ML20148L041

Ichthyoplankton Studies from Lake Erie Near Davis-Besse Nuclear Power Station During 1977

ML20148L041
Person / Time
Site:	Davis Besse
Issue date:	09/30/1978
From:	Reutter J OHIO STATE UNIV., COLUMBUS, OH
To:
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ML20148L004	List: ML20148L015 ML20148L029 ML20148L041 ML20148L045 ML20148L056
References
TAC-11339, TAC-11601, NUDOCS 7811200098
Download: ML20148L041 (9)

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. J CLEAR TECHNICAL REPORT NO. 88 1

ICHTHYOPLANKTON STUDIES 4 FROM LAKE ERIE NEAR THE l .

i DAVIS-BESSE NUCLEAR POWER STATION i DURING 1977 Environmental Technical Specifications Sec. 3.1. 2. a. 4 Ichthyoplankton Prepared by Jeffrey M. Reutter Prepared for Toledo Edison Company

- Toledo , Ohio THE OHIO STATE UNIVERSITY CENTER FOR LAKE ERIE AREA RESEARCH COLUMBUS, OHIO September 1978 1811200 6

3.1.2.a.4 Ichthyoplankton Procedures Duplicate ichthyoplankton (fish eggs and larvae) samples were collected from the surf ace and bottom of Stations 3 (control station), 8 (intake),13 (plume area), 29 (control station), and Toussaint Reef (Figures 1 and 2) using a.0.75 meter diameter heavy-duty oceanographic plankton net (No. 00, 0.75 mm mesh) equipped with a calibrtted General Oceanics flow meter. Each sample consisted of a 5-minute tow at 3 to 4-knots /hr with this net. Samples . were collected on 13 occasions (approximately 10-day intervals) between 20 April 1977 and 2 September 1977. Sampling was terminated after 2 September as only ,

one, sample on 22 August and none of the samples from 2 September contained ichthyoplankters. It should be noted that U.S. EPA (Grosse Ile office) termi-nates their Western Basin sampling on 15 July each year. Samples were pre-served in 5% formalin and returned to the laboratory for sorting and analysis.

All specimens were identified and enumerated using the works of Fish (1932),

Norden(1961aandb)andNelsonfndCole(1975). Results were reported as the number of individuals per 100 m of water calculated from the. volume filtered (flow meter) and the number of individuals within the sample.

Results Specimens collected during the 1977 field season represented 13 taxa, 12 to the species level and one listed as unidentified (Table 1). No eggs were collected in any of the samples. Gizzard shad, yellow perch, walleye and emerald shiners were the dominant species representing 55.9 percent, 25.5 percent, 11.1 percent, and 3.0 percent, respectively, of the total population.

No other species represented as much as 1.5% of the total. Gizzard shad occurred from 21 May through 12 August and peaked on 2 June at 198.3 indi-viduals per 100 m3 of water. Yellowperchwerepresentonghefirstsampling date, 20 April, but at the low concentration of p.1/100 m . Perch remained through 13 June and peaked on.21 May at 60.2/100 m . Wallegeoccurredfrom29 April through 2 June and peaked on 21 May at 49.9/100 m .

fmeraldshiners occurred frog 13 June through 22 August and peaked at 6.9/100 m on 27 July and at 6.2/100 m on 25 June. '

! Station 3 exhibited the greatest larval density, 57.4/100 m3, while, in the vicinity of the plant site, the other control station (29) exhibited the lowest density 15.8/100 (Table 2). Overall, Toussaint Reef exibited the lowest density, 11.6/100 m . At 4 of the 5 stations, larvae were more abundant ajthebottom(Table 3). However,thesurfacedensityatgtation 3 (80.8/100 i m ) was so much greater than the bottom density (19.2/100 m ) that the overall I mean from all stations showed the surface to have a greater density than the bottom.

All raw data were keypanched and stored at the offices of The Ohio State l University's Center for Lake Erie Area Research in Columbus, Ohio. A voucher collection of all samples is also maintained at these offices.

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DEPTH CONTOURS IN FEET BELOW LOW WATER OATU A

+ LE Asi cEPTH OVER Rf EF C CONTOUR INTERVAL 6 FEET k FEET

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e io. usa s's so sopoo MILES o vi s s .s < s s s ss '% ,P 83*'p5' 83 00' FIGURE 2. REEFS NEAR LOCUST POINT.

4 TABLE 1 MEAN-ICHTHYOPLANKTON CONCENTRATION *-

AT LOCUST POINT, LAKE ERIE - 19i7 1 '

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DATE April Apell May June June June July July July July Aug. Aug. Sept. MIAN 20 29 21 2- 13 25 5 13 20 27 12 22 2

$PECl[5 Carp 0.0 0.1 ' O.1 2.6 0.0 0.3 0. 5 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.28 Emerald Shiner 0.0 0.0 0.0 0.0 0.7 6.2 0.0 0.1 0.0 6.9 0.4 0.2 0.0 ' 1.12 freshwater Ocum 0.0 0.0 0.0. 3.3 0.1 1.0 0.3 1.7 0.2 0.0 0.0 0.0 0.0 0.51 Girrard Shad 0.0 0.0 1.1 198.3 38.0 15.8 1.1 13.4 ' O.7 0.0 0.4 0.0 0.0 20.68 Logoerch 0arter 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.3 0.0' O.0 0.04 Relabow Smelt 0.0 0.0 0.0 - 0.5 0.0 0,0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.04 Seeger 0.0 6.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.0 0.52 Spottall Shiner 0.0 0.0 2.1 0.2 0.0 0.1 0.6 0.0 0.0 0.1 0.0 0.0 0.0 0.24 untdentifed 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.02 Walleye 0.0 3.5 49.9 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.12 White Bass 0.0 0.0 0.0 0.2 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.02 White Sucker 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.01 Yellow Perch 0.1 43.4 60.2 19.1 0.0 0.0 0.0 0.0 0.0 0.0 - 0.0 0.0 0.0 8 9.45 TOTAL 0.1 53.9 113.4 224.6 39.0 23.5 2.5 15.2 0.9 1,0 , 1.1 0.2 0.0 37.0 l

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• ' LData presented as number of larvae per 100 m of water and computed

-from 2 surface and 2 bottom tows at each of 4 sampling stations .,

.(3,-8,13,29) at Locust Point.

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.i TABLE P i ICHTHYOPLANKTON. CONCENTRATIONS

• AT SAMPLING STATIONS t AT LOCUST POINT, LAKE ERIE - 1977 l

TATIONS 3 8 13 29 MEAN** Toussaint l Reef (

, , DATE _

• • 0.0 0.1 ***

April 20 0.3 0.0-l April 29 10.1 55.7 67.8 82.2 53.9 37.0 li a

May 21 230.4 4.9 169.7 48.4 113.4 14.1 'I 52.1 *** *** 224.2 ***

June 2 396.6 j June 13 52.8' 79.1 17.3 7.0 39.0 59.2 ]

19.9 30.1 23.5 ***

June 25 19.3 24.6 July 5 0.0 4.1 5.6 0.0 2.4 0.0 July 13 25.7 5.4 18.8 10.8 15.2 0.6 l July 20 0.7 0.7 0.9 1.0 0.8 0.7 July 27 '

8.6 9.4 2.9 7.2 7.0 4.3 August 12 0.8 0.0 1.0 2.3 1.0 0.0 August 22 0.6 0.0 0.0 0.0 0.1 0.0 Sep't ember 2 0.0 0.0 0.0 0.0 0.0 0.0 l t

MEAN 57.4 19.7 25.3 15.8 37.0 11.6 l

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• Mean number per 100 3m of water computed from 2 surface and 2 bottom tows at each station.  !

• • Does not include results from Toussaint Reef.

-*** Poor weathu conditions precluded sampling at this station.

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TABLE 3 a

I ",iTHY0 PLANKTON ' CONCENTRATIONS . AT THE SURFACE AND BOTTOM 0F SAMPLING STATIONS.AT. LOCUST POINT, LAKE ERIE - 1977 d

0 ATE DEPTH STATION STATION STATION STATION MEAN Toussaint 3 8 13 29 Reef:

20 April S' O.6 b 0.0 0.0 0.2 b B 0.0 b 0.0 -0.0 0.0 b 29 April S- 7.o 34.3 46.7 32.0 30.1 26.1 B- 12.2 78.9 88.6 134.7 78.6- 47.7 21 May- S 230.4 9.9 149.3 51.6 110.4~ 0.0 B' -c 0.0: 193.0 42.9 78.6 32.2 2 June S 731.9 57.6 b b 394.6 b. l B- 61.4 46.5' b b 54.0 b 13 June S 1.5 , 21.8. 19.3 7.3 12.5 72.3 B 112.6 132.2 15.8 6.5 66.8 47.1 25 June S 6.9 5.3 18.7 16.9 12.0 b B 31.4 46.8 21.0 43.2 35.6 b 5 July. S 0.0 8.5 4.4 0.0 3.2 0.0 B 0.0 0.0 6.9 0.0 1.7 0.0 13 July S 51.8 7.6 28.7 8.7 24.2 1.2 B 10.2 3.5 8.4 14.7 9.2 0.0 20 July S 0.0 1.6 0.0 0.0 0.4 0.8 8 1.5- 0.0 1.7 1.7 1.2 0.7 27 July S 16.6 .10.8 5.0 13.7 ,

11.5 8.1 B 0.8 8.4 0,7 0.0 2.5 0.0 12 August S 1.5 0.0 1.0 3.0 1.4 0.0  %

B 0.0 0.0 - 1.0 1.5 0.6 0.0 22 August S 1.7 0.0 0.0 0.0 0.4' O.0 B 0.0 0.0 0.0 0.0 0.0 0.0 2 Septer.ber S 0.0 0.0 0,0 0.0 0.0 0.0 B 0.0 0.0 0.0 0.0 0.0 0.0 MEAN S 80.8 .13.1 22.8 11.1 46,2 10.9 B 19.2 26.4 28.1 20.4 25.3 12.8 1 a Number'per 100 m3'of water.

Poor weather conditions precluded sampling these stations.

'[ Equipment malfunction.

S= Surface B= Bottom'

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_y, Analysis Ichthyoplankton populations have shown tremendous variations since 1974.

Emerald shiners constituted 81 percent of the 1974 larvae,1 percent of the 1975 larvae, 60 percent of the 1976 larvae, and 3 percent of the 1977 larvae.

Yellow perch constituted 5 percent of the 1974 larvae, 70 percent of the 1975 larvae, 4 percent of the 1976 larvae, and 26 percent of the 1977 larvae.

Gizzard shad appear to have increased significantly reaching 34 percent of the 1976 larvae and 56 percent of the 1977 larvae. It is felt that the above described variability is largely due to the fact that we are sampling schooling specimens. Consequently, when the net is drawn through a school the density appears quite high.

This is the first year that walleye have constituted a significant portion of the catch. However, adult populations throughout the Western Basin are increasing greatly and, consequently, greater larvae populations are to be expected (Scholl, 1978).

In 1976, control stations (3 and 29) were established on either side of the intake (8)/ discharge (13) complex to determine if unusually large fish larvae populations were occurring due to possible spawning in the rip-rap material around these structures. This does not appear to be occurring as larvae densities in 1977, as in 1976, at Stations 8 and 13 were normally within the range set by the control stations. Furthermore, due to the great varia-bility observed, density differences between stations were not significant at the 0.05 ievel. This indicates that populations occurring in the vicinity of the intake and discharge complex were not unusual .for the shore of Lake Erie near Locust Point.

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LITERATURE' CITED i

Fish., M.P. 1932. Contributions to the early life histories.of sixty-two species of fishes from Lake Erie and its tributary waters. Bull. U.S.

Bur. Fish. 47:293-398.

Nelson, D.D. and R. A. Cole. 1975. The distribution and abundance of

~ larval fishes along the western . shore of ' Lake Erie ' at Monroe, Michigan. Michigan State Univ., East Lansing, Michigan. Institute of Water Research Tech. Rept. No. 32.4. 66 pp.

Norden, C.R. 1961a. A' key to larval fishes from Lake Erie. University of Southwestern Louisiana, Lafayette. Mimeo. Rept. 4 pp.

. Norden, C.R. 1961b. The identification of lar val perch, 'Perca I

flavescens, and walleye, Stizostedion v_._ vitreum. Copeia 61:282-288.

i Scholl, R.L. 1978. Status of Ohio's Lake Erie Fisheries: January 1, 1978. Ohio Dept. of Nat. Res. Div..of Wildlife. 20 pp.

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