Text

Ichthyoplankton Entrainment Monitoring at Pilgrim Nuclear Power Station,Jan-June 1990
	ML20058E482
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Site:	Pilgrim
Issue date:	06/30/1990
From:	; MARINE RESEARCH, INC.
To:	;
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ML20058E453	List: BECO-90-054, Forwards Marine Ecology Studies Re Operation of Pilgrim Station,Semiannual Rept 36,Jan-June 1990; ML20058E464; ML20058E469; ML20058E479; ML20058E482; ML20058E486;
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-ICHTHYOPLANKTON ENTRAINMENT MONITORING AT PILGRIM NUCLEAR POWER STATION JANUARY - JUNE 1990 I

g Submitted to l

Boston Edison Company Boston, Massachusetts

!I by_

Marine Research, Inc.

Falmouth, Massachusetts cI r

October 4, 1990-u

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9011070188 901o29

{DR ADOCK 05000293 PDC

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TABLE OF CONTENTS SECTION PAGE I

SUMMARY

1 II INTRODUCTION 2

III' METHODS AND MATERIALS 4

IV RESULTS 8

APPENDIX A* Densities of fish eggs and larvae per 100 m8 of water recorded in the PNPS

.g-

-discharge canal' by species, date, and E!

replicate, January-June 1990.

-g APPENDIX B-Mean monthly densities and range per J g~

,100 m3 of water for the dominant species i

of fish eggs and larvae entrained at PNPS, January-June 1975-1990.

Available upc,n request.

LIST OF FIGURES FIGURE I

(

1 Entrainment sampling station in PNPS discharge canal.-

5 2

Location of entrainment contingency plan sampling stations.

7 I

LIST OF TABLES

(;

TABLE 1:

Species of fish eggs (E) and larvae (L)

,I.'

obtained in ichthyoplankton collections from the Pilgrim Nuclear Power Station discherge canal, January-June.1990.

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.i SECTION I

SUMMARY

I; Ichthyoplankton entrainment samples were collected from the

,~

Pilgrim Nuclear Power Station-(PNPS) discharge canal-in triplicate n

L twice per month in January and February, weekly from March through l

l' Juno 1990.

u L

During the first six months of 1990, 34 species were repre-sented in the entrainment samples at PNPS, 16 species by eggs, 29 species by larvae.-

The winter-early spring spawning period (January-April) was dominated by relatively small numbers of l

Atlantic cod, fourbeard rockling, American plaice, and yellowtail g.

l flounder eggs as well as sand lance, sculpin, and rock gunnel larvae.

May and June collections reflected the late spring-summer spawning species, Atlantic' mackerel.and the~labrids being dominant

. among the eggs and radiated shanny, sand lance, winter flounder,

)

fourbeard rockling, and American plaice being-the numerical 1

- dominants among the larvae.

Comparison'of January-June 1990 egg and larval densities with those observed 'from 1975-1989 suggested that Atlantic cod eggs were uncommon from February through April, rock gunnel larvae were

' uncommon in March, and larval winter flounder were uncommon in April and June.

Eggs and larvae found to be relatively abundant included rockling - eggs in April, mackerel eggs in June, and Atlantic herring' larvae in May.

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No densities meeting the unusually high criterion established under the. contingency sampling plan weie noted from January-June 3g-1990.

A larval lobster was taken in the collections for the first time since 1982; a stage I larva, found on June 26.

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1-SECTION II INTRODUCTION I

This progress report briefly summarizes results of ichthyo-plankton = entrainment sampling conducted at the Pilgrim Nuclear Power Station (PNPS) from January through June 1990 by Marine

Research, Inc.

(MRI). for Boston Edison Company (BECo) under Purchase Order No. 67253.

A more detailed annual report covering all 1990 data will be prepared following the July-December collection periods.

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SECTION III METHODS AND MATERIALS Eg.

Entrainment sampling at PNPS was completed twice per month during_ January and February, weekly during April-June.

Although weekly sampling was scheduled for March, only two collections were made due to failure of the net rigging.

Samples were collected in triplicate from rigging mounted approximately 30 meters from the headwall-of the discharge canal (Figure 1) at low tide during daylight hours.

A 0.333-mm mesh, 60-cm diameter plankton net l

affixed to this rigging was = streamed in the canal for 8 to 12 minutes depending on the abundance of plankton and detritus.

In each case, a minimum of 100 m'

of water was sampled.

Exact filtration volumes were calculated using a General Oceanics Model i

. 2030R digital flowmeter mounted in the mouth of the net.

All samples were preserved in 10% Formalin-seawater solutions and returned to the laboratory for microscopic analysis.

A detailed' description of the analytical procedures appears in MRI

-(1988) 2 When the Cape Cod Bay ichthyoplankton study was completed in

'1976, a contingency sampling plan was added to the entrainment monitoring program.

This plan was designed to be implemented if I

eggs or larvae of any dominant species proved to be " unusually L

I

' Marine Research, Inc.

1988.

Ichthyoplankton Entrainment Monitoring at Pilgrim Nuclear Power Station, January-December 1987.

III.C.1-6-10.

IN:

Marine Ecology Studies Related to Operation of Pilgrim Station.

Semi-Annual Report No. 31.

Boston Edison Company.

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9 ICHTHYOPLANKTON UNIT 1 STATION 100 METERS I

Figure 1.

Entrainment sampling station in PNPS discharge canal.

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I abundant" in the PNPS discharge samples.

The goal of this sampling

. plan' was to determine whether circumstances in the vicinity of

' Rocky Point, attributable to PNPS operation, were causing an abnormally large percentage of ichthyoplankton populations there to be_ entrained or, alternatively, whether high entrainment levels simply were'a reflection of unusually high population levels in Cape Cod ' Bay.

" Unusually -abundant" was defined as any mean density, calculated over three replicates, which was found to be 50% greater than the highest mean density observed during the same month from 1975 through 1989.

The contingency sampling plan consists of taking additional sets of triplicates from the PNPS discharge on subsequent dates to monitor the' temporal extent of the unusual density.

An optional offshore samplingfregime was also established to study the spatial

. distribution of the species in question.

The. offshore contingency l

program consists of single,.obliq'ue tows at each of 13. stations (Figure 2) on - both rising and falling. tides for a total of 26 i.

samples.-

Any contingency sampling _ requires authorization from Boston' Edison Company.

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Location of entrainment contingency plan sampling stations, C-1 through C-13.

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I SECTION IV RESULTS Fopulation densities per 100 m8 of water for each species listed by date, station, and replicate are presented for the January-June period of 1990 in Appendix A (available upon request).

The occurrence of eggs and larvae of each species by month appears in Table 1.

Ichthyoplankton entrained during January through April generally represent winter-early spring spawning fishes.

The 1

number of species represented in the discharge collections was five

'in January, three in February, 7 in March, and 19 in April.

Eggs were relatively uncommon since species contributing most to entrainment during this period spawn demersal, adhesive ~ eggs which

[.

are not generally subject to entrainment.

Four Atlantic cod (Gadus l

morhua)' eggs were taken in January (monthly mean density = 0.5 per l

l.

'100 m8); no eggs were found in February or March.

Eggs were more I.

l

. common in April with five species being represented in the catch.

In descending -order of importance they_were fourbeard rockling (Enchelyoous cimbrius), American plaice (Hippoglossoides plates-soldes), yellowtail flounder (Limanda ferruginea), cod, and haddock L

(Melancarammus aealefinus).

Monthly mean densities per 100 m8 of water amounted to'4.4, 1.4, 0.7, 0.1, and 0.1, respectively.

The number of species represented by.

larvae generally increased with time during the winter-early spring period; four species were taken in January, three were taken in February, seven I

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Table-1.

Species of fish eggs (E) and. larvae (L) obtained in ichthyoplankton collections from the Pilgrim Nuclear Power Station discharge canal, January-June 1990.

Species Jan Feb Mar Apr May June American eel

~ Anauilla rostrata L

Atlantic menhaden Brevoortia tyrannus E/L Atlantic herring Clupea harenaus-harenaus L

L L

Bay anchovy Anchoa mitchilli E

Fourbeard rockling Enchelvopus cimbrius E/L E

E/L Atlantic cod Gadus morhua E/L L

E/L E

E/L Haddock Melanocrammus aealefinus E

Silver hake-Merluccius bilinearis E

Atlantic tomcod Microcadus tomcod L

L L

Pollock Pollachius virens L

Hake Urophycis spp.

E Silversides

.Menidia spp.

L Northern pipefish Synanathus fuscus L

Scup Stenotomus chrysops L

Wrasses Labridae E

E Tautog Tautoca onitis L

Cunner Tautocolabrus adsoersus L

Snakeblenny Lumpenus lumoretaeformis L-Radiated shanny Ulvaria subbifurcata L

L L

Rock gunnel Pholis gunnellus L

L L

Table-1 (continued).

Jan Feb Mar Apr May June Species Sand lance' Ammodytes sp.

L L

Atlantic mackerel Scomber scombrus E/L E/L E

Searobins Prionotus spp.

Grubby Mvoxocephalus aenaeus L'

L L

L Longhorn sculpin M. octodecemsoinosus L

L Shorthorn sculpin M. scoroius Alligatorfish Aspidochoroides monoptervaius L

E/L Lumpfish Cyclooterus lumpus L

L L

~ Seasnail Lioaris atlanticus o Gulf snailfish L.

coheni L

L E

E/L Windowpane Scochthalmus acuosus E

E/L Witch flounder Glvotocephalus cynoclossus American. plaice Hippoclossoides platessoides E/L E/L E/L E

E/L L

Yellowtail flounder Limanda ferrucinea Winter flounder Pseudooleuronectes americanus L

E/L L

M M

'M M

E -W W

W M

M W

M

'M M

M M

M

.M M

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in March, and 17 in April.

Numerical dominants during the period included sand lance ( Ammodytes sp. ), sculpin (Myoxocechalus spp. ),

and rock gunnel (Pholis cunnellus).

Sand lance accounted for 17%

of the January catch, 35% of the February catch, 7% of the March catch, and 61% of the April catch; monthly mean densities were 0.1, 1.1, 1.2, and 89.7 per 100 m2, respectively.

Sculpin were absent in January, steadily increasing af ter that.

They represented 5% of

.the February catch with a monthly mean of 0.1 per 100 m3, 69% of the March catch with a mean density of 12.1 per 100 m2, and 22% of the April total with a monthly mean of 32.5 per 100 m3.

-Rock gunnel densities increased steadily as well.

Mean densities amounted to 0.2 in January,1.9 in February, 3.7 in March, and 17.1 I

per 100 m3 in April; these densities represented 29, 61, 21, and 12% of the respective monthly totals.

Among the larval sculpin, over the course of the seasonal period, grubby (Myoxocechalus aenaeus) were numerically dominant'followed by shorthorn sculpin (M. scoroing) and longhorn sculpin (M. octodecemspinosus); overall a ratio of 114:34:1 was recorded for the three respective' species.

May and June. collections (along with July)-consist of late spring-summer spawning. species.

May collections contained 16 species, June collections 22 species.

Among these, 10 and 12.

~

species were represented by eggs in May and June, respectively.

' Numerical dominants included Atlantic mackerel (Scomber scombrus) and the labrids.

Mackerel eggs accounted for 89% of all eggs.taken in May with a monthly mean density of 1477 per 100 m2 and 64% of all eggs taken in June with a mean of 2081 per 100 m2 Labrid eggs B

g

I (combined with' the labrid-Limanda group which they probably dominated) contributed an additional 6% to the May total and 33% to the June total with respective monthly means of 94 and 1054 cggs per 100 m8 of water.

Larval collections contained 11 species in May and 18 species in June with radiated shanny (Ulvaria subbifurcata), sand lance, winter flounder (Pseudooleuronectes americanus),

fourbeard

rockling, and American plaice being -the numerical dominants.

Radiated shanny contributed 33% of the larvae in May with a ' monthly water, dropping to 5% and mean density of 25 larvae per 100 m2

-F 3 larvae per 100 m8 in June.

Sand lance accounted for 29% of the May _ : total, declining to 1% of the June total with respective monthly mean densities per 100 m8 of 23 and 0.6.

Larval' winter flounder contributed 16 and 0.2% in May and June with monthly mean densities of 12 and 0.1 per 100 m2, respectively.

Rockling larvae were not present in May, but they accounted for 44% of the June 1

total with a mean density of 29 larvae per 100 m2 of water.

Finally American plaice were uncommon in May (1%, mean = 1 per

'100 m2) but.they represented 11% of the June total with a monthly mean density of 8 per 100 m3 Appendix - B lists mean monthly densities for each 'of the numerical dominants collected over the January-June period dating back'to.1975.

A general review of the data through the first six months of 1990 suggests that month by month egg and larval densities were.within the range of monthly mean densities observed over the past 15 years with the following exceptions.

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Atlantic cod eggs were relatively uncommon from February

=g-through April.

They were absent from the collections in

-g February for the third straight year; prior to 1988 they wore always taken in February although not in-high numbers.

Cod eggs were absent in March for the first time, and April's mean

-density of 0.1 eggs per 100 m) was the lowest value yet observed during that month, ranking below 1986 and 1982 both with 0.2 per 100 m2 2.

Fourbeard rockling eggs were relatively common in the April 1990 collections.

The observed mean density of 4.4 per 100 m2 '

of water ranked just ahead of 1986 (4.3 per 100 m 8 ), the previous high year.

3.

Atlantic mackerel eggs were abundant in June for the third consecutive year.

The 1990 monthly mean of 2001 oggs per 100-m2 -of water ranked just below 1988 (2220 per 100 m2), the top-ranked year, and exceeded 1989 (1013 per 100 m2), the second-place year, by a factor of 2.1.

4.

Rock gunnel larvae were uncommon'in the March collections.

The 1990 monthly mean density of'3.7 per 100 m8 ranked just

- above the 3.4 per 100 m2 observed in 1987, the lowest value on record.

Over the remaining 12. years when data were available, rock gunnel densities ranged from 6.4 (1983) to 117.8 por sB 100 m2 (1988).

5.

Larval Winter flounder were uncommon in April and June.

Monthly mean densities for 1990 were the lowest on record ir.

both cases.

April 1990's mean of 1.3 per 100 m3 rh.'ked below 13

I

I the previous low of 2.1 noted in 1901 and June 1990's mean of 0.1 ranked below the O.3 recorded in 1987.

In the case of April's. data set, no larval flounder were in fact collected during that month in-1984f however circulating water system pumps were not in operation then which appears to result in-low larval entrainment (see MRI 1990)*.

.6.

Larval Atlantic herring-(Clucea harenaus harenaus) appeared' numerous in May 1990 (mean = 3.0 per 100 m3) ranking ahead of 1975 (2.2 per 100 m8), the previous high year.

Although'several of the above monthly mean densities exceeded all other monthly means, no densities meeting the unusually high definition of the contingency sampling. program were encountered during the'first half of 1990.

-A larval _ lobster (Homarus americanus, stage I) was collected

.on June 26,1990 (replicate III). This was the first lobster larva taken in an entrainment sample since 1982 and represents the tenth-collected since studies began in 1974.

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' Marine Research', Inc.

1990.

Ichthyoplankton Entrainment Monitoring at Pilgrim Nuclear Power Station, January-December 1989.

III.C.2-11-19.

IN:

g Marine Ecology Studies Related to Operation of Pilgrim Station.

Semi-g Annual Report No. 35.

Boston Edison Company, l

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APPENDIX A*.=

Densities of fish eggs and larvae per 100 m2 of water recorded in the PNPS discharge canal by species, date, and replicate, January-June

. mm 1990.

g

Available upon. request.

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Accendix B

~

Mean monthly densities and range per 100 m3 of I

water for the dominant species of fish eggs and larvae entrained at PNPS, January-June 1975-1990.

Some standardization of data sats was required to adjust for changes in the sampling program which have occurred over the years:

1.

Only 0.333-mm mesh net data were used in those cases (1975)

I when field sampling was carried out using both 0.333 'and 0.505 mesh nets..

2.

When, as in 1976 - and 1977,,24-hour sampling - series were conducted, the samples taken nearest the time of daylight low tide were selected for comparison since this conforms to the

' I-I routine specification for the time of entrainment sampling used in all subsequent years.

3.

For the same reason only daylight low tide data were used when, in-1975, samples were also taken at high tide and/or at night.

4.

. Cod and pollock egg densities were summed to make - up the category " gadidae" 'since these eggs-were not distinguished prior to'1976.

In January and February when witch flounder do

-not spawn, all three egg stages are included in this category.

During the remaining months early-stage eggs are included with I -

the gadidae-Glyptocechalus group.

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5.

Beginning in April when the Enchelvoous-Urochycis-Peorilug grouping became necessary, the listing for Enchelyopus I

I.

g.

B cimbrius includes only late-stage egge, the two early stages being included with the grouped eggs.

6.

Since the Brstag-Scomber grouping was not considered necessary af ter 1983, grouped eggs were added to S. scombrus eggs in the table for 1975-1983 (B. brosme eggs having always been rare).

7.

Sculpin larvae were identified to species beginning in 1979 following Khan (1971).**

They are shown by species beginning with that year as well as added together (Myoxocechalus spp. )

for comparison with prior years.

8.

Similar results are shown for seasnail larvae which were not speciated prior to 1981.

9.

Although samples were in fact taken once in April 1976 and once in March and August 1977, comparisons with other years when sampling was weekly are not valid and consequently do not appear in the table.

Data collected in 1974 was not included because samples were not collected at low tide in all cases.

10.

When extra sempling series were required under the contingency sampling regima, results were included in calculating monthly mean densities.

Table format:

tiegn Range I

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Khan, N.Y.

1971.

Comparative morphology and ecology of the pelagic larvae of nine cottidae (Pisces) on the northwest Atlantic g

and St. Lawrence drainage.

Ph.D. thesis, University of Ottawa.

g 234p.

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E00S 1975 1976 +

1977 +

10'S 19'O 1040 1981 1982 1993 fireytertia tyrannus 0

0 0

I Gadulac Givotoccohahis I

Gedulac' M

(M)

(M) 0 0-1 00.7 0-5 034 19 0-1 M

2.1 M

M M

GElm m2dLL!B 00.7 05 034 19 0-1 O

M 0

0 0

0 Pollathna nr.sm 00.4 l'nthelvonts l'rophvens-lYprihn 1:nchelvonus gmttsm" M

0 0

046 l'rephytis spp.

0 0

0 I

labridae l.imanda 0

0 0

1 1.abridae 0

0 0

Seemist gamlin 0

0 0

f tionotta spp.

0 0

0 ISralichthys-Sconhthalmtn 0

0 0

0 l

i limnculoissoides 0

0 0

0 M

0 0

nigtesscudes 00.4 I

Total M

M M

M 0

01 047 0-5 034 19 0-1 I

Representa D m2dle and E. Utsm eggs in all stages.

" Represents all three egg stages, January through Aptd.

+ No samphng.

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l'GGS 1041 1083 1986 1987 1988 1090 1990 Inrevt=3rtin tyrannus 0

0 0

Gadsdac Givotocephahn Gadidac' (M) 0 (M)

(M) 0 0

(M) 02 0.62 01 0-2 Qud.ta m2 thug M

0 M

M 0

0 M

0-2 0.62 01 02 Pollathnt, y,gsm 0

0 0

1:nthelvoous-Urophyttu l'eprihn 1:nchelvoous cimtirius" 0

0 0

IJrophytis spp.

0 0

0 1 atiridue-lamanda 0

0 0

latiridae 0

0 0

Scomkr AD2 Ding 0

0 0

m m

Prionotis spp.

0 0

0 Paralichthvs-Sconhthalmus 0

0 0

J 0

!!ionontotuoidga 0

0 0

platenoides W

Total M

0 L.

M M

0 M

02 0.6-2 0-1 01 0-2

' Represents Q. M01luhl and L'. EElm eggs in all stages.

" Represents all three egg stages, January through April.

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I EGGN 19?$

1076 +

1977 +

1978 1979 1090 J 481 19 0 1083 lirevtortia tyr::nnin 0

0 0

I Gadalac Glyniocephahn Gadulac' M

(M)

(W (M)

(M)

(M) 03 (L5 (L3 0.43 02 046 0-1 Data mahun M

Lh L6 U

M M

0-4 03 0.4-3 02 046 01 l'ollachtta utts M

0 0

0 05 I

1:nchelvonta-l'rophytip a

l'eprthm I

I:nchelvoD3 etmterita" 0

0 0

l'rophytis spp.

0 0

0 1.abrnlac Limanda 0

0 0

f.abridae 0

0 0

Scomter hcombrin 0

0 0

150notus spp.

0 0

0 1%nhchthys-Sconhthalmus

()

0 0

I litotxwlointudu 0

M M

M 0

0 M

otatenontes 00.8 045 006 01 W

lotal le M

lh lli M

M M

03 0-5 03 0.83 0-13 OA6 0.5-2 I

'Representa Q mothun and l'. Ettm esp in mil stages

" Represents all three egg stages. January through April.

+ No samphng I

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l ettuary 1.0G$

1054 1985 10 %

1989 10 %

1080 10 %

I)revoortia gne 0

0 0

Gadsdac-Girottrechahns Gadidac' (d)

(M)

(M) 0 0

0 03 0-3 01 01 Gadtn nwrhua O

M M

M 0

0 0

03 03 01 01 1 ollachiuS XELD1 0

0 0

i I:r.chelvoous l'rephyrb-l'etvilus 1:nt helvonus etmtirits" 0

0 0

L'rechytts spp.

0 0

0 Latiridae l.imanda 0

0 0

l atiridae 0

0 0

Scomkr scomt'rus 0

0 0

lYionotus spp.

0 0

0 Paralichthvh $conhthalmus 0

0 0

Itinrmlotuoides M

0 0

0 M

0 0

olatenoides 02 0-1 5

F Total 2,Q LQ M

DJ M

M 0

04 03 0-1 01 0-1 0-1

'Reprencots Q. mothua and L'. EEI.01 eggs in all stages.

" Represents all three egg stages. January through April.

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I'GGS 1975 1976 +

1077 + +

1078 1970 10%D 1991 1982 10 0 Ilrevoortin tyrannus 0

0 0

I Gadidac Glyntocephalus Q,6 M

2,2 M

0 0

Q,h 02 lb3 0 32 02 03 Gadsdac' Dji (M)

(M)

(M) 03 01 01 0-1 00 0-2 0.6 24 M

M M

M 03 M

QEhe IE'I.!LW1 01 01 0-1 00 02 0.6-24 Pollachrus litign 0

0 0

0 I

f:nthelvonus-l'rophyrn.

Ptpritus I

I:nchelvonus timbrius" O

D 0

0 0

L yp.httu 6pp.

0 0

0 1.abrniac l.imanda 0

0 0

1.abridae 0

0 0

Sagal,q scombrus 0

0 0

l'rionotus spp.

0 0

0 Parnlichthys-Sconhthalmus 0

0 0

I limnontoissoides Qd Q,2 U

Q,2 M

0 M

niateuoides 0-1

. 0-1 07 0-1 0 14 0.5-17 I

Total Q,2 U

IU la ha M

jf,Q OA41 0-5 0.4 35 0 12 0.5 20 0-9 2 50

.I

' Represents late stage Q. morhtki and E. y.g.tm eggs.

" Represents all three egg stages, January through April.

+ No sampling.

+ + One samphng period only.

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f:0G$

1944 10 0 1956 1047 10 %

1049 1000 lirevoortin tyrannte 0

0 0

Gadidae 4,1votocenhalus M

0 0

M M

M 0

4 42 42 42 41 Gadsdac' (M)

(M)

(@

C)

(M) 0 0 11 0-2 02 02 0-1 01 Gadin mothua 16 M

M M

0 4 11 42 42 42 41 41 Pollathis yg.tm 0

0 0

I:nchelvonta4'ropbven-l'eptilus I:nchelvoous umbrg" 0

0 0

0 M

0 0

01 L'rophytm spp.

0 0

0 1.abridac Limanda 0

0 0

1.abridae 0

0 0

Mumter scomt'rts 0

0 0

Prionotta spp.

0 0

0 Paralichthys-S trnhthalmus 0

0 0

llinnocloissoides M

M 0

0 M

0 0

otatessoides 0-22 01 01 W

Total 19 14 6.6 EL2 M

M 0

0.7 30 09 0-34 1 219 0-81 0-2

' Represents late-stage Q. morhtw and E. y.ggm eggs.

" Represents all three egg stages, January through April.

3 I

I I

I

I I

I:GGS 1973 194 +

1977 197$

10W 1980 1081 10N?

1 9513 I

Ikevriottia tvinnnin 0

0 0

0 I

Gadulde-Glvtitottohnita M

M M

M 2,Q 0

0 M

(L5 02 2 14 0.h 12 07 03 Gadulac' M

(M)

M)

Q) d)

C M) 04 03 0.(- 14 03 04 0-3 0-3 (L2 M

M LQ M

{Li M

M Quin murhua 0-3 01-14 03 04 03 03 02 0

0 M1 0

0 0

0 lbilachnn EEEDI 04).6 I

l'nchelvotius-hm.

I'cDftlic I

1.nthtlYUJ33 (iml'riuh" M

M M

0 M

M 0-10 01 0-1 02 04 62 02 Urophytis spp.

O M

0 0

04LB l.abridac Lunanda 16 M

11,1 M

('

O O

O 0 18 0-7 0-26 0-2h 1.abrulac 0

M M

M 0

0 0

()

04L9 0-3 01 bcomter scomt' rub 0

0 0

0 htonotta spp.

0 0

I.

Purahchthys Sconhthalmin U

0 0

0 0-0.7 I

lliMuloissoides 1M M

21,6 1M M

M M

M platesheides 041 OA 0.h 79 0 49 1 18 05 01 04 I

Total

,123 lu (d.1 22,2 aft,1 IM M

M l 84 1 18 8 114 4 546 0 29 0-77 042 0.7 19 E.

' Represents late stage il gE!WA and f. virens eggs.

"Itepresents all three egg stages. January through April.

4 One samphng period only.

I I

I l'GGS 1954 1983 1986 1999 +

1988 1089 1943 lirevmrtia tugang 0

0 0

0

~

Gadadae Givetcxrnhalus Q,2 0

0 M

M 0

43 41 41 g

Gedulac' (1Q)

(11)

(M)

(Q1)

(M) 05 0-4 03 0-7 0-3 01 Dad.m E12thut 1Q M

M U

Qi U

0-5 0-4 03 07 03 01 L

Pellachius e O

M 0

0 0

0 0-0.7 I nchelvoDus Crophytt3-Emilla I:nchelvonus gging" Q2 Q

D D

0,Q M

02 0-6 0-14 0-10 06 0-28 t rophytis spp.

0 0

I I ateridac Lumtada 0

0 0

0 Q,1 0

0-10 1.atiridae 0

0 0

0 kv.mlsI munks 0

0 0

0 Pnenetm spp.

0 0

Paralichthys-Sconhthalmus 0

0 Q,3 0

0 0

0-2 Ilmnnelomoides C

M Q2 12 M

M otatesmides 1.5-11 0 12 0-1 0 14 0-9 0-7 Total 11.0 lu 2.6 IM 6.2 6.2 W

5-16 0 25 0-21 L29 0-27 1 28

' Represents late-stage D-D12 thug and E. m eggs.

" Represents all three egg stages, knuary through April.

m

+ Pump down no samphng.

E I

g

,e i

E

I I

1GGS 19'5 1976 19"P7 19'N 1979 10hD 1 9511 10 0 1%'

firevenrtin tmnnug 0

0 0

Q,1 0

0 0

(kl I

Gadadac-Gfyntoccohalin M

2,)

M 1(

1,{

2,1 Q,2 Qgi M

02 04, 0-11 0 14 05 06 02 0-2 0-18 Oddtdile '

M (M)

(1, )

(M)

(1[

(M)

(0,lt)

(L3 04 03 0 61 05 (L4 0-3 0-08 03 Cain muthun 13 U

h M

U 23 21 M

0-4 0-3 04,1 05 04 (L3 04th 03 EnllEbun Yegg 0

0 0

0 I

1:nchetvonus-Crophyrn-M M) 12j 23 M

M 2.3 3,{

{tl tgpnha 0-30 0-72 5 22 2 125 0634 4 14 1 19 lB 3-1B I

1:nchelvonoh uB1hhn 2.1.3 22.3 1M 10 9 M

fl.Q 11 3 Q.2 ILI 6 70 (L91 0-32 0 37 0 15 10 73 0 55 0-2 0-59 Urophyrn spp D

0 Dal 0

0 0

Q,1 0

Q,1

'J-3 01 003 I

1uterplac Limanda 145.3 12,Q 23Q3 IM3.4 L4212 2.QLLQ 2.0 2123 22,2 2 1248 3 23 3 1240 3 IIMW 6-9475 5-9331 2 94 4-24h 0-209 I

1.ataridae DJ 0

b 2M U

112,0 16 1) gj 0-2 0-55 0 169 0 19 0-431 0 23 0 3-15 01 Scomter scomt>rus" lj 10 g,Q

$6 h

$12 11LL i?)

IffQ,2 11(d I

0-8 0 11 0 104 0308 0.2 355 574 21 0 195 2-705 0-424 l'rionotus app iLQ3 0

0 0

0 0 03 l'arnhchthys Sconhthalmus 1QJ Q

gj Jgj 21,Q JM 212 11,2 9J 0-64 0 19 2 32 0-169 0 76 7 67 0 64 0 43 0-27 i

llipmutloiuoides 12 11 g,Q 1L2 M

1Q 2,2 lj lj platessoides 0-9 0-9 0 16 0-79 0 11 0 51 05-16 0-7 0.59 l

l Total 12M 14,2 226,3 20123 1(di2 3132,Q 12.LQ 2212 1812 12 1366 35 126 31 1324 13 12428 45-9921 1 10314 29 368 40-425 10-524 i

'Represcnu late 6tage D *.orhua and E. utuu eggs.

i3 "Inchules llnwmc Scomter. 1975 1981 I

I 11 I

m I:OGS 19%4 10k5 1086 10 0 1989 1094 IW3 nrevtuttia tyrannts 0

0 0

M 0

01 Gadidac-Glyptocenhahts 2,,Q LQ Q.,6 1,Q M

Q,2 M

08 03 0-5 0 13 02 0-4 03 Gadidac' (LQ)

(Q.1)

(Q,1)

(Q.QQi)

(2.1)

(M) 0-5 02 02 0-3 0-1 02 03 Qadtn mThua LQ QJ M

Q3 ki!Qi Qd El 0-5 02 02 03 01 0-2 03 Pollachius XEIm 0

0 0

l'nthelvonus-Urophyris.

gj 1{,2

{Q,Q

[0]

2M LQs (fQ{

Peptilus 0 41 0 98 3 189 l 66 0 131 2 894 4 271 1:nchelvonus rimtirits

]Li 2.6 221 IM 22.2 2D1 12.3 0 44 1 22 0 52 0 57 1 91 0-95 2 27 Urophycis spp.

O Q2 Ql QJ 0

M 0

0-9 01 01 0 12 Labridae Limanda 21 libid

$10 222 1915 12S9.8 22.2

=

0-40 0-4622 2 225 0 141 3 424 0-11376 1426 Labridae Qd 2.6 2d 03 U

$1 M

05 0 !6 0-13 0-5 0-23 0 19 0 16 Scomter scomtirus" 12,2 211M llnd 3hl 122M

$$11,1 1.42M g

0-44 520871 30 236 0 125 0 11981 0-22910 111023 Prionotog spp, 0

0,3 0

QJ 0

0 0

0-1 01 i

turnhchihys-Sconhthalmus 21 21Q 22d 2.9 7

2M 1hd W

4 0-23 3 85 2-92 0-28 0-392 0-132 0 92 fliorxwloiuoides AA L{

QJ 03 Q,Q3 21 Q

olatessoides 06 07 02 04 01 0 14 04 Total

!.,9.1 4051.5 225 $

lill 1252J 2191Q 1666.5 19-123 38-21505 75 513 21 407 17 12625 32 35350 22 11593

' Represents late-stage 11. mothua and E. yg,m eggs.

e "inchnies Ilrmme-5ctimter, 1975-1983.

I I

I'OGS 1975 1976 1977 197H 1979 1980 1981 1982 1983 f1revoortin tYinnDi$

Qd Q)

Q)

M Q1 10,1

[2 M

Q,}

02 0-1 03 0-9 0-2 M3 0 10 0 11 04 I

Gadidde GIvntocerihalta M

M M

2j Q

M 21 Qd Q,(

04 04 0 11 07 0-5 0 16 0-9 0-3 02 Gadidac' Q3 (12)

(12)

(LQ)

(Q,1)

(2,1)

(11)

(Q,,2)

(W 03 04 0 27 0-7 0-2 0 25 0 22 01 05 Qagm mothua Li L3 2,Q Q.6 21 12 Q1 Q,3 0-4 0 27 07 02 0-25 0 22 01 05 l'ollachim yggm 0

0 0

0 I:nchelvontas-l'rophyris-21$

IL}

21,4 21$

21Q 1Q 212

$,3 22.$

I l'eprihn 16-55 2 25 0 96 0 308 17 98 2 26 4 634 0 19 6 160 LDiht1Y,2 Din timtinus 2Q,0 21,6 112 10 20 19 3 1M s.2 li,Q I

1 76 9.90 5 114 0 33 245 2 51 7 38 0 23 0 39 1.ropbvris spp.

L1 Q1 11 M

191 21 22 LH 21 04 02 0-15 0-14 0-27 45 0 56 04 04 I

1.abridae l.imanda 2d22 Q 699.Q E?29,1 1112,2 5217,8 61LQ 3497 7 16Q23 L22M 809-5501 147 2258 289-19708 24 3876 1080-10505 248-1266 1b412537 276-4588 57 17918 I

1 alwidae 122,1 23.1 131,i 22h 21h)

IQLQ 122.0 LQ2 1$22 0 294 7 249 26 1181 0-262 50 774 13 191 b21492 75 238 14450 Scomkr acomtirus" 124 )

10

$1Q 11LB 1$.Q 1Q3 1112 1212 111,1 I

4-746 0.8 19 6-199 0-360 4 41 0 100 31083 0463 5 202 htonotus spp.

0 0

Q2 QJ QJ LQ LQ gj 12 0-3 02 0-2 04 0-7 0-2 0-5 litranchthys-Sconhthalmts 132 122 31 6 JLB hL2 22j QQ 23,2 fil 2 78 0 73 3 129 0 132 20 141 14 26 0 501 5-83 2 76 I-llinnoaloissoides Q2 Q.6 21 QS QJ IQ,$

LB 0

Q.$

platessoides 01 0-5 0-14 0-4 0-1 0-42 0-5 03 Total 2812,$

$$6J 62015 12212 5620,2 22QJ iLif 122M 2hli2 819 5718 342-2393 609 19425 225 5917 1401 11522 414 1652 407 22226 420-4912 309 18628 i I

' Represents late-stage Q. mothua and l'. Ytrens eggs.

Includes 11rosme Scomkr. 1975 1983.

I I'

l I i I I

I

MW1 1:GGS 1984 1985 10 %

1487 19R53 1980 10(N) firevoortia tyrannus M

M 2J Q1 11,Q 21Q M

0 51 08 0-9 04 0 56 9 36 03 Gadidac-Ebotocerihahn Zj E2 M

M M

Q1 Q

0 14 03 0-4 04 0-5 02 0-3 Gadidac *

(M)

(21)

(Q,1)

(Q1)

(M) 0 (E1) 03 0-1 0-1 05 0-2 02 QEh5 mothua Q,1 12 Q1 Q,$

Q2 0

Q2 0-3 0-1 01 05 02 0-2 Wilachius Yitsm 0

0 0

1:nchelvoots-Urtthyrip 12) 12,1 flg 222 22,2 222 22 2 J'tcritus 144 3 50 0-204 040 2 137 15 52 2 114 lithelvonta etmbrita 11

$1 212 212 21,Q 2M 19) 0 12 0 19 l223 3 52 4 196 11 93 0 66 Urophytis 6pp.

1,0 21 4.$

M 2,1 22,1 62 06 0-9 0 19 0-24 0-10 12 51 0 32 1.abridac-Limanda 1132,2 k29,2 1$2L,0 21hd 1100.$

2$211 2$24

=

47 5983 52 1126 332 4515 177 14223 238 3907 96h 90ll 205-1973 labridae 23 212 62,L 110 1 1Q18 7%.9 hgj 04 12 241 0 119 2-359 67-338 239 1516 0 287 '

W SE2mt scom'rus" 223 1Q2,$

27hl J224 221Q,3 10,12,2 2Q$12 148 3-349 0-990 12 411 27 6243 11 4 440 1 8742 Prini,atm spp.

Ql 23 12 12 3 13 23 QJ 0-4 0-15 l9 0-225 0 20 09 02 Parahchthys-$onhthalmus Dj d23 22j 21,2 492 122J 22,2 0-31 2 95 7-42 9 119 3-97 29 251 2 75 lIIDPMlQibhVidu Q.1 0

0 lj QJ 0

13 pt.itewndu 0-1 0-13 0-2 08 W

Total 11$1,1 22hl 22261 11$2,1 2L515

$$62,2 2129.2 93 6074 79-1798 4994712 313-14910 474 7879 1330-10308 333 10774

' Represents late-stage Q~ ERIjus and l'. EIim CSEs.

l

" Includes Ilrmme-Scomter. 1975 1983.

g I

I i

I 14 ae

I I

I AltVAI' 1073 1076' 1977' 10?N 1970 10!;0 1981 1982 1981 Clupea harenrus b M

0 0

0 M

M M

00.6 00.5 04).6 0-3 l'nchelvoons cimtirius 0

0 0

lautta Datun 0

0 0

I

I'autorolatire udsperstm 0

0 0

l'lvaria sutitufurenta O

D 0

0 0

I l'hohs gunntilas M

M LD U

M M

U 03 29 0-5 0-t 00.4 04).6 05.5 Ammodvic} 6p G

M g

Q$

M M

M 0-18 (14 0-11 0-38 05 0-1 01 Scomter womtitus 0

0 0

S!vorocenhalus spo M

M (M)

(M) 0 (M)

(H) 0-6 01 0-1 00.6 0-1 0.5 12 I

M.nenacts M

M 0

01 0-0.6 0416 M. octodccemsning M

0 M

3 I

00.5 04).6 0.5-12 M.acornns

()

0 0

I Liparts spp 0

0 0

0 (M) 00.5 L. atlanticus 0

0 0

0 L. echeni I

0 0

0 M

00.5 1

1%cudonteuronectes 0

0 0

l l

nmericanus lI l

u un u

u u

ao a

u u

I 0 25 3-13 0-12 0-39 U-5 02 4 14

'No namphng.

1 1

I

1 I

IARVA t:

1484 14M 1086 10 0 1988 1959 1000 Qu2EA h h 0

0 M

LQ 0

0 02 00.6 03 01 Enchehonus Erlitng 0

0 0

leu.tuita snan 0

0 0

I Tauuwoini.rus adspers.

0 0

0 I

(1 gun sutetufurcata 0

0 0

jh!g gunnelhn Q2 Q1 M

Q1 M

QJ Q2 01 00.6 03 01 01 0-1 01 Ammodvies sp.

0 4,M M

0 0

0 Ql 0-111 03 0-I m g,gning 0

0 0

btvonoccohalus spp.

(Ql)

(11)

(21)

(Ql)

(M) 0 0

0-0.8 0-4 02 0-1 0-1

=

hl. gg.Dann 0

Q2 0

QJ QJ 0

0 01 0-1 01 M udultilanDADagm Q2 M

Q&

Q2 Q2 0

0 00.8 04 0-2 0-1 01 M. gggp.ag 0

0 0

W Lang spp.

0 (Ql) 0 (Ql) 0 0

0 00.5 0-1 W

L. atlanticus 0

0 0

L.tuhsm 0

QJ 0

0 0

0 41.5 0-1 1%eudocteuronectes 0

0 0

W americane I

Total DJ 43.Q M

L9 LQ Q2 Q1 0-3 0 113 0 11 0-5 0-2 0-1 01 I

I g

,0 I

I l e tti.nrs LARVAL 1975 19 4

1077*

to?q 1999 tegn 1991 1g2 19g3 Clupca harennus b U

M 0

0 0

0 M

00.5 0-2 0-2 I

1:nchefvonus cimterna O

O O

O 1rglLSI fallin 0

0 0

I

'Inutocolatiros pdt.persus 0

0 0

De sutituf urcata 0

0 0

0 M

0 0

0-0.4 I

j'bgin gunntilis M

M M

d g

0 14 03 0 10 02 05 0-3 0.62 Ammalvtes 6p.

U g

M y

g g

g I

04 0.6 24 4 21 0.44 3-16 0-9 0.51.4 Mu scombrus 0

0 0

I Myoxocer>halus 6pp M

M (g)

(g)

(g) 07 01 0 26 0-5 04 0-0.6 0.5-3 M. senaeus M

M M

M g

I 02S 0-5 00.5 046 0-3 M. tx ttstecemspiriosus O

M M

0 0

006 0-4 046 1

0 0

0 M scorritm I

Litern app.

0 0

(M) 0 (U) 041.5 0-0.9 L. att uiticus 0

0 L. tchuli O

u 049 I

Pseintooleuronectes 0

0 0

amernonus u

u 0-17 0.8-29 4 58 0.7 10 3-24 0 12 2 11 l

'No samphng I

l 17 I

I iettuary LARVAL' 1%4 1085 1946 1987 10kR 1080 1940 Chimi harengus h.

M M

0 0

0 01 00.9 01 0-1 finchelvoous timt'rtin 0

0 0

'Isutoga 2 0

0 0

I Tauttwolatwus adspersus 0

0 0

l'lvaria sutitiifurtsta 0

0 0

D12bi gunnellta lu 21,2 M

M M

1 Lit L2 0 21 0 51 3 14 46 0 16 4 37 05 Ammodytes sp.

M 2M Q,1 0

M 0

M 0-3 0 132 04).6 02 0-5 Stomkr stombrin 0

0 0

h1voxoctohalts spp.

(M)

(1L2)

(M)

(AM)

(1,Q)

(0,1) 03 0 44 0-2 9 16 1 93 05 01 M acnnus DJ M

Q.2 M

M M

Q,1 gg 0-2 0 24 0-2 5 10 0-17 02 01 M. octoderemsninmus M

LQ QJ Q2 QJ1 0

0 0-1 0-3 02 0-1 01 M storpita 0

Q 0

M 3M L(t 0

W 0 20 07 1 75 03 Lipara spp.

0 (Ql) 0 0

(M)

(L1) 0 01 01 0-3 L. atlanticus 0

0 0

L.[2hud 0

94 0

0 Q,1 L1 0

41 41 43 Pseudocteuronectes 0

0 0

amtrKQDus I

1_,

m m

M 1M m

m m

0-26 0 223 5 16 17 21 3-109 5 45 0 11 I

I I

I.

I I

f.ARVAI:

1975 19%*

1977 "

1978 1079 1980 lost 1982 1983 1

Qgsg harenpa b.

Q3 0

0.1 0.1 2.1 Q,3 1,3 0-2 01 02 04 02 1 10 1:nchelvonus cimt'rnn 0

0 0

l lautona gatta 0

0 0

l

'Inutocolaterus adsperus 0

0 0

L'Itana sutitiifurcata 0

0 0

0 0,1 0

0 04).5

.I l'Ilula gunnellta lLQ IL2 M

22,1 M

112 6,1 2h47 (1.7 28 1 34 041 1 62 lb.M 3 23 Ammmivtes sp.

M IL1 3LQ dLQ 2Li 122,Q 2,2 1140 0.7 22 9-228 1 157 10.78 0413 0-29 Scomttr scomt'rts 0

0 0

Sfvoxocenhghg app.

(d.d 22.5 (n)

(62.1)

(312)

( 1 7. 16 )

(0,1) 17 137 1l45 1 35 0 182 5 91 047 0-17 I

M. at naeus 12,3 61,0 31d E

6,6 1 35 0 177 446 444 0-17 M. octodccemsninosus O

LQ L2 L2 Q,1 I

43 45 41 41 M. scorpna O

M Q,1 L2 0

0$

01 0d 1.ipara spp.

M 0

Q,d L2 (Q,1)

(Q,1)

(L9)

O.1 04 0.I8 0-2 0-l 08 L. atlanticus Q,Qd 0

Li 00,5 04 L.cohenf M

Q,1 QJ 0-2 01 02 B-l'setnionletironectes 0

0 Q,Dj Q,1 Q3 2,6 L}

nmerninus 00i 00.7 0-5 0 12 07 I

1.

n 1.

n 66 236 2tr%

11 293 3 385 43 169 31 174 143

'No sampimg.

"One sampimg perux! only.

I g

LI 1

l I

LARVAI 1984 1983 19R6 1987 1089 100 1940 Ogg harenntn h.

Q2 L2 Q2 0

L2 Q2 0

05 C4 01 0-18 0-1 I:nchelvonts amiti'.n 0

0 0

lauty unna O

D 0

0 0

I.

Tautorolatwin adspersts 0

0 0

llvaria subtiifurenta Q,23 0

gj 0

0 0

0 0-0.6 0-2 l'hLdn gunnellis E!$,2 (M

$$.1 2,(

1123 sLQ 21 j

0-482 0%

2 159 0 11 4 375 0 126 0-8 Ammodytes sp.

LQ IM Q2 M

2.1

},$

L2 0-3 0 47 0-30 01 09 0 11 04 Momter scomterin 0

0 0

Nfvonoccohalus app.

(2M)

(222)

(L),1)

(ff)

(g3,9 (kg1)

(1;l) 0 228 0 61 8-218 0 10 32 356 0183 2 22 M sendevs 20 2L3 60.2 21 122,Q 312 M

0 156 0 58 5-213 0-10 12 347 0 65 28 I

3 octtulecemsomosus 0

Q1 LQ Q2 QJ L3 0

0-2 0-3 01 0-2 0-6 g scorrita IL3 L3 d-Q 02 lia 211 Q&

0 3-72 0-3 0-12 0-1 0-26 0 119 0 20 llDE2 Srp.

(Q.Ed)

(01)

(Ql)

(0.1)

(21)

(21) 00.8 0-2

. 0-5 01 0-1 0-4 01

=

L. atlanticus 0

0.06 M

0 Ql QJ 0

00.7 0-4 0-1 0-1 j

L. coheni Q Qi DJ M

QJ Q,d Q3 QJ 0-0.8 0-2 0-2 0-1 0-2 0-4 0I hemlooleuronectes QJ Q.3 L$

0 0

W americants 04),9 03 0-7 Total 11$1 B2d land 10 23J,3 123,3 113 0 172 2 179 14-346 1 19 19.736 2 286 4-30 I

I 20 I

I I

1.ARVAF 1973 19 4 '

1977 19*8 1079 1 9510 108 L 1082 1983 Ogga harengus h.

13 0.,1 QJ 04 Ql 0

LQ L2 0 12 0-1 02 03 0-1 0.45 0-9 I

Enchelvonta cimivits 0

0 0

Q.Qd 0-05 Tautoga smta 0

0 0

0 I

Tautcwolatirts adspers.m 0

0 0

0 L'Eggg sut4iifurcata M

M QJ QJ gj QJ QJ M

0 19 0 19 02 01 06 0-2 0-2 0 11 I

Digla gunnellus l$

M 11 M

Q,1 M

31H M

0-8 0 19 05 0-13 0-1 0 14 0-75 0 21 Ammtsivtes sp.

Gj M

}h$3 211

$QJ jlQ

[J 1M I

0.81B 6-85 6-1252 26 196 0 171 7 66 2 261 0 58 Scomtu scomtirus 0

0 0

0 I

hivorocenhalus spp.

22 20,2 ZL3 (jd)

(IM)

(122)

(g32)

(1g) 3-12 14 57 0-57 1 32 0-59 2 53 0-347 0-24 M. aenacim 10 JM LM

$32 10 I

1 32 0 59 2 53 0 344 0 24 h1 octoderemsnmosus 0

0 Q_d DJ 0

42 41 hl. scorpius 0-3

. liDEE SPP-2.3 1M l$

1.1 f.J (M)

(2.2)

(IM) 0-11 0-72 0-7 0-8 0 29 03 0-4 1 69 L.ailantKin 23 0

112 03 1 69 L, gehgili O

Q3 0

0-4 he udonleuronettes M

21 2,Q 23 19 11 16 24 americants 0,8 10 0-21 0 127 0-8 2 21 0-3 0-36 0 13 Total 12 1 1911 di$l 1102 BLQ 06J 1BM

$12 14 43 55 154 21 1324 57 238 8-266 29-142 4 732 3 135 l-

'One sampimg period only.

l l

\\

21 l I

ADD 1 LARVAr 1944 1985 1986 1989 198%

1089 1900 Clupta harenrus 4 0

M Q.1 Q3 QJ Q2 00.9 0-2 03 02 D-2 Enchelvonus cimt'rtus 0

0 0

Q,1 0

QJ 0-1 0-1 Taut (ya 2nilig 0

0 0

0 Tautcwolat'rus ajstersus 0

0 0

0 Ulyarta sutit'ifurcata O

M M

M Q.(

Q1 f

0 21 04 0-3 02 03 Eh2hn gannt11m M

22 l M

M IL1 12 1 g

0 11 0-77 0-27 04 0 44 0 41 g

Ammmf yten sp.

0 2;Li 2fil ILQ M

$22 149 0156 0 64 0 14 4-344 Scomter stemteus 0

0 0

0 W

h1voxoccohalus spp.

($

(12L1)

(22f)

(fjj)

(263)

(@

0-11 18 442 1 295 3 111 6-73 2 72 W

M. acnaeus 23 12L0 IL2 25 2 2M 2M 0 11 18 442 1292 3 111 6-71 2 71 M. octulecemsmnmus 0

0 M

0 0

M 04 01 M scorpnis 0

0.1 02 QJ QJ Q1 00.8-0-2 0-2 0-2 0-3 Li[erts spp.

0 (gl)

($2)

(12,1)

(21)

(2,6) 1 20 0 0 99 0 33 14 g-i L. atlanticus 0

61 63 1M Il M

0-26 0 27 0-99 0-33 14

'L.[9htal 0

0.1 M

Q,1 0

QJ 42 41 41 41 i

Psemionicuronectes O

C 101 M

M lj 1

americanus 0-11 0 33 2 17 0-20 06 I

Total 62 1892 122.s LBJ 2.M 116,6 0-17 54 524 12 358 9-307 6 120 30-366

' Pumps down no samphng.

Ea'

MAX 1.AlWA f:

1975 1976 1977 1978 1979 1980 1981 1082 1083 Qu 53 harengtm h.

L2 0

0 Q,1 W

D 0

M Q Qd 0 24 01 00.5 (kl 00.5 I

I nthelvonus cimitte M

M Q,2 M

M M

LD Q,Qd Q) 0 10 0 13 0-1 0-19 0 19 5-11 0-3 04).6 01 f autoga entin 0

0 0

0 Q,1 2,Q 0

0 0

01 0 39 Tauttwotatirus udspctsm 0

0 0

0 0.2 L2 QE O

O 0-2 04 04).2 h sutitiifurenta QM M

M fjj M

IM IM M

IU 10 235 1 24 0 20 11 141 0 23 5 21 4 27 0 16 2 73 I

1hda cunnelim Dj 0

0 Q3 Q1tu o

0 Q)

M 00.5 04 01 0-2 00.6 Ammodvies sp M

22 L2 2M 2Q,1 M

LH 2M hj 0-22 04 0-7 0265 048 2-9 04 0-29 0.5 17 9:omter scomtirm Q,1 0

0 1,6 h,1 M

Q,2 Q,1 0

00.4 0 27 0 29 0-12 0.5-3 0-1 hlvoxorcohnha 6pp.

M QJ M

M (M)

(Q,1)

(M)

(1)J (6,1) 0 11 02 0-9 0 37 0 17 63 (bl 0 10 0-25 M

QJ Q,2 lj h,3 M acnacta 0 17 03 01 0 10 0 25 M octaleremsnmosun 0

0 0

I M gorpnn 0

0 0

Liparts app.

U 13,Q 21,2 32,Q

Q2 223 (16,1)

(11)

(IM) 0-30 6 31 0 112 1 92 6 40 16-45 2 69 0 12 0.5-37 16,1 2,2 12J L. athinticus 2 69 0-12 0.5 37 L. tuhgni O

Q,1 0

(L2 I

l INetalonieuronectes 112 2d 10.3 21.0 163 22.1 IL1 3Q.3 lin l_

ameritann 2 36 2 lR 4 29 0 129 13 50 11 75 0 98 1 49 0.57 I

Total 22.6 32,2 EL2 2112 1Q11 101d LM Lid h13 28-2S3 15 76 24 185 3.b660 66 210 59 167 12 234 k 182 9-192 I

MAX LARVAL' 1044 _

1985 1956 1987 10M 1989 1090 Oggg harengus h.

'd 0

M 0

Q3 Q

M 01 01 01 02 0 10 f nchelvonus etmt'rtus 0

11 M

M M

2.2 0

06 0-27 03 0-31 0-17 lautoga cmta 0

QB 0

0 0

01

'lauterolabrus adspersus 0

0 Q2 0

0 01 0

0-1 01 Ulyaria subbifurcata M

IM M

M M

2M

M 0-4 0-75 l 16 05 0 15 1 88 043 11.13 gunnelha Dj Q,1 M

0 Q3 0.2 Q1 0-4 00.6 01 03 05 03 Ammodytes sp.

164 Q4 U

QJ lJ, M

223 0 57 0-3 05 0-1 0 14 0 17 2 47 Scomber scoml*rus O

M Q2 0,1 0

02 Q,1 04 01 01 0-4 01 Nfvoxoccohalus spp.

(12)

(21)

(Ql)

(23)

(2j)

(M) 0-10 0-11 0-2 01 0-10 0-11 0 20 M. senaeus 13 2d Q1 gl 23 22 M

0-10 0 11 0-2 01 0 10 0-11 0-20 M. octoderemsninosus 0

0 0

M scorpius 0

0 0

1.ioaris 6pp.

(M)

(IM)

(21)

(ig)

(2M)

(IM)

(Il) 0-11 0-30 04 0-101 1 146 0-59 l 17 W

L. atlanticus M

IM 22 1M 2M 13 7J 0 11 0-30 0-6 0101 1 146 0 59 l 17 L. coheni 0

0 0

15cudonieuronectes 9,3 lil -

2,d 102 2M 2fj 12; americante 0 27 0-27 2 13 0-52 0 105 0-30 0 47 I

Total E2 Hd 2U 224 124 R2 2M 044 8 79 15-41 0-158 10-291 20 108 26 125 24

111E1 LARVAL:

1973 1076 1977 1079 1070 10S0 1081 1082 10 0 Cit'pca harengin h.

0 0

0 1:nchelvo'im cimbrnis

$Q,,1 212 12M fM 2,i 2dj 2C Q,2 123 I

0 137 0 46

$4 248 0 145 1 15 4-102 0 149 0-5 0-47 Iautoga gning QJ Q,d M

G Q

2,Q 11$

2,Q Q,$

0-1 05 0 27 0-37 0 11 0-20 0-162 0-27 0-2 I

Tauttwolabrus admerste IQ 24 IL$

12j 2M 2$,d 2212 M

124 0 39 0 13 0 750 0 107 4 78 043 0 1639 0 26 0.5-46 l'Lvana subbifurcata Q&

il 0

0 L3 21 2d La Q,2 02 0-28 0-12 03 0-12 03 0-5 0-5 l'11gla gunnethm 0

0 0

Q,2 0

0 0

I 0-2 Ammehtes sp.

O M

0 QJ M

0 M

0 Q,1 0-2 02 01 00.6 0-0.6 Scomber scombrus 29J d

li.Q lij 2,2 212 llM IQ 20,d 0 149 0 15 0 55 0 126 0 37 0 109 0 3662 041 0 354

- Mvoxocephahm spp, 0

0 0

(QA) 0 0

0 0-7 M. Engin O

Q1 0

0 0

07 0

0 0

M. octcxtecemsninosus i

M. scorphs 0

0 0

I Liroris spp.

11 Q1 Q

ILQ L}

C (11)

(0,1)

(LQ) 0-7 0-50 0 28 2 65 04 0-21 0 13 0-4 04 1A QJ LQ L. atlanticus 0-13 04 04

' L. gghsm 0

0 0

l.

I%eintooleuronectes

$j M

M 12,2 2J Eg L$

23 Q,3 amencanta 0.5-15 0-47 0 16 0 54 0 39 3-19 04 0-17 02 Total 112.2 111 2222 12M E15 lim 1122 23 1011 14 260 8139 125 641 51343 27 154 49-377 5-5423 0-136 2 383 l

l I

LI l

lI

I l_ARVA1:

1984 1983 1986 1987 1988 10R9 1 0'30 Clupea harengas b.

O M2 0

0 0

0-1 I:nche!voous gathj.m M

2M 2L1 M

M 2.2,3 M

0-1 3 73 2 74 0 33 0-4 3 137 0 120 lautoLa 2[utia O

M L1 M

M IM 21 0-41 0-5 0 12 0-2 0 35 0 10 lautogoluinig adsocrsus 0

$2 4M M

LD 222 22 0 208 0-157 06 05 4 196 0-30 l'lygjg subbifurcata 19 2f(

La M

M M

M 04 15 06 02 0 12 0-13 0-9 h gunneffus M

0 0

g 0-1 Ammatvtes sp.

M 0

0 0

0 Q.2 Q1 0-1 02 0-2 bcomtst teomttus M

M 11M M

M 1222 M

W 0-1 0-376 0-373 02 0 52 0 434 0-23 Myoxocechalus spp.

0 0

(M) 0-2 M. senaeus 0

0 0

0 M

0-2 M. octodccemsninosus 0

0 0

M. scoretus 0

0 0

0 o

l.ipurts spp.

(M)

(11)

(M)

(fd)

(M)

(M) l 0-13 03 0-11 0 13 1 32 0-7 0 13 L. atlanutus M

11 21 M

t.2 M

L1 0 13 03 0-11 0-13 1 32 0-7 0 13 L. E9hsnt 0

0 0

Ivudooleuronectes M

L2 M

M M

[l]

M americanus 0-24 0-7 06 0-4 0-4 02 0-2 I'

Total.

IM 2211 LOM IL:

121 22M Lt2 r

0-41 4 681 17463 0 61 5 69 57-771 6-198 I

26 E'

.-

ML20058E482

Text

SUMMARY

SUMMARY

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