Part 2 (9.411Mb)

This report not to be quoted without prior reference to the Council*

International Council for the Exploration of the Sea

REPORT OF TH£

C.M.1987/Assess:19

HERRING ASSESSMENT WORKING GROUP FOR THE AREA SOUTH OF 62°N

Copenhagen, 24 March - 3 April 1987

This document is a report of a Working Group of the International Council for the Exploration of the Sea and does not necessarily represent the views of the Council. Therefore, i t should not be quoted without consultation with the General Secretary.

*General Secretary ICES

Palcegade 2-4

DK-1261 Copenhagen K DENMARK

PART 2

152

Figure 1.4.1

R

0

0 0

0 0

0

0

I ^{F median}

I o

0

0

0

o I

~median ^point

0

I in buffer range

I

desired range of buffer stock

5

'c-..

-

-:- _154

-

•

I

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::=-:. ---·

__ ::.

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., :::: _:: ^{·- ·=-- ~·~ :} --=--·--·- ·-

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;

-

:-

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- - · - : :

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- - -

155

: __

- _:c:-.:~: ••

--:::·

---

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- - - · - - -

~

.rtL I l ~~I I 1·1·1 ~

llll,,~l'l.l.l~~l.l.llft

A

... , . .

~·

I · I

~-:-T·Ih!

ml.llll!Jlt

^{• 11 11 • 111}

^A

11 11

1984 year class 1985 year class

- 0.0

Q.l- I 2 -25

• 26-50 11 51- 100

11 ^101-200

Figure 2.3.4 0-group herring sampled by IKMT during the International Young Fish Surveys in 1985-1987.

•

J-1

\.)1 0'\

Figure 2.3.5

H ^F

L...-

^{~~ ~~~} I ··· .. , I ···... ^r\···' 4 .. _ .. · ^(-~ T( ___ )T ···-··' / •, ^6. L ^r··\.J

^I

^{(--~, ~~T}

^... _.~

I

~\

H ^c~~: ·, __ , E / ^D

¹1

x 106

···('E ..

~.F~C::L.~.:SS :S;TF:Ef"'··.J(~TH as 1-ringers estimated from VPA

60000 - . - - - -

l::::::j

~

45 50 55 60 65 70 75

Year class

1-'

\J1 --J

158

Figure 2.4.1 Area Sub-divisions used for presenting results of acoustic surveys (see Tables 2.4.1-2.4.7).

E5 E6 E7 E8 E9 FO Fi F2 F3 F4 F5 F6 F7 F8 F9 GO Gi G2

52 51 50 49 48

46 45 44 43

40

35 34 33

31 30 29 28 27

:t

_.rn_r~ .~ ~

.~~

_'J

^~a.

^,.----

A 11t _~

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L

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I G-.

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~~ I h\ ~~lj

^~,-

~ ~ ^{~ -~}

~ r~

p-

""" ) ^A L>-v:·" ~

Figure 2.4.2 Definition of sub-areas, November-December, acoustic survey.

159

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H

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:: ,,_- I.

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^{·:. ;, ;,.·}

''· :•:.:,!':;_

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-.:-r

E' ^{. .;,"} i I

:--' ., '•:tc _..,

:- ·- _:· ; :. -'·'--

'

._

Figure 2,8,2 Estimates of spavming stock from

VPA (SSB),

larval surveys (LPE) and acoustic surveys

(ACOUSTIC), VPA

based on F2-6

=

0.48.

'000 tonnes

(r~ ·:]? ^ID

{:::.I ':=:.·' c.::.)

Cl ^\ __ .. _C·

1

~~72

1973 +

^D

+

^D

+

⁰

1976

D

1977 O+

1 D7EI +D

"1979

0

+

·19eCJ·

0

+

0

>+-

*'

"19[~j3

>< +

⁰

"1984 >+O

, ...

D +

*--

;:-:; D

+

):-~ (/) I (") ((;t

-o

D

rn

^1'1

i[l ~ CJ

161

o;

(!) c c 0 ....>

a a a

-c ___) (!) _..)

>-<

FISH STOCK SUMMARY

Figure 2.8.3

STOCK: Herring - North Sea

13-04-1987

1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100

Trends Ln

~LeLd

and fLshLng

mortaLLt~ (f) - - YLeLd •••• F

1951 1955 1959 1963 1967 1971 1975 1979 1983

Year

A

1.5 1.4 1.3 ;::, ..

(!)

1.2 ~ 1.1 ~

m 1.0 ~ 0.9 ~

_..) _..)

0.8 0 ....>

t.

0.7 ~ 0.6

g'

_J 0.5 {j

_J 0.4 4--

m 0.3

w

t.

0.2 ~ a:

0.1 0.0

5500 5000

(!) E 4500

_..)

....>

m c 4000

_..)

c :3:

g_

3500 fiJ

....> ₃₀₀₀

0

00

(!) 2500 c c a 2000 ....>

a a a ₁₅₀₀

~

tD 1000

(f) (f)

500

Trends Ln spawnLng stock bLomass (SSBl and recruLtment (Rl

- - SSB ·--- R

1951 1955 1959 1963 1967 1971 1975 1979 1983

RecruLtment

~ear

cLassy SSB

~ear

B

55000 50000 ~

0) c 45000 -~

___) ___)

40000 -~

c

_..)

35000 0 c 30000 ~

25000 ~ 0 20000

-E

....>

c 15000 ~

....>

_..)

10000 [ 0

(J)

5000 0:::

1-' 0'>

1\)

a;

(!) c c 0 _,.) 0 0 0

~

'"U

....) (!) _..)

>-<

550 500 450 400 350 300 250 200 150 100 50

Figure 2.9.1

FISH STOCK SUMMARY STOCK: Herring - IVA and IVB

13-04-1987

Trends Ln ~LeLd and fLshLng mor~aLL~~ (r) Trends Ln spawnLng s~ock bLomass (SSBl and recruL~men~ (R)

- - YLeLd ·--- F

1.1 1.0 ~

::::~ ...

0.9

cp

N 0.8 ~

0.7 m 0

_..) ~

0.6 ~

_,.) L 0.5 ~

m 0.4

_3

..c _(J) 0.3 ~

m m 0.2 ~

(!)

>

0.1 a:

--SSB ·--- R 800

m 700

_..) E _,.)

m 600

. c ^..) c :>::

0 a.. 500

(/) _,.) 0

'(i) ⁴⁰⁰ m c c 0 300

_,.) 0 0

?

₂₀₀

~

([}

U1 U1

100

8000

7000 0

c 0

. ^..)

_..) _..)

6000 _..) E

. c ^..)

5000 • 0 c

4000 N m m 0 3000

"5

_,.)

c

(!)

2000 ~

_..) ::I L 1000 ~

a:::

0 I''' 1'''1'''1'''1' ''I'''Fn I'' ¹ I 111 I 111 I 111 I 111 I 111 I 111 I O.O

19731974197519761977197819791980198119821983198419851986 0 1'"1"'1"'1"'1"'1"'1'¹¹1"'1¹"1"¹1'"1'"1'"1'"1 0 19731974197519761977197819791980198119821983198419851986

Year RecruL~men~ ~ear cLass, SSB ~ear

A

B

cont•d.

I-' 0'\

\..N

Figure 2.9.1 cont'd.

FISH STOCK SUMMARY STOCK: Herring - IV A and IVB

13-04-1987

Long-~erm ~LeLd

and spawnLng

s~ock

bLomass

Shor~-~erm ~LeLd

and spawnLng

s~ock

bLomass

assuming 20% exploitation on 1-ringers

- Yi..eLd ·--- SSB

::: 1111111!rlllllllllllllllllllllllllllllllllllllllll ::: • .

E ^..) ...>

0.035 0.7 CJ)

c (f)

_..) Q)

CJ) c c

~ 0.030

:3: c

0.6

g_ 3

...> ^(f)

. ^{..) 0}

::J ...> 0

c.. 0.025 0.5

°

^?

0

(J) CJ)

c.. .x ro

c.. 0.020 0.4 ~

ffi

(I) a. _..) ^{...> ...}

""0 ^::J c

i

0.015 0.3

5 . ..)

.

^{..) (J)} ""0

>-< ^{L __)} Q)

L . .J

0.010 o·.2 (J) >-<

a.

ID

::: JIIIIIIIIIIIIIIIIHWiltUmJmWJmlmmlll

_{0.1 0.2 0.3 0.4 0.5 0.6 0.7 O.B 0.9 1.0}

:::~

Average fLshLng

^mor~aLL~~

(ages 2-6,ul

c

1300 1200 1100 1000 900 BOO

700 600 500 400 300 200 100

assuming explci ati0n en ·-rinyers - - Yi..eLd ·--- SSB

F

0.1

0.1 0.2 0.3 0.4 0.5 0.6 0.7 O.B 0.9

Average fLshLng

mor~aLLt~

(ages 2-6,ul

D

2600 2400 ~

_..)

+>

2200 CJ)

• ..> c 2000 c :3:

0

1BOO ~

...>

1600 0 HOO ~

c c 1200

3

1000 0 0 0 BOO

CJ)

600 ro ⁰⁾ ...

400 c

• ..>

ID 200 ^(J) _(J) 0 1.0

cont'd

1-' .p.. 0\

0')

~

...,

. ^...)

:;I

'-0 (J)

'- '-CD

a.

-o

_ ) CD _...)

>-<

Figure 2.9.1 cont'd.

FISH STOCK SUMMARY STOCK: Herring - IV A and IVB

13-04-1987

0.045

Long-term

~LeLd

and spawnLng stock bLomass

assuming no fishing on i-r~ngers

- - YLeLd ·--- SSB F o.1

0.040 I I I I I I I I I I I 11 I I I I I I I I I I I I I I I I I I I I I I I I I I I U±±l:±±J:.I I I

0.035 tllllllll

trn

11111111111111111111111111111111111111 0.030

0.025

0.020

0.015

0.010

0.005 Ill 11 I I I 11 I I 11 I I I I I rn·i-IJ.! I 11 I I I I I I I I I I I 11 I I 11 I I I I 11 0.9

0.8 (J) _...)

...,

s 0.7 0')

. c ...)

c 3:

0.6

g_

...,

(fJ

0.5

°

0') ...':!::

0.4 ~

...,

. ...) ::l

0.3

h

_(J)

'- 0.2 '-(J)

a.

en (f)

0.1 (f)

o.ooo r, . , ,

₁ •• , • 1 ••••

1 •• , , 1• , , ,

1., , , 1• , , ,

1• , , , 1• , , ,

1• , , ,

1

o.o

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Average fLshLng

mortaLLt~

(ages 2-6

7

u)

c

I-' 0'\

\J1

166

~ l

1400

'1300.

112

00'.

Total catch Div.IVa,b

I

1 - , including juveniles 1

1100. ,, in 'OOO tonnes

I

I

₁

_1a~. - - j

_{/' \}

•' \

I

9oo. \

1

boe; / \ I

~0~

^{,." / \__"}

I

~0!;

; · , /.

·,··~----

.-/ \

I

500. \.--~-- •.. \_

t:f~=--- -\---)I

~o!; ~\ /--- I

100. _./

I

-,

_I

\

_{'-.. _ _/}

/

_,,

. se'. ss'. 601

• 651

. 701

• 751

• so.

1. 40 I --1 1.30 I - , 1. 20

(\

'\ I\

1

1¹

.~

Fishing Hortality

1/ / \ ,/ ¹\

I Total North Sea r

~:~

^{/ V}

'v,r-J \

0.80 I

I -, 1/ \

e.

?e

1--1

j

~~ !~ \

e. se

I - ,

;'~

^{11 \}

0.40 \

6.~ ../?·..._...--~-, ___ j •

.l I

~ ,2].__~~__.--- \/

/'\, _/,//

6.1a ~-/' ~

I ~~---s'o-.---s's''.---6-o''.---6-s''.---7-o''.---7-s''.---aoT'.---

I I ,

3 0 0 0 . \

ll

Spawning stock

Total North Sea

I \

^{in 1}000 tonnes

~ ~

^I

r1· ~~ \f\

¹

1000. \

,//1

l1se ¹ ._ss ¹ ._6o ¹ ._65 ¹ .~~~/

^I

Figure 2.10.1 Catches in Divisions IVa,b, compared with spawning stock and F in total North Sea.

'"

_.. '·.

167

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:,:;

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( sOL) SJaOU!J-l

50

ssop JDaA

170

52 51 50 49 48

~

7 46

45

44 43 42 4 1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25

E3 E4 E5 E6 E7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

o

~

^{~~~I r}

62

~ ^{20( 120 5 8(}

0 ^{~L( -}

·~ -v-x ^-

101

~~6

7295( 3550 2050 335(

;>

~ trq«

^-

CV

490( 1000 1300 260(

~

^-

32' 245( +

-

15 ^I t~" 250

1'1

^!>

?

~

4 ^~

~

~

J/

^-

~ ^/

⁺

^~

~

^-v-~

^J

^~

t)t

/~~ ^j

^{100 ~ -}

~· ~ 0 -

,_51' ~ ^\

¹⁰

~ ~

f.-~ +

~~

- ^~~r ~~ 5

^{+ + 5}

^~~

^-

- ~?(j {) ~

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_~

_-

-\ ~ ~

~

f;:-=-::-:

r~ ~ ) _t/ ^{.-- ~~rp.}

r

(

ul ^s..v _'\5

^{1100 110}

r ^-

r--S i / J

¹¹⁰⁰

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^~

~ ~

⁽

~

Fig,ra 2.11.1 ~

~~it--~../'

I) ~

^{'Q + +}

f

North Saa Harring 1986

-

~~~~

I Catch of herring by

-

M lr.

Denmark, England,

Scotland, Netherlands _-

\ 1-"----...17-""'~~ and Norway (tonnes),

I

^/"'V'-

^l)

^{January -}

~I

Total catch : 28,687 t. -

I I I I I I I I I I I I I

52 51

50 49

48 4 7 46

45

44 43 42 4 1 40 39 38 37 36 35 34 13 32

31 30 29 28 27 26 25

171

E3 E4 E5 E6 E7 E8 E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

o

R

10 120 275 260 ^{~11 I}

62

~ ³⁵⁰ 350 680 5000 1450 180(

o~~~L ^-

·~y~ ^-

30

1~50 ~4950

^{540 230 205(}

~ t:q~

^-

5 21( 7( 100 + 33(

~ ^-

210 5000 620

- 100 ⁽ lP' 470 3150 3250 540 320 160

ri

^I>

-

- ?

-v~ 410 90 + 80 67( 10

z~

__r.-lf

J/

^{r - - -}

~ f ^/

^{170 570 140 10 160}

^~

~ _.

^-v--

^J

^{+ 30}

_r~

j Y}_

•

5

40 340 50 210 ^~

\ _{5 20 150 460 370 300}

0

^-

20

~ ~ 1-·~ >

300

+:~

-.--r-\

^{20 200 11 0 700 340}

= ~~r ~'

^{10 30 180 11 Q ~D}

^~~\

^{. -}

^-

r-

~fv {) ~ ~

^{+ 5 160}

^12~

\ r ^{~ '~} ~

r-

~ y~ ) """ ~~D

/) ./-....

r- (

a-t

^I:..J

~+

^{10 390}

T ^-

r--5 : /

)3

J ^-

).~

$ 3 0 1 150

~ ^-

" _ : ( r

⁵

V=,

^{2.11.2. -}

~ -

l)

~..,....,.-<1¹~ 10 ~ + +' North Sea Herring 1986

cL~~~ I ^}-

Catch of herring by Denmark, ^- England, Scotland, Netherlands

~~~~

and Norway (tonnes). -

February ^-

I

/"'V'-

~

Total catch : 42,378 t

-

~I

^{I I I I I I I I I I} I I I

-

172

E3 E4 E5 E6 E7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

o

52~ 130 1C ~ I I

^I

⁶²

51~~--~-+--+--+--+--+-3-2⁴0--4--4--1(~~---0~~~-~~~JC -

~~;~

^y

;r;

5o 13(

⁺

20(

³

^~

⁵

^n~

³⁴⁰⁰

1 ^o 180 i~

49 ~~~~~~~~-~~~~~~~~~~~A~ ~

59( 50 11

^c

₄

~r

860 25 470

^tl'V~~

r

-

-

48 155[ 30 440 3700 40 170 ~-

/ 7 (

1:1. )(

~: r-~-+-f--+-~-:-:,+?----=~~H~~·..-()_1_9-+.,+_-:_:--+:+_-3_:-,:~:+,~:_:-:~:::-1~0-0:-_1_8:0:~::~:::rr::.._-~~~,. ~/t_ ^ss·

~~ ~~ ~

^{/ + + 5 10}

ru

~~ 2~1

IZ.-..-=::-ft

1F.)'~ .t:?'fj:.__\-+--t--t---+---+---+--+-40 ~----2-::-~---1 :-~---Hr ^56.

-- ·~W1~ :: 1:: ::: .: ~~~ ~

3 8 = ~~r ~'~-+---+---1--t---+5 ---18[!---1 0+-~i<>-.,\\ ~

37 ~J<J () ~ \

^{+ + +} 2[

40 ·~ - ⁵⁴⁰

~:: \ yJ ~) :: -"~~~~

34

r- (

u-t ^~ "\ T -

3 3 r...s / )+1-+- ---+--+--11 -

i~ $460 ~ - ~L

31 _{-~101 /~}

_-

~ /'"F-r-~ Figure 2.11. 3 _

30 1---+---rl) ~~

¹

._+ ~-' +I+('

North Sea Herring

1986

2 9 c:!J..

11

I }

^{Catch c} f herring by -

t-..._,...

I

~v ~enmark, England, Scotland,.

50°

28

D- t ~~ Netherlands and Norway,

1---t--+---+-+--+<1 \

),~ [;:o'~>' (tonnes). -

2 7 i l

^March -

2 6

1---+--l-{,....,.-v'V'- "-..) Total catch:

24,068

^{t. _}

25 ~~--~~~~~~~--~~--~~-~l~l--~1--~l--~l--~l-~1--~l--~fL_~I~~48o

6° 4 ° t 0° t J/ 6 ° Ao 10°

-

32

52 51 50

49 48

. 7

46

45

44 43 42 4 1 40 39 38 37 36 35 34

)

32 31 30 29 28 27 26 25

173 E3 E4 E5 E6 E7 E8 E9 FO Fl F2 F3 F4 F5 F6 F7 F8 F9

a

~

~''

^I

62

'() ⁷⁰

oe~U ^- '{~V~ ^-

~

,{J

a:?

^{+ +}

i' t'~tf ^- _-

~ ^-

c

,,.

~ ^tl

-

.,...

?

~$

z~

~

J/

^-

~ f ^/

⁹⁰

^-~

⁺

~ ^J

^{) + 10 +}

_/~

~/~ j

⁺

tt}_

j~

^{\ + + 30 5 5 10 + +}

^~ _{~ ~ ~~-} ^-

~ ~~r _~~

^{5 1 0}

i\ -

~ -~)Y {) ~ \

⁺

^~

^-

r-\ ^{- ~ 9-~} ~ ~ _{)_}

_/) ^&:?'

~~rr ^-

- ( l'l}

^"J _"'\+

/ ^-

r /

)+ J ^-

i~ $+ ~ ^-

~ /~~ Fi!ijure 2.11.4

v ~rr~-c_~~.-rrr

North Sea Herrl11g 1966

st

~~71 I j

Catch of herring by Denmark ^-

M C

England, Scotland, -

Netherl•'t11ds and Norway

\ 1-"--v.

,r ... ./11 ( tonm1s), -

April _-

I ^{/ ' - ~}

Total catch: 257 t

E_t

^{.i I} I I I I I I I I I I I -

174

I I I

t

I

t

I I

~0

- -

-

Figure 2.11.5 North Sea Herring - Catch of herring by _

50°

Denmark, England, Scotland, Netherlands and Norway (tonnes)

- May

Total catch: 34,638

t

I I I I I

4 8°

6° Ro 10°

52

51

50 49 48 4 7 46

45 44 43 42 4 1 40 39 38 37 36 35 34 13 32 31 30 29 28 27 26 25

175

E3 E4 E5 E6 E7 E8 E9 FO Fl F2 F3 F4 F5 F6 F7 F8 F9

o

~

^{~11 T}

62

~ ^{30 24 71C}

off:~ ~L

^-

·~y~ ^-

9C

~4ff

^{1 ::.710 215C <}

~

^1'

~~qp- ^-

77C ftl4900 1400

~

^-

67C 90 180C 20C

-

ri

^{lP' 290 + 52( 110(}

I>

ff ?

-

"V

240(

z~

j ~ ^{275( +}

~ _1/

t ^/

^{310 70} 535 725( 15( 30

^{28~~ -}

9550 84 143C 1050 6400 ~200 200(

~

"V"

~

J

¹⁵⁰⁰ 36C 1150 1450 ;:>050 1<0(200(

~

'3; j

3( 5c^1"

;!/ + 1500 5

; -

~

^{+ + + + 30 6C 4C}

^~

^_

~. _- ^"\

^{+ 210}

.

⁵ _{1< 12C _,}

_~

~+

^6C

^:9}

_.----;

12( ^t:; 5C

-

~~r _~---

⁺ + ¹⁰ ₊ 1

oc

10 ^{10 +} + 2( ~.\ ~-:

-

- ~IJ

() ~ \1_

^{20 11C 2C 40 < ~ -}

- -""'-

_\ ~ ^~ .

⁺

_·~~

~ ^y~ )

+ + +

t/

^.::?'

^~D

^{/--... :2}

~ ( cr-t

^~

₁ -r

^-

r--5 / ^j I

^-

-

~~ $ ~

'-' -~ l-/~

^-

,...

v ~~~L-~~:-r

Figure 2.11.6 -

1986 -

cL~Il r j,

North Sea Herring

v~lb:v

Catch of herring by

-

Denmark,England, Scotland, Netherlands and Norway (tonnes).

I

^{~ ....}

^~

^{June -}

_-

~I

Total catch: 72,186 t

I I I I I I I I I I I I

'

176

E3 E4 E5 E6 E7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

o

52 62

51 50 49 48

~

^{~11 l}

4 7 46 45 44

43 42 4 1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25

I'Q ²⁰

off~~L

_{~,., -.y}

_)I; ^-

-

220(

;}4fl ~900

^{100 28(}

·~~ _-

I~ ~ ^~rv~

230 125( 6570 10 3(

~y? -

20 11

oc

10C 34( 5850 170 24C 50 30

~ ^-

(

'""'

^{478C 35( 4o}

400 ~ ^{tl 1250 100}

?

"\)I

330C 1100 30 74C 110

{~

~

_1/

~ r ^/

^{3450 2200 20 +} 34( 320 110

^{40·~ -}

1100 + 40 470 90 140

~ . ^!

^{) + 1200 + 20( 90 90 f-710 370} 1 3 5 C i i

j

_145C

-rtt _

~ft~i

^{27C 340 10 h40} _~50 ⁶⁷⁰ _{280 65C ~}

• ~ + + + 140 +

18C () -

~~-~ ^\

⁺ _{+ + + 5} ^I' ₅ ⁺ ₅ ^{10 60} ₉₀

_{15C~~ ~}

~ ~~rr ~~

5 + 20 5 5 10 4C 1~

'\\

^-_

~ ~?(j () ~ '\;

^{30 60} 2C 30 10 + +

+~

~\ r _~

?'

5 50 70 + 40 10 f~

~ ~ y~

)10

~

~~rv

30 30 110tl

~ ( tJ-t

^~

."\ +r

^-

r._s / _J

⁴⁰

I ^- _-

~~ :« 7; ^{V 10~}

Figure 2. 11.7

-

l)

_<~ ~ I~ - ._,./'"

y-~ Z) ' North Sea Herring 1986_

c0,

¹¹

A

Catch of herring by

~ lr

Denmark, England,

-

Scotland, Netherlands

i\

^1~1;=\- and Norway (tonnes). -

I

^/"'V'-

~

^{July -}

~I

Total catch: 53,824 t -

I I I I I I I I I I I I I

177

F2 F3 F4 F5 F6 F7 FB F9

o

52~

^{130 10}

~

^{I I I}

⁶²

51~~-+-4--~+-+-4-~~-+~--~0~~~~~~£ -

5o "'n~

^{60 5}

~~ ^-..-)!;

49 ~',i1~~400 ![c{tf

4 8

86C 2200 7301700 440 5

~L

1!

7 ~-+--+-~~~~~r--r--r--+--+-~--~--~~~~t~-

²⁰⁰⁽

28~ ~~007800

^{520 10 70}

~ ~ 46 ~~H-1_0~0_1_1~0r1_4_o~2_1_or--+--~-4--~~

~~ ~r ~,

30 360 7:0 1

: 0

5 10 5

: :

~ _/~ ⁵⁸ '

4 3 ~

)_:5502550 70 + 10 640 3< 7<

_D

~ tttr

4 2 ..)

+ + + 15900' 5 + 1 3 I 9 (

.,.~ -:!~ .} - ' -

~ ~ iP[f?~t ~'"""";=-+---:-+--+-+---15

^{1-o_oo-+- 8 2 5o 1 o 3 o 2 1< 1 5}

^c ~ ^_ 5 6

^o

39 k"' ^{L5 ~I/}

^{+ + : : +}

5 1: :: :: '",~ ~

38 ~ ~N"-17 ':.:':~890

^{130 + 5 20 170 "}

'i ~

3 36

7 : ~ ;v () ~- j~6oo

^{80 • 10 5< "}

-~ ~ ₅₄ ^,

35 ~ ~ -z:;~ . '""")--+--7_5_0r--++-~-:+_..--::;--..10..t-.__-.:;·~~-~~

3 4

f- (

u-t ^~ "\ r -

33 r--5 -,;; _.) ' 7 - _st

1~ d ~ -

31 ~ ~+L/'

30

1---+---+l)--f'"'' ~-. ~

F!-T

Figure 2, 11.8

~~-o,...

""' I (·

E3 E4 E5 E6 E7 EB E9 ^{FO Fl}

-

-

-

-

32

29

^c!:~~~

I --;

North Sea Herring 1986

28

^I~ Catch of herring by

500

t---+---+----+--+-~M.

Jf .

Denmark, England, _

2 7 1\

1~~ Scotland, Netherlands

~

^L) and Norway (tonnes). _

26

t - - - - + - - H

I

^J ~ ^~~ August

2 5 '----'-::--_L-"--~--'-':----'l---'l

^_

_~l

^{_ _ lt___L_I _}

_~__

^{, _ __L_} l__L!_T_o t-L.

f_l_C_j~_t_c

^{h_:L_1 6 9__:'.L 11_7 5_.L ,t_. _ j}

_{4 8}

^o

5° 4 ° t 0° t 4 ° 6 ° R

⁰

10°

-

52 51 50 49 48 4 7 46

45 44 43 42 4 1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25

178

E3 E4 E5 E6 E7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

o

~ ^{~-,, I}

62

~

F~LL

_o~

v;r;

^-

-

fiB

^{~ 1< 7C}

'{M

+ f> + 2 ₊

~ trc{tr

^-

10(

tV

^{460 6 2(} +

~ ^-

150( 5 100 120 1250 35

- 56C

19~

^lfOO 90 290 280( 22( 50 20

- _- ?

~ 4< 230( ·~

~LJJ?'

170 1150 400 50

_J/

30~

^{t - --}

~[ fiop

⁺ 6< 155C 1850 5850 490

1< + 390 1800 5800 280 2(

~

- v - ⁾

3C

~If

~ j

^{+ 80 5 20}

./· '/ j

10 ^~ 170 610 t3350 50 1C

ti}_

# ^{\ ~0}

^{180 80 8( + 180 460 + 10 180 1400 40 80 60 50 90 90 6C 1C 1C 80 20}

^{~:~ ~}

^!>,

^{~ -}

~ ~~rr l;__;oo

^~ _I ^{20 40 70 ~}

,.:.

^{~.\ .}

r- ^~?<J () ~ 1~

^{114 ~ 10}

-~ ~

r-\ ~ ~

¹

^ooc

^{400( 2000 80}

IF"~

r- ~ y~

_{)53( 16.5C}

"" ^{._;~b- ~}

/} /--...

r- (

u-t ^£..J '1(

¹⁰

T ^-

r-

1/ _J~ I ^-

~~ d+ ~

^-

-~+ ~

^-

~

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Figure 2. 11.9 -

l)

~,--.r<:J ..., + •

c0,

^"i1

I ~

North Sea Herring 1986

Catch of herring by

~~~~

Denmark, England, Scotland, Netherlands

-

and Norway (tonnes).

I ,.-rr~' ~

^September

^-

~I

Total catch: 49,820 t. -

I I I I I I I I I I I I I

179

E3 E4 ES E6 E7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 FB F9

^o

52~

210

~

^{I I I}

62

51

~~--+--4--~2-1-0+--4-1-90~--+--4--~--+--4---~~~~~~~~~ _-

52 oc-t--b

--t---+---t--1---+--;-G...~~'-'

y

~

5o

40 730

.11n"

90 3[ 10₁ 360

~~ dl-

4 9

40 10 40

~

^{+ 440 30; 220}

t)q~ f

48

440 60 7901 5 5! 270 20

~L

4 7 ~·r: !

45504650 140 140 5

~

-

-

-

~~~~~--+-~--89_Jo~16_s_o+-3-1~o~1-o~23_o4-~·~

~

5 720 1350 100 800 40

~

320 350 't300 '1300

; + + . 280 130 31[ +

D

\~· 1: 30 1: 2:: ::: ::: :: 1:: 1l ^~

32

\

\-+----t---+---+--+--+----~1---l---.J

10 5 40 1 0 3[ 20

2 r:, 54 °

~',-)-+---+--' 0+---+-+-/)+c?'-=1~0 -+--~-~-fil· ;=~

~~~,=a~+-+-r~

-

Jfirt----f--f---1/ -

$ 2 0 2000

~ -st

~5 ~

31

~

,--' l_..-./

Figure 2,11.10

3 0

1---l----+---r-' _~ ) ' •

~ <~~ ~

^-

~I(

r I ~

I

~ North Sea Herring _

29 ~~~~ T J

Catch of herring by _

SQo

2 8 __,--v

Denmark, England,

M_y\

\.C b'!l

Scotland, Netherlands and _

27

u -...r- :lorway (tonnes),

2 6

~--+----\-~--~/-.._+--4~--1 _{De to ber -}

f---+----if-f Total catch: 46,546 t. -

25 ~-~-~~~~~~~-~~--~~--L-J~t-~J~-L-I~I--~I--L-I-JI

_ _

IL__L_I_J48°

6° 4° t 0° t ^4° 6° R

⁰

10°

- -

180

E3 E4 E5 E6 E 7 EB E9 FO Fl F2 F3 F4 F5 F6 F7 F8 F9

o

52~

⁷⁰⁰

~

^{I I I}

62

51~~--+--4--~-70-0~-+-6-20+-~~2-2-0~-+--1(4--4---0~~~~~~~~

-

50 .;;:

y

11;

24C1jfl~940

⁵ 10 38( 5 \BJ'tl

-

4 9

17( 50

1~ ~

^{11 0 920 130 5(}

(~~ ^-

~~

^:::

~·~

: : : ::: 10 5 ::

~

46 L 4Q~

^{m 20 •}

·r:r ^_?-

~~ ~r~ /H---t-) --+--l---3:-+--.,+-+--1--1--~ao ~ J/f-- ^58'

~~ ~w ~

1 ;

⁶⁰ . , , , 160 10 10

~

~3 9~ :Jt

'"=-,+---+--4---1f-18-:-:+-2: : : : : : 2, 20 20

r ^{~ 56.}

L: 1 \ + 3400 1450 360

2

: 4: 70 : :

-·~~ ~

3 B - ~ ~N"-rr ~"' ,, "'

^{150 , , 10 60}

^{~\ ~}

3 7 ~ ~ ^?<J !) ~

\{-1--_5 +-1-3

0-1---!---+---.j~-+---+---+--~-..J

^-

⁵⁴

⁰

~:: \ yJ ~) ~ ~0 ~:;~~

34 ~ ( u-t ^~ '\a T -

3 3 r--5 l / J+~ -l---+--J; -

"I~

^{$ 3 D}

5100~

^-

^Oc

31 _ -{r'V

^{figore 2.11.11}

30 I

J ._.,_..~~,__....--....___,_.--5

,

1----+----rV ~J----."1---'--1< f--'<:J-4---1f---+--l N a r th se a Herring _

29 c;(J,

⁷¹

I

3250 }- Catch of herring by

50

^o

2 8

~ ^I _,r-¹⁷ Denmark, England, Sea tland;

1---t---+---+-+---K)- L ¹! Netherlands and Norway _

27 1\

),..______.:/'0¹¹ (tonnes).

-

32

2 6 1,_... .. _,-l.r-'"'- ~

f---+--H~ Total catch: 32,233 t

25 ~~--~~?~~~-~~-~~-~~~~--~1---~·~·--~·--~·---L-'-LI __ JI __ ~I--~ 480

6° 4 ° t 0° t f/ 6 ° A

⁰

10°

November -

-