ML20079M930
| ML20079M930 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 05/22/1989 |
| From: | Breitburg D ACADEMY OF NATURAL SCIENCES |
| To: | |
| References | |
| RTR-NUREG-1437 89-12, AR, NUDOCS 9111110006 | |
| Download: ML20079M930 (34) | |
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A k
Trends in impingement of Finthh and illue Crabs at the Calvert Cliffs Nuclear I'mver I'lant 1982 1986 Denise L lireitburg Ileport No. 8912 3
A
[I4 h
llenedict Estuarine llesearch Laboratory tienedict, Maryland 20612 May 22,1989
1
\
ABSTRACT 1
Studios have been conducted at the Calvert Cliffs 11uclear
}
Power Plant to datormino species composition, numbers and weights N of fishes and selected macroinvertebrates impinged since 1975.
This report summarizes impingement of finfish and blue crabs during ,
.Y the five-year period 1982-1986. l Sampling was conducted in 6-day cycles et each of the plant'r, two units throughout the year. Each day's sample consisted of a h *
- iallection at each unit using a 1.27-cm stretch-mosh not Pold P. the unit's screen-wash trough.
A total of 51C,906 fish representing 54 specios and 181,313 blue crabs was collected at both units during 1982-1986. The most g
abundant fish species were spot, bay anchovy, hogchoker and Atlantic menhaden, which together comprised 91% of the total catch.
The estimated total impingement of fishes during 1982-1986 was 15,175,878 individuals and the estimated total impingement of blue crabs was 5,614,276.
In general, years of peak abundance varied among species.
l Peak years in impingement samplos vero not peak years of catches by commercial fisherman but instead otton resulted from fish kills associabod with low dissolved oxygen concentrations. 11 umbers of anadromous fishes impinged were lower during 1982-1986 than during the previous five years of impingement sampling.
t I
i
- i
1 TABLE OF CONTENTS Face ABSTRACT ......................................... 1 INTRODUCTION ..................................... 1 MATERI A LS AN D M ETH O DS . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?
RESULTS AND DISCUSSION ........................... 6
SUMMARY
.......................................... 11 LITERATURE CITED ................................. 13 TABLIS ........................................... 15 FIGURES .......................................... 23 i
s 4
4 4
4 i i
11 1
l INTRODUCTION
, The CalverA Cliffa Nuclear Power Plant (CCNPP) is located on the Western Shore of the Chesapeake Bay in Calvert County,
' The area of the Chesapeake Bay adjacent to the power Maryland.
plant is moschaline with salinities of 5-18 ppt and water temperatures of 1-28*C (Sollner and Peters, 1987).
Chesapeake Bay water is circulated through the CCNPP condensers for cooling, at a rate of approximately 73 m'/sec at each of the two generating units. The water passes under a 171-m long curtain wall at a velocity of less than 0.15 m/sec. Cooling water is then drawn approximately 91.4 m across an embayment into l the intake structure, where the velocity increases to 0.3 m/sec.
A curtain wall, extending to a depth of 8.5 m, limits intake water to mostly deep layers (Holland et al., 1984).
A At the intake, organisms unable to avoid the current, or those that move with it, encounter 12 pairs (6 pairs at Unit 1, 6 pairs at Unit 2) of rotating, 1-cm 3 mesh screens. The six pairs of screens servicing each unit rotate in succession so that each individual pair rotates for a period of 10 min and then remains stationary during the other 50 min of every hour. Organisms larger than the mesh size may be impinged on these screens. As the f screens rotate, inpinged organisms are washed into a trough and returned to the Chesapeake Bay.
Studies at Calvert Cliffs Nuclear Power Plant have been i g conducted annually since 1975 to estimate species composition, l 5*
l l 1
]
I 4
numbarn, weights, and sizes of fishes and rolected invertebrate.)
impinged. This report summarizes impingement dats for the S-year period of 1982-4986 (liixson et al., 1983, 1984; Breitburg et al.,
i 1986; Breitburg and llixson, 1986, 1987), examinos trends in ebundance of common species during that period and compares )
l impingament with that during previous years summarized in llorwitz
, I (1987) and reported in Naiman et al. (1978), liixson and White (1979), and liirshfield et al. (1980, 1981, 1982).
r 2
l -
r
1 MATERIALS AND METHODS Samnle collpetion and.Jmalynin J -
sampling frequency was based on 6-day cycles separated by 2-or 3-day intervals. On each sampling day, 1-h collections were made at each of the two generating units. If one unit was not in operation, sampics were collected only at the operating unit.
- The unit to be sampled first alternated each day. The initial 6-day sampling period, and succeeding odd-numbered 6-day periods, were scheduled as follows: the first collection began at 0000, 0400, 0800, 1200, 1600, 2000 h on the first, second, third, fourth,
}
fifth and sixth days, respectively. On each day the second collection began 2 h after the first had begun. Therefore, all
.- hours of the day were sampled in two 6-day sampling periods.
At each operating unit a 1.27-cm stretch-mesh nylon collecting not was placed in the screen-wash trough for approximately 1 h.
Impinged organisms were identified to species and the number of individuals of each species collected in a given sample was counted. Total lengths of up to 50 individuals of each species collected (carapace widths for blue cre,b, callinec.t_qn Enpidus) j were measured at each unit. The total weight for each species was also measured for each sample. Before each sample was collected, the number of operating circulating pumps was noted.
1
]
1 i
l.0 kh Statistical Methoda
('
- The mean c' bunt and weight of each species impinged per hour a
at each unit were calculated for each month. For summaries of the mean number of individual impinged per hour, standard errors are based on variances stratified by month. These mean values were h
multiplied by the total number of pump operating hours in each
.. month for each unit to provide estimates of monthly impingement rates for each species. prior to the 1985 study, unit operating hours were used instead of pump operating hours. Because circulating pumps sometimes operate and cause fish impingement h
during times that the units are not generating power, the use of pump operating hours in calculations should give a more accurate, but somewhat higher, estimate. For the purpose of this report,
( pump operating hours were used for all years so that the data would be comparable. For the same reason, data are not adjusted for any year for the percentage of sampling time that the not is removed from the trough for emptying bccause necessary data were not taken prior to 1986. Because of the changes made to make data used comparable, estimated impingements reported here for 1982-1986 will differ from those in nnnual reports previously submitted.
Estimates for quarterly and annual totals for each unit were made by summing nonthly estimates. Variance estimates were based upon procedures in Cochran (1977). The variance of each monthly estimate was calculated as:
0 10
] '
7 e
e Ho(Ho-no) x var y UU where i % ordinal number for each month j = ordinal number for unit Ng a total number of pump operating hours in month 1, at unit j no = number of hourly samplen i at unit j var o = varia, :o of the n, sampics collected at unit 3
Variances of the yearly estimatos were calculated as the num of the monthly variances at both unito. In cases where confidence intervals were computed, the formula was S 1 1.96/ Var, whern S in an estimated total and var is the variance associ.stod with R.
I t
1 i
I 5
I
RESULTS AND DISCUSSI0!i A total of 510,906 finfish representing 54 species and 181,313 blue crabs (Gil.linecteli napidgn) was collected in imp.i ng eme nt samples during 1982-1986 at the Calvert Clif fs Nuclear Power Plant.
Annual finfish impingement collections during 1982-1986 (102,181
! 71,580 individuals per year) did not differ significantly from
! those during the preceding 5-year period (39,126 i 5,203; approximato T=0. 87 9, 0. 4 <p<0. 5, d f =8 ; see Horwitz , 19 87 ) . However, the number of finfish in impingement samples during 1902-1986 was considerably more variable than during 1977-1981 (CV = SD + S=
- 1. 57 and 0. 3 0, respectively) and included the years of both highest (1984: 387,452) and lowest (198b: 16,379) numbers in samples during the 10-year period. Similarly, blue crab impingement during the two five-year time periodo did not diffor significantly, averaging 36,263 1 15,199 por year during 1982-1986 and 26,789 i 7,425 during 1977-1981 (T=0.560, p<0.6, df=8). Dlue crab impingement was more l variable during 1982-1986 than during the previous five year period (CV = 0.94 and 0.62, respectively), but the difference was not as great as with finfish..
Variation in numbers of finfish and blue crabs in impingement samples during the 10-year period was apparently unrels.ted to variation in the number of hours sampled per year. (Spearman rank correlation: Sp = 0.137, p=0. 707, df =9 and Sp=0.111, p>0. 7 61, df a9 for finfish and blue crabs, respectively). Furthermore, total annual impingements of finfish varied independently from that of 6
Y .
sl l
. blue crabs during 1977-1985 (Sp=0.535, p=0.111, df=9). Similar results were obtained in correlation analyses examining relationships W thin each 5-year period separately.
The number of finfish caught per hour in 1982-1986 impingement samples is presented for each year by season in Table 1 and summarized in Table 2. During 1982-1986, the prc6cminant fanfish species in impingement samples, and their percentage of the total
. five-year impingement were: spot (Leiosto.nqu xanthurun, 35%) , bay anchovy (Anchoa mitchilli, 29%), hogchoker (Trinectes mac31A142, 14%), Atlantic menhaden (firevoortin tyrannus, 13%), Atlantic croaker (Micrococonias undulatus, 4%), summer flounder (PAtalichthys dentatuu, 2%), Atlantic silverside (Menidig mgn[dja, 1%), northern searobin (Prionotus parolinus, 1%), and ukilletfish (gobiesox ptrumosus, 1%). The four most abundant finfish during 1982-1986 were also the four most abundant during the preceding
^
five years, although the rank ordur varied somewhat. However, finfish species ranking 5-9 in abundance varied between the five-f year periods both in rank order and species composition. The following species ranked 5-9 in abundance during 1977-1981:
1 Atlantic silverside, vinter flounder (1 jpoleuronectes americanus), alewife (Mapa destivall.g) , Atlantic croaker, gizzard shad (Dorosoma cenedianum) and weakfish (C.yntusian IRSAlis) .
f Perhaps most striking were the declines in anadromous clupeids and percichthyids, whose numbers in the chosapeake Bay were lower during the entire 10-year period under consideration than during previous years (Jones et al., 1988). Although differences in 7
i
l
'l abundances of individual anadromous species often did not differ significantly between 1977-1981 and 1982-1986 (Table 3), the five-
! year averago icpingements (based on annual sums) of all five anadromous specios typically impinged at CCNPP--elowife, blueback l
herring (bl52En pseudoharenavn) , gizzard shad, whito perch (ligt.p.nc
! ancricana) and striped bass (Morone naxatilln)--woro lower during 1982-1986 than during the previous five-year period.
For the majority of the abundant finfish species in impingement samples, most individuals were collected during a single acason of the five-year period 1982-1986 (Figures la-d).
These high-impingement episod<2s occurred during spring or summor of 1984 for the three of the four most abundant finfish species (bay anchovy, spot and Atlantic monhaden), and during spring or q suramer of 1983, 1984, 1985 or 1986 for other abundant species characterized by episodic impingement (Atlantic croaker, summer floundor, northern searobin and sk1110tfish). For other species, seasonal patterns of abundance were apparent but impingement was k s,pread more evenly among years (e.g. , blue crab, hogchoker, alewife and Atlantic silverside, Figures Ic and d).
1 Impingement of finfish was generally highest during spring (April-June) when large numbers of bay anchovy, hogchoker and Atlantic menhaden (during 1984) were collected, or during summer k (July-September) when, in addition to bay anchovy, hogchoker and menhaden, Atlantic croaker and spot were sometimes extremely I abundant (Table 1, Fig. 1). Peak blue crab abundances varied among years and occurred in either spring, summer or fall (october-8 I
December). In spite cf sexual differences in migration patterns, in any given year peak abundances of male and femalo blue crabs generally occutted during the same season.
Table 4 summarizes results of one-way ANOVAu testing for dif ferences in irnpingement among years for blue crabs and abundant finfich species. Tests were done on log-transf ormed numbers of individuals collected per sample hour. Although most species were significantly more abundant in samples during some years than othero, no pattern that would relate annual variation in abundance to variation among species in location or season of reproduction, or other aspects of the speciaa behavior or ecology was obvious.
Peak Maryland commercial catches and peak years of impingement did not coincido for any of tho abundant specian for whien comrnercial catch data are available (spot, Atlantic menhaden, Atlantic croaker, summer flounder, alewife and blue crab; Jones et al.,
1988). Ir. stead , extremely large impingements reflected in annual and seasonal patterns resulted from fish kills associated with low dissolved oxygen concentrations. For example, during 1984, three fish kills were recorded during opring-summer. On June 24, large numboru c' dead fish were seen in the intake canal and approximately 68,500 bay anchovies, 54,700 s.tlantic menhaden, 17,400 spot and 3,600 summer flounder were collected in a singic l-h sample at Unit 1. On August 2, 12,650 blue crabs were collected in a single hour at Unit 1 and on August 26, an estimated 146,400 spot 'ere impinged at both units combined during the 1-hour period each was sampled.
9 I
. 1
'g 1:stimated annual impingements of abundant fintich specion, all finfish combined and blue craba are plotted in Figures 2a-d.
During the f iwt-yea r period an estimated total of 15,175,878 finfish and 5,614,276 blue crabs was impinged at the two oporating i units at CC!lPp. lleavient impingement occurred in 1984 when an estinated 10,784,224 finfish and 2,656,2.10 blus craba woro
}
impinged.
e 1
1 1 ,
1 1
1 1
l I
l 1
10 I
l 1
SUIDIARY
.l
- 1. Spot, bay enchovy, hogchokor and Atlantic monhaden wore the most abundant finilah in impingement sarnples, comprining 91't l l of the total catch of 510,906 individuals at both un4ts i
combined. i
- 2. A total of 181,313 blue crabs was collected its impingeraent sartples during 1982-1986 at both units combined.
- 3. The estimated total irtpingement during 1982-1986 was 1 15,175,878 finfish and 5,614,276 blue crabs.
- 4. Numberu of finfish and blue crabs in 1982-1986 impingement sampies did not dif f er significantly f rom numbers in 1977-1981 l samples.
- 5. Interannual variation in numbers of finfish and blue crabc impinged was innopondent of variation in numbers of hours sampled por year.
- 6. Most abundant species were impinged in significantly larger numbers during some years than during others. }{owever, peak years of commercial catches and peak years of impingement did not coincido for any of the abundant species for which commercial catch data are available. Instead, large impingements often resulted from fish kills ancociated with f low dissolved oxygen concontrations.
- 7. Numbers of anadromous fishes were lower in 1981-1986 impingement samplea than in 1977-1982 samples.
11 i
? ..
l
-] 8. For many of the abundant species, the majority of individuale collected during the 5-year period was irnpinged during a single season, generally a spring or summer.
]
4
.i I
b 0
D I
L 9
a 1
1 1
l l
{
i u
11
L.t
'j + LITERATURE CITED
-73 Breitburg, D.L. and J.H. Hixson, III. 1987. 1986 Impingement
.5 studies ate Calvert Cliffs Nuclear Power Plant for Baltimore .
Gas and Electric Company. Report No. 87-7. Acad. Nat. Sci.
Phila. 37 pp.
. 1 Dreitburg, D.L., J.H. Hixson, III and R.P Gallagher. 1986. 1984 Impingement studies at Calvert Cliffs Nuclear Power Plant for !
d Baltimore Gas and Electric Company. Report No. 86-1. Acad.
u Nat. Sci. Phila. 23 pp. ,
b- Breitburg, D.L. and J.H. Hixson, III. 1986. 1985 Impingement -
W studies at Calvert Cliffs Nuclear Power Plant for Baltimore ?
Gas and Electric Company. Report No. 85-13. Acad. Nat. Sci.
Phila. 33 pp.
Cochran, W.G. 1977. Sampling techniques. Tl Mion. John Wiley l and Sons, New York.-
~
Hirshfield,- M.F.,' J.H. Hixson, III and J.D. _W hite. 1980.
Impingement studies I. Impingement <:ounts. Pages 9.1-1 to 9.1-h 5 in Non-radiological environmental monitoring report for
[j Baltimore Gas and Electric Company. January-December 1979.
Baltimore Gas and Electric Company, Baltimore, Maryland. ;
Hirshfield, M.F., J.H. Hixson, III and J.D. White. 1981.
" ). Impingement studies I. Impingement counts. Pages 9.1-1 to 9.1-
- 4- In Non-radiological environmental monitoring report for 3- Baltimore Gas'and Electric Company. January-December 1980. -;
L5 Baltimore Gas and Electric Company, Baltimore, Maryland.
Hirshfield, M.F., J.H. Hixson, .III and D.J. Hepner. 1982.
-Impingement studies I.- Impingement counts. Pagos 8.1 I to 8.1-18 -1D Non-radiological environmental nonitoring report for-Baltimore Gas and Electric Company. January-December 1981. .
Baltimore Gas and Electric Company, Baltimore, Maryland ~.
~l ^
Hixson,_J.H., III, - M. F. ^ Hirshfield- and D.J. Hepner. 1983. 1982 b Impingement studies at Calvert Cliffs Nuclear Power Plant for Ei Baltimore _ Gas _and Electric Company. Report No. 83-13. Acad.
Nat. sci. Phila. 23 pp. -
.h = Hixsonja J.H., III, R.P ~ Morin and R.P.
Impingement studies at Calvert Cliffs Nuclear Power Plant for Gallagher. 1984. 1983 I
- Baltimore Gas and Electric Company - Report No. 85-8. Acad.
N. Nat'. Sci._Phila. 26 pp. -
<5s
- i L
13 :
1
4 Hixson, H.J., T.I I and J.D. White. 1979. Impingement studies 1.
] Impingement counts. Pages 11.1-1 to 11.1-30 in Non-radiological environmental monitoring report for Baltimore Gas and Electric Company. January-Docomber 1978. Baltimore I Gas and Electric Company, Baltimore, Maryland.
!!olland, A.F. , M.H. liiegel, A.T. Shaughnessy, C.F. Stroup and E.A.
l Ross. 1984. Long-term bonthic monitoring programs near the Morgantown and Calvert Cliffs powet plant-third annual report.
Martin Mariotta corp., Columbia, Maryland.
b Horwitz, R.J.1987. Impingement studies. Pages 254-269 ID K. L. Ileck k ,
(ed.), Ecological studies in the middle reach of Chesapeake Bay. springer-Verlag, Berlin.
)7
(( Jones, P.W. , II.J. Spoir, N.ll. Dutowski, R. O'Riolly, L. Gillingham and E. Smoller. 1988. Chesapeake Bay fichories: Status, trends, priorities & data needs. Maryled Department of .
Natural Resources and Virginia Hirino Do.*ources commission.
227 pp. & addendum.
Haiman, R.J . , - H .J . liixson, II:I and B. White. 1978. Impingement studies I. Impingement cc,unts . Pages 11 4 co 11-33 lu Non-radiological environmental monitoring report for Baltimore Gas and Electric Company. January-December 1977. Baltimore Gas and Electric Company, Baltimore, Maryland.
i Sellner, K.G. and B. A. Potora. 1987. General chart.ctoristics of the Chesapeake Bay and study area. Pages 1-10 in K.L. Ilock
. (ed.), Ecological studios in the middle reach of Chesapeake j Bay. Springer-Verlag, Berlin.
Sokal, R.R. and F.J. Rohlf. 1969. Biometry. W.H. Frooman and Co.,
San Francisco. 776 pp.
b
- i tq l1 l i-1
( 14 o
I.
- l. - _ . . _ , _ _ _ , . _. _ . _ . . - , _ _ _ _ . , _ . . - , , . . . _ . _ , . _ . . _ __ . . . . .
k
., 0 1eele to. Meen (st) rweer of finfish (by trecies) ard blue crabs (Callinettis sapidus) collected ter
!]J hour and ruter of hours samtes f or each quarter et teth unita ck; ring tapinsement studies at the Calvert Clif f s hveteer Power Plant, January throvah Decerber 1982.
taxou JAh MAR AHL. Juw WL.$tP Oct Ott YEAR A60 VILLA RositA1A 0.03 (0.02) 0.00 (0.00) 0.02 (0.01) 0.01 (0.01) 0.01 (0.01)
ALota #EstivAtil 4.55 (2.12) 0.42 (0.12) 0.00 (0.00) 0.21 (0.07) 1.26 (0.51)
] AtosA P$ttf %ARENGUS 0.19 (0.08) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.05 (0.02) f BatVCoatIA ffRAWWUS 9.63 (7.45) 0.48 (0.15) 0.19 (0.07) 0.58 (0.22) 2.73 (1.60)
(10f 0$CMA CEPEDI AvuM 0.11 (0.04) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.03 (0.01)
ANCHOA MitCHILLI 0.22 (0.06) 14 43 (6.58) 0.52 (0.13) 5.11 (1.11) 5.13 (1. 72) 6 OPsAwVt 1AU 0.00 (0.001 0.28 (0.07) 0.33 (0.12) 0.39 (0.08) 0.25 (0.04)
COBitsor $1ttMosul 0.05 (0.03) 0.01 (0.01) 0.02 (0.01) 0.37 (0.07) 0.11 (0.02)
VaoPhYcis atGlut 0.04 (0.03) 0.03 (0.03) 0.00 (0.00) 0.05 (0.02) 0.03 (0.01)
CTFE!WODON VAtitGATUS 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.00 (0.00)
% PUNDULUS MEf tROCLITUS 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) i FUhDUlut MAJatls 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) k MrMttAS MAR 1IWiCA 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.07 (0.05) 0.02 (0.01)
MEN 101A MEN 101A 4.88 (1.86) 0.02 (0.02) 0.02 (0.01) 0.06 (0.03) 1.20 (0.45) cAsttRositus AcuttAtut 0.39 (0.18) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.07 (0.04)
.fA HIH'0 CAMPUS tRttius SYWCHATHUS FusCUS 0.00 (0.001 0.04 (0.C?) 0.01 (0.01)
D.01 (0.01) 0.06 (0.03) 0.00 (0.00) 0.07 (0.05) 0.00 (0.00) 0.01 (0.01) 0.03 (0.01)
PaloNOTus CAtotlWuS 0.00 (0.00) 0.04 (0.02) 0.01 (0.01) 0.00 (0.00) 0.01 (0.00)
MotoWE AMIR1cANA 0.04 (0.02) 0.02 (0.01) 0.00 (0.001 0.03 (0.02) 0.02 (0.01)
[ BalR0llLLA CHRYSOURA 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.04 (0.02) 0.01 (0.01)
.( CVNos"10N afCALIS LilolTOMus MANtHL*Us 0.00 (0.00) 0.00 (0.001 0.00 (0.00) 0.40 (0.13) 0.10 (0.03) 1.38 (0.73) 0.53 (0.17) 1.80 (0.34) 0.33 (0.10) 1.02 (0.20)
MICROPocculat DWOULAfdt 1.25 (0.47) 0.00 (0.00) 0.00 (0.00) 0.09 (0.03) 0.32 (0.11)
WTP508(tWWlus NIN121 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.10 (0.04) 0.03 (0.01)
)*l ^HASM00!$ Bo$QUlAWU5 0.00 (0.00) 0.00 (0.001 0.01 (0.01) 0.00 (0.00) 0.00 (0.00)
Gosl050kA Bosti 0.00 (0.00) 0.02 (0.01) 0.01 (0.01) 0.02 (0.01) 0.01 (0.01)
PEPkitus itI AtANTHUS 0.00 (0.00) 0.03 (0.02) 0.00 (0.00) 0.00 (0 00) 0.01 (0.01)
- PEPRILUS ALEP100TUS 0.00 (0.00) 0.00 (0.C1) 0.02 50.01) 0.16 (0.06) 0.04 (0.01)
PARALICHINYS OfWTATUS 0.03 (0,01) 0.00 (0.00) 0.00 (0.00) 0.10 (0.03) 0.03 (0.01)
- FtEUD0PltVR0ktC115 Antr. 0.09 (0.05) 2.32 (0.95) 0.00 (0.00) 0.01 (0.01) 0.62 (0.25) talWECitt MACULATUS 0.00 (0.00) 61.93 (11.07) 113.41 (11.81) 0.32 (0.07) 45.78 (4.21) 101AL F1WF15H 22.27 (8.93) 80.68 (13.26) 116.35 (11.64) 6.93 (1.45) 58.96 (5.10)
CALLikicits SAF10VS Malts 0.00 (0.00) 8.37 (2.21) 39.94 (4.12) 11.05 (1.97) 15.27 (1.31)
CAttlutC1ts SAP. FEMAtts 0.00 (0.00) 12.93 (3.01) 44.04 (4.67) 15.48 (2.40) 18.58 (1.56)
_g, ................. .. ................................... ...........................................
,), NUN 8tt Of M0UR5 SAMPLFO 114.00 122.00 124.06 113.00 473.00 l I
i 1
0
.y 15 l
d
,I fat >Le ib. Mean (st) ruter of finfish (ty trecies) and blue trabs (Callinettes sapidsm) toltetted m hour ord ruter of hours servied f or each (partet at teth mits dar Ing tepingewrit st e es at the Calvert Clif f s hucteer Power Plent Jntuary through Lesewer 1983.
TAa04 JAh kAR Ark'JUN JUL StP OCf+0tt itAt
. ..................... 3.............................................. . . ........ ...... . .
AhaultLA RositATA 0.02 (0.01) 0.03 (0.02) 0.03 (0.01) 0.03 (0.01) 0.03 (0.01)
ALosA AtsilvAtts 0.55 (0.24) 0.08 (0.03) 0.00 (0.00) 0.05 (0.01) 0.17 (0.06)
ALos4 P6'WOMAtthGUS 0.06 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.U01 0.01 (0.01) trtvocallA traAhwUn 5.46 (0.82) 3.16 (0.50) 2.50 (0.49) 1.07 (0.22) 3.13 (0.27) 00tosm A CIPtolAWUM 0.00 (0.00) 0.00 (0.00$ 0.00 (0.00) 0.v5 (0.02) 0.01 (0.01)
AhCHOA kip $tfUS 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00)
A4CNDA MITCHILLI 0.56 (0.09) 49.80 (6.43) 30.66 (13.(.4) 28.87 (9.10) 28.04 (4.37)
ICIALVtU$ PUNCTATVs 0.00 (0.001 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00)
$YkaDUS Futiths 0.00 (0.00) 0.00 (0.00) 0.01 (0.010) 0.00 (0.00) 0.00 (0.00)
OPSAkUs 1AU 0.11 (0.03) 0.45 (0.10) 0.55 (0.18) 0.10 (0.04) 0.31 (0.05) 00v1150* tituMosUs 0.00 (0.00) 0.09 (0.03; 0.08 (0.03) 19.25 (5.14) 4.71 (1.25)
UROPHYCll itGlVs 0.00 (0.00) 043 (0.20) 0.00 (0.00) 0.06 (0.02) 0.18 (0.05)
MCELUCClVS CllthtAtts 0.00 (0.00) 0.01 (0.01) 0.00 (0.001 0.00 (0.00) 0.00 (0.00)
Rl$$0LA MARG 1WATA U.00 (0.00) 0.00 (0.00) 0.00 (0.00J 0.01 (0.01) 0.00 (0.00)
$1104GYLURA AAtthA 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.01 (0.01) 0.01 (0.00)
CYPRI ODON VAttt0Atus 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
FUN 00tu$ htitt0CLITUS 0.00 (0.00) 0.02 (0.01) 0.00 (0.00) 0.01 (0.01) 0.01 (0.00) ruk0utus MAJAllt 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
MEMstAs MAtilWicA 0.01 (0.01) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
MINIDI A ttRYLLlwA 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.001 0.00 (0.00)
MINI 0la MtW10lA 1.45 (0.43) 0.06 (0.03) 0.07 (0.03) 0.51 (0.15) 0.51 (0.11)
CAtttpositVS ACULtATUS 0.01 (0.01) 1.23 (0.76) 0.00 (0.00) 0.00 (0.00) 0.33 (0.20)
$1h0NATHUS FU$0US 0.02 (0.01) 0.22 (0.05) 0.12 (0.(K) 0.16 (0.04) 0.13 (0.02)
FR10hotus CAROLIWut 0.00 (0.001 0.02 (0.01) 0.03 (0.02) 0.00 (0.00) 0.01 (0.01)
MORONE AMERICANA 0.00 (0.00) 0.01 (0.011 0.00 (0.001 0.00 (0.00) 0.00 (0.00)
CiulkOPRil115 $ttlATA 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
LIP m is Olssot.U$ 0.00 (0.00) 0.00 (0.00) 0.00 (0.001 0.02 (0.01) 0.00 (0.00)
PCMat0MUS SAtt Attin 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.04 (0.04 ) 0.01 (0.01)
B41RDIELLA CHtt$0VRA 0.00 (0.00) 0.00 (0.00) 0.00 (0.001 0.14 (0.06) 0.03 (0.01)
CtNOSC104 ktBULO$US 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.00 (0.00)
CYN01C10W Rt0Alll 0.15 (0.04) 0.57 (0.16) 0.76 (0.56) 0.17 (0.05) 0.42 (0.15)
Lil05fCMU$ KANTHURUS 3.91 (2.47) 0.73 (0.22) 4.L3 (1.33) 0.28 (0.14) 2.34 (0.69) i MICR0Pr 041Al UWOULAtus 4.34 (1.62) 1.17 (0.45) 160.92 (59.21) 1.89 (0.35) 41.47 (21.98)
$CIAINOP5 OctLLAth 0.00 (0.001 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.00 (0.00)
CHAETODIPittut fABER 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00)
ASTRosCOPU$ 0U11Alus 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.05 (0.02) 0.01 (0.01) i Hirt06Likklut HENf21 0.00 (0.00) 0.05 (0.04) 0.00 (0.00) 0.62 (0.17) 0.16 (0.04)
CHASM 00t$ $050UlANV$ 0.00 (0.440) 0.00 (0.001 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 00alos0MA BosCI 0.00 (0.00) 0.01 (0.01) 0.05 (0.02) 0.04 (0.02) 0.03 (0.01)
TRIChluRUS LtPTURUS 0.00 (0.00) 0.01 (0.01) 0.04 (0.02) 0.00 (0.00) 0.01 (0.01)
PEFRILUS it!ACANTNUS 0.00 (0.00) 0.00 (0.00) 0.03 (0.02) 0.00 (0.00) 0.01 (0.00)
, PEPRILV8 AltP100TUS 0.00 (0.00) 0.00 (0.00) 0.04 (0.02) 0.36 (0.24) 0.10 (0.06)
PARALICMints OthTATUS 0.09 (0.03) 0.68 (0.20) 2.94 (2.31) 0.02 (0.01) 0.93 (0.57)
P5tVDOPLEURONICitt AMCP. 0.01 (0.01) 0.59 (0.20) 0.01 (0.01) 0.00 (0.00) 0.16 (0.05) itlNttitt MACULATUS 0.48 (0.11) 47.35 (7.09) 60.36 (9.39) 1.11 (0.33) 27.91 (2.99)
M MPwuRut PLAGlusA 0.00 (0.00) 0.00 (0.001 0.13 (0.08) 0.00 (0,00) 0.03 (0.02)
- t .................................................................................. ..... ........... .
TOTAL f!kFISH 17.24 (3.12) 106.97 (10.19) 264.42 (95.29) 54.97 (11.44) 111.25 (23.81)
CALLlhttit$ $APIDUS MALES 0.00 (0.00) 9.12 (2.81) 27.3t.(3.83) 90.31 (24.42) 31.05 (6.04) o CALLihCCits $A9 ftMAtts 0.00 (0.00) 11.59 (3.26) 39.55 (6.01) 109.93 (25.34) 39.46 16.37) huMBit OF HOUR $ EAMPLED 117.00 128.00 118.00 116.00 479.00 i
1 t
16 l .
. . _ ___. _ _ _ _ _ . _ _ _ _ . ~ _ _ ~ ~ ~ _ _ _ _ _ - _ -- - _ _ __ _
Mean (51) esseer of fir fish (by species) Wi t>lve trata (Cetitr+cte6 septh) collectu per
.l ,
1 stile ic.
o r .% n n.,, of * ~r. .. ,i.a for ..<n o ri., .i w h m . w n, i ,,,e...ni . w ,,
et the Cet wrt tilf f s haciter PMr Plant. Juusry thrweh Dece<*er 19!.4 t famow JAu.Mit APa.Juw JVD st r oCt.ctC vtat i .. .................... ........................... ....... ... ..... ... ... ... . ........... .
Uuhown fl$N 0.01 (0.01) 0.02 (0.01) 0.00 (0.00) 0.00 (0.00) 0.01 (0.00)
AncultL A a0 sit AY A 0.04 (0.02) 0.11 (0.03) 0.01 (0.01) 0.02 (0.01) 0.05 (0.01)
ALosA AllflvAtis 3.79 (1.19) 0.43 (0.11) 0.01 (0.01) 0.08 (0.03) 1.07 (0.30)
) 0.00 (0.00) 0.00 (0.00) 0.47 (0.26) 0.00 (0.00) 0.12 (0.07)
, ALOLA P$tVDGHAtth00$
6ttV00RilA fitAhWUS 1.64 (1.21) 474.34 (471.51) 49.07 (19.37) 2.50 (0.92) 133.34 (110.76) 00R05tMA Citt01 AWuM 0.07 (0.03) 0.03 (0.02) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01)
AkCHOA MlfCMILLI 1.10 (0.30) 969.96 (5V4.53) 4.72 (1.30) 1.34 (0.57) 245.90 (149.60)
I ICIALURUS PUhCTATV5 0.01 (0.01) 0.00 (0.001 0.00 (0.00) 0.00 N.a) 0.00 (0.00) stWWus 70tiths 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.0J (0.00) 0.00 (0.00)
Or$Avd5 IAU 0.00 (0.00) 0.19 (0.07) 0.38 (0.08) 0.04 (0.02) 0.16 (0.03) 004ttsox struMosul 0.44 (0.14) 1.47 (0.22) 0.35 (0.08) 0.20 (0.08) 0, 2 (0.07)
! VaurHYC18 StolUs 0.07 (0.07) 0.06 (0.03) 0.00 (0.00) 0.00 (0.00) 0.03 (0.02)
I alts0LA MARGtkATA 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) sitDNGYLVAA MatitA 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.01 (0.01) 0.00 10.00)
CtPelW W ON VAtttGATUS 0.00 (0.00) 0.52 (0.19) 0.01 (0.01) 0.01 (0.01) 0.13 (0.05)
! FUNDULUS NtitP0CLITUS 0.00 (0.00) 0.07 (0.03) 0.02 (0.01) 0.00 (0.00) 0.02 (0.01)
! M[NIDIA SttiLLlhA 0.01 (0.01) 0.02 (0.01) 0.01 (0.01) 0.00 (0.00) 0.01 (0.00)
Mth101A Mtul01A B 88 (1.73) 0.54 (0.10) 0.02 (0.01) 0.00 (0.00) 2.34 (0.43)
CAlftt0$ttus ACUttATUS 0.56 (0.10) 0.03 (0.02) 0.00 (0.00) 0.00 (0.00) 0.1$ (0.03)
MIPPOCAMPV$ EttCTUS 0.00 (0.00) 0.02 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.0'))
l 0.55 (0.08) 0.30 (0.06) 0.06 (0.03) 0.32 (0.03)
} lfhGNATHU$ FUSCUS 0.36 (0.07)
Pil0N0ful CAtottuu$ 0.00 (0.00) 0.02 (0.02) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00, MOR06t AHtalCAhA 0,03 (0.02) 0.26 (0.06) 0.00 (0.00) 0.00 (0.00) 0.07 (0.02)
LtPLNil MAltoCN1WUE 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
P0HA10MUS SALTAftlX 0.00 (0.00) 0.00 (0.00) 0.03 (0.02) 0.00 (0.00) 0.01 (0.01)
BAlt0!!tL A CHet'JCUa4 0.01 (0.01) 0.00 (0.00) 0.00 (0.0)) 0.D0 (0.001 0.00 (0.00)
Cth0$C10W tt0Allt 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.01 (0.013 0.00 (0.00)
Lt1051(Mil KAh1HURU$ 0.00 (0.00) 16.59 (149.71) 1227.61 (866.01) 53.25 (16 01) 379.38 (232.29)
MICROPOGUNIAS UNDULAfv5 0.78 (0.30) 0.35 (0.31) 12.43 (8.82) 0.01 (0.01) 3.57 (2.36)
MJGil CLPHALUS 0.02 (0.02) 0.00 (0.00) 0.00 (0.001 0.00 (0.00) 0.00 (0.00)
MYP&O8LikWlus htNfil 0.01 (0.01) 0.03 (0.02) 0.00 (0.00) 0.00 10.00) 0.01 (0.00)
CNA$M30t$ B0$0VIAWU$ 0.00 (0.00) 0.06 (0.01) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0081050HA 805CI 0.00 (0.00) 0.09 (0.04) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01)
PEPRILUS filACANTHUt 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00)
PLPalLU$ AttP100TUS 0.00 (0.00) 0.00 (0.00) 0.14 (0.09) 0.45 (0.17) 0.14 (0.05)
PARALICMf His Othf ATUS 0.00 (0.00) 60.95 (32.?9) 4.46 (1.21) 0.00 (0.00) 16.52 (8.13)
) PstuDOPLLURONICits AMit. 0.13 (0.06) 0.04 (0.03) 0.00 (0.00) 0.00 (0.00) 0.04 (0.02)
I talWECft1 MACUL&fV$ 0.01 (0.01) 86.36 (31.61) 129.63 (25.22) 1.27 (0.43) 56.34 (10.42) svMPNURV5 PLACluSA 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) 0.00 (0.00) 0.01 (0.00)
TOTAL fthFl$n 17.96 (2.86) 1763.12 (1243.33) 14i'9.70 (894.18) 59.26 (17.18) 840.46 (392.29)
I .........<....................... ......................................................................
CALLlhtCTC$ 5AP10U5 MAtti 0.00 (0.00) 249.65 (49.85) 139.07 (13.05) 2.31 (C 46) 100.17 (13.01)
CAttlktcits SAP. f tMAtts 0.01 (0.01) 198.85 (38.76) 205.71 (19,83) 9.53 (1.66) 103.73 (11.09) hupB(t OF HOURS $AMPLED 114.00 116.00 122.00 109.00 461.00 f
l l
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e I
- . - - - - . . - - - - - - - - - . . . . . . - - .. - - - - _ - _~. -
I s
Table id. menn (It) ruter of (thf tsh (by afec tes) armi blue traht (Callirecte6 sapickis) collected rer hr.ur and rarter of hours 6ppled f or eMh warter et teth mits during 6ppingewnt stW6es at the Calvert Clif f s buclear Power Pltht, Jerseery through DetenMr 1985, 1AAON JA4 MAR Art. fJN JUL.$(P OCI f(At
................. ...........................................................'MC ......................
Acu!LLA totttATA- 0.09 (0.03) 0.05 (0.02) 0.00 (0.00) 0.02 (0.02) 0.04 (0.01)
ALOSA AtlftvAtts 9.15 (3.FB) 0.06 (0.03) (.00 (0.00) '.00 (0.00) 2.69 (1.11) titiv00t11A fieAh WS 0.71 (0.11) 1.17 (0.11) 1.24 (0.22) 47 (0.17) 0.91 (0.09) 00tos&ut CtPEDI AWM 0.09 (0.03) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.03 (0.01)
ANCHOA MliCnILLI 0.50 (0.16) 47.59 (16.64) 7.02 (1.66) 16.34 (5.4c) 17.19 (4.39) tit att ptXftNS V.00 (0.00) 0.00 (0.00) 0.04 (0.02) 0.00 (0.00) 0.01 (0.01)
OP5 AWS T AU 0.02 (0.01) 0.08 (0.04) 0.02 (0.01) 0.06 (0.03) 0.04 (0.01)
Ove:t$0x tituMosut 0.09 (0.03) 0.65 (0.12) 0.81 (0.31) 1.09 (0.25) 0.62 (0.10)
Va0PWTCil tiolui 0.00 (0.00) 0.10 (0.04) 0.02 (0.02) 0.00 (0.00) 0.03 (0.01) titt0LA MAtQiNA1A 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) sit 0N0YLURA MAtthA 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00)
CYPalkC00W VAtiff.ATUS 0.00 (0.00) 0.92 (0.32) 0.00 (0.00) 0.00 (0.00) 0.23 (0.08)
FUNDULUS NtitROCLifus 0.00 (0.00) 0.06 (0.06) 0.00 (0.00) 0.00 (0.01) 0.01 (0.01)
Mthlpl A 8ttfLLIWA 12 (0.09) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.04 (0.03)
Mtt101A Mt410!A 7.54 (1.56) 0.10 (0.04) 0.00 (0.00) 0.51 (0.16) 2.42 (0.461 At(Litt GUADRACUS 0.00 to.0D) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
GAstitositus ACULIATUS U.15 (0.05) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.04 (0.01)
HIPP0tAMPU3 EttCTU8 0.00 (0.00) 0.02 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) stuGEAf w$ FU$CUs 0.21 (0.06) 0.66 (0.13) 0.2T (0.08) 0.11 (0.04 ) 32 (0.04 )
I't!ON0ful CAROLlWUS 0.00 (0.00) 0.26 (0.07) 2.42 (1.97) 0.00 (0.00) J.67 (0.49)
Mot 0WE AntalCAhA 0.04 (1.02) 0.04 (0.02) 0.00 (0.00) 0.00 (0.00) 0.02 (0.01) ,
CrN0$Cl0N ttGALIS 0.00 (0.00) 0.00 (0.00) 16.48 (6.24) 0.89 (0.24) 4.30 (t.%) !
Ltiostows xawt wnul 7.44 (6.01) 1.22 (0.25) 0.42 (0.15) 0.00 (0.00) 2.58 (1.76) altt0Pocculat uwoVLAtus 8.05 (3.59) 0.00 (0.00) 0.02 (0.02) 0.03 (0.02) 2.37 (1.05) i, MPhoBLtwWlVS Ntkill 0.00 (0.00) 0.33 (0.10) 0.01 (0.01) 0.00 (0.003 0.08 (0.02) L C0010MMA so$CI 0.00 (0.00) 0.02 (0.02) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) t Piptilus illACAutMut 0.00 (0.00) 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00, PIPallus AttP100tU$ 0.00 (0.00) 0.00 (0.00) 1.45 (0.37) 6.30 (0.11) 0.42 (0.09)
PARAllCHINIS OtWiefut 0.00 (0.00) 1.63 (0.70) 0.07 (0.07) 0.01 (0.01) 0.43 (0.18)
P$tuDOPLtut0NLCitt AMit. 0.06 (0.05) 0.13 (0.07) 0.00 (0.00) 0.00 (0101) 0.05 (0.02) f alNICff 5 MACut ATUS 0.00 (0.00) 4.29 (1.54) 7.69 (2.18) 0.17 (0.04) 3.03 (0.67)
SYMPHURVS PLAGIUSA 0.00 (0.00) 0.01 (0.01) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 1Ph0(t0 lfts MACULATU$ 0.00 (0.00) 0.00 (0.00) 0.07 (0.04 ) 0.00 (0.00) 0.02 (0.01)
CHILOMicitRUS $CH0(PFI 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) j TOTAL fihFitM 34.55 (7.91) 59.42 (17.02) 38.07 (7.89) 20.01 (5.66) 38.63 (5.36)
\ .......................................................s.............................................
I CALLINttitt SAP 10V$ Malt $ 0.01 (0.01) 25.42 (2.92) 54.07 (1,21) 6.48 (0.98) 21.22 (1.96) l CALL 1WICits SAP. FINAlts 0.00 (0.00) 44.24 (5.42) 74.82 (9.71) 17.60 (3.13) 33.46 (2.90) l .......................................................................... .........................,
NUKett OF HOUt1 SAMPLE 0 124.00 106.00 106.00 83.00 424.00 t
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- , -- - -.. , -r- -
-.----.__-.-..-_-n- - - - - - - .
2
- Ipble 19. butts f $() ruter of finfl&h (tv SpeCitt) trd blue Crabs (telltreCtte tapidus) 6ollet ted g.cr pour movi tuter of hour 6 SeTitd f or **Ch Sattler et both mitt (turing 1#5.ingscent Studies et the Calvert Clif f s huc(ear Power Plnnt, Jamery through Dererter M86.
TAKON JAN* MAR Ait JUL' IIP OCI TF AR i
........................ ............... ........'JUN.................... .......'OtC ............... .....
Aht.ulttA 2051tA14 0.08 (0.04) 0.04 (0.02) 0.02 (0.01) 0.00 (0.00) t,.03 (0.01)
AL0$4 At$tivAtl5 0.49 (0.17) 1.10 (0.64) 0.00 (0.00) 0.09 (0.08) 0.44 (0.18) bt M 00R?lA titahWU5 6. 72 (3.94) 0.99 (0.18) 0.84 (0.17) 0.15 (0.04) 1.W (0.87)
AnCHOA mittulLLI 13.76 (2.01) 49.54 (19.26) 11.51 (4.15) 2tn59 (8.75) 26.44 (5.91)
OttANut 1Au 0.00 (0.00) 3.78 (1.15) 2.27 (0.57) 0.05 (0.02) 1. 6'l (0.35) 0081150X SftuMosus 0.10 (0.04) 1.59 (0.35) 0.48 (0.16) 0.04 (0.021 0.59 (0.11)
URC#NYCil t[GIU$ 0.00 (0.00) 0.03 (0.01) 0.01 (0.01) 0.07 (0.031 0.03 (0.01:
A t %0L A MARGIN 41 A 0.00 (0.00) 0.00 (0.00) 0.03 (0.02) 0.00 (0.00) 0.01 (0.01)
$1towGYLURA MAtthA 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
CYP 416KCON vat!!t.Atus 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.41 (0.20) 0.10 (0.05)
FUNDVLUS Ntitt0CLITUS 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
CAMausta AFFINil 0.00 (0.00) 0.03 (0.02) 0.00 (b.00) 0.00 (0.00) 0.01 (0.01)
M(N101A bitTLLah4 0.00 (0.00) 0.02 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
MtWl01A Mt'W10lA 0.91 (0.20) 0.04 (0.02) 0.01 (0 01) 1.08 (0.24) 0.49 (0.08)
CAsitt05ftVS ACVLEATUS 0.36 (0.09) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.08 (0.02) i HIPPOCAMPUS tttCTUS 0.00 (0.00) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
SinGhATHUS Fustus 0.00 (0.00) 0.20 (0.06) 0.21 (0.05) 0.03 (0.02) 0.14 (0.02)
Pt10N07US CAPOLINUS 0.00 (0.00) 3.03 (0.68) 21.40 (8.10) 0.00 (0.00) 6.10 (2.00)
CYNOSC10W ttGAt ts 0.00 (0.00) 0.03 10.02) 0.19 (0.08) 0.00 (0.00) 0.05 (0.02)
- LE10$fCMUS XANTNURUS 0.00 (0.00) 10.54 (2.24) 33.14 (13.40) 0.09 (0.04) 11.09 (3.35)
N!CROPOGOWlA5 UNDULAful 2.17 (0.44) 0.00 (0.00) 0.00 (0.001 0.00 (0.00) 0.47 (0.10)
MUCit cuttMA 0.01 (0.01) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
MVPLOSLENNIUS h(N121 0.00 (0.00) 0.01 (0.01) 0.01 (0.01) 0.00 (0.00) 0.00 (0.00)
CHASM 00($ 80$00l ANUS 0.00 (0.00) 0.02 (0.02) 0.00 (0.00) 0.00 (0.00) 0.00 (0.00)
. 00010$0MA losCl 0400 (0.00) 0.04 (0.02) 0.00 (0.00) 0.00 (0.00) 0.01 (0.01)
PCPilLUS talACANTNUS 0.00 (0.00) 0.00 (0.00) 0.12 (0,08) 0.02 (0.07) 0.03 (0.02)
PEPRILVS AltPID0fut 0.00 (0.00) 0.00 (0.00) 0.70 (0.13) 0.20 (0.07) 0.22 (0.04)
PARAtlCNTHYS OtNTAtus 0.00 (0.00) 0.03 (0.03) 0.21 (0.C7) 0.00 (0.00) 0.06 (0.02)
Pstt00PLfua0Ntetts AMit. 0.00 (0.00) 1.2T (0.42) 0,70 (0.21) 0.00 (0.00) 0.53 (0.13) itlhttits MACVLATUS 0.00 (0.00) $0.62 (19.93) 16.97 (3.48) 0.09 (0.03) 18.29 (5.59)
$YHPNURUS PLAGIUSA 0.00 (0.00) 0.02 (0.01) 1.30 (0.45) 0.00 (0.00) 0.32 (0.11) 0.00 (0.00) 0.02 (0.01)
SFHortotDtt MAC'.iLAtus 0.00 (0.00) 3.02 (0.01) 0.05 (0.03) 101At FlWFisN 24.59 (4.18) 123.26 (28.87) 90.16 (18.24) 28.91 (8.92) 69.18 (9.51)
CALLIWitifs 5AP10U5 Matts 0.00 (0.00) 23.71 (3.13) 35.04 (4.05) 1.29 (0.21) 15.52 (1.32)
CALLikttits SAP. FEMALIS 0.00 (0.00) 20.71 (2.87) 48.67 (5.79) 7.33 (0.99) 19.60 (1.65)
N# Git 0F M(UR$ SAMPLED 90.00 114.00 101.00 106.00 411.00 i
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.l table 2.Mean rueer of finf tsh (tv srecies) atd blue trabe coll.-ted ger hour in tryingement senples during l 1982 1986. Nwtetro are rotrded so that spetles prestnt tut less aburdant than 0.005 trdividuals/h in a single yeer or 0.0005 trelvt Aals/h Aring the five",ent perito ar e tourced to 0.0 iretylkels/h aburdarv e, e fl%1 ftAR iPICitt 1982 1983 1984 1965 1966 MEAN tt o.culLL4 aost:Ai4 0.01 0.03 0.05 0.04 0.03 0.032 0.007 ALO$A AttilvAtls 1.26 0.17 1.07 2.69 0.44 1.126 0.439 l ALCitA P$tuDOMA8tWOUS 0.05 0.01 0.12 0.00 0.00 0.036 0.023 satv00Rtl A finakws 2. 73 3.13 133.34 0.91 1.99 28.420 26.245 00kosts4A CtPtol AwM 0.03 0.01 0.02 0.03 0.00 0.018 0.006 ANCuoA MEP5t1U$ 0.00 0.00 0 00 0.00 0.00 0.000 0.000 Ahtwo4 nt1CNILLI 5.13 28.04 245.90 17.19 26.44 64.540 45.545 ICIALURus PUNCTAtus 0.00 0.00 0.00 0.00 0.00 0.000 0.000 stucr*Us F0titut 0.00 0.00 0.00 0.01 0.00 0.002 0.002
] OPSAWS TAU 0.25 0.31 0.16 0.04 1.62 0.476 0.290 1 0 Celts 0x situMDsus 0.11 4.71 0.62 0.62 0.59 1.330 0.851 U4;tNYC13 afGlus OM3 0.18 0.03 0.03 0.03 0.060 0.030 MERLLACIUS BillWIAals 0.00 0.00 0.00 0.00 0.00 0.000 0.000 j a titut t dARGihAT A 0.00 0.00 0.00 0.00 0.01 0.002 0.002
[ 5tRL*CVLURA MAelNA 0.00 0.d1 0.00 0.00 6.00 0.002 0.002 CYPRINODON VApitGATUS 0.00 0.00 0.13 0.23 0.10 0.092 0.043 FUNOUtVS Mtf!POCLiful 0.00 0.01 0.0t 0.01 0.00 0.008 0.0%
FUN 0utus MAJAtts 0.00 0.00 0.00 0.00 0.00 0.000 0.000 GAMuuslA AFFluts 0.00 0.00 0.00 0.00 0.01 0.002 0.002 ptMilRAS MAtilNICA 0.02 0.00 0.00 0.00 0.00 0.004 0.004 klNIDIA $tRfLLINA 0.00 0.00 0,01 0.M 0.00 0.010 0.008 Mtul0lA MtulpaA 1.20 0.51 2.34 2.42 0.49 1.392 0.424 ArtLTF.s ouADRACUS 0.00 0.00 0.00 0.00 0.00 0.000 0.000 GA$1tko$ttut ACULEA105 0.09 0.33 0.15 0.04 0.08 0.138 0.051 HitPOCAMPUS tRICTU$ 0.01 0.00 04 0.00 0.00 0.002 0.002 51NcNatus fusCUS 0.03 0.13 0.32 0.32 0.14 0.183 0.057 Pe!OwofuS CAacL1WUS 0.01 0.01 0.00 0.67 6.10 1.358 1.193 NoRout AMitlCAN4 0.02 0.00 0.07 0.02 0.00 0.022 0.011 CtW1ROPNittl5 $fattiA 0.00 0.00 0.00 0.00 0.00 0.000 0.000
- LtPON13 GlB90SU$ 0.00 0.00 0.00 0.00 0.00 0.000 0.000 LEPC*ll MAChkOCNIRU5 0.00 0.00 0.00 0.00 0.00 0,000 0.000 PMAlfMJS $At1 Alalx 0.00 0.01 0.01 0.00 0.00 0.004 0.002 BAlt0!!LLA CHRTSUUe.A 0.01 0.03 0.00 0.00 0.00 0.000 0.006 Cf405C10N WlDULOSUS 0.00 0.00 0.00 0.00 0.00 0.000 0.000 CYNOSC10N RtfAll$ 0.10 0.42 0.00 4.30 0.05 0.974 0.835 LE!D$ttmu$ xANIMURUS 1.02 2.34 P9.38 2.S8 11.09 79.282 75.082 Mirtr>0GONIAS UNDULATUS 0.32 41.67 3.57 2.37 0.47 9.640 7.984 MUGIL CEP MLus 0.00 0.00 0.00 0.00 0.00 0.000 0.000 seJCIL CuetMA 0.00 0.00 0.00 0.00 0.00 0,000 0.000 SCIAINOPs OCELLATA 0.00 0.00 0.00 0.00 0.00 0.000 0.000 CHALT00lpiteus taart 0.00 0.00 0.00 0.00 0.00 0.000 0.000 A51RCSCOPv3 Guttnibs 0.00 0.01 0.00 0.00 0.00 0.002 0.002 NrPs06LENNIUS pluf21 0.03 0.16 0.01 0.08 0.00 0.056 0.029 CHAsNoott 9050VIANUS 0.00 0.00 0.02 0.00 0.00 0.004 0.004 Goe10$0MA BOSCI 0.01 0.03 0.02 0.00 0.01 0.014 0.005 filCMlu8tV1 LtPfutus 0.00 0.91 0.00 0.00 0.00 0.002 0.002 PIPAILU$ 1RIACt1THus 0.01 0.01 0.00 0.00 0.03 0.010 0.005 l PCPRILU$ ALEP10LtJS 0.04 0.10 0.14 0.42 0 22 0.164 0.066 L PARALICHTNYS DENTATU$ 0.03 0.93 16.!? 0.43 0 v6 3.594 3.237 P$tV00PLEUPouttit$ AAtt. 0.62 0.16 0.04 0.05 0.3? 0.280 0.123 telWEC1t3 MACULAYUs 45.78 27.91 56.34 3.03 18.29 30.270 9.521
$tMPWRUS PLAGlusA - 0.00 0.03 0.01 0.00 0. .t
- 0.0 72 0.062 SPh0CR010t$ MACULafu$ 0.00 0.00 0.00 0.02 0.02 0.008 0.005 CHILOMYCitRUS SCNotPfl 0.00 0.00 0.00 0.00 0.00 0.000 0.000 UNKbOWN Fl5H 0.00 0.00 0.01 0.00 0.00 0.002 0.002 C (CT 5 $ L$ 1 27 3 0 00 17 2 2 1 2 36 .14 CALLINECits $4P. FEMAlts 18.58 39.46 106.73 33.46 19.60 43.566 16.298 1
20 1
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W
, Table 3. 14 umbers of anadromous finfish collected in impingement samplea during 1977-1981 and 1982-1986. Means and standard errors (in parentheses) are based on annual sums. Probabilities are based on results of Wilcoxon two-sample tests (test statistic = U.; Sokal and Rohlf 1969).
Numbers in impingement collections Species 1977-1981 1982-1986 U, P ,
l.
AdMA aestiyJL11E 1177 (627) 497 (187) 17 >0.2 i i
Alosa DER.udoharengue 222 (141) 17 (11) 22 <0.1 D9Iggss ceoedianna 307 (188) 8-(2) 25 <0.05 Morone Alff0I.iM DA 28 (9) 11 (6) 18.6 >0.2
$2IQna AAXatillE 2 (1) 0 (0) 22.5
<0.1 E
i l
21 l
- I 4
m ..-r y ,, . . , . , , _ , ,-.--e.1 -,,,,...,n , , - . . - ,_,..,-.m,.- - - _.
I l Table 4. Results of one-way ANOVAs testing for differences among years in numbers of individuals impinged per cample hour. Data for all samples were included. A second analysis which eliminated months of consistently below-I average impingements for each species yielded results that were substantially the same as those presented here. For each species, years are arranged from rost to least hignost numbers impinged per sample hour.
l Years not connected by vertical lines differ significantly (p<0.05) by the Bonferonni a pSsteriori test.
i Bay A.lantic Atlantic j Spot Anchovy Hogchoker menhaden croaker 1984 1984 1984 1984 3rd3 1986 1983 1982 1983 1984 1985 1986 1983 1982 1985 1983 1985 1986 1986 1986
~ 18 2 1982 1985 1985 1982 3 Summer Atlantic Northern Shilletfish Blue l flounder silverride searobin crab 1984 1 1985 1986 l 1983 i 1984 1 1983 1984 1985 1 1984 1983 1,- 1985 1932 1983 1985 1985
. 1986 1983 1982 1986 1986 1982 1986 1984 1982 1982 1
[ 22
\
l
- . _ . . - . . - _ . . - . . _ - . - . -- ~ . . . - - - . . - . . ~ . . . ~ _. -. -
1 4*
.t.
t 1200- .-. wo.u,mu. ...euru.
1000-
.800-i 600- I 400-200-0-
1 1 1 1 1 1 1 7 , ,
/ .'?
, 7 7 7 ; 7'F -
w y su r w w su r w se su r w. se su r _w se su r 1982 1983 1944 1948 1986 3
0 1000 w ance m
.c N 900-o -
e- 800-an
,c 700- '
' 600- -
E 500-u u 400-L 3 0-E 3 200-c
. 100-
@ .0.
, v 1 1
' _ *, ,e-e,d , , I1 1 _ A, m1 , _. W' sT-,p -
1 U w se su r w se su r. w se su r w se su r w se su r 1982- 1963 1964 198S 1986
~500
.-. t ,tw tyniano.
NO-300-
'200-
.100-e 0 "- ' - -- ^--
w se su 1982
'- 'r ^w J 1983'
^'se 'su w 'sp'r'su 'r. 'w 'se 'su 'r 1964
'w 'se 'su 'r 1985 1966 DATE Figure.la. Mean number:of individuals of abundant finfish species and blue crabs impinged per hour at CCNPP.
-W= winter (January-March), S P= spring (April-June),
SU= summer (July-September) and F=fa.tl (October-December). Note difterences in scale on vertical axes.
23
- - .- -..- ~.- . . . , . .. ,.- . . ~ , . - , , , . - . . - . . . - - - . . - . . ,-
.- ~ . . .- .. . -. . .
1
'sI 200 e o umme gwe unuetue 104 -
120- ,
80; I I
40-
'I Odm-t -tO i 7-i 9'e*i h --4=7 , 7 i-t-o w sP su r w se su r w se su r w w su r w se su r 1942 . 16e toe 4 10a3 lose a
I o 80 e-o Perenchthye eerdatwo m
W cn 60-
.E ct <
E
=l u o ,
D l h 20-C
- C g 0 +t i 7 7 74% $ , Ut-t-i 7 1 1 t-t-o I 7 w se su r w sP su r w y su r w sP su r w sP su r 1944 1983 1964 1D62 198J I 28 l ~ n1.a.tv. anue 24-20-l 16-
_l 12-B-
l- 4 0: ; ; ; e - ; ; - ; - ; +-+-+-, .A, e-,/ . , ,
.a. w SP Su r w SP DJ.r w sP Su r w %P 50 V w sP Su r 1983 g 1962 19 0 1964 8644 DATE 1 Figure ib. Mean number of individuals of abundant finfich species and blue crabo impinged por hour at CCITPP.
W= Winter (January-March), SP= spring (April-June),
1 SU= summer (July-September) and F= fall (Octobor-December). Note differences in scale on vertical exes.
24
e
- L 3
f o 24 .
e-e Gobiesos strumoves
\ '
3Os 2.D-
.{16-C '
2 L
12-U O 8-E a
c 4-g0 _ . _ . . ,
,^._._..-.+.A._
U x x i 1 1 , , ii1 1 , i . 1 , i W SP SU F W SP SU F W SP SU F w SP Sd F w $P 50 F E 1962 1963 1964 198S 1988 i L 3
3 O
C 500 e-o Cali!nectae sapidue N 450-1 0 i o 400-Di -
,c 350-
- ' 300-E 250-
. Ei 200- *
.O
.* l' E 150- .
3 100- /'-
50- /\,
.a c
o g
0 a , , ,~ ,. ,/ , , , ,. , i i
.-./
1 i ,
, J, , ,
y W SP SU F w ".P SU F W SP SU F W $P SU F w $P SU F
^ 1983 1964 198S 1986 1982
' l DATE l I!
l i
1!
!l l Figure ic. Mean number of individuals of abundant finfish species and blue crabs impinged per hour at CCNPP.
W= Winter (January-March), SP=cpring (April-June),
SU= summer (July-September) and F= fall (October-
, December). Note differences in scale on vertical axes.
25
_ _ _ _ _ _ _ _ _ - _ - _ _ - _ _ _ - _ _ - - - - - - - - - - - - - - - - e
- 1 140 mtw..m m.
120-I- ,
- 100-80-60-
/ ,
l 40-
}
20- /
I 0. , ,
1 1__ , L, ,_ ,,
, , , x , 1,,\.
w se su r w se su r w se su r w se su r w se su r u 1982 1983 10M 1985 1968 o
I 0 10 uo.. .tw.
N I
v e 8-l cn
.E O- 6- i
,E I _
o
.E 4-
.n E
o 2-
. C y
0 i 'i-I '? 74 i D7 i i i 7 -- 4' 7 w se so r a se su r w se su r w se su r w se su r 1982 1863 11M 1985 1958
! 10
.-. un eo m.nwa 8-6-
o 4-2-
0 1- -1 ., /e\.,,*
- s.1 1 ,
1 K*A, , _/ ,
w1982 se su r w1953 sP SV r W sP SU F w sP su r w $P su r 1984 1985 1986 DATE Figure ld. Mean number of individuals of abundant finfish species and blue crabs impinged per hour at CCNPP.
W= winter (January-March), SP= spring (April-June),
SU= summer (July-September) and F= fall (October-
, December).
axes, Note differences in scale on vertical 1
26
'l 10000- .-. two. .euwv. g 1000-100 -
10 f,/ .
9 1981 1d82 1d83 1984 1985 1d85 1987 m
2 O
.c
" e Anonce mnonM O
O 1000-V o cn kg 100-o-
B. .
1 h f E
10-
. 2 1981 1d82 1983 1984 1dB5 1d86 1987 30 E
1000-
$% /k W
9 e
'g 100-1 10-11 1 , . i 1981 1982 1983 1984 1d85 1d86 1987 DATE Figure 2a, Estimated numbers of finfish and blue crabs (1 95%
confidence interval) impinged at CCNPP. Note differences in scale on vertical axes.
27
l
)
m urevoortie tyronnus D 1400-O 7u E
BTC C U U cn g) 100-V.E D -o oao o- - - ,
EE5
,E. c io-
+/,
uo w
1 i , i 1981 1982 1983 1984 1985 1986 'O 4
e-* Micropogonios undulatus y 1000- ,,
. .o g E u 3 DC C $8 100-M8
- N ,,
10-y o ,, t i w
' J 1 i i i 1981 1982 1983 1984 1985 1986 1987
.)-
DATE
}
l 1 -
1_.
I Figure 2b. Estimated numbers of finfish and blue crabs (1 95%
confidence interval) impinged at CCNPP. Noto 7
, differences in scale on vertical axes.
28
b 300 - - - - -
e *-e Podchthys dentelwa a
200-o
' /\
100- j
/
i 9 l
! 3o 0 +
, ? ;
1981 .- 1985 1986 1987 3
O 6 180 C
- C 150-
-l
+
r
$ 120-
- .s
- c. 90
.E_ .
i u 60-c)
.O 30-
. E 3 \
. C ] e- e e n
e
-] 1981 19'82 1883 1I84 1685 19'86 1987 o
.h 200 y - - - - ~ .
Lu 160-120-
-o 80-40-0 ; ; ;' ,
1981 1982 1983 1984 1985 1986 1987 DATE Figure 2c. Estimated numbers of finfish and blue crabs ( 95%
confidence interval) impinged at CCNPP. Note differences in scale on vertical axes.
29 44, ; , w mpa.p .e
I O
60 m u.nw m.aw 5,0 - ,
40- o% -
g 1
30-20- "
10- \/
7m
\ 9 C 0 . .
o 1981 1981 1983 1984 i
1985 i
1986
<n 1987 3
0
.5 20000-
~ u nnr.h C
16000-V o
[
12000-
- n. '
E 8000-9e 4000-
,/
r, E
0 o/4
] 1981 1982 1983 1984 1985 1986 1987 O
~
E g .-. canin.ct.. . du.
W 3000-o
\
2000-1000- "
IN g 0 , , , , ,
1981 1982 1983 1984 1985 1986 1987 DATE
, Figure 2d. Estimated numbers of finfish and olue crabs (+ 95%
confidence interval) impinged at CCNPP. Note differences in scale on vertical axes.
30 2 e- . _ . . --