8 33.2 33.1 Hv:r-a sp (budding polyp) S.4 11.0 6.4 11.C 31.8 11.C 19.1 33.1 Subt:tal 19.* O.0 12.8 22.0 216.4 144.C 57.3 57.3 ANN ELIDA H!rudfr.sa Hale': dalla elcogata Fla:Oscelta men:tfc a 6.4 11.C O Mgocr.neta Immature (bate setae) Immature (no hate setae) 286.5 220.3 3005.1 956.1 2075.5 1034.3 3iO9.1 1187.3 Bran =3 tur a so.eerbyt 39.2 0.0 Ltr not.*ilus cervix 12.7 22.0 6.4 11.0 19.1 oO y ctacareceiarus 25.5 29.2 6.4 1) .O b clamarec etar.us-cer-etx . 6.4 11.0 L 2 maumaensis 19.1 19.1 6.4 11.0 6.4 11.0 M ucs'<a nianzus 12.7 22.0 6.4 11.0 L. ProfuMt:cla . 6.4 11.0 Co? ice. ,at s seesertira 19.1 19.1 73.4 50.5 159.2 61.4 50.9 72.3 Po:arrste.rix molcavier. sis 12.7 11.0 19.1 33.1 19.1 19.1 Subte:a; 318.3 239.8 3170.6 877.1 2279.4 1129.5 '042.9 1139 8 ART)-RO PCDA Cla:becca LeSted:rs k!rdtil 31.8 55.1 31.8 39.6 114.0 50.5 A.r ::P..po ca Gammarus faset1Ns 19.1 19.1 Iscpoca Asattus m!!itares Ot;,tara (Chirenomica.a) Cht-cromus sp. 12.7 11.0 50.9 22.1 222.8 191.3 Cr yeto:Hi~t.ncmus sp. 12.7 22.0 25.5 11.0 50.9 22.1 19.1 19.1 Gly: : 2n:!ces so.
~
12.7 22.0 Po%ecitum sp. 6.4 11.0 216.5 58.4 152.8 115.2 31.8 22.1 Proctactus sp. 6.4 11.0 6.~ 11.0 12.7 11.0 216.5 145.9 Pr o::attus pusca 6.4 11.0 Tar.yu. sus sp. 44.6 29.2 1039.7 1028.4 44.6 22.1 Targarsus pvone 12.7 22.0 Epr smeropera Caents sp. 12.7 22.0 Trier.o,Ste ra, Chaur atcasychs sp. sbt .t.2L 25.5 29.2 337.5 94.2 1432.5 1124.0 563.5 344.3 MOLLUSCA Petacypeda Ligur9in sp. 6.4 11.0 Pr Oc:e- a sp. 6.4 11.0 Im mn:ures Subtotal 12.0 22.0 TOTAL 3eg,g 257.4 ,3533.5 S30.3 002S.2 1~88.4 47eg,7 13M.4 Data presanted as r.o. of organisms /m2 and cen putad fecm 3 grabs with a Poe.ar cred;3 (A = 0.052m2) at each of 18 samplirg stations at Locust Point. S.D. = Standard Cavta:Len
- .. ..m. ,=--==.we- ..
149 TAeLE 37 . ANALYSIS OF BENTHIC MACPCINVERTEspATE POPULATICNS AT LCCUST PCINT
- 5 Oct cer 1976 TM Jtati:n 29 } shtien 29 Aean/
g D. Mean fS.D. IMcan i S .O. otation COELENTERATA Hydra sp. (single polyp) 31.3 55.1 6.4 11.C 58.0 73.6 Hydra sp (budding pclyp) 12.7 11.C 13.8 11.E Subto"21 44.5 61.4 6.4 11.C 71.8 80.7 ANNELIDA Hirud!nea Halobdstla etergata 1.1 3.3 Placo:sdatts mentifera 0.7 2.1 Oligcc.m eta Immature (h. ale setae) 0.7 3.C Immature (no bair' se:ae) 4017.4 1022.8 3756.3 2217.9 20C2.0 1470.7 Branchlura sowartyt 63.7 110.3 14.5 27.2 Limnodetius cervt 4 12.7 22.0- 12.7 22.C S.O 7.4 L. etacaredatar.us 4.6 10.4 { c' cor.3stanus-esevix 0.7 2.1 L. maumeensis 19.1 33.1 8.5 14.2
-L. u:f skemiansus 3.2 S.E
-L. pror'uretcola 0.7 2.1 Cohtce- al s aeroentina 159.2 140.0 241.9 115.1 177.5 199.5 Potame:nrix moldaviensis 12.7 22.0 6.0 8.6 Subtstat 4272.1 1290.4 4C23.6 2309.0 2225.9 1525.9 ARThROPCOA '
Cladocera Leotocera k!ndtil 50.9 72.3 50.9 29.2 77.1 141.1 Amphipo::a Gammems fcse'atus 12.4 21.2 Isep0da Asellus militares O.4 1.5 Diptera (Cntronomidae) CNeo-amus sp. 76.4 13.1 38.2 19.1 48.3 54.3 Cr yote ?irer.cmus cp. 75.4 50.5 31.8 55.1 32.5 26.2 Glyotocer !cac sp. 12.0 31.6 Polyoacitum sp. 6.4 11.0 25.5 22.1 30.4 59.5 Pr 00tedius sp. 44.6 61.4 19.1 33.1 44.6 31.5 Prcelectus puone 0.4 1.5 Tany arsus sp. 19.1 0.0 19.1 19.1 101.9 250.3 Tanys;arsus pucae 2.5 4.9 Eprameroptera Ccents sp. 2.1 4.4 Trt:nzptera Chaumatcorvehs sp. S bto at 273.8 193.2 1S4.0 98.0 364.0 337.2 MOLLUSCA , Pelecypoda Li;umia sp. O.4 1.5 ' Procterc. sp. O.4 1.5 Immatures O.4 1.5 Suttotal 1.1 . 3.3 TOTAL 4590.4 1497.9 4214.G 2362.3pSS3.4 1GSO.1 Data peasa.mted as no. of organisms /m2 and computed from 3 grabs with a Penar deadge (A = 0.052m2) at acch of 18 same, ling stations at Locust Point. S.D. = Standard Deviation .. -
149 TACLE 38 ANALYSIS CI BENTJ4fC VACROINVERTESRATE FCPULATIONS AT LCCUST POINT' 1 November- 1976 TAXA
" SMtien 1 i Station 3 l Statica S I S%tica 7 I Mean iS.O. Mcan S .O. I Mean S .C. I Mean iS.O.
CCELENTERATA Hydra sp. (t:vddir.; polyp) 12.7 22.1 Hyd.aa sp. (ste;te polyp) 6.4 11.0 19.1 19.1 6.4 11.0 Subtotal 6.4 11.0 31.8 39 8 S.4 11.0 ANNELICA Hirudinsa Olna sp. Helobcalla s agr* alls P acoOdella monnfera Oligochaets Immatur e4 (hntr setae) Immatures (no hair setae) 120.9 22. 1305.2 784.3 725.4 460.9 '155.5 108.6 Branchiura soweatvi 44.6 St.4 76.4 19.1 Limned, itu s cer-nx 0.4 11.0 L. clamaradetarus L. clacaredsiaaus-ee-via L.- mau m3.as t s L_. prefuncicet a L. uds<em:aras Oohtece.ats sereertira 783.1 852.9 76.4 83.3 19.1 33.1 2C3. 105.2 Potamethrix raoidaviensis Subto.at 904.0 879.9 1432.6 775.1 1820.9 506.2 359.2 90.3 ARTHROPCDA Cladecera Lectoder a kir dtil 12.7 22.1 Amphipoda Crargonvx sp. Gammaras *asetatus 25.5 44.1 6.4 11.0 6.4 11.0 39.2 38.2 Diptera-CNronomidae Chiro-orrus sp. 19.1 19.1 12.7 11.0 Cht re.90mus ,em Cryotechie:m us so. 50.9 11.0 57.3 50.5 12.7 22.1 Cryptechiro. - ... _ura Glystotenc!:ts sp. 171.9 193.8 19.1 33.1 19.1 33.1 50.9 50.9 Polycesiturm sp. 25.5 29.2 6.4 11.0 Proct:dius sp. 12.7 22.1 Proc 1sdtus cura Ta nytarsus sp. 50.9 39.8 19.1 19.1 12.7 11.0 12.7 11.0 Tanytar sus pupa Xenochirocomas sp. Ephemer catera Caenis r? . 12.7 22.1 TrichopterL Chaumato we' 3 sp. Subtotal 280.1 219.7 133.7 19.1 108.2 2?pt i 133.6 116.2 MO LLtJSCA Pelecypeda Immatures Lamositis sp. Subtern! TOTAL 1194.1 1C29.7 1572.7 904.1 19FO.9 SC2.s 5C9.2 44.1 Data presor.tsd as no. of ceg:nisms/m a~:1 comcuted from 3 grabs with a Perer-deadga (A = C.052m2) at each of 10 samp!*rg stattor s at Locust Point.
*
- Not all tasc vett 2 ceticcted in Noverrber.
S.D. = Stands.-d C:nati:n i I
._, _, ,. .. - ~ ~ - - ~ -~
150 TABLE 38 ANALYSIS OF BENTHIC N%CRCINVERTESRATE PCPULATICNS AT LCCUST POINT' 1 November 1976 A _ Sutien 8 i Statien 9 i Statico 11 i Station 12 Mean S.O. t u.can i S.O. l Mean { S.O. I Mean S.O.
.CCELENTERATA P /dra sp. (bucdtn9 polyp) 11.0 12.7 6.4 11.0 Hydra sp. (sir ;te polyp) '
Subietal 6.4 11.0 12.7 11.0 ANNELICA hirudinea Olna sp. Heloodmila s*ngratis Placotdatta mer.ttfora Oligoc.meeta Immatures (hair setae) ImmaNees (ro hair retae) 95.5 133.7 171.9 182.2 216.5 148.4 216.5 185.5 Brancht ura sewerby' Limnodat;u s ce vix L. claosrecata-us L.- c! coa rec s t anus-csevtx L. maum eensis pro *vre!:Ola L.- L. udekamta.~;s 03hiconsis seroerttna 25.5 44.1 6.4 11.0 445.7 253.5 598.5 219.7 PotarretMeix moldaviensis Subtetat 121.0 177.8 178.3 177.5 662.2 411.9 815.C 403.5 ARTHACPCDA j Cladocera Leotedora kindtil 38.2 33.1 38.2 38.2 Amphipod.t Cec.goryx so. Gamraaaus faseta*us 6.4 11.0 76.4 50.5 63.6 61.4 Diptera {hicor.cmidae Chironcr~.:s sp. 19.1 33.1 25.5 22.1 6.4 11.0 Chtroac.m. s euca Cryctochf reco&;s sp. 6.4 11.0 Cry 0to Mine-emus poca Gtyete:ere ces cp. 165.5 116.7 210.1 234.7 Potvoedilum sp. 19.1 0.0 19.1 0.0 Pmetsdius sp. 0*4 11.0 Preelt 5!us cu:a
~
Tar %.arsus sp. 6.4 11.0 12.7 11.0 6.4 11.0 Tany'1esus pupa Xeno:N *onomus sp. 6.4 11.0 Ephemaro;: tera Caenis sp. 13.7 11.0 19.1 33.8 Trichoptera Chaurratoesvehe sp. Subtotal 50.9 11.0 63.7 58.4 311.9 90.3 337.2 328.5
. MOLLUSCA Pelecypeda Immatures Lac Osilis sp.
Sub t:,,tal TOTAL 171.9 166.5 241.9 227.9 980.5 350.2 1165.1 719.0
- 2 Data presen*ed as no. of organisms /m and comp.ited frem 3 grabs with a Ponar drod;c (A = 0.052m2) at 3 ch of 18 sampii.9g statiens at Locust Point.
*
- Not a.! ta<a w2re Octlacted in Nov3mber.
S.D. = Stancard Deviation
.2
- ~ . . . .. -- . - -. . .. . . . _. . . _ - . . . . . . . . .
151 TABLE 38 ANALYSIS CF BENTHIC t. ACh0'NVERTEERATE POPULATICNS AT LC. OUST MINT' 1 Novo nbec 1976 TM Stati n 13 Str.tien 14 Ste. tic 15 l Ste W m 16 Mean iS.D. Mean ' S.D. M ean S . D . I Moan IS.O. COELENTERATA Pvd a so. (t:udding polyp) 6.4 11.0 Hydra sp. (sic;te polyp) 6.4 11.0 12.7 22.1 6.4 11.0 Subtotal 12.0 11.0 12.7 22.1 6.4 11.0 ANNELICA Hirudinaa Dins sp. H elobdella stagnalls Plac:tdella mcntifera 6.4 11.0 Oligochaeta Immatures (hair setae) Immaturas (no t ale setas) 114.6 87.5 4291.1 1252.5 254.6 342.4 191.C 133.7 Brarchluen sowerbyl , 165.5 134.2 Lim.- crttu s carvix 12.7 22.1 h C!aceredatanus L. ctacarede tarus-cervtx L. meumee-sts 6.4 11.0 L. cro'undic:la C udew t .t ~.:s Cohte:.nats s2ree-ttra 1CS.2 96.1 70.0 58.4 152.8 168.5 6.4 11.0 Potameterix maldaviensis Subt: tat 222.8 115.1 4552.1 1239.6 407.4 268.3 197.4 140.8 ARTHROPODA Ctado:sra Lectodera kirdtti 6.4 11.0 6.4 11.0 AmpWacca Crar.: .vx sp. Camm1~.as faref atus 63.6 55.1 31.8 55.1 Dip eet.-Ohi. cromldas Chirore.- us sp. 12.7 22.1 241.9 271.7 38.2 63.2 Chir- :r us oura C7ete :-tecernus sp. 108.2 61.4 6.4 11.0 44.6 22.1 Cev:'Ochi ortmus rrr a Glyc%:a~1!:es sp. 25.5 22.1 25.5 44.1 Polv edtium sp. 44.6 11.0 39.2 66.2 Pro:1.:tus sp. 101.9 94.2 101.9 176.4 Pro:ledius uca Tanv eesus so. 19.1 19.1 *i.4 63.3 Tcry'arzus pupa Xer:ch!rc~a- us sp. Ep:-ameroptera Caeris sp. 12.7 22.1 12.7 11.0 12.7 22.1 6.4 11.0 Trt:noptara Chaun-a.tece che so. 6.4 11.0 Subt::21 14S.4 CS.1 592.1 243.9 254.7 260.7 51.0 29.2
.V.0 LLUSOA Pelecyp:da Imm.atures Lamositis sp.
Subt:ta: TOTAL 382.0 169.8 5155.0 f155.S 508.5 519.9 243.4 169.8
- 2 Data prosse:sd as no. of organisma/m and computed from 3 grabe with a Ponar drod;;0 (A = 0.C32m2) et each of 18 sam;1teg s:ctions at Locu ,t Potet.
*
- Not all t xn v.ere collected in Noverrber.
S.D. = Standard Ocviation
_ . _ _ __ ~. - __ __ __ _ _ _ _ _ _ _ _ _ _ _ 152 1
; TABLE 38 l
AN ALYSIS Of: BENTHIC MACROINvCRTEGRATE PCPULATIONS AT LCCUST POINT * ! 1 November- 1970 ) i Sec.t f on 17 Station 10 SMtf rn 2S l stat!on 27 TAXA Mean
- i. Mean t S.O. Mann l S.O. i S . O . i M ean S.O.
[ CCILENTERATA i Hydra GP. (buddir.g polyp) 6.4 11.0 , , Hydra so. (single polyp) 4 Suttocat 6.4 11.0 ] ANNELIDA Hirudinea j Dira sp.
! Helobdalla stagnalis 6.4 11.0 1 Placobdatta mon-ifera 6.4 11.0 ! Citgochaeta
{ Immaturas (hair setae) j Immatures (no hatr satae) 382.0 20S.6 4399.4 1817.2 2578.5 2545.9 3749.0 3C54.6 Br enchlura sowerbvt 19.1 19.1 Limaecettu s car vix 44.6 11.0 19.1 33.1 L.
- cla=aasc etar us i
L. etacare:e taress-cer vt.- + L. meunvens:s 19.1 19.1 6.4 11.3 l L. r:roft -dicola l L. uda'<emi.arus g
; Cohtdonats saacerttra 171.9 151.5 38.2 38.2
; Potamet: r m moldaviansis i Subtotet 302.0 20s.6 4463.0 1802.9 2756.9 2686.5 3839.1 3129.5
- ARTHROPOCA l Ctadocern t cet dar a kind-tt 31.8 29.2 19.1 19.1 Amphip0da 7 C?an;0nyx so.
j Gamme.r us fas 'atus 6.4 11.0 6.4 11.0 6 . 4' 11.0 12.7 11.0 Dipter a-Chiro.9:midae Chtrenews sp. 6.4 11.0 394.7 502.6 165.5 138.2
; Chiron:mus cuca
- Crycto Mecc. mus sp. 50.S 11.0 44.6 44.1 76.4 132.3 152.8 152.8
' Cry:toch%romus puca Glyotete-dtoes sp. 38.2 38.2 Polveedth:m sp. 19.1 33.1 191.0 201.2 Procledfus sf .
Pr octedius cues Tarwtnesus sp. 89.1 77.2 38.2 65.2
- Tanytarsus papa Xenochiror.omus sp.
E;:hamar optar z I Caenis sp. a Trich 0ptera
- Cheumatoosyche sp. 6.4 11.0
! Suttotal 63.7 11.0 1C8.3 61.4 5G8.4 739.8 385.7 533.5 MOLLUSCA ! Pelecypoda
{ Immatures ) Lamnsilis s;s. 6.4 11.C l Subtotat TOTAL 445.7 125.0 1564.9 1994.4 3353.C.3432.1 4424.8 3571.9, D'tta pr$ser.ted as no. Of or gan!smc/m and computed from' 3 grabs with a P0nar-cred;c (A = 0.052m2) at each of 13 samding stations et Locust Point, j *
- Not all tc>cs wars coitected in November.
S.D. = Str.ndard Onviction i f 6
,%.gy.%,.,-,%9. . . . _ . . .
- m. -,----gw., +--,.pp,., _. - - - - . _ --
y--p ,, ,.'- - >s- .-*M =?wm--&-&ty -- W-'"
- --- _ - - . - - - - ~ - - - - . - . - - - --
~
. .-- ~ . ., .- -~~~--~~~~~~~=~*:~~~-
153 TAsLE as ANALYSIS OF SENTHIC MACRCINVERTEERATE PCPULATICNS AT LCCUST PCINT* 1 November 1976
" 28
- TM _ stat ten '
stet ten 29 iMean/ Mean S.O. Mean i S.D. Station S.D. COELENTERATA M/dra sp' . (buccing polyp) 2.5 4.4 Hydra sp. (single polyp) 3.2 5.5 Subtotat 5.8 8.1 ANN ELIDA Hirudinea Otra sp. Heloodella stagnalls O.4 1.5 Ptacobdatta mentifera 0.7 2.1 Oltgochaeta . Immatures (hair setae) . Immatures (no hair setae) 6015.3 3145.0 11GS.9 821.6 1443.8 1731.4 Branch tura sowereyi 63.7 58.4 20.9 43.4 j Limnodettu s cervix 63.7 11.0 8.1 17.9 L. clacarecetanus 12.7 11.0 0.7 3.0
- 1. claearedetanus-ce, vix L. mat.n sersts 31.8 22.1 3.5 8.5 L. pro *und! cola L. udekemianus OJNdonats sementira 6.4 11.0 165.5 2SS.7 159.9 224.5 i
Potamc*.Mrix moldaviensis Subtotal 6194.1 3181.7 1362.4 1C93.9 1704.5 1859.5 ARTHROPODA Cladocers Lectodern kf rvitt! 8.5 13.8 AmpNpoda Cesngonvx sp. Gamme us fasetetus 50.9 29.2 22.3 25.6 s Diptera-Ch:rcecmicce CNeot omus sp. 241.9 253.6 65.8 115.2 Chironomus cues CryctocNronomus so. 241.3 29.2- 6.4 11.0 47.8 64.7 CeyptoeNrecomus puon Glyoteterdices sp. 44.6 77.2 42.8 65.9 Polvoedilum sp. 267.4 333.5 25.5 29.2 ' 36.4 72.S Procladius sp. 12.4 32.7 Pr-oc!adius puca
. Tanyter sus sp. 184.6 221.4 19.1 19.1 30.4 46.6 Tanvtar sus pupa Xen:chtremmus sp. O.4 1.5 Ephemeroptera Caerts sp.
4.9 6.7 Triduptera Chsumatootvchs sp. O.7 2.1 Subtotal 1031.3 913.8 51.0 29.2 272.3 269.1 MCLLUSOA Pelecyp:da
- Immatures l
1 Lcm:silis so.
. Subtotal ; .
v O.4 1.5 j TOTAL 7225.4 4105.9 1413.4 1106.2 19S2.5 i 2073.C Data present:1 as no. of or ganisms/m and computed from 3 grabs with a Ponar dred;0 (A = 0.052m2) at each of 10 sampling stations at Locust Pqte.t.
*
- Net all tawa ware collected in November.
S.D. = Standard Deviation 9g wn gg 9,.we e a e $-u-^W* " * " "
- e--4.-... .-.,-.~, ...--.,,,v- - . , - - - - , . , , , . , - , - - , . - - - ,- -.,--,_w.,m,--,.--r,y , . , .- -.
-.-,yv. y-., -- ------m-- - - - - . - -
1 M-
\
APPENDIX D RESULTS OF GILL NETTING, SHORE SEINING, TRAWLING, AND HOOP NETTING AT LOCUST POINT, LAKE ERIE JULY - NOVEMBER 1976
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f (
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l
; TABLE 40 ,
CILL NET CATCH PER UNIT EFFORT
- AT LOdU:.sT POINT a; 11-12 AUGUST 1070
' f a
~ __
DIRECTION Of- TRAVEL
,o NORTHwcrST SOUTHEAST t>NKNOWN TO1ALS 7j . Lornth(mm) Mcnn Lcenth(mm) Mcan Lernth(mm) Mcnn . Moan E W hat.ht (rn) ,
s El SPECIES No. Mean Range Woloht(n) No. Mean Range We19ht(g) No. Moan Ratna Weight (o) No. Length E Maan Totc.I . i Aplodanotus j 8 grunniens 5 106 132-170 43 4 149 139-172 30 2 150 140-165 41 11 131 41 451_ j Cyprinus
;i cerpao 2 375 370-385 750 2 371 357-305 676 3 '337 317-363 535 7 350 637_ 445Q l
a
'. Carmsoma ej pejjtan yn 5 110 95-156 53 4 207 132-307 145 7 147 82-207 05 16 153 04 l 'o4_
d Not rup si, h t wiscenius O 114 96-122 13 5 109 96-126 13 14 112 13 102 f Parca ' flav w.c<.ns 1 161 142-195 57 21 176 142-219 74 2 171 170-172 60 41 169 E6 !
-. 2706 - .
l OT At 39 30 14 00 0702
*q l
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Aloca .
. i 13 pwudoharenous 19 68 82-00 6 17 OO 82-07 8 36 39 79-99 6 72 09 6 432
/ylodir.ctus i
, t __
c onriiens 2 138 129-14 127 2 152 150-154 35 4 145 61 324 ' *
)! _Cypritore , ,. carpio u 36? 322-431 635 3 350 326-367 547 3 332 251-422 606 14 277 627 0770 j! Dorce.ama I
I l[
- Marc,ne cepedtonurn 22 174 77-204 105 24 142 76-270 104 28 101 71-287 20 74 130 73 5402 j l 1} c hrys. ops 2 06 81-91 3 2 06 3 0
). Notrupis j
- .1' hussonius 33 100 08-110 -.
9 18 r>) 90-127 11 7 112 99-119 13 58 100 to 600
,., _. ~ _ !* .fla. v.e. sc.e..n.s--
41 173 136-197 t'6 56 167 140-204 63 3 16,7 145-106 57 100 169 1 g 64 6400 Ectru.ts11 annotacts t m - iOs toa ~ 100
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l 162 i i TABLE 43 SHORE SEINE CATCH PER UNIT EFFCRT* AT LOCUST POINT 7 July 1976 1 1 Length (mm) Weight ( g ) { Station Taxa No. Mean 7 Range Mean l Total 23 Alosa pseudoharengus 10,709 32 25-42 0.3 3427 Dorosema cepedianum 5,028 32 25-41 0.4 1805 Morone chrysops 13 33 24-45 0.5 6 Notrools, atherinoides 4 82 75-97 4 18 Subcual - 15,754 5256 24 Alosa pseudoharengus 18,054 35 27-42 0.4 6337 Corosema cecedianum 4,667 33 30-40 0.3 1549 Morone chryscos 144 32 16-45 0.4 62 Notroots atherinoides 18 72 56-93 3 61 N. hudsonius 16 36 34-39 0.3 5
~
Perca flavescens 8 37. 35-40 1 7 Percina caoredes 2 32 0.2 0.4 Subtotal 22,909 8021 25 Alosa pseudoharengus 1,488 30 23-38 0.3 397 Actodinotus grunniens 7 106 10 67 Corosoma cecedianum (adult) 6 194 184-205 83 500 g cecedianum (YOY) 15,0,43 32 27-G6 0.3 4829 I Morone chryscos 1,339 24 20-36 0.3 343 - l Notroofs atherinoides 34 63 27-94 3 100 l 75
& hudsonius 7 5 34
& soitooterus 7 60 3 17 l Subtotal 17,931 6287 )
l TOTAL 56,594 , 19564
- 0 Two hauts through a 90 arc with a 100-ft. bag seire (1/4 in bar mesh) at each station.
. . - -.. .. . : : . 2:. -. .: . - -- -
163 TABLE 44 SHCRE SEINE CATCH PER UNIT EFFORT' AT LOCUST POINT 10 August 1976 Length (mm) Weight ( g ) Station Taxa No. Mean Range Mean Total 23 Atesa pseudeharenous 283 47 26-75 1 393 Dorosoma ceoedianum 176 69 32-125 4 699 Labidesthes sicculus 1 42 42 1 1 Morone chrysoos 234 61 37-100 3 803 Notroots atherinoides 26 60 9-91 4 80
& hudsonlus 23 47 40-57 1 27 Pomoxis annularis .
1 57 57 5 5 Subtotal 744 2008 - 24 Atosa pseudcharengus 275 55 37-82 2 500 Actedirotus grunniens 2 67 56-77 23 47 Corosoma cecedlanum 90 68 30-113 5 413 Morone chryscos 89 71 45-104 7 624 Notecois atherinolces 2 80 75-85 4 8
& hudsonius 5 64 51-107 4 22 Subtotal 463 1614 25 Alesa esaudoharengus 115 56 42-75 2 186 Corosema cecediantsn 5 79 57-100 6 28 Morone chevscos 120 70 50-124 5 545 Notroots atherinoides 3 83 77-87 3 10 .
N hudsonius 18 60 43-105 2 40 Subtotal 261 809 TOTAL 1468 4431 3 Two hauts through a 900 arc with a 100-ft. bag seine (1/4 in, bar mesh) j at each station. l
164 i i , TABLE 45 i ! SHORE SEINE CATCH FER UNIT EFFORT
- I 1
1 AT LOCUST POIN i 20 September- 1976 ! l Length (mm) Weight ( g ) I Station Taxa No. Mean 1 Range Mean Total l i 23 Alcsa pseudoharengus 1 68 68 5 5 Dorosema cecedianum 65 73 48-113 6 413 Ictaturus punctatus 1 55 65 6 6
' Morone chrysops 5 91 31-103 10 49 Notecots atherinoides 16 74 50-92 4 68 N. hudsonius 1 95 95 20 20
-Subtotal 89 561 l
24 Corcsema cepedianum 42 75 54-145 6 270
!- Morone chrysops 1 101 101 11 11
] Notecpls atherinoldes 11 71 61-95 3 38 j Subtotal 54 319 25 Dorosema ceoedianum 108 73 55-168 4 443 Notropis atherir.oldes 11 78 58-96 5 52 . 1 Subtotal 119 495 '
- i
~ TOTAL 262 1375 4 I 1 Two hauls through a 90 0are with a 1CO-ft bag seine (1/4 in, bar mesh) at each station. I t l i I I l t
+w- .~.. ...... .. . . . . .. __ .. _, ,,___ . _ /
. , - - . - - , , - . - . - _ . , _ . , . . ,_ ,,- - - . _ _ . _ . _ . . _ . . _ _ , . . _ , , . , , _ , . . _ _ . 7 .__.,,ye eer- ---*evv--wa<-*
~
165 TABLE c-; SHCRE SEINE CATCH PER UNIT EFFORT
- AT LOCUST POINT 15 October 1976 Length (mm) Weight ( g )
Station ' Taxa No. Mean Range Mean Total 23 Dorosoma cepedianum 19 79 46-105 8 150 AAcrone chryscos 2 118 111-125 21 42 Notroots atherinoides 9 88 64-97 7 60 Subtotal 30 252 1 I 24 Cyorinus carpio 1 42 3 3 ] Ocrosoma cecedianum 121 86 40-125 9 1C80 i Morone chrysoes 3 85 77-93 10 31 i Notroots atherinoides 29 82 50-102 6 172 Perca flavescens 1 77 5 5 Pcmoxis annularis 1 57 3 3 Subtotal 156 1294 25 Carpiodes cyorinus 1 134 35 35 Dorosoma cecedianum 161 88 52-139 8 1305 PAorone chrysops 3 94 79-103 10 30 Notroots atherinoides 22 79 55-95 5 116 N. hudsonius 2 79 75-82 10 20 Subtotal 189 1506 TOTAL 375 3052 ~ Two hauls through a 90 0are with a 100-ft. bag seine (1/4 in, bar mesh) at each station. e I . . . - . . . . . . - . . . _ _ . . . ,. . . . . . . . . _ . _ . . _ _ , _ _ , _ . . . _ _ _ _ _ , _ . _ . _ _ _ , _ _ _ _ , , , ,
166 , i
~
TABLE 47 l l SHORE SEINE CATCH PER UNIT EFFCRT * - 1 AT LOCUST FOINT l I 15 November 1976 i ! Length (mm) Weight ( g ) l Station Taxa No. Mean Range Mean Total l ! 23 Notroots atherinoides 2 50 42-58 1 2 24 Corosema cecedianum 2 83 75-90 7 15 Notrocis atherte.oides 570 S1 50-74 2 100 Subtetal 572 1017 25 Ocrosema cecedlanum 1 75 75 , 5 5 Notrecis atherir.oldes 21 58 46-65 2 42 Subtotal 22' 47 TOTAL 596 1064 l 1 Two hauts through a SCO arc with a 100-ft. bag seine (1/4 in, bar mesh)
, at each station.
i O 4 1 l I I 6
- r * ~*==e * === -*s- & . . . ..s. , .. ., ...., ,.__. .. .# , . _,, , , _ , _
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.y,.,. -
.,-v- --,-m-- - - -
o
~ '
167 TASLE 4g TRAWL CATCH PER UNIT EFi ORT
- RESULTS BETWEEN STATIONS 8 AND 13 AT LOCUST POINT July - November 1976 i
Length (mm) Weight (g) l Cate Taxa No. Mean i Range Mean l Total i 16 July 1976 Aplodinotus grunniens 5 137 130-146 31 155 letalurus punctatus 3 138 95-200 23 69 BAorone chryscps 2 261 260-252 225 450
, Sttzostedten v. vitreum 2 242 231-253 145 290 Subtotal 12 964 20 August 1976 Alosa pseudoharengus 176 74 59-92 4 697 l
Actedinotus grunniens 2 165 162-168 49 98 Cyorinus ca' roto 3 399 369-423 927 2781 Ocrosoma cecedianum 221 74 45-120 6 1242 Morone chryscos 42 50 30-103 2 90
; Notrocis atherinoides 2 32 30-35 1 2 Notropis hudsenius 43 62 63-70 2 102 Pcmoxis annularis 2 50 41-60 1 2 Perca Ravescens 6 136 72-179 37 222 l Sub*wtal 497 5236 j I
13 September 1976 l Alosa pseudcharengus 150 88 72-110 7 1096 l Corcsema cepedianum 17 108 93-128 15 249 ! Ictaturus nebulosus 2 375 245-261 244 488 Morone chryscos 86 52 43-66 2 160 i Notreols atherinoides 1 83 - 4 4 N. hudsonius 61 93 49-125 7 413 Osmerus mordax 3 45 336-58 1 3 Pcmoxis annularis 1 65 - 2 2 Pcmoxts nigromaculatus 1 59 - 2 2 Perca flavescens 22 152 128-202 50 1100 Stizostedion v. vitreum - 1 182 - 62 62 Subtotal 345 3579 i e
- - - - _ , , - ,_ ,. . ,---,,_m,, , . - - . , -.___---,,m_., ,,,,,,.,,,_-._.,,,_,y, , , , - . _ - , , _ ,,,we,,
168 TABLE 48 CO N' T . TRAWL CATCH PER UNIT EFFCRT* RESULTS GETWEEN STATIONS 8 AND 13 AT LOCUST POINT July - November 1976 Length (mm) l Weight (g) Date Taxa No. Mean Range l Mean Total 12 October 1976 Alesa pseudoharencus 5 91 74-110 6 30 Cverinus caroto 1 425 - 1250 1250 Corosoma cepedianum 46 114 70-127 19 859
!c*alurus nebulosus 1 227 -
160 160 AAccore chevsoos 2 107 49-165 37 74 Notreols atherinoides 1 103 - 8 8
& hudsonius 18 104 72-128 12 216 Perca flavescens 16 162 80-214 57 912 Perecosts emiscomaycus 1 75 - 4 4 Subtotal 91 3513 2 November 1976 Alosa oseudoharergus 194 92 73-111 7 1450 Ocrosema cecedianum 1 88 -
6 6 Notroo ts atherinoides 2 48 45-96 4 8 E hudsonius 1 105 - 12 12 Osmerus mcedax 1 80 - 2 2 Subtotal 199 1478 Four 5-minute tows with a 16-ft. trawl (1/8 in, bag) on each cf the dates indicated. s
......w .y .. . . . . . . . .- . .. _ . . . , , . . . . . ...w -e ..
169 TABLE 49 HOOP NET CATCH PER UNIT Ef FORT " IN NCRTHWEST MARSH (STATION 21) JULY - OCTOBER * * (1976) Length (mm) Weight ( g ) Date Taxa No, Mean Range Mean Total
. 7 July 1976 Cyprinus carolo 1 540 1901 1901 9 August 1976 No Fish 20 September 1976 Cycrinus carcio 1 571 1674 1674 Pcmexis nicromaculatt:- 1 191 96 96 Subtotal 2 1770 28 October 1976 Dorosema cecedianum 2 318 305-330 311 622 TOTAL 5 4293 One 24-hr. set with a 2.5 ft. diameter, 1 in, tjar mesh hoop net.
*
- Ice prohibited sampling in November and December.
' 170 TABLE go HOOP NET CATCH PER UNIT ~ EFi:CRT * , IN SOUTHEAST MARSH (STATION 22) JULY - OCTOSER * * (1976)
~
Length (mm) Weight ( g ) Date Taxa No. Mean i Range Mean Total 7 July 1976 Cyorinus_ caroto 2 277-298 304 608 Pcmoxts annularis 2 225-273 220 440 Subtotal 4 1048 9 August 1976 No Fish 20 Septmeber 1976 Pomoxis arnularis , 4 231 210-285 161 643 5 191 182-199 99 493 4 L nicromaculatus 1136 j Subtotal 9 28 October 1976 Cyortnus carolo 1 225 153 153 TOTAL 14 2337 One 24-hr. set with a 2.5-ft. diameter, 1 in, bar mesh hoop net. Ice pechtbited sampling in November and December. t i i i
179 APPENDIX E ANALYSIS OF ICHTHYOPLANKTON SAMPLES CO LLECTED AT LOCUST POINT, LAKE ERIE JULY AUGUST 1976 e s 4
- ~ . - . . . . . . . . . . . . - . . _ . .. . .... _ ~_ .. ~ - . .
TABIE S1 ICHTHYOPLANKTON CATCH PER UNIT EFFO'RT* AT LOCUST POINT 0 JULY 1976-Specicu Sta.O Surface Sta. 3 Bottom Sta. 13 Surface Sta. 13 Bottom Range $i Number Number Range *
- Number Range *
- Number Range *
- F ish Ecos l Alosa
, pseudoharungus ! Aplodinotus grunniens 1 12 , l Carpiodes !
cyprinus l
; Catostornus ,
'l commersoni
- Cyprinus carpio .
f J Dorosoma cepecianurn 1 10 j _Moronc _ chrysops D Flotropiu " atherinoides 200 0-11 11 9-10 910 8-15 3 8-9 N.
-hudsonius Osnier lus j marcax __
l Perca ,
; . flavuoscenu 6
j Pomoxts sp. l
; i Stizostodion v.- !
vt t reum t ; Unknown l l 1OTAL (Larvae only) 200 12 91o 4
~ > Volume l
{ filtered (m3) 125.6 145.1 145.6 163.1 i
** One 5-min' tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh).
Range = total length in mm. I
TABt.E SI-ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 8 JULY 1976 Spectes Sta. 29 Surfaco Sta. 29 Bottom Sta. 26 Surface Sta . 26 Bottom Number T Number Ran0e
- Rangc** Number Rangc** Number Range *
- F ish E005 Alona pseuctoharengus
! Aplodinotus grunniens i Carpiodes I
cyprinus j Catostomus
! commerson!
Cyprinus j carpio Dorosoma cepocianum
- Morone '
chrysops Notropiu j atherinoides 420 8-20 11 0-18 357 7-14 6 8-18 l N. hudsonius Osmerus nl.o.,rO. LtX-Perca flavenscenu i ! l Pomoxis sp.
- I Stizostedion v
; vitreum t
- l Unknown
! ! 10TAL ! (Larvae only) 420 11 357 6 I I Volume i filtered (m3) 159.1 13G.5 108.6 167.8 One 5-min tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh),
i Range = total length in mm.
T/ .E 51 ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 8 JULY 1976 Sta. 8 Surface Sta. 8 Bottom Sta. 28 Surface Sta. 28 Bottom Total S Pecies Numbe r* Rangc *
- Number Rangc *
- Number .Rangc** Number Rana c *
- Surface Gottom Fich Eggs Alosa y _pseudoharenqun Aplodinotus
,_gr unnions G S-9 , 7 Carpiodos ! cyprinus Catostomus
_commersoni Cyprinus carpio Dorosoma
. cepedianurn 10 0-9 2 8-14 8 O-10 10 11.
Morone - _ cigygpp 10 23-23 to y Notropis 010 7-11 2 8-9 470 8-10 1 7 2067 34 a t h.e. .r.i no. i d,es_
!. N. .
hudsoniue. Osmerus mordax . Perca flavescens Pomoxic sp. ll Stinoctedion v. l vitroom
'. Unknown TO~I A L 630 10 470 0 2987 52 (J arva, ontv) ___
Volume
~
filtered (m 3) 148.7 154.8 166.8 151.5 j - One 5-min tow with a 0.75-in diameter heavy-duty oceanographic plankton not (no. 00, 0.76 mm mesh). d* Ran0e = total lerv)th in mm.
- . - . . - --- . - - - _ - _ . _ _ . - .. . . - . = _ - . .- _ - . - . - . - - _ - . . . _ . _ . . _ _ . - -
TA" 8E S1 I, -
. ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT '
) i 23 JULY 1976 Sta. 3 Surface Sta. 3 Bottom Sta. 13 Surface Sta. 13 Bottom
- Species ' '
Number Range" Numtser Range *
- Number Range *
- Number Range **
Fich Egos Alosa __pseudoharengus Aplodinotus I r t]l'UnnienS i
; Carpiodes l j cyprinus 4
1 i CLiloGLOmuS , commersont Cyprinus carpio Dorosoma ' cepeainnun3 23 11-21 1 - 16 13 7-18 Morone a l , chrysops j 7Efropiu i ], atherinoides 150 10-17 1 12 18 11-24 j N. j hudsonius i Osmerus
- j moroax j; Ferca j '
fldvendCenu 4 . j Pomoxis sp.
. i Stizostedion v.
J
, vitreum
, Unknown 3l ;
TOTAL 3 t (Larve. only) 173 2 31 0
~ .
il red (m3) 101.4 170.0 168.6 150.1
+ +
** One S-min tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh).
l Range = total longth in mm. '
TAF" E S2
; ICHTHYOPLANKTON CATCH PER . UNIT EFFORT
- AT LOCUST POINT 23 JULY 1976 l
Specles Sta. 20 Surface ~ Sta. 20 Bottom Sta. 26 Surface Sta. 26 Bottom Number Range *
- Number Range *
- Number Range ** Number Range *
- 1 F ish Eggs
,, Alosa i i pseudohareneus 1 17 l -
. Aplodinotus grunniens Carpiodcu i cyprinus l
Catostomus commersoni 4 Cyprinus carpio li Dorosoma - cepeaianum 8 14-10 - 6 12-14 j Morone . chrysops N
- _ Notropis atherinoides 0 10-11 173 0-24 120 7-18 i
- N.
. -hudsonius
., Osmer us i i morOaX j Perca j ; flavenucenu l Pomox[s sp. ,i !. Stizostedion _v.
; vitreum t
l ; Unknown - i lOTAL l' (Larvae only) 17 1 170 120 i j Volume filtered (m3) 140.7 152.6 158.0 161.3
** One 5-min tow with a O.75-in diameter heavy duty oceanographic plankton not (no. 00, 0.76 mm mesh).
j
,; Range = total length in mm.
4
T/ E 52 - ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT
. P:3 JULY 1976 Sta. 8 Surface Sta. 8 B otto m Sta. 20 Surface Sta. 28 Bottom Total Specie Number R ang e * ' Number Range *
- Number . Range ** Number Rang c * ' Surface L20ttom Fish Eggs -
Alosa
. pseudoharenqus 1
Aplodinotus _grunniens j Carpiodes
,I cyprinus Catostomus commersont Cyprinus
, carpio Dorosoma 15 11-21 3 14-19 68 cepedianum 1-Morone -
Q chry:mrig 4 Notropis t lt,hgt'inolden 101 11-25 56 10-13 507 121 N. l
$di!E9.O li Osmerus rnordax -
, Perca j flavescenc Pomoxis sp.
Stizostedlon v. l vit room i Unknown TOTAL 116 O SO O 575 123 (Larvac ontv) Volume 147.7 142.0 140.2 filter ed (m3) 152.0 C - One 5-min tow with a 0.75-in diameter heavy-duty oceanographic plankton net (no. 00, 0.76 mm niesh).
'O Range = total length in mm.
TAB' SI 53 l ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 20 JULY 1976
- l Species S ta . 3 Surface ~
Sta. 3 Bottom Sta . 13 Surface Sta. 13 Bottom l Number Range" Number Range ** Number Ranqc6* Number Range **
, Fish ! E00s Alosa I
pccudohnreneus Aplodinotus __ grunnieda . Carpiodes l cyprinus , Catostomus CommOrsOnl ' Cyprinus carpio Dorosoma cepeaianum . 3 15-17 Morono m chrysops $
~No tr(; pin ,
atherinoides 12 12~22 1 12
~N.
-~hudsonius Osmerus mor;oax_
Ferca fluvenucenu Pomoxis sp. 4 Stizostedian _v.
, vitreum
! Unknown
! 'l OTA L (Larvae only) 12 0 4 O Volume
- filtered (m 3) 175.7 161.4 146.7 170.2 One 5-min tow with a 0.75-in diameter heavy duty oceanographic plankton not (no. 00, 0.70 mm mesh).
Ran9e = total length in mm.
TAP ' .E 53 l [ ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT
?
29 JULY 1976 Sta. 29 Surface Sta. 29 Bottom Sta. 26 Surface Sta. 26 Bottom
- Species Number Range" Number Range'*
- Number Range *
- Number Range ++
F ich ]I ; Ecos Alosa pseudohareneus 1 22 l
- /\plodinotus
< grunnte:E I Carpiodes cyprinus Catostomus commersoni Cyprinus carpio Dorosoma j cepecianum 1 13 1 17 Morone a chrycops y N'TXropis~ atherinoides 1 13 4 11-12 , N.
~hudsonius 2 Osmerus , j moruax ' 4 +
Forca
, .l flavenscenu Pomoxis sp.
i Stizostedion v.-
~ r eum vit 4 ;
. Unknown i 7OTAL (Larvae only) 3 O 5 O 1
l! Volume ! l! filtered (m3) 192.6 149.3 159.1 150.0 i One 5-min' tow with a O.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.70 mm mesh). Range = total length in mm.
l , TA' E m ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT ,
29 JULY 1976 . Sta. 8 Surface Sta. 8 Bottom Sta. 28 Surface Sta. 28 B otto m Total -
', Species Number Range * + Number Range ** Number . Range *
- Number Range ** Surface Bottom l Fish Eggs !
Atosa '
._pseudoharengus 1 l
f _ 1 Apiodinotus , j grunniens j
, l'Ek 8 cyprinus
' l i Catostomus l ,
commersont Cyprinus ' carpio ' Dorosoma cepedianum 2 17-18 7 , Morone CD o _ _._Cl!CY!K!f t9 - Notropis .
' atherinoides 10 l N. i lf 1 Osmerus hjf5!ggniup ,
I mStrpax . l _Perca
- flavescens -
i
.l
- Pomoxis sp.
i Stinostedian v. i vitraum ? i Unknown !' TOT Al. 2 O O O 26 0 (Larvac ontv)
- Volume ~ ~ ~
filtered (m3) 163.6 162.0 148.5 168.3
- Ono S-min tow with a O.75-in diameter heavy-duty oceanographic plankton net (no. 00, 0.76 mm mesh).
' Range = total length in mm.
f
TAP ' 'I 54 l l , ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 9 AUGUST 1976
- Sta. 3 Surface Sta. 3 Bottom Sta . 13 Surface Sta. 13 Bottom i
S Pect ~ Number Range" Number Range
- 4 Number Range ** Number Range * *
,; F ich {
5
- Eges
! Alosa j pseudoharengus Aplodinotus grunntens s
i Carpiodes 1
! cyprinus ,
} Catostomus a j commersoni , Cyprinus carpio l Dorosoma cepea ranum
- i Morone chrycops m c>
7T66 opiu " i utherinoides 9 11-20 1 11 10 11-24 ; N.
- i -hudsonius __.
j OSn ierus i nygrgax Perca flavenscenu Pomoxis sp. Stizostedion 3 ' l q vitroum i lI
- i Unknown i
!L U 70TAL l ,! (Larvae only) O 1 10 O
~
Volumo j l l'
'}' 162.5 filtered (m3) 161.1 176.2 169.3
** One 5-min tow with a O.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh). !
Range = total length in mm. I 1
' TABI E 54 ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 9 AUGUST 1976
- Sta. 29 Surface Sta.29 Bottom Sta 26 Surface Sta. 26 Bottom i Spec.ies i Number Range *i Number Range *
- Number Range ** Number Range *
- F ish i Eges :
Alosa ,
. pseudoharengus 2 22-24 ! Aplodinotus I , grunniens Carpiodes f cyprinus Catostornus
- commersont Cyprinus 1 .
4 carpio Dorosoma , ccpecianum - Morone . , j chrysops i$ t 790Leopiu atherinoides 16 13-28 19 12-29 f N.
~hudsonius _ _.. i Oumerus ? I i m o rOLDC i Perca , flavenucents i . .
j Pomoxts sp. i Stizostedion v.
~ ; ; vitreu m l ; i Unknown 1 10 ! I 'f 0TAL (Larvae only) 17 2 19 O ,
l _ 1 Volume ! filtered (m3) 145.6 171.9 207.1 160.8 ; Ono 5-min tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh). ! Range u total length in mm. , l
TA' .E 54' - i
; ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT t
O AUGUST 1976 1
! Sta . 8 Surface Sta. 8 Bottom Sta. 28 Surface Sta. 28 Bottom Total Species Range *
- Number Number Range *
- Number
. Range *
- Number Rango *
- Surface Sottom Fish Eggs
- I '
Alosa
'I 4 21-31 4 2 pseudoharengus ;
i i hplodinotus
'l' ,_grunniens Carpiodes
'l l
1i cyprinus
;i Catostomus ,
commersoni Cyprinus ; carpio l Dorosoma > _cepedianum - - Morone - 4 _; CltCYn91?f, @; Notropis atherinoides 6 10-25 49 12-23 100 1 i . N.
'i
- , ,' h.u.d_ron,i.u. s ,
Osmerus t 1 mordax .
'! Perca f
- i. flavescens '
- u
]l Pomoxts sp. Stizostedion v. ; j vitroom i Unknown
'j TOTAL 6 O 53 0 114 3 (Larvae ontv) ~ ~~~ ~
I Volume 130.1 177.2 170.3 filtered (m O) 174.0 j . One 5-min tow with a O.75-in diameter heavy-duty oceanographic plankton not -(no. 00, 0.76 mm mesh). j' *
- Range = total length in mm.
tar E 55 ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 20 AUGUST 1976 ;
2 .
, . Sta. 3 Surface Sta. 3 Bottom Sta. 13 Surface Sta. 13 Bottom -
Species Number Rance +
- Number Range *
- Number Range *
- Number Range *
- l F ish j Ecos j j.,
Aloca
+
pset Kloharengus 9 I, Aplodinotus s grunnlens i
}j Carpiodes j cyprinus !
i Catostomus ' 1 i 1 commersoni I i Cyprinus j ' , carpio Dorosoma ~
- ; cepeaianum * ' '
j' Morone a l chrycops Notropis
! atherinoides
- n. *
~huasonius
, Osmerus
. n!Ofpax___.
,1 6 Ferca , fitsvenscenu
! Pomoxis sp.
i Stizostedion v.-
; vitrcum j ,' Unknown ~
j! I 'l OTA L (Larvae only) O O O O ] _ ___ Volume i i filtered (m3) 155.2 107.8 157.2 151.3
** One 5-min' tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.76 mm mesh).
i lj Range = total length in mm. i
TABt E SS ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 20 AUGUST 1976 Sta. 20 Surface Sta.29 Bottom Sta. 26 Surface Sta. 26 Bottom Species Number Range *
- Number Range *
- Number Rance *
- Number Range *
- F ish Ecgs Alosa pseudohareneus Aplodinotus grunniens Carpiodes -
cyprinus Catostomus commersont Cyprinuu l citrpio Dorosoma cepeaianum ' Morone a chrycops a)
~Notropin "
i atherinoides
~
N.
-hudconius Osmerus
] ngoruax __ , Ferca
- flavenucenu i -
. Pomoxis sp. ; Stizostedion v. , ; vitraum Unknown i 1OTAL (Larvae only) O O O O Volume filtered (m3) 165.1 161.6 173.6 187.8 '
One Smiin tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0,76 mm mech). . Range = total length in mm. ',
T/ 'E _ 55 ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 4 20 AUGUST 1976 3
Sta. 8 Surface Sta.8 Bottom Sta. 28 Surface Sta. 28 Bottom Total Species JJumber Range *
- Number Range *
- Number . Range *
- Number Rangc * + Surface Gottom Fish Egris Atosa pseudoharengus ___
Aplodinotus _grunniens Carpiodes cyprinus Catostomus commersont i Cyprinus CilrpiO Dorosoma i cepedianurn , Morone - l g _ clicymne o> Notropic atherinoides N.
.hu. .d. .so. .n..i.u. .s Osmerus rnordax .
! Perca flavescens
- Pomoxis sp.
~
Sti::ostedion v. vitroum Unknown
- T O'I AL (Larvae ontv) O O O O o o
'i Volume ' - ' filtered (m ) O 169.2 152.2 157.6 185.2
* - One S-rnin tow with a O.75-in diameter heavy-duty oceanographic plankton not (no. 00, 0.76 mrn mcch). *O Range = total length in mm.
TA "' _E SG ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT 31 AUGUST 1976
, , Sta. 3 Surface Sta. 3 Bottom Sta . 13 Surface Sta . 13 Bottom Spectes Number Range ** Number Range ** Number Range +
- Number Range **
F ish Eggs I Alosa _pceudohareneus Aplodinotus 11runniens j , Carpiodeu ' cyprinus Catostomus commerson! - Cyprinus carpio DorosOma j cepeaianum
- Morone chrysops 5
~INotropiu '
atherinoides
~~
N.
-huasonius Osmerun moroax _ _ _
Ferca 1 3 flavenucenu Pomoxis sp. i Stizostedion g g vitreum Unknown lOTAL (Larvae only) O O O O t Volume
- filtered (m3) 167.0 157.9 167.8 157.9
** One S-min' tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.7G mm mesh).
Range = total length in mm.
TA "'_E 56 ICHTHYOPLANKTON CATCH PER UNIT EFFORT
- AT LOCUST POINT
, 31 AUGUSl 1976 -
Sta. 29 Su rface Sta. 29 Bottom Sta. 26 Surface Sta. 26 Bottom Spect ~ Number Range" Number Range *
- Number Range ** Number Range * *
. F ish Epps Alosa pseudohareneus Aplodinotus grunnicos Carpiodes cyprinus i Catostomus commerSoni Cyprinus
, carpio Dorocoma cepecianum Mororie chrysops g 76U opii, atherinoides 1 24 3 33-40 N.
~huasonlus ~
Osrnerus mo r_o_.a_X_ . _ _ _ _ F_qrca flavenscenu Pomoxis sp. j i Stizostedion v.
- vitrcum
; Unknown
! 'lOTAL 1 O 3 O (Larvae only)
Volume filtered (m3) 167.8 157.9 167.8 157.9 One S-min' tow with a 0.75-in diameter heavy duty oceanographic plankton net (no. 00, 0.70 mm mesh). ' Range = total length in mm.
. _ . _ _. . . . - - _ _ _ - -- _ . . - . - .- - ~ -___ - _ _ _ _ _ _ _ _ . . - _
TA .E 56 . ICHTHYOPLANKTON CATCH PER UNIT EFFORT + AT LOCUST POINT I 31 AUGUST 1976 I , Sta. 8 Surface Sta.8 Bottom Sta. 28 Surface Sta. 28 Bottom Total Spectes Number Rango + + Number Range *
- Number . Ra ng e ' ' Number Range *+ Surface Gottom i
Fish Eggs Alosa pseudoharengus
- Aplodinotuc i ,_gt'unniens
- Carplodes cyprinus Catostomus commersoni -
Cypr .nja carptv Dorosoma cepedianum - Morone -
' hr.Yit_Ol% $
i Notropin 4 q g t3 inoides , N. i hudsonius Osmerus CD E $.D E Perca flavencens ) ] Pomoxis sp. Sti:>octedion v. vitroum Unknown
] TOIAL '
(Larvae ontv) O O O O 4 o l
, Volume ,
167.0 157.9 167.8 filtered (m3) I 157.9 i 1 0 One G-min tow with a O.75-in diameter heavy-duty oceanographic plankton net (no. 00, 0.70 mm mosh). l 4* Range = total length in mm. l -
190 APPENDIX F STOMACH ANALYSIS OF FISH COLLECTED AT LOCUST POINT, LAKE ERIE APRIL - NOVEMBER 1976
, -e
TABLE 57 SlOMACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Focus sterns g
.S o .
[ G 7 t.h . b u
= = .
t Ii E
# ( [* $
2 g I I E a 3
+ f a
8 3 *
=
g
! .g monui sp e . Lenoth wetoht 7, . g z $ .
(rnm) (c) 2 f E O f 3 2 f, 3 ! .g 9 8
- 7 .
8 8 g s i. $ >- t . e ;; 2 a - 54 ;
; I> 3 < B w 6 o al o.l o.l o a a O o n O I O }. O Aprit Moreww <gyt.ms 127 2h 3 3 9 122 grygils .uleranobbs 105 7 1 ti. ., u ,.r i . . ... . oS s 27 3 cr o N. tus tnu.es 121 1G l a N. t .esa d.,s 1:JS 11 00 320 (D N. tum!t.cuuim DG 11 Juu l' b7 4 b ns.h.ncuos llS S 152 10 1 Na he adonius 65 3 54 16 f*erca flavesi. ens 211 100 err.;,ty
,P t t ave t.u:ns 301 74 4 L ti.we;ccr.u 08 tl 8 20 76 29 305 F ve c i.u c.Spo.tes 105 11 2 I to Percopsis omiscamayca, tso 7 3 2 S 2 1 2Gy May N. .t r@ t.s tu at ons..s $15 10 30 2 1 b hiaisons.n 100 Il 14 75 1 1 N . tie =1:.or.lus 105 11 7 20 1 1 l *erc a flave..s ena 100 00 4 b flavescens 1tA2 60 b gvovena 142 32 1 1 I
TABLE 57 S70 MACH. CONTENT OF FISH COLLECTED AT LOCUST POINT ' APRIL - NOVEMBER 1976 Food items 11 1
$ = k
- a E
- g
" 3 5 .
- . i i E i i s 1 2 4 m
a I
. .5 y
3 4 l -e r y 4 r I { g y f e
,s 6 f
}s Len0th We toht f {. - c' j f. E Month ,
Species 7 !)
! I s !
c=> m : s -! s a i i e [ e e g u g o 6
=s 6
e 1 o y e o 2 o a
- ia a: at x r 2
t a o 4 I - April Mocore chrysops 127 25 Notropts attierirw>tdes 10$ 7
- N. othertnos<te s OS 5 f J, bi rP mte r) 121 10
$ hosts.ontos 105 11 N. htxt;ontes 00 ff g g hv), ontu1 o$ 6 M
$ ht=f u ton 0$ 3 Pecca (41ve:.cens 25t 10u L flavence 101 74 L riavercens 01 0 Percens gwo tes 105 tt to Pcecm>:.1= ornt r.comayeu . 60 7 6 May Notropts buttermlus 115 18 1 1 N loud:;onius 1C3 18 Nabend.onlus.
105 ,,11 Perca flaver.cens 100 00 8 4 P. flavosceva 102 00 5 E ftrove .ccrwi .142 32 15 g
. .- - - . . _- .- - .. - . .~ - - . - - _ _ . . - . . _ - . . - - . - .-- . . .-- _ .- .
I TABLE 37 1 l SlOMACH CONTENT OF FISH COLLECTED AT LOCUST POINT '
- APRIL - NOVEMBER 1976 +
4 1 < Fo./J l terns llt
~
I ! I h 4 . 4 s
. L 2o 2 .i. t i e o .
_f. .c. . t . . . . 2 3n ,' !: 3a E - I
, Month species Lcrigitt Wc tght e
{ n . } g' {' $ g 6 a i
~
(rmn) (0)
' 2 E
{ -g -
, --p ~
, 3 n
a
-. -{
E g * ( g 3 t ~
.; o E
s A d 6 3 5 6 A I -d I s j 8 I t 5 1, [% i k k % 4 l April Morone chrysops 127 25 4 j Notrcgs atswrtnoldes 105 7 j Na at he r.r.s ede s 95 6 A N. twal..onhos 121 10 3 } N. hise when 105 13 g N. ht =1 avnhn N 1i A j ,N; twat'.onhc. DS $ A
$ hut.onnes 6S 3 A i
l' ercs flaves cens 2tt 100 L flaver.cens 191 74 A
& flavescens 01 8 u
- Per*
- er.a c.sprsies 105 11 A
! Percops65 cen t scomaycus 09 7 p
)
I May Notropis tuatnontia 115 to g g B hantcontt.s 100 If ,
,Na heatsonius 103 , 11 A A Perca riavescens 100 00 1 b u i P. riaver. tens 102 bei g u j L flawr.cens 142 32 A ! ' A = 4. matt amoued ,
4 0m (noJorate asi.os.sst C = twgo on w d 1 4 4 i i
. _ - . . . ~ . . _ . _ _ - _ . . . . _ _ . . _ _ . . . . _ . . ._ . . _ . . _ _ . _ . _m... , . _ _ _ . _ _ _ _ . .__ ___.mm_ m_. _ . _ _
. .._._m i
TABLE 57 J S TOMACH CONTENT OF FISH COLLECTED AT LOCUST POINT a APRIL - NOVEMBER 197G i - Foon Itsms i i 5 8 u .
- c. I n =
2 . E $ a
- U o c . c N d . a b
< ? = *
- 9
& G *4
] 8 5 -,
4
, monm sc..c i.. t_.nsm weig,e 5 . ; = c g i' . . 3 [' t . g a l (mm) (0) !
- g } $ 8 f E 1 & { $ .k k S I{aI] lo O
4 3 $ $ 5 dl dl dl 5 3 3 j{ 3 5 $ O $ Jur. Aptc sirw ti.e. onnvite ns als 420 2 4 to5 3
& neierrtans 235 172 19 20
& m. cts 233 ILO II 1 30 24
& gr e n .t.to s 101 74 3 21 L3
& m anten2 I L*0 til 17 GF 30 g
]
6 ortevilens 141 30 4 2:a 16 Ic tatorus pinvt4 tog 200 2b2 g g k pinxtatog 251 140 3 13 19 60 7 L piiretatus 216 02 3 3 6 7 3
- j. L pinyt stus 192 76 1 3 S e i g h pinw taty US 10 0 15 21 8 k pinict.stos 71 5 2 1 17 g j, rk.tnvis einw rInr.4. ors 00 7 1 2 Perc a ri svesc ens 162 ol 2 12 1 5J3 to 5ttrostnmo n vitec.nn tug 62
. July Aplodenotus nnonsens $46 34 7 42 34 1 3
A. Or t=wsacos 140 32 4 47 es i 135 32
& g nnintens 3 55 10 1
, & gnanntens 134 2u 10 11 40 26 10 1
i
& qnentenn 1,30 20 4 3 G2 50 1 1
4 1 I i 9 )
. , -- . . . . .. - . _ ~ _ . . . . . - _ . - - - ...--.-a ~ . . . - - , ~ - -- ..--.
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Foort Itams II t . 2 . A 2 $
& 2 3 e .
_ . d i : s i I s 5 : a
-a -:s . 3 g r 4 , -
- % g ?
3
.t y p $ 7 e
q' :s I [. 9 MonU) Species Longth Wa tcht g - 1 ,} { 3 E o c j . 6
), R
! j 2
{1 Ea{ a: (mm) (c) i 1 $ ! -g 4 e 2 $ y a i f F f C a - h 3 2 4 E Z $
. [ . y : a 6 6" 6 o o a u x r < a G k I 1 Jura e'pto ifnetos crunntens 319 420 1
6 cironntens 235 172
& orsnntens 235 1M
& 3ronotens 102 . 74 2 2 i
& nr nntros 100 01 g
} & nrincinna 141 30 Oc tatu. oe. : s.ctatus 200 200 1 L punca..cri 251 140 4 2 L rarweatus 216 02 L Enctat..s 102 70 h purc entos ut 10 2 L ronc t eu; 71 S t e Not roni.: nehertnoldes OG 7 Ma_ flav. ecens 102 58 11:4rnt.tetlilir,) n vitrcum 100 62 July Ar.inefiantos nei=mlens 140 34
& nrisw% ns 143 32
& 3rsnwiens 133 32 , ,
l 6 <re.nniens , 134 20 g g
& ornemeens 130 2n t
I e
c t.' - ;' l-O)(0
*Ia ,. L H A etg ;, h CgguuA4bA0AUuA 444A A" 3p f I~ x: -[ $ - T IN ig 1 1 1 1 O 45 P .p ig 3
~ T t3p{x 1 S U *A! 6 C a)eef O 1 .- L .'Ig. A 1 T s n A 6 i e { l{_6i 2 1 r t 7 D9 Ji o
.},t 6 E1 F o
T R c~$;.ic C E E 7 1 5 { 5 [._6 L B E LM . IZ! 3c L OE fah-_6 B CV O .'I{ _ A A HN T S-I .i"!)e
- F L t 0204t 020200671 2 42200 s
FI R
- io )o '
275 41 1 7U364971 21 50 33322 O P w ac , TA n) N im s 0S5208 01 02d1 623 1 33004951 00540 E n 3221 1 1 2221097060 44 333 T . 1
- e. (m 1 1 1 1 1 1 1 N n O
s n n s e t s C te s tc e~ r n le
- n t tt n
n tu o s v H =. u a n n i r Lc t e t r e t C tc n s s , ,s ci e r<, A e p s en an u e n nn e e t e p u s s s nu u temt u n e n i v o sosm?un n n ie ic a te s l i i l i t t ea s c n _ t n a a e a f n v i i l M n nu s s
- n. w n n s r t r r e t
i. e t tc v tc: ni r et tt t, e n n n n n i m n ia in t i n e 0 t f r o e n nooJol n et n t a n n m o u ru wt pppppgc a s o i d o n o t ri ce e rt t s at 7 tc a r r r J3 s ni n S A &6&&&le EkELEN_P t oe i t S p lA&&&& aar v r eo o ._ a taw i rea t a d y m n or - n ue1 na o v n o ly
= = =
. u u AOC
, J J I
jil ; ;; ,
TABLE ~ 57 S'10 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 FrPM IRnu il 1 a u . (8' T A 5 7 *
- ti e .f.
; .il ,s
. . r 3 m ! i* . ,
, Month Spccles Lcroth watcht $ e e { j f . j f [. E I 3 ~
. Oaa) O) {o ! 3 o
3 i
- t[
C r f 1 1 I l : 3 {, -! hx ! t 9 } 3 4 2 w o al ol o.f c.l o a a 1 0 o e 5 i G S 3
.Alf con't. k aal.rus pie w-tatus 200 44 0 1 2 7b 112
( pur<tastri t t ts 16 14 4 3 103 220 6
- f. m( s at..s 03 0 4 7 3
paw o wi c ow./'or.** NJ 2JJ M. cory y1 2t,0 217 Lalinsuo.on n vitre sn 2M 16d g h h vitre san 233 122 q Aquat glodtnrat..s cpunntens 100 48 6 orwntens 1G2 SQ terrc, pes tu%c.nless 128 20
$ ha af sont. .s 187 16 b 3 14
& t .ru,..isr, 10d 84 sn Ay
& ht.scon. 4 108 10 3 4 43 g Pn.sson...$ 00 0 2 Perca flaver.cens 179 74 or pay
$ finvescens 864 62
$ flavescens 150 46 L flavescens 124 20 er.pty b riavercens 123 23
$ navnscens 72 4 304 1 l
l
TABLE 57 SlOMACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 F oo.1 prems il
. l' .
$ . 3 .
J " " 3 5 5 . d
" (-
l t 5 d l 3 5 r 2
. .J
- 5 3 .
m 9 2 e 2 t 1
- 3 $ f i t ? :- E = t 2 j
E
, Montn Spectco Lenotn watuht p r E J { g g?
- k }, g i (mm) (o) . : 3 3 ). ;5 11
. ( 3 E g 4 'c I E t u 9 - - -
t ? L 2 ; t s . 2 9 E .t n
- o 6 6 6 o o a a a a x t- < &
5 k
.luly cun't. Ictatunts purw t.itus 200 44
- 1. ge.weaton llo 16 2 2 2
[gwtat.7 05 8 1 1 1 2 M. co.vs ,g y- spa - 2G2 033 M. ctw v rg e 200 287 Sttgoston on n vitresen 2'A 160 Lv v e t er-sm 231 122 g August AIlostinotou S <ptawslens 100 40 1 1 3 1 2 6 A. c;nsviteru 102 f.,0 2 3 teseropss n .scontus 121 20 N. hiatront..c 117 10 . 1 1
& hsalannior. 106 14
& hid.or.ls t. 108 10
$ but och.s 00 0 P. rca flaver.cens 170 74 P. flavescens 164 .62
& flavescens 150 40
$ ,flave<.cens 124 26
, $ flaver. cons 123 22
$ thverr.or.s ,72 4 1 4
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Food items til I . u t . . 8 3 e 6 y C f a ?
- 5
- M enth Specics O t f a y 3 1 h t 2 3 a
- 1 *3 n
Lo,ngth Wolght M t
! {2
[ } 0 e b Il 3 { f* g *h l 8 A Fam) h . P . s ! $ i 2 2 P q 3 b 3 5 8 E $ h d
! I d I I 3 j u
j u S E l }a July con't. tctalmus punc tat.as 200 44 A E 06A tats 6 lib 16 1 1 g I . ft ext .its.a 05 0 A Mwa**m !!yr E - 262 23J
. 2B 211 4 e c bl. S!.'.CX121*1 Stsiot tc fia=7 v vitreim 253 160 1 A .s 2,3 L V8tretan o C O 238 122 @
2 13 Augmt Actodmetus greanniens 160 40 1 1 A-
& 3rsonnien"2 162 50 A
Ph>tr(fis ht=Juonites 121 20 A g hsatsotilus 117 10 A Q twalsoolos 100 04 g hoster,niot. 101 10 g h*= h mitrs A A 06 0 A A Mc_g,ttavcsme ns 179 74
& floveteens 164 , . 52 1 A
b flaver.cens_ 150 46 A b flaver.cens 124 20 P. flavo. cons. 123 22
*
- A
{'rlav.iscons 72 4 A = smatt amuind is = niodorata .nuant C = targo aamm t O e
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 . Fcal Itcens 1 C $ 8 Y d
* =
f + a ; 8 I u . I
- g -* ($
-
- g
. e f C 3 ? e i e ,
. Manth Species Length Wolgnt $ e a e $ j f e j f [u { o , 3
{ g (m) CD)
$o I 3 o e g' E E 6 le $
{ ~$ S$ [ i f 8 [' j
* $ e
- 3 'd 'e' e
y s e
< 2 w o o al al a=l o a a 0 0 7 g
O I O O Septerras- Oct.att rism reta.toues 2Gl 276 60 4b 00 210 24 >u (O Inret a elonus 245 212 1 3u8 2 Ph3treepis metherlmtales 63 4 1960 600 4 t.
$ r==htwuus 123 24 0 1 6 g bishme..s 105 12 2 1 1 3 t==sseetus 7u 4 3 23 8 1 1 30 g himnonius 73 3 20 760 50 e,0
$ healsonius 07 2 1 3 to 1 b Perca flavercens tuo 06 1
~P. fl.evcsce w 167 04 6 26 2 2 20 g flavescce.n 140 44 2
& ft.svescens tJG 32 =
, 1 P. flavesc ens 131 20 1 4 to
! ttrostc< tion g vttreisn 102 62
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Food items !! d d a " J" . J" g d g 2 . _ f j l 5 i i g 3 2 g d i a { -{ 5 s a [o ,> r l a-a "
, t --
2 y 1 e e 6 t s Mcruh Species Leng:h Walaht 3 f, 1 3 7 . } f fp
- 72
*f i ! e ii (mm) (0) L g $ , [. -f -p fc y k k 3 $ ( (
i r u a o 6 6 8 o 1 o t 2 a a 1 x
. . 2 e F ; g g e a r < a o < 1 -
Septembcc setahn tm neln. tor..o 2Gi ?7G 4 0 6 3 2 1 as s M L rebulo< ta th A rC1 ml *L .ite nr einoltho g 2 83 C3 212 4 9 h
& baxt.onlin 123 24 N. tuntsonata 103 12
& twal untos 70 4 S hi=J:ee.lvs 71 3-n to. icon..n or a a 1 Pecca flaver.cces 100 00 P. (1.wc r-un2 167 04 l b tiaver.ctor, 1 443 44 1 i b ftwc.cens a 139 32 P. finve r ccris 131 20 3 6 fitirostettion g vitectm 102 62 G
e
i r i , TABLE 57 , SlOMACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 1 P l j P'uod Itcrns Ill 1 u
. 3 . I i }u .
~
2 n
= .* t . .
i s 3
=
=
i e [ o t. 2 3a o n o r
! M ontn specto. Lencth wetoht t n 6
3 }s i: 1 2 . 3 3' y g f, 7 C n
,' ('"") (0) $ { -! $
i e $a $ h t ? b 4 0 g z n - u - t f. L r I c u e d
- f 6
f
- 6 6 r 1 0 I !
IL s IL E s E , Septomtur= letnise sg rint .loweg 208 27G g 2 1 A C Eelvric tic 245 212 4 Notrmes ggherinohtes G3 4 4 gg 123 u O
& butiv)itatt 24 M
' E hamst.nnite, 103 12 A 70 4 A j & hair.omus 71 3 A
- L A.teonios
! N. ba sismeto G7 2 Perca flavoscens 3u0 W A-167 A i L flavenc..ns 41 4 A L flavescens 140 44 , 1 j 130 32 A L tiawncens 20 i , & flaver.rens , 138 fituotte.ston 3 vitreten 102 62 1 t ; l 4
'Ad 6snalt ernsment u = rnuderate amourd j C = tarvo orno ant i
i 1 .i t i 1 I } l
TABLE 57 S7 OMACH CONTENT OF F ISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Food trems
.s .s r.
- c. :
.r a rn a
'd
. . y a 2 ( g t . .
Month species Lonoth Wolont $ . . E y i l
- f f f
{o , g g (mm) ce r 3 g y a y< {s g g e {. g g { 3 e 4 j x a .
% a e a 2 ;
y i 4.; 4 2 w, u o al o.f o.l o a a u o
? a o I O O Oct4A,ec le tatic es tv-tm.insies 227 t t.o b0 2 Moron == a;hrygs 105 72 1 M. c.twy* ,n 40 2 2 1 Iti 2 gtays 6 **Ia ine tmido s IL13 in DO 357 IO l g N. ht = P.ne.6. a 117 lu lb 2 4 4 1 102 g g tuata.e sis . 113 13 1 2 1 23 O
$ hintsue Am 100 12 4 7 11 3 e
, i N. tuassont**s 02 4 40 0 2 1 11 ,2 Na ta=F.tv eies 73 3 15 34 0 Pecc a flav, scens 214 12u - era pty L reav.n.cens 173 bu eri sty P. flaw scens 163 59 1 L ,fl.wi.scs ris 148 34 4 6 1 L riavesrcem UO b t Percopsis c nilscomaycta. 75 4 114 FA)vembor* Notropis eghertnotdes OG ' 6 4 Ng othertresdos ' 45 1 3 1
,Na tw=J or.liis 105 12
. Osmeries rvud.w 00 2 13 1 20 14 5 64
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Food ltomt. Il _ d J*
= d . J d
- s
- 3 2 .
r a f d a E , 5 g a m . . d. : p 2
$ 8 - e J
-; 2
- 5 i 6
)
$- _g i a h c 2 >-
3 g 3 c I T c
$ F F c C ,
e E d Monm species Lcncth Weton t 3 ;- E . p p g 3 I $ g g ; (mno (a) ! t
- f, 3
h 5 e ,
-f g 8 1
I 2 3 s 1 p "h 2$ t e
, e e o, x
f . g 3 o 8 6< 6 o a a a u r < a d I I .5 Octcbec letahru 6 artwlosus 027 t t,0 a t*% rom c',yyty 1b3 72 to 1 1 1 M. rew v sp1 49 2 103 IO t*> trope a ite.crinoides ,O t o. his t'.volu a. 117 10 1 1 1 1 f4 he.isn re ni .e 110 1'a 1 1
& hin t>osui,s 1(r3 12 ti
& ht.ct .a d=2s 02 4 1 1 1 73 3 1 2
& t.semona.9 Pe rc . riaveucens 284 12u b tlavcocens 175 Ou b riavc<,ccos 1b3 59 14l 34 2 B _ftave:.cens L tlavescenr. 80 5 Percopsis omisccwnaycun 75 4 1 thomber tJotrop6s otherinnt tes 06 6 1 tJ. Othce6not&S
- 45 1 8
5 hsme:ontos 10S 12 O .mcri.s nu,c.1w (10 2 e
TABLE 57 S70 MACH CONTENT OF FISH COLLECTED AT LOCUST POINT APRIL - NOVEMBER 1976 Food items !!I l, u
. t .
ka i = -i t . e. : .a n. . Month species Lenoui (mm) walobt ce t {
.k k 5 f g 3
I 5
?
{. k f ., {*
, ! [
2 o 1
~ -! .,
a E --e -f
' g-e A a 6
5 6 A 1 a 1 ! L i k 1 k 1 k Oc tct.s t- tetatteus mtx.lo a.s 227 too 1 1 13 Mcrone Chry% ops 16$ 72 304 g 6 1 A M. chryr.cos 40 2 NotrtOls atterinoles 10J 0 4 .1 1 A tJ. hs *4 wit. en 117 1G G 1 in A N. Diss traw isus 11S 15 0 2 A g 109 12 1 A A g Q hs =Jt.c.e ih r. N. hearcmit es 02 4 A A
~ti =ne .umus 73 a Pecca flaw scens 214 100 L (tav ;scern 175 60 L fla escens 163 b9 A A b flavescena 141 34 1 A
P. flavescens fio 6 brcopsite cenisccanaycte. 75 4 A l November Notropis atherinoistos 00 0 A N. atherlacides ~ 45 1 4 A k twassontone 105 12 Ocmcros mordau 60 2
- A = meniall anux.e4 D = rnudarato anwas4
. C = largo anwd t
9
X J _U_ 0 tO J
>O 5 >T l
i l}}