ML20033A180
| ML20033A180 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/30/1979 |
| From: | NORMANDEAU ASSOCIATES, INC. |
| To: | |
| Shared Package | |
| ML20033A174 | List:
|
| References | |
| IX-2, NUDOCS 8111240836 | |
| Download: ML20033A180 (42) | |
Text
_,
l g,
l SEABROOK ECOLOGICAL STUDIES JULY THROUGH DECEMBER 1977 FINFISH TECHNICAL REPORT IX-2 Prepared for PUBLIC SERVICE COMPANY OF NEW HAMPSHIRE Manchester, New Hampshire Prepared by NORMANDEAU ASSOCIATES, INC.
Bedford, New Hampshire JUNE 1979 8111240836 8111j~s 7
~_
t o
il-TABLE OF CONTENTS j
- PAGE
1.0 INTRODUCTION
1 2.0 METHODS........................... 3 4
2.1 OTTER TRAWLS..........*............ 3 2.2 G I L L N ET S....................... 3 2.3 BEACH SEINE...................... 5 2.4 ICHTHYOPLAN KTON.................... 5 3.0 RESULTS........................... 6 3.1 OTTER TRAWL...................... 6 3.2 G I L L N ETS......................
10 3.3 B EAC H S EI N E 10 3.4 ICHTHYOPLAN KTON...................
16 4.0 DISCUSSION........................
19 5.0
SUMMARY
22 i
APPENDIX,........................
23 1
i f' ^
1 i
t r-I r
i I-I
[
._,,w.',
,,.--,~,..,-,-r-,,e
.- -~~~-~~
,,<e
" - - - ~ *
"~w' ce * ' * * ' ' ' * ~ ' ~ ' ' '
~~'~' ~~
s LIST OF FIGURES PAGE 2-1.
Finfish sampling stations................. 4 LIST OF TABLES PAGE 3-1.
Species rank for fishes collected in otter trawls..... 7 3-2.
Number of species and individuals collected per month at each otter trawl transect............... 8 3-3.
Catch per effective unit effort and percent of total catch by transect of dominant species collected in trawls. 9 3-4.
Species rank for fish collected in gill nets......
11 3-5.
Catch per effective unit effort and percent of total catch by transect of dominant species collected in gill nets..........................
12 3-6.
Numbers of species and individuals collected per month at each gill net station................
13 3-7.
Species rank for fishes collected in beach seines....
14 3-8.
Number of species and individuals collected per sample period at each seine station..............
15 3-9.
Abundance summary table for dominant fish eggs and larvae.17 3-10.
Mean abundance of fish eggs and larvae by sample date at Transects 1, 2 and 3 in the Hampton-Seabrook area..
17 4-1.
Co..iparison of major finfish species collected during the July-December 1977 program with trends established during the 1975/76 and 1976/77 prcgrans.........
20 ii
SEABROOK ECOLOGICAL STUDIES JULY THROUGH DECEMBER 1977 FINFISH TECHNICAL REPORT IX-2
1.0 INTRODUCTION
Since 1969, finfish studies designed to establish a pre-operational data base of species occurrence, abundance and distribution have been conducted in the Hampton-Seabrook Estuary and near-shore waters (NAI, 1971, 1972, 1973, 1974). A formal preoperational program was initiated in July 1975, resulting in two July-June Annual Reports (NAI, 1977, 1978). This report, compiled to shift subsequent reporting periods to a January-December annual cycle, presents larval and adult finfish results from July through December 1977 and includes comparisons to the two previous years of formal preoperational monitoring.
Based on results of this and previous studies by NAI, the ichthyofauna of the New Hampshire coast are considered in three groups:
resident species, summer migrants and winter migrants. Dominant resident species include yellowtail flounder, cunner, winter flounder, sculpins, ocean pout, radiated shanny, seasnails and skates. Migratory species include Gulf of Maine residents that perform inshore-offshore migrations at various times and species that are only seasonal inhabitants of the Gulf of Maine. Summer migrants are generally present from April or May through November or December, and include hake, pollock, mackerel and silver hake. Winter migrants, such as herring and smelt, usually appear in October and remain through June.
The number of species utilizing New Hampshire coastal waters is generally highest during the transition periods of October through December, and April through June when resident species, summer migrants, and winter migrants co-occur.
1
2 2
Fish eggs have a definite seasonal pattern of abundance and
(
succession in New Hampshire coastal waters: densities are high durAng spring and early summeg and_ low in winter. Eggs of cunner, American plaice, silver hake, and fourbeard rockling dominate the sununer fish-egg assemblage; while eggs of the cod / haddock complex and pollock are dominant during winter. Seasonal abundance patterns of total fish larvae have been-less clearly defined. Sand lance and American plaice larvae dominate late winter and spring assemblages, and are succeeded during sumer by cunner and fourbeard rockling. Other summer dominants include yellowtail flounder, menhaden, silver hake, hake and witch.
ficunder. During fall and early winter, dominant taxa include larvae of herring and pollock, and to a lesser degree, fourbeard rockling and sand lance.
M-
~
=
I' 3
w
'e
.'t s
2.0 METHODS From July throuch December 1977, finfish populations (eggs, larvae, juveniles and adulta) were sampled in the Hampton-Seabrook estuary and offshore waters as part of the year-round finfish sampling program. Otter trawls and gill nets were employed once monthly at three sampling stations (each method) in the offshore region.
Ichthyoplankton sampling was conducted in conjunction with macrozooplankton surveys'at three offshore locations. Samples were taken twice monthly during months of high plankton density and once monthly during the remaining months. Estuarine finfish populations were sampled with beach seines at three stations twice monthly from July through November. Sampling stations are presented in Figure 2-1.
4 2.1 OTTER TRAWLS Four (4) replicate otter trawls were taken at night along Transects 1, 2 and 3 (Figure 2-1) using a 9.2 m shrimp trawl with 3.8 cm (1.5 inch) nylon mesh body and fitted with a 1.3 cm (.5 inch) mesh cod end liner. The net was deployed and towed at 900 rpm (approximately 3 kn) for 10 minutes; replicate tows were taken in opposite directions.
2.2 GILL NETS 9
Nets were set for three consecutive 24-hr periods per month at l
all three stations (Figure 2-1).
Each station consisted of paired permanent substations, one parallel to and one perpendicular to the isobath. Each substation consisted of two 30.7 x 3.7 m (100 x'12 ft) nets with mesh sizes of 2.5, 5,10 and 12.5 cm (1, 2, 4, and 5 inches) :
one was hung at the surface and one at approximately 3 m off the bottom.
4 j
The nets were positioned on permanent buoys and set and tended by SCUBA divers.
4 i
L
i SEABROOK PLANT 4
C0 ORDINATE 70 50' 48' I
a-
\\
70'46' i
fYOI 42*S6' - !
',/
- 42o56
- )
?
l NAUTICAL MILES f
6I O l
2 KILOMETERS
'8 ab
. h*% d e INTAKE SITE art 0-3
',j!$ ::: DIFFUSER SITE
/
G-C 1.<
1 i f.as
~ ' ~
i..
i Y
i i.
55' -
T i
j!!!Y,'
' 55
/
t
- ~
,/
O hj I -3 '.
s HAMPTON RIVER S-1 ej i
,.. s
.se
's i oll g
ei
.3 l ',
i\\
s 54' -
s,
.., )
i
~3 54' l
S-2 '~,
i.
-(: :
l
.'~~- ~,
f,
%+
~ ' ~, ' -
- ~~
r,<3 S-
, ::- t,,.'r. ' -
..2
\\
p r-, ' ur,
- . ' ~
. ~%.. s.
If,,l
... ' G - B
"5
- [.h,/ /
I-2 h
'EIrjjf i
'. 0-2
., j
\\
~
53' -
c
- 4.
- is,
- 53'
+':i'.;!?
s,
\\
l
>N
.iiik sjh!'g i
\\
i 3;!!!I i
/
/
')
' ::9
?>;.-
1
,,, j
- fiw
.qm.
Q{:lg j,
l
./
}Yl@
.i
,{
\\.,
}
- E+.
j!!7 %.
l.
G-A Hi kl
~
42*52' _
,4!!!;4, M
'e so eo i.,,,,.
s tei-g i !
.i o ' [V
+;!jj{
l j
- S::-
jj
{
' fsf ji, \\
r)
'u:
i 0-1
, mei:,
!!sjiii 4.-
j l
l l
5 1
70'50' 48' 70'46' 1
G = GILL NET SETS S = SEINE PAULS I = ICHTHY 0 PLANKTON TOWS 0 = OTTER TRAWLS Figure 2-1.
Finfish sampling stations. Seabrook Ecological Studies, July through December 1977.
5 2.3 BEACH SEINE Seine samples were collected twice monthly July through November at Stations S-1, S-2 and S-3 (Figure 2-1).
Two (2) replicate seine hauls were taken with a 30.7 x 0.9 m (100 x 3 ft) bag seine. The outer wings of the seine were 2.5 cm ( 1 inch) mesh (bar measure);
the nylon bag was 2.5 m (8 ft) square with 1. 3 cm (.5 inch) mesh (stretch measure).
2.4 ICHTHYOPLANKTON Four (4) replicate stepped-oblique plankton tows for fish eggs and larvae were conducted at night along Transects 1, 2 and 3 (= ichthyo-plankton Transects 6, 5 and 2, respectively) using a 1 m (3.3 ft) diameter 505 y mesh ring net (Figure 2-1).
Tows were ttken twice monthly in July, August and December and once monthly September through November.
Twice monthly tows were taken because of high egg and/or larval densities historically reported in the study area during those months. The net was lowered with an attached depressor to a depth approximately half that of the bottom depth and towed at 2-3 kn.
Speed was varied at two-minute intervals to sample a range of water depths. The standard 10-minute tow was reduced to 5 minutes during periods of high biological productivity to minimize net clogging. Volume filtered was measured with a calibrated General Oceanics digital flowmeter mounted in the net mouth.
Ichthyoplankton samples were presorted for eggs and larvae.
When, upon visual inspection, samples were found to contain many more than 200 eggs and/or larvae, the sample was split with a Folsom plankton splitter so that each subsample contained approximately 150-200 eggs and/or larvae. In most cases larvae were identified to species. Some eggs, however, were more difficult to identify, and were grouped with eggs of similar appearance (e.g., cunner [Tautogolabrus adspersus) with yellowtail flounder [Limanda ferruginea]).
Identifications were made using a dissecting microscope at 10X - 80X magnifications.
6 3.0 RESULTS Fifty-nine species of juvenile and adult finfishes, and twenty-nine species of fish eggs and larvae were collected in the Hampton-Seabrook area from July through December 1977. Eggs and larvae of three species were found with no older life stages recorded; combining all life stages, a total of 64 species from 48 genera were found (Appandix Table 1).
3.1 OTTER TRAWL Ctter trawls captured 4,395 fish representing 41 species during the six-month period (Table 3-1). Numerically dominant species included Urophycis spp. (hake) and Limanda ferruginea (yellowtail flounder) followed by Myoxocephalus octodecemspinosus (longhorn sculpin) and Pseudopleuronectes americanus (winter flounder); collectively these species comprised 76 percent of the total otter trawl catch. Though species richness was similar among transects, catch abundances varied:
at Transect 2 the catch was considerably lower than Transects 1 and 3 Table 3-2). Monthly variations in species richness and abundance within transects were small.
Species ranking and catch abundance of individual species varied among the three transects (Appendix Tables 2, 3 and 4). At Transects 1 and 3, which are located further offshore and in deeper water than Transect 2, catches per effort of the three most abundant otter trawl species, Urophycis sp., L. ferruginea and M. octodecemspinosus, were notice-ably greater than at Transect 2 (Table 3-3).
At Transect 2, P. americanus was the most abundant species; it was the only dominant species collected in higher numbers at this transect than at either of the other transects (Table 3-3).
7 i
TABLE 3-1.
SPECIES RANK FOR FISHES COLLECTED IN OTTER TRAWLS.
SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBEP. 1977.
TOTAL.
SPECIES NUMBER Urophycis sP.
1,656 37.7 Limanda ferruginea 1,001 22.8 Myoxocephalus octodecemspinosus 384 8.7 Pseudopleuronectes americanus 3:8 7.2 Merluccius bilinearls 183 4.2 Raja erinacea 148 3.4 Melanogrammus aeglefinus 139 3.2 Scophthalmus aquosus 87 2.0 Macrozoarces americanus 86 2.0 Osmerus mordax 81 1.8 Gadus morhua 58 L.3 Pollachius virens 58 1.3 Syngnathus fuscus 33 0.8-Raja radiata 32 0.7 Hemitripterus americanus 29 0.7 Paralichthys oblongus 21 0.5
~
Alosa pseudoharengus 10 0.2 Urophycis chuss 8
0.2 Aspidophoroides monopterygius 7
0.2 Pholis gunnellus 6
0.1 Raja sp.
6 0.1 Stenotomus chrysops 6
0.1 Raja binoculata 5
<0.1 Myoxocephalus scorplus 4
<0.1 Microgadus tomcod 4
<0.1
)
Tautogolabrus adspersus 3
<0.1 Clupea harengus 2
<0.1 Cyclopterus lumpus 2
<0.1 l
Liparis sp.
2
<0.1 l
Urophycis regius 2
<0.1 Lophius americanus 2
<,0.1 G1yptocephalus cynogiossus 2
<0.1 Raja eglanteria 2
<0.1 Myoxocephalus aenaeus 1
<0.1 Liparis atlanticus 1
<0.1 Liparis 11 paris 1
<0.1 Enchelyopus cimbrius 1
<0.1 Scomber scambrus 1
<0.1 Squalus acanthus 1
<0.1 Ulvaria subbifuicata 1
<0.1 Prionotus carolinus 1
<0.1 Total 4,395 100
TABLE 3-2.
NUMBER OF SPECIES AND INDIVIDUAL 5 COLLECTED PER MONTH (TOTAL OF FOUR REPLICATE 10-MINUTE TOWS)
AT EACH OTTER TRAWL TRAtlSECT (1, 2 AND 3). SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
1 TRANSECT 1 TRANSECT 2 TRANSECT 3 COLLECTION DATE
- SPECIES # IllDIVIDUALS 8 SPECIES # INDIVIDUALS
- SPECIES # INDI/IDUALS 7/14 13 640 11 71 14 376 8/18 15-484 12 136 15
'363 9/28 16 165 14 93 17 308 10/18 14 375 12 92 14 351 11/16 13 193 13 82 13 144 12/29 13 215 10 55 19 252 l
TOTAL 28 2072 25 529 30
, 94 At Transect 2, tow duration was reduced to five minutes for all replicates during July and one replicate during October due to clogging by algae.
I I
l l
9 TABLE 3-3.
CATCH PER EFFECTIVE UNIT EFFORT (10 min.) AND PERCENT OF TOTAL CATCH BY TRANSECT OF DOMINANT SPECIES COLLECTED IN TRAWLS. SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
TRANSECT 1 TRANSECT 2 TRANSECT 3 DOMINANT TAXA C/E
% TOTAL C/E
% TOTAL C/E
% TOTAL Urophycis sp.
33.7 39.0 6.2 23.3 30.2 40.4 Limanda ferruginea 26.2 30.4 2.4 8.7 13.6 18.2 Myoxocepha1us octodecemspinosus 7.6 8.8 1.3 S.5 7.2 9.6 Pseudopleuronectes americanus 3.8 4.3 12.6 31.8 2.5 3.3 C/E = catch per affective unit effort
% Total = percent of total catch by transect
10 3.2 GILL NETS A total of 3,638 individuals representing 22' species were collected in gill nets from July through December 1977 (Table 3-4).
Numerice.lly dominant species included Clupea harengus (herring), Merlucclus bilinearls (silver hake), Alosa aestivalis (blueback herring)- and Scomber scombrus (mackerel); collectively these species comprised 88 percent of the total gill net catch, and were dominants at each gill net station Crable 3-5).. The total number of speci - ollected at each transect varied monthly. Overall, similar nup af species were collected at Stations B and C, and fewest at Station A Crable 3-5).
Total catch was greatest at Station C and similar for Stations A and B.
Catch abundance peaked at all statior.s during October, due mainly to high numbers of C. harengus and N. bilinearls (Appendix Tables 5, 6 and 7). Fewest species and lowest abundances occurred during September.
Overall, surface gill nets collected higher numbers of fish at each transect than near-bottom nets (Table 3-6). Dominant species that were collected in higher numbers by near-surface nets ware C. harengus, A. aestivalis and S. scombrust N. bilinearls was more c>merous in near-bottom nets (Table 3-5).
Differences in species richness by depth were generally small (Table 3-6).
3.3 BEACH SEINE A total of 17,399 individuals representing 25 species were collected in beach seines from July through November 1977 Crable 3-7).
Menidia menidia (silversides) were the most abundant species, comprising 60% of the total seine catch. The four top-ranked species accounted for 90.8% of the total.
Though variable, species richness was generally highest from July through early September and declined thereafter Crable 3-8). Catch
11 TABLE 3-4.
SPECIES RANK FOR FISH COLLECTED IN GILL NETS.
SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
TOTAL SPECIES NUMBER Clupea harengus K 1,339 36.8 Merluccius bilinearls 976 26.8 Alosa aestivalis 520 14.3 Scomber scombrus 354 9.7 Pollachius virens 109 3.0 Brevoortia tyrannus 103 2.8 Urophycis sp.
87 2.4 Gadus morhua 39 1.1 Alosa pseudoharengus 33 0.9 C1upeid 20 0.5 Tautogolabrus adspersus 19 0.5 Osmerus mordax 11 0.3 Squalus acanthias 11 0.3 Myoxocephalus octodeceaspinosus 7
0.2 Mustelus canis 2
<0.1 Peprilus triacanthus 2
<0.1 Scophthalmus aquosus 1
<0.1 Hemitripterus americanus 1
<0.1 Myoxocephalus sp.
1
<0.1 Lophius americanus 1
<0.1 Pomatomus saltatrix 1
<0.1 Prionotus carolinus 1
<0.1 Total 3,638 100.0 l
- -... - _ _. - - _ _ _. -. -. _ -, -. _. _,.. ~. -. - - - -. - -,. - -,,,,. -- --
_.-,m---
TABLE 3-5.
CATCH PER EFFECTIVE UNIT EFFORT (24-hr set) AND PERCENT OF TOTAL CATCH BY TRANSECT OF DOMINANT SPECIES COLLECTED IN GILL NETS. SEABROOK ECOLOGICAL STUDIES JULY THROUGil DECEMBER 1977.
i 1
TRANSECT A TRANSECT B TRANSECT C DOMINANT TAXA DEPTH C/E 5 TOTAL-C/E
% TOTAL C/E
% TOTAL S
34.3 55.6 26.4 56.7 20.9 32.3 Clupea harengus B
,4.1 15.5 5.7 21.0 5.5 16.4 Total 19.2 43.6 16.1 43.5 13.2 27.0 S
7.5 15.2 7.3 12.6 9.6 14.8 herlucclus bilinearls B
11.7 55.5 16.0 46.8 17.5 52.7 Total 9.6 27.3 11.7 25.2 13.6 27.7 S
4.5 7.3 7.5 12.9 29.2 36.1 Alosa aestivalls B
0.3 1.3 1.0 2.9 0.8 1.8 l
p.
l Total 2.4 5.5 4.3 9.2 15.0 24.4
=
S 8.8 17.8 5.4 11.6 8.0 9.9 Scomber scombrus B
C.7 3.5 0.7 2.4
.0 4.8 Total 4.8 13.5 3.0 8.2 5.0 8.2 j
l l
l C/E = catch per effective unit ef fort
% Total = percent of total catch by Transect l
1 J
TABLE 3-6.
NUMBERS OF SPECIES AND INDIVIDUALS COLLECTED PER MONTH AT EACH GILL NET STATION (TOTAL OF TilREE 24-ilR SETS PER STATION). SEABROOK ECOLOGICAL ST!JDIES, JULY THROUGli DECEMBER 1977.
STATION A STATION B STATION C COLLECTION DATE DEPTH
- SPECIES # INDIVIDUALS
- SPECIES # INDIVIDUALS
- SPECIES # INDIVIDUALS S
3 98 6
64 8
112 7/13 B
4 133 4
111 5
157 Total 5
231 10 175 9
269 S
5 78 5
65 3
57 8/10 B
5 56 5
36 4
24 Total 6
134 8
101 5
81 S
2 10 3
10 3
37 U
9/14 B
3 7
3 13 7
60 Total 3
17 4
23 8
97 S
7 398 7
407 9
289 10/12 B
10 107 10 134 9
162 Total 10 505 10 541 11 451 S
6 80 6
74 5
96 11/16 B
3 3
9 56 7
72 Total 6
83
-10 130 7
168 S
5 82 5
79 3
379 12/30 B
4 11 5
60 6
24 Total 7
93 7
139 7
403 S
11 741 12 699 11 654 Total B
11 317 14 410 13 499 (all months)
Total 14 1058 18 1109 17 1153
- S = surface, B = Bottom
14 TABLE 3-7.
SPECIES RANK FOR FISHES COLLECTED IN BEACH SEINES.
SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
TOTAL SPECIES NUMBER Menidia menidia 10,440 60.0 Fundulus sp.
3,725 21.4 Osmerus mordax 898 5.2 Pungitius pungitius 730 4.2 Fundulus majalis 327 1.9 Fundulus heteroclitus 322 1.9 Pseudopieuronectes americanus 274 1.6 Alosa pseudoharengus 250 1.4 Ammodytes americanus 219 1.3 Alosa aestivalis 87 0.5 Liopsetta putnami 30 0.2 Urophycis sp.
25 0.1 Gasterosteus aculeatus 21 0.1 Clupea harengus 16
<0.1 Salmo trutta 11
<0.1 Myoxocephalus aenaeus 5
<0.1 Syngnathus fuscus 4
<0.1 Tautogolabrus adspersus 3
<0.1 Salmo gairdneri 3
<0.1 Scophthalmus aquosus 2
<0.1 Myoxocephalus scorpius 2
<0.1 Microgadus tomcod 2
<0.1 Alosa sapidissima 1
<0.1 Myoxocephalus octodeceaspinosis 1
<0.1 Peptilus triacanthus 1
< t i.1 Total 17,399 100.0 f
e-a u.
- ~
+-
O TABLE 3-8.
NUMBER OF SPECIES AND INDIVIDUALS COLLECTED PER SAMPLE PERIOD (TOTAL OF TWO REPLICATES) AT EACH SEINE STATION (S1, S2 AND S3). SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
STATION S1 STATION S2 STATION S3 COLLECTION DATE
- SPECIES # INDIVIDUALS
- SPECIES # INDIVIDUALS
- SPECIES # INDIVIDUALS 7/07 7
545 6
130 8
13 7/21 4
21 8
2811 6
155 8/02 7
441 7
82 9
112 8/22 7
390 5
678 3
204 9/01 9
1149 6
1349 9
1504 9/19 4
289 3
263 6
210 9/30 4
258 6
463 6
1102 10/21 4
162 4
135 3
63 11/02 3
468 2
6 5
945 5
11/21 2
7 1
12 5
3432 TOTAL 15 3730 14 5929 21 7740 n
e a
16 abundance fluctuated considerably by month and station as a result of isolated peak catches of dominant species (Appendix Tables 8, 9 and iv,.
Menidia menidia was collected throughout the 6-month period with peak -
catches varying by station between September and November. Highes*;
ccacentrations occurred at Station S-2 during early September and at Station S-3 during late September and November. Though Fundulus sp.
ranked second overall in seine hauls, high concentrations were collected only twice during the six-month period, i.e.,
Station S-1 during early September and Station S-2 during late July. Similarly, O. mordax was j
the third most abundant species but occurred in high concentrations only once during the six-month period, i.e., Station S-3 during early September.
The fourth ranked species, Pungitius pungitius, occurred in peak concen-trations during early (Station S-1) and late July (Stations S-2 and S-3).
Over all months, species richness and total abundance.was greatest at Station S-3, located nearest the Hampton-Seabrook estuary (Table 3-8).
3.4 ICHTHYOPLANKTON Thirteen fish egg taxa and 24 species of fish larvae were identified from ichthyoplankton collections in the study area between July and December 1977 (Appendix Table 1). Numerically dominant fish egg taxa re Urophycis sp., Labrid/Limanda (cunner /yellowtail) and M.
bilinear 1s (Table 3-9).
Dominant fish larvae were Tautogolairus adspersus (cunner), Enchelyopus cimbrlhs (fourbeard rockling), C. harengus and M.
bilinearls Crable 3-9). For future reference, eggs and larvae were ranked by biological index values (Appendix Tables 14 and 15).
During the study period, fish eggs were most abundant from July through early Septemoer; no consistent spatial trends in total density were apparent Crable 3-10).
Urophycis sp., M. bilinearls and Labrid/Limanda comprised the major portion of the fish egg density during this period (Appendix Tables 11, 12, 13).
Collected in moderate abundances during summer and early fall were eggs of E. cimbrius, G1yptocephalus cynoglossus (witch f1ounder), Scophthalmus aquosus
17 1
j i
3 TABLE 3-9.
ABUNDANCE (#/100J m )
SUMMARY
TABLE FOR DOMINANT FISH EGGS AND LARVAE. SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
EGGS TRANSECT 1 TRANSECT 2 TRANSECT 3
% OF 5 0F
% OF TAXA I
MAX - DATE TOTAL I
MAX - DATE TOTAL i
4X - DATE TOTAL Ursphycis sp.
11,714 53,133 - 7/20 48.2 7,235 35,468 - 7/06 31.7 6,497 24,992 - 7/06 38.0 1abrid/Lisanda 6,169 49,115 - 7/06 25.4 9,713 75,903 - 7/c6 42.6 4,431 21,837 - 7/06 25.9 serlucclus bilinearls 5,701 18,586 - 8/03 23.5 4,827 16,443 - 7/20 21.2 5,246 22,054 - 8/03 30.7 LARVAE TRANSECT 1 TRANSECT 2 TRANSECT 3 i
10F
% OF
% OF TAXA I
MAX - DATE TOTAL T
MAX - CATE TOTAL T
MAX - DATE TOTAL rautogolabrus adspersus 122 486 - 7/20 29.6 248 1,250 - 7/20 35.2 224 884 - 8/23 24.6 rachelyopus ceinbrius 46 115 - 8/03 11.1 105 548 - 7/20 14.9 179 574 - 8/23 19.7 clupea harengus 55 475 -11/01 13.4 92 817 -11/01 13.0 158 1,408 -11/01. 17.4 Nerluccius bilinearls 68 262 - 8/23 16.5 85 476
'/20 12.1 97 574 - 9/07 10.7 a
3 TABLE 3-10.
MEAN ABUNDANCE (#/1000 m ) 0F FISH EGGS AND LARVAE BY SAMPLE DATE AT TRANSECTS 1, 2 AND 3 IN THE HAMPTON-SEABROOK AREA. SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
EGGS SAMPLE DATE STATION $
7/6 7/20 8/3 8/23 9/7 10/4 11/1 12/15 12/27 I
t 1
71,800 70,000 32,100 26,000 18,200 453 176 39 351 24,300 2
125.300 37,800 16,400 6,550 17,800 230 108 31 367 22,800 7
58,500 37,000 29,400 7,050 21,400 194 70 45 67 17,100 l
I 85,200 48,300 26,000 13,200 19,100 292 118 38 262 LARVAE i
SAMPLE DATE STATIONS 7/6 7/20 8/3 8/23 9/7 10/4 11/1 12/15 12/27 i
1 361 957 564 478 652 18 495 79 97 411 2
847 2,786 244 453 854 3
838 192 128 705 3
1,250 1,316 427 2,267 1,268 6
1,418 174 59 909 j
I 819 1,700 412 1,100 725 9
917 148 95 A
1 l
i 18 (windowpane) and S. scombrus. Egg densities were lowest during November and December when P. virens and Gadus /Melanogrammus (cod / haddock) were the only fish egg taxa collected in appreciable densities (Appendix Tables 11, 12 and 13).
Mean densities of fish larvae were generally high from July through September (Table 3-10) when larvae of T. adspersus, E. cimbrius, and N. bilinearls were most prominent (Appendix. Tables 11,12 and 13).
Glyptocephalus cynoglossus, Ulvaria subbifurcata (radiated shanny), S.
aquosus and L. ferruginea were also important during this period.
Larval densities declined sharply during-October, but increased again during November due to high densities of C. harengus. Densities declined.
during December when P. virens and Ammodytes americanus (sand lance) comprised the major portion of the total density. Fish larvae were usually most abundant at Transect 3 and least abundant at Transect 1 (Table 3-10).
19 4.0 DISCUSSION Table 4-1 compares spatial and seasonal distribution of juve-nile and adult finfish collected during the 1975/76 and 1976/77 finfish programs with data collected during the July-December 1977 program.
Distribution of fish among the various sampling stations was consistent with previous years. For most species captured by otter trawl, highest abundances occurred at the deeper, offshore transects,1 and 3; while P.
americanus, was most abundant at Transect 2.
Gill net and seine catches were more evenly distributed among stations: highest total gill net catches occurred at Station C and total seine catches at Transect S-3.
Monthly abundance patterns were consistent with earlier years for the majority of dominant species (Table 4-1). Although timing and magnitude of peak occurrences of A. aestivalis, A. pseudoharengus and P.
virens varied somewhat among years, the variability is expected due to the migratory nature of the fish and to the temporal spacing of sample collections (once or twice monthly). Catch-abundance of finfish collected in otter trawls was within the range of previous years; however, several species collected in gill nets and seines occurred in numbers 2-4 times greater than during the same period in 1975 and 1976 (Table 4-1).
Species collected in higher abundances by gill nets included C. harengus, M. bilinearls, A. aestivalis and P. virens. Species collected in higher abundances by seine included O. mordax and P. americanus (Table 4-1) as well as A. americanus and P. pungitius.
For several species, catch differences between surface and bottom nets were observed in 1977 program data. Clupea harengus, A. aestivalis and S. scombrus were all more abundant in surface nets.
Scomber scombrus catch continued a pattern observed in previous years, whereas C. harengus and A. aestivalls surface / bottom catch differences had been inconsistent in previous years. Three species, M. bilinearls, P. virens and Urophycis sp., were collected in higher abundances in bottom than in surface nets in 1977. All three continued patterns established in 1975 and 1976.
e TABLE 4-1.
COMPARIS0N OF MAJOR FINFISH SPECIES COLLECTED DURING Tile JULY-DECEMBER 1977 PROGRAM WITil TRENDS ESTABLISHED DURING THE 1975/76 AND 1976/77 PROGRAMS, SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977e (51A8tl5HED TRINDS IRLM 1915/16 AND 1916/77 STUDIES PRIMARV COLLECTION SPATIAL SLA50NAL COMPARISON OF JULV THR0tTJt DECEMBER 1911 DAIA SPECl[5 METHOD Dl51RIBul10N DISTRIBUTION WITP R[$ ULT 5 FROM 1975/M At&D 1976/77 Alome Gill Net h consistent Jtstri-Must numeruesa durtemp het atendant in gill nets dus trug tancombers la seines ave r a velis beach Seine butional trends hv.mter 1975; during AWuet and early Septeeder. Gill not catches August 19M and prester than same period an 1975 and 19M.
June 1977 Alosa Gtt! Net No consistent distri-he t numerous during Gill not catches consistent with earlier years. Seite pseudoharangus teach seine beational trends Ex toter 19753 June catches asighest in August /early Septead,ers abunda.eces 19 7t>.
4:eates than same period in earlier years-Cluf*e Gill Net Well dtstributed H&qhest neanters spatial and seasonal distribution consistent with earlier herengus amasus all transects cellected Octoter years. Catch abundance ars-roximately 2-3 times greater through June than earlier years.
6aJus Otter Trawi Must nuseeraus at Present throughout Spatial and seasonal distribution consistent with earlier mar hua G111 Net otter trawl Transects the year.
years. Catch abundance an 9111 note similar to earlier L and 3.
h consis-yearss otter trawl catches declined.
tent distributional treew$s ass >ng gilt not t ransect s.
Limmada otter Trawl Most numerous at shmeerous throsyghout General agreement with eastier years, ferrug anea Tusasect 1 the year.
Nensdaa beach Seines Abundant at all nost numerous f rom spatial and seasonal distribution consistent with earlier menidia seine stationne high-August through years. Catch abundance in the range of values recorded est concentrations at Nuvember Juring lat.or half of 1975 and 197ee.
Station St.
y O
hrliseca us Gall Nets het numerous at Maalmias atendances Spetlal and seasonal distribution consistent with earlier bilinee r d s Trawls Otter trawl Traneects d'. ring late spring /
yearsa cat.ch abundance in gilt nets approsamately twice 1 and 3, and C111 not early susseer and as abundant in July through Decent.or 1977 Transact C again during f all.
Osmerus beach Seanes het misserous in het nemmerous inshore spatial and seasonal distritutaan consistent with earlier surJas utter Tsawle beach seines at (seines) during July-years. Seine catch-atendance greater than previous years.
Station 31.
No con-September and of f shore sistent spatial (ts auls) during Jan-distribution trends uary-April.
An otter trawl catches.
Pollachies Gill Nets No consistent spa-bat nasmerous during Peak catch collected during Novesd,er. Catch abunJance edrens tial distributkon spring and summer.
greater than previous years.
trends.
Pseudopleuronectes Otter Trawn nost numerous at het numerous during
.ipatial distritation consistent with previous years.
americanus teach Seine atter trawl Transect spring and early fall. hhuserous through suseer and fall -- t,cth methods. Seine 2 and teach seine catch-atendance greater than same gerlod in previous fears.
Seceber Gill Net No consistent spa
- Generally present heelt distritsuted amming all transects. Catch etendence and scos hrus tial distritnation June - Deceeder.
Seasonal trends consistent with 19M.
Laeshie Meet abundant a June / July and Octoter/
Noventer 1975 August /Septemter 19 4 IFrephycis sp.
Otter trawn het pusnerous at Generally present Spettel distribution cuns& stent wet.h earlier years. het Transects 1 and 3.
April-December. he t,abiandant during July and AWust. Catch etesatance in the i
abundants June / July range of values recorded during same seriod of 1975 and I
and Septester-19 M.
November 1975 August /Septemter 19M.
21 Ichthyoplankton assemblages sampled during the July-December 1977 sample period were similar.to those recorded during the 1975 and 1976 programs (NAI,-1977 and 1978). Similar taxa (eggs and larvae) were identified and, as in earlier years, no consistent distributional trends among sampling stations were evident for either life stage.
Seasonal abundance patterns of dominant fish eggs and larvae were con-sistent with those observed during previous years (NAI, 1977 and 1978).
High fish egg abundances during summer were due to eggs of Labrid/Limanda, Urophycis sp. and M. bilinearls, while eggs of Gadus /Melanogransnus and P. virens were the major component of the late fall /early winter assemblage.
High summer fish larval densities resulted from high concentrations of T. adspersus and E. cimbrius, and November peaks were dtie to C. harengus.
?. virens and A. americanus succeeded as dominants during December.
Densities of fish eggs collected during the July through December 1977 sampling period were generally higher than densities recorded during the same period in 1975 and 1976. This increase was particularly evident for M. bilinearls, Urophycis sp. and Labrid/Limanda (NAI, 1977 and 1978). Increases in the density of fish larvae were not as noticeat'e as for eggs, and densities of most species were in the range of previous years.
22 5.0
SUMMARY
Finfish assemblages sampled since July 1975 in the Hampton-Seabrook estuary and offshore region have been reasonably consistent and predictable. Species composition, and seasonal and spatial abundance trends record 2d during the July-December 1977 sample period were generally consistent with trends observed during the first two years of formal preoperational monitoring. Actual numbers of individuals collected during the later half of 1977, how'ever, were greater than recorded during the same period of 1975 and 1976. This was particularly evident for finfish collected in gill nets and beach seines, where, on the average, 2-4 times more individuals were collected.
In addition to Tgher abundances of juvenile and adult finfish, densities of fish eggs were also abora the range of earlier years; though larval densities did not deviate considerably from previous levels.
The migratory and meandering nature of various fish species coupled with the temporal spacing of sample collections is expected to -
resulc in year to year variations in recorded abundance and distribution.
Natural variations in r3cruitment to the adult population due to fluctuations in year-class success and movements of fish into and out of the area may also result in annual variability in catch data.
Overall, variations observed in the data were not considered substantial and do not repre-sent large deviations from previously established trends.
-,a
-e 2
a - -
+
m 2..m$
,,w,,
<d
. j s
I s
APPENDICES 4
i s
d 1
1 a
I i
~
k b
I h
I 1
i
24 APPENDIX TABLE 1.
LIST OF FISH SPECIES ENC 0UNTERED IN THE MARINE AND ESTUARINE WATERS IN THE VICINITY OF THE HAMPTON-SEABROOK ESTUARY. SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
LIFE STAGE JUVEMILE SCIENTIFIC MAME COMON NAME AMD/OR ADULT URVAE EGGS Alosa aestlyelfs Bluehack herring n
Alosa peessoherengus AlewLfe n
Alosa sapidisstas American shed g
Ammodytes americanus Amerissa send Lance a
a a
Aspidopnotoides monopterygius A111gatortish a
a stevoortia tyrannus Atlantic menhaden a
a stosme broame Cusk n
Clupea harangus Atlantic herring a
a Cyclopterus Japus Linnpfish a
a Fundulus heterocJitus leJrunichog a
rundulus majalis striped killifish a
Gadus /Nelanograsurus Cod and/or maddock a
Gadus mothua Cod a
a Gasterosteus aculeatus Threespine stickleback a
C2yptocephalus cymeglossus witch flounder a
a a
- esitripterus amer 4canus Sea raven a
sippoglossoides platessiodes AmerLcan plaice n
n Latridae/f f maM*
Cunner and/or Flounder a
unsada terruglaea Yellowtail flounder a
a r
l Mopoetta putnami Smooth flounder a
Liparis sp.
Striped and/or casumon seasnail a
a Liparis atlants:us sessanil x
Liparts 24 parts Striped seasnail a
Zophius americanus Goosefish 3
a macroscarces americanus Ocean pout a
s Malanogrammus aeglefinus Raddock n
a Nemidia manid/s Atlantic stiversides a
Nersuccins bilisearls Silvet hake x
s a
Microgadus toscod Tomcod n
Wustelus canir Smoth dogfish x
Nyorocephalus sp.
Sculpia m
Nyomocephalus aenaeus Grubby sculpin s
Nyorocephalus octodocessplaosus longhorn sculpia a
Nyorocephalus scerpius Shorthora sculpin a
osserus mordar Rainbow smelt a
Paralichthys o&Iongus Fourspot flounder a
Peptilus triacanthus Butterfish a
a Pholls gunnelas Pock gunnel a
Pollacalus ritens Pollock a
a a
Pomatosus saltatris Bluefish a
7tionotus careJimus Common searobin a
a pseudopleuronectes americanus winter flounder a
a Pungitius pungitius Minespine stickleback a
Raja sp.
Skate z
Rafa binoculata Big skate a
Aafa eglanterza Stier skate a
Rafa eriaacea Little skate a
Raja radiata Thorny skate a
facholyopus ciskrjus Fou4 beard rockling I
a a
faimo gairdneri Rainbow trout a
Jalso trutta Brown trout a
- comber scambrus Atlantie mackerel a
a a
scophthalmus aguorus Windowpane a
a a
femestes mariava Rosefish a
Jgualue acaathias Splay dogfish a
scenocomus carysope scup a
syngnathus fuscus porthern pipefish a
a fautoga onitis Tautog a
Tautsgolabrus adspersus cunner a
a Clearia subbifurcata Radiated snanny a
a trophysis ap.
Make x
s trophycis chuse Bed hake a
trophysis regius spotted hake n
1
APPENDIX TABLE 2.
FISil SPECIES COLLECTED SY OTTER TRAWL AT TRANSECT 1 OTF HAMPTON-SEABROOK, NEW llAt1PSilIRE (TOTAL OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY TilROUGil DECEMBER 1977.
COLLECTION DATE SPECIES 7/14 8/18 9/28 10/18 11/16 12/29 TOTAL.
Cadus morhua 2
2 1
1 7
13 Glyptocephalus cynoglossus 1
1 Hemitripterus americanus 2
1 6
1 10 Lirrunda ferruginea 150 104 38 133 65 139 629 Liguris sp.
I 1
Lophius americanus 2
2 Macrozoarces americanus 12 3
1 7
4 1
28 Melanogrammus aeglefinus 15 21 5
1 42 Merluccius bilinearls 48 7
16 13 10 1
95 Microgadus tomcod 1
1 2
Myoxocephalus aenaeus 1
1 Myoxocephalus octodecemspinosus 48 40 8
59
'23 4
182 Paralichthys oblongus 9
3 3
15 y
Osmerus mordax 7
7 Pholis gunnellus 1
1 Pollachius virens 1
27 28 Prionotus carolinus 1
1 Pseudopicuronectes americanus 35 14 6
17 10 8
90 Raja er.inacea 5
1 4
14 6
30 Enchelyopas ciabrius 1
1 Scomber scombrim 1
1 Scophthalmus aquosus 4
2 18 14 16 9
63 Stenotomus chrysops 1
4 5
Syngnathus fuscus 8
1 1
10 Tautogolabrus adspersas 1
1 Urophycis sp.
309 282 56 108 46 7
808 Urophycis chuss 3
3 Urophycis regius 2
2
APPENDIX TABLE 3.
FISH SPECIES COLLECTED BY OTTER TRAWL AT TRANSECT 2 0FF HAMPION-SEABROOK, NEW hat 1PSHIRE (TOTA'. OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMU a 1977.
C0LLECTION DATE SPECIES 7/14 8/18 9/28 10/18 11/16 12/29 TOTAL Alosa pseudoharengus 9
9 Clupea harengus H 1
1
.Cyclopterus lumpus 1
1 Gadus mothua 2
1 1
10 14 Hemitripterus americanus 3
1 4
4 1
13 Limanda ferruginea 21 5
10 6
4 46 Liparis atlancicus 1
1 Liparis liparis 1
1 Liparis sp.
1 1
Macrozoarces americanus 2
2 2
2 8
Merluccius bilinearls 1
4 4
2 11 Myoxocephalus octodecemspinosus 3
16 1
1 7
1 29 y
Osmerus mordax 29 29 Paralichthys oblongus 1
Pholis gunnellus 2
1 1
'l 1
4 Pollachius virens 5
3 9
9 1
27 Pseudopleuronectes americanus 31 54 30 21 31 1
168 Raja erinacea 2
1 4
1 5
13 Raja radiata 2
2 Raja sp.
1 1
Scophthalmus aquosus 1
2 2
5 Sygnathus fuscus 4
11 1
16 Tautogolabrus adspersus 2
2 U1varia subbifurcata 1
1 Urophycis sp.
20 29 35 31 7
1 123
APPENDIX TABLE 4.
FISH SPECIES COLLECTED BY OTTER TRAWL AT TRANSECT 3 0FF liAMPTON-SEABROOK, NEW HAMPSHIRE (TOTAL OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY TilROUGH DECEMBER 1977.
C0LLECTI0N DATE SPECIES 7/14 8/18 9/28 10/18 11/16 12/29 TOTAL Alosa pseudoharengus 1
1 Aspidophoroides monopteryginus 7
7 Clupea harengus 1
1 Cyclopterus lumpus 1
1 Gadus morhua 4
1 6
20 31 Glyptocephalus cynoglossus 1
1 Hemitripterus au;aricanus 1
1 4
6 Limanda ferruginea 47 42 42 72 44 79 326 Macrozoarces americanus 13 12 6
8 4
7 50 Melanogrammus aeglefinus 37 26 8
22 4
97 Merluccius bilinearls 11 10 31 20 3
2 77 Microgadus tomcod 1
1 2
u*
Myoxocephalus octodocemspinosus 24 22 31 31 23 42 173 Myoxoceplulus scorpius 1
3 4
Osmerus mordax 45 45 Paralichthys oblongus 1
1 1
2 5
Pholis g:1nnellus 1
1 Pollachius virens 1
2 3
Pseudopicuronecte. americanus 10 7
12 17 8
6 60 Raja binoculata 2
3 E
Raja eglanteria 2
2 Raja orinacea 8
13 37 29 14 4
105 Raja radiata 5
4 4
15 28 Raja sp.
1 4
5 Scophthalmus aquosus 1
1 8
3 3
3 19 Squalus acanthias 1
1 Stenotomus chrysops 1
1 Syngnathus fuscus 1
2 4
7 Urophycis chuss 5
5 Urophycis sp.
215 216 124 134 31 5
725
o O
APPENDIX TABLE 5.
FISil SPECIES COLLECTED BY GILL NETS AT TRANSECT A 0FF llAMPTON-SEABROOK, NEW liAl1PSilIRE (TOTAL OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY TilROUGil DECEMBER 1977.
COLLECTION DATE I
SPECIES 7/13 8/10 9/14 10/12 11/16 12/30 TOTAL Alosa aestivalus g
Alosa pseudoharengus g
Bravoortia tyrannus y
S 4
310 55 43 412 Clupea harengus B
1 44 1
3 49 S
2 2
Clupeid B
1 1
2 S
1 1
2 Gadus mothua y
4 3
3 y
Merlucc.lus bilinearls 49 S
1 1
Myoxocephalue octodoce.nspinosus y
Osmerus mordax g
3 y
Pollachius virens y
7 2
3 4
g S
12 55 6
58 1
132 Scomber scombrus B
1 4
5 1
11 S
1 1
Scophthalmus aquosus g
Squalus acanthias y
4 4
S Urophycis sp.
B 6
30 2
38
APPENDIX TABLE 6.
FISH SPECIES COLLECTED BY GILL NETS AT TRANSECT B 0FF HAMPTON-SEABROOK, NEW HAMPSHIRE (TOTAL OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUblES, JULY THROUGil DECEMBER 1977.
i COLLECTION DATE SPECIES 7/13 8/10 9/14 10/12 11/16 12/30 TOTAL A
0 0
Alosa aestivalis g
S 1
6 3
14 Alosa pseudoharengus g
S 1
1 1
Brevoortia tyrannus S
1 1
338 39 17 396 Clupea harengus B
3 47 13 23 86 VJ Clupeid B
Gadus mothua g
Hemitripterus americanus g
Lophius americanus g
I A
Merlucclus bilinearls g
5 I
I Mustelus canis g
S Myoxocephalus octodecemspinosus g
Osmerus mordax Continued
.)
APPENDIX TABLE 6.
(Continued)
COLLECTION DATE SPECIES 7/13 8/10 9/14 10/12 11/16 12/30 TOTAL Pollachius viren 1
2 6
7 18 18 52 S
1 1
Pomatomus saltatrix g
Prionotus carolinus g
Scomber scombrus g
Squalus acanthias y
3 Urophycis sp.
B 11 9
5 3
5.
APPENDIX TABLE 7 FISil SPECIES COLLECTED BY GILL NETS AT TRANSECT C 0FF HAftPTON-SEABROOK, NEW HAMPSHIRE (TOTAL OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY TliROUGH DECEMBER 1977.
COLLECTION DATE SPECIES 7/13 8/10 9/14 10/12 11/16 12/30 TOTAL I
A IU U
SI Alosa aestivalis g
S 4
2 2
1 9
Alosa pseudoharengus a5 Bravoortia tyrannus S
1 26 175 72 40 314 Clupea harengus B
1 29 35 4
13 82 8
ll ll Clupeid U
B S
1 2
3 Gadus morhua B
1 1
11 2
15 Merlucclus bilinearis B
1S 8
1 S
1 1
Mustelus canis S
Myoxocephalus octodcccmspinosus Myoxocephalus sy.
g I
Osmcrus mordax Poprilus triacanthus g
Continued
APPENDIX TABLE 7.
(Continued)
'S C0LLECTI0N DATE SPECIES 7/13 8/10 9/14 10/12 11/16 12/30 TOTAL S
1 1
2 4
Pollachius virens B
2 1
12 1
23 3
42 S
20 34 9
33 96 Scomber scombrus g
g g
3 y
24 S
Squalus acanthias g
5 3
s Tautagolabrus adspersus g
4 35 39 Urophycis sp.
B 11 3
7 21 U
APPENDIX TABLE 8.
FISH SPECIES COLLECTED BY BEACH SEINING AT' STATION S-1 (TOTAL OF TWO REPLICATES PER COLLECTION DATE) IN llArtPT0H-SEABROOK ESTUARY. SEABROOK ECOLOGICAL STUDIES, JULY TilROUGH DECEMBER 1977.
C0LLECT.I0N DATE SPECIES 7/07 7/21 8/02 8/22 9/01 9/19 9/30 10/21 11/02 11/21 TOTAL Alosa aestivalis 3
21 2
1 27' Alosa pseudoharengus 1
42 79 122 Fundulus heteroclitus 6
316 322 Fundulus majalis 118 89 201 Fundulus sp.
6 1
998 33 1038 Gasterosteus aculeatus 6
6 Llopsetta putnami 3
5 1
1 2
2 14 W
Menidia menidia 10 5
18 328 30 249 236 146 465 1487 Microgadus tomcod Peptilus triacanthus 1
1 Psesadopleuronectes americanus 15 5
5 14 4
4 19 13 5
84 Pa*.sgitius pungitius 387 11 1
14 3
2 418 Salmo gairdneri 1
1 Scophthalmus aquosus 1
1 Syngnathus fuscus 1
1 Tautogolabrus adspersus Urophycis sp.
1 1
i
APPENDIX TABLE 9.
FISil SPECIES COLLECTED BY BEACil SEINING AT STATION S-2 (TOTAL 0F TWO REPLICATES PER COLLECTION DATE) IN llAMPTON-SEABROOK ESTUARY. SEABROOK ECOLOGICAL STUDIES, JULY TilROUGil DECEMBER 1977.
C0LLECTI0N DATE SPECIES 7/07 7/21 8/02 8/22 9/01 9/19 9/30 10/21 11/02 11/21 TOTAL Alosa aestivalis 11 1
8 20 Alosa pseudoharengus 60 1
1 G2 Ammodytes americanus 3
1 148 67 219 Fundulus majalis 95 1
22 118 Fundulus sp.
2627 22 33 4
2686 Gasterosteus aculcatus 2
2 Liopsetta putnami 1
1 3
1 1
7 Menidia menidia 17 4
7 506 1286 188 453 113 3
12 2589 Osmerus mordax 1
1 Pseudopleuronectes americanus 3
1 4
8 3
13 3
35 Pungitius pungitius 12 161 1
174 Salmo gairdneri 1
1 Scophthalmus aquosus 1
1 Urophycis sp.
13 1
14
APPENDIX TABLE 10.
FISil SPECIES COLLECTED BY BEACil SEINING AT STATION S-3 (TOTAL OF TWO REPLICATES PER COLLECTION DATE) IN llAMPTON-SEABROOK ESTUARY. SEABROOK ECOLOGICAL STUDIES, JULY TilRCJGli DECEMBER 1977.
C0LLECTI0N DATE SPECIES 7/07 7/21 8/02 8/22 9/01 9/19 9/30 10/2)#11/02 11/21 TOTAL Alosa aestival.is 23 11 4
2 40 Alosa pseudoharengus 65 1
66 Alosa sapidissima 1
1 Clupea harengus 16 16 Fundulus anjalis 1
1 2
Fundulus sp.
1 1
Gasterosteus aculeatus 1
6 6
13 Llopsetta putnami 1
4 3
1 9
Menidia menidia 1
2 188 604 197 1068 47 888 3369 6364 w
Microgadus tomcod 2
2 V'
Myoxocephalus aenaeus 3
1 1
5 Nyoxocephalus octodecemspinosus 1
1 Myoxocephalus scorpius 2
2 Osmerus mordax 17 794 11 21 54 897 Pseudopleuronectes americanus 2
28 1
5 57 5
20 5
31 1
155 Pungitius pungitius 1
113 24 138 Salmo gairdneri 1
1 Salmo trutta 11 11 Syngnathus fuscus 3
3 Tautogolabrus adspersus 3
3 Urophycis sp.
3 4
1 1
1 10
O 36 M3O ZO a
>M MW Z-
<O JQ LWM M@j g
000000-0g000000 g OcaOOOO;OOOO;O;OOOOOOOOOOO ;
Mu
~
C
>.e N
<a wo 00000C*OgCOOCOO g CCeCOOO*OOOO-0-OCOOOOOOOOO $
m CW
-l ZU W
~
CM 20 s cc Cr(0000nO00000 MOO 000000000 y g
000000g00000000 g s
z<
-s
-w M
y 0Oe--00000OOO -
Om*OO-OOOO=.0000000 OOOOOOO $
e
=
s
=
%^
- C q
<M o
Jw
~ c
--e0~,000,00000 4
=2 geog-OmO-a gGOO=OOOO*COOOO 3 E:
O o 4
o<
" O O
~
S ZQ a
4m
& e ens J
r
@1
( m e s
~-
~
43OM= *.-OmOO-00000000 m-000 P.Pe.
- OOe,OOOO w
~
O 0%
C 2
i w
s
~
~
=0 MO 2
g;g;g sse=*y=oc -A E30"*;********c"**-****
3
~w s
-eeen-
~~
e w
k ili o
w rs s
w O Ch O
W t
- $. 3 3 5 8 3 $ 8 ' i R * *
- R f**!:"
- $Ef".**************
?
mCE s
..-~
O M
<w e
.g; g
E c:: c 2
e -
WE O>w O<U R
- #. " ; 3 3 2 ? " * ". * **j 8,2*'.%
- 3'3""
""**"******* }
Ovw s
--~,
8 l,ii
,Q g
a
=
v l-- C UD MwO
=
=
tJM%
i H" < H
=
=
3 5
E ZZ 3
3 2
.,:* 3 E
s 3
~%
o 3
.3 S
M H >=
l
'T
~,7 I.
..inli.y,-...
8j z
J
==
g<
t=
6
=
-gu g.
u a.*
n;,:g i s
- 7.. } : 3
- . y
- is.:g:2 na::::g3.2 m
,0 a
=-
I 1, e,3; ac j:at 31:44::e-
.c.
r:.::*2
-4 4
.-,4
-~ sag 4g.l.]!
4
=
- s
- :a. g ; t t a >. -,2 4, -
23g4,t a p a a 4 = j g ~ : l %
Ja;ggaste n=s aa
-s 52ns3ra.:::::s..s. f.j a 2 r. t.:,
E
.a 84*
- 3 r
3*3 -
1 4 t}'5.s,.E gelt 4I1* l4 k-[:P3,8 F--*
~
4 C E : G z[:2 : 2 2 $ k ;[4 3 g
j e
-2
- g
[3:$ iris:1 ?!4b 5
5 1 23 3kt:brl23d'eas 4 T-1121tR 1:
w a 3 E 4 - 3.-1'; 2 t s :2t
.2
.1 ae<
b Zw C
L<
3 APPENDIX TABLE 12. DENSITIES (#/1000 m ) 0F FISH EGGS AND LARVAE IN HAMPTON-SEABROOK PLANKTON TOWS AT TRANSECT 2 (AVERAGE OF FOUR REPLICATES). SEABROOK ECOLOGICAL STUDIES, JULY THROUGH DECEMBER 1977.
5 AMPLE DATE 7/(4/77 7/20/77 8/03/77 8/23/77 9/07/77 10/04/77 11/01/77 12/15/77 12/27/77 1AxA EGG 5 Iransect I-2 firophycis sp.
35,468 8,427 4,321 5,273 11,626 3
1 0
0 tatar ad/LJasada 75,903 9.114 1,8 10 3%
40e 2
0 0
0 i
nerlucwfus bilinenss as 11,639 16,483 9,40m 8,4 4,907 219 4
_O O
&xmaer asymbres 1,261 779 241 35 0
0 0
0 0
rauchelyssess cambr ius 246 711 150 15 5h4 6
4 0
0 Ex>get halmus agunsus 3W 290 3J2 105 152 0
1 0
0
(.mdus/MeJasuntaamous 9
1,902 15 37 0
0 94 17 33 Clys,ture;Aelus cyrmastossus 4d3 176 91 88 27 0
0 0
0 lbljachius virens 0
0 0
0 0
0 0
13 334 5+geiJus trJacanthus 0
0 0
0 len 0
0 0
0 NaspastossoJJes plattessoides 19 0
0 15 0
0 0
0 0
< pas (un4Jent6f 6ed) 0 0
0 4
0 0
0 0
0 arevour t ia t yrannus 0
0 0
0 0
0 0
0 0
PrJoesutus carojinus 0
0 0
0 0
0 0
0 0
Amas= fuses ameracanus 0
0 0
0 0
0 0
0 0
Tf4A14 125,331 37,841 16,357 6,551 17,82B 230 10H 31 367 l
LARVAE Iransect I-2 Tautogojabros aJspersus 333 1,250 104 179 367 0
0 0
0 Fswhelvolus cialrius 64 548 70 150 107 0
8 0
0 Clugawa herengus 0
0 0
1 0
1 817 3
2 brJucrius bi1Jnoeris el 4 76 3
24 181 1
0 0
0 LJ aanJa f errug a tw 40 0
21 40 11 0
0 0
0 61gptocephalus cytmylossus 88 144 9
26 20 0
0 0
0 prophycis op.
0 0
0 3
132 0
2 0
0 PvJJachaus virens 0
0 0
0 0
0 6
180 35 t!Jearja autobifurcata 93 37 le 0
2 0
0 0
0 14rvae (wildenti f t ed) 17 163 4
0 8
0 0
1 0
&xmber scusibrus 65 150 0
0 1
0 0
0 0
Swphthalmus aguosus 40 11 4
24 12 2
0 0
0 Amunodytes americanus O
O 1
0 0
0 2
8 84 NJpsoglossandes p atessondes 10 0
7 0
0 0
0 0
0 j
GmJus mushua 5
4 1
3 0
0 3
0 ll aromme brosme 1
0 0
0 0
0 0
0 0
mejaruvrasumus aeJ efinus 3
0 0
0 0
0 0
0 J
SyrNnethus fuscus 0
0 0
0 3
0 v
0 0
O O
O O
O O
O O
l CycJopterus Jumpus pseudop euronectos aevricanus 0
0 0
0 0
U 0
0 0
j Tautoga onit is 0
0 0
0 4
0 0
0 0
IophJus americanus 0
4 0
1 0
0 0
0 0
Sebastes marinus O
O 3
0 0
s 0
0 LJparis sp.
2 0
0 0
0 0
0 0
0 Macrozoerces americanus 0
0 0
0 0
0 0
0 0
Aspidophosoides sunupteryg d us O
O O
O O
O O
O O
TOTAIS e47 2,78b 244 453 854 3
838 192 129
i 3
APPENDIX TABLE 13.
DENSITIES (e/1000 m ) 0F FISH EGGS AND LARVAE IN HAMPTON-SEABROOK PLANKT TRANSECT 3 (AVERAGE OF FOUR REPLICATES).
SEABROOK ECOLOGICAL STUDIES' J THROUGH DECEMBER 1977.
54MP l (
OA I[
j l
'tr '
$W t< ' 0 ) 17 i d, J. Il 9, t)l s11
\\ q, q t 7 7 l},,,l,77
- ,,3 y,
3,,,
IAAA t b6' I r dinet t ].J i'!~
> n g
_4, ra: L. as s ed.s 4
T-
-'-A' J-b:
5
. 4 4
e < tu-t r t.nmL:u
^<
a 4*;w
. int. t 8
4,
- g e t % 1su -
jm3
,44 aL.
We..s m ia awnu r et -,
as u
a s v i a I
a f J
,t ri t f m 3 HN v
.Je
't.-
,.s, r
4.sa
- r I
a vi 2
o
-O 01 44 4 es s a,,
r 2A'
- 4e i
a 3
,4,.
3 1 A ir y Af o r se-i E
I Jnmj-2 y
.4 f
P L
i J
f a
4 y? nan.'
t
. ul i J
J d I f u
AlI a.,.g...3 2
3 g
nre 1 i
s
@ f
.a f
the
/f sete 4
i nannst.
/u re.42OJ +d L.h!
I I
,m aw r 2
-ws J I
ESFIt a h
A J,
II 4
l l
A. -
,e N,.
}_
=*. - * ' '
%_ l4..
i _
'C'
_ _'j y
2,
.y
~
e. - _ r
- . : 1.s.
'....* }.
b,
,. 4 ;-*
g [j,.
(,,,,
f g
..,,. +
" ~
'm-
.' ) ~~' -
- a.
+
.m.-
\\"
s
- a x
, e.
x v.
...... u. ? '. -
- .f
. s g.s.g'y:,. - ~. -
.t
. c 7
>e
-.,.2 s -
.".w
. ?
,,e
~ +,
.'i' 3-V.
y
,g, ' ',,.-
s ' g.
+).
-]
4."..,.
t
+-
s
- ~,-
sm.
- a
-6 4
,m.,
,.= ~
9 ir 5
,..- i 1r -
s.
3
[
.g p
g,'1 2
+,
.n g
+
+
~
- ,q-.
... +
..I
-. ;t -.
4
- 5
,.. g_
.c
.-.. :, s -
g q,
-- g ;
t
+*..
2 y,
p
6 38 ag, E
i J
m 3OW
>=
2J OD H7 M
Z
- EC M JW
~
oooocomoeococco a oomacoomonooeovooooooooo-o,
c,, -
~
~ +
e m
e Q
m' MD t
or Om ocoooooOmocooom #
oONooCodo-oovo-oooooococoo e Co J t
d
-e Wu s
m-2 Z
~
oomoooooooooooo o omgcooo-ooooooocococoooooo e
oJ t
Ho 5
a CL U s
EW
=
5_ M g
,~go~~-ooooeoso ;
-o-oooo~ooo-oooooooooooooo.
o
=O 3
w s
- C:
s
- 2 Ca W <C o
<C W t
F$ og%:
- cooi.oo s
>m m s
~,,.
~-
o n
~
-/
2;o*:'Ro***:
o""
o*o*o M
B*
3*
-A E
2 2
a J
=
o x
n y
om
- ~
- ggstg**coooooo 5
- o;*;;o-ootomooo'oooooooo 0 8
=W e s e
o m
o eo
~
c:: H t
J J J
4 mu
-g
</
c-
/s c -.J t
97 8833- *5 j
F; W o.
2
~ ~. o. ~ ~ ~ o n
- :"R R
2 4
n W
o
-sm e
sx-2%
k
- p k%,
e g
L. D t
%'."*{*
l j
9*a 3*NO**$**
g u-g sie i
u_
m
-or O
n. - ~ ~,$ 0 f 8 Cooo*
- o$ $.o*EC$$o20*O********
t S$$
EWm s
U" 8
J a e' e'
~
O a:t' s
~n o
e O Cf E CWW
- > C3 N<E I
I 3
- W 2
,4 s
Q 3
e
=
MW 3
2 l
'l
$3 m
o 2
2.
.2-7-...t ai WH 3
),c t~:.aa'
- I *<
- 2
- =y 2 ss 9
p aa
'!. i t 3: ( 4, a *alcatatt,i:a a; e
t2
-u=
5 rWe 4-a sa T ",.1 1,g
,5
.1,:37:.t'
- 1,1 ; t.,.
~ m. D 5
0 221:
s e 4 ] o
=,m,3, : 2 2.
m o
-c=,I 3
..--.4
.oE4 234o
, 35
~.
.a.,~
~
chg
'I.egi,gJ.
24.
4
-m m
2?2r.2*.1]l34;a 2 j t!.gg;ti eo N
3*.3 3
a $ e' t.. :. p t
i-0-p 0 2
- g3 mn ::
e:-
4 s 2,3. R. 5. t. ~i ~ * :' ~ 1.
.I 3 !N E2";o4 3
- l. l 14d-3s3.8st,2 2',
g W
M
,I 3
&4s:a:" -
5 13s 7. :.,I,t & : 1 t b a. '3.- 1. E rl 2' 4 2,e &
4
=taE~
~
W 5 n; 3=.
.it43,u2=u
e~=I 3 *u we
= v = a u s a. o 3 4 4 u
- o
=wv.
m
- o
= = <
J CQ f
/
\\
W s
4
/
>a:
's j
Q F
Z s.'
f W
C.
f C
t 4
/
i i
_,q _
.,- g k L
APPENDIX TABLE 14.
RANKED DOMINANCE AND BIOLOGICAL INDEX VALUE OF FISil EGGS AND LARVAE BY DATE IN Tile IIAMPTON-SEABROOK AREA. SEABROOK ECOLOGICAL STUDIES, JULY TilROUGil DECEMBER 1977.
EG6S TAXA 7/6 7/20 8/3 8/23 9/7 10/4 11/1 12/15 12/27 POINTS
- Nerluccius bilinearis 8
9 10 9
9 10 9
7 0
71 Urophycis sp.
9 10 9
10 10 9
7 0
0 64 Gadus /melanograassus 2
7 4
5 3
5 10 9
9 54 Labrid/Limernfa 10 8
8 7
7 7
0 0
0 47 Enchelyopus cimbrius e
5 6
4 8
8 8
0 0
43 Scophthalmus aquosus 6
4 5
8 5
6 6
0 0
40 Scomber scombrus 7
6 7
3 0
0 0
0 0
23 s
C1yptocepM1us cynoglossus 5
3 3
6 4
0 0
0 0
21 Pollachius virens 0
0 0
0 0
0 0
10 10 20 Hippoglossoides platessoides 3
2 2
2 0
0 0
0 0
9 3aunodytes americanus 0
0 0
0 0
0 0
8 0
8 Peprilus triacanthus 1
0 0
0 6
0 0
0 0
7 Unidentified 0
0 1
1 0
0 0
0 0
2 Brevoortia tyrannus 0
0 0
0 2
0 0
0 0
2 Prionotus carolinus 0
1 0
0 0
0 0
0 0
1 LARVAE we TAXA 7/6 7/20 8/3 8/23 9/7 10/4 11/1 12/15 12/27 POINIS*
Enchelgopus cimbrius 9
9 9
9 7
8 9
0 0
60 74utogolabrus adspersus 10 10 10 10 9
4 0
0 0
53 Nerluccius bilinearls 6
8 7
7 10 6
0 0
0 44 Clupea M rengus 0
0 0
0 0
10 10 8
7 35 GlyptocepMius cynoglossus 8
6 5
6 6
3 0
0 0
34 Pollachius virens 0
0 0
0 0
7 8
10 9
34 ScophtM1mus aquosus 3
3 3
5 5
9 0
0 0
28 Linsenda ferruginea 5
1 8
8 4
0 0
C 0
26 Ammodytes americanus 0
0 0
0 0
0 6
9 10 25 Unidentified 1
7 2
0 2
0 0
6 6
24 Gadus mothua 0
2 0
0 0
0 7
7 8
24 Urophycis sp.
0 0
1 4
8 5
5 0
0 23 Ulvaria subbifurcata 7
4 6
3 0
0 0
0 0
20 Scomber scombrus 4
5 0
0 3
0 0
0 0
12 Hippoglossoides plattessoides 2
0 4
2 0
0 0
0 0
0 Macrozoarces americanus 0
0 0
0
~0 0
0 0
5 5
Aspidophoroides monopterygius 0
0 0
0 0
0 0
0 4
4 Syngnathus fuscus 0
0 0
1 0
0 0
0 0
1 Tautoga onitis 0
0 0
0 1
0 0
0 0
1 l
" Biological Index Points-