IIJ
ICES CM 19981D:I0
Resource Management Committee
Ref.G
REPORT OF THE
INTERNATIONAL BOTTOM TRAWL SURVEY IN THE
NORTH SEA, SKAGERRAK AND KATTEGAT
IN 1993: QUARTER 2, 3 AND 4
by
The International Bottom Trawl Survey Working Group
This report is not to be quoted without prior consultation with the
General Secretary. The document is areport of an expert group
under the auspices of the International Council für the Exploration of
the Sea and does not necessarily represent the views of the Council.
International Council for the Exploration of the Sea
Conseil International pour I' Exploration de la Mer
Palregade 2-4 DK-1261 Copenhagen K Denmark
TABLE OF CONTENTS
Section
Page
1 INTRODUCTION ••..••.••••••.•.•.•..••••••.••.......••••.•.•.•••.•••...•.•.•••••••..•.•...•...•.••.•.•..........•.•.•.•.•.•...••.•••••••.••••••••••••.•••...• 2
2 SURVEY METHODS AND PARTICIPATION
2
3 STANDARD OUTPUT FROM THE ICES IBTS DATA BASE .•.•.....•..•...•........•.•.....•.•.•.•.•.•.•.•••.•.•.•.•.•.•.•...• 2
•
4 RESULTS FOR 1993
3
5 HYDROGRAPHIC DATA
5.1 HYDRO-CHEMISTRY SURVEY
4
4
6 REFERENCES
4
Tables 2.1-4.2
5
Figures 3.1-5.6
8
O:\Scicom\Rmc\Ibtswg\Reports\1993_234\Report.Doc
1
INTRODUCTION
This report presents the final results for the International Bottom Trawl Survey (IBTS) in the seeond, third and
fourth quarter of 1993. The survey was formerly ea11ed the International Young Fish Survey (lYFS). In 1990 it
was decided to eombine the effort of the International Young Fish Survey with a number of national surveys such
as the English and Seottish Groundfish Surveys into a quarterly coordinated bottom trawl survey, to be held for a
period of 5 years. These quarterly surveys started in 1991. This report presents the results of the quarterly surveys
in 1993. The results for the first quarter IBTS are also given in separate reports, but first quarter indices are given
in this report as weil to give a better overview of the changes within a whole year.
The data in this report comprise the bottom trawl catches of the 8 standard species (herring Clupea Izarengus,
sprat Sprattus sprattus, mackerel Scomber scombrus, eod Gadus morhua, haddock Melanogrammus aeglefinus,
whiting Merlangius merlangus, saithe Pollachius virens and Norway pout Trisopterus esmarki). Also
summarised results of temperature and salinity sampling are presented.
2
SURVEY METIIODS AND PA RTICI PATION
For a11 matters on survey methodology, the reader is referred to the IBTS Manual (ICES, 1996b). Details on the
participation in the 1993 surveys are given in Table 2.1
3
STANDARD OUTPUT FROM TIIE ICES IßTS DATA BASE
•
For details on the standard analysis of the data the reader is referred to a description by Pedersen (1989). At
request, copies of this paper are available at the ICES Seeretariat.
In 1994 the Herring Assessment Working Group for the Area South of 62°N has adopted a new index for Iringer abundancc of North Sea autumn spawners. The new index is based on daytime catches in all statistical
rectangles sampled during the quarter 1 survey, both in the North Sea and in the SkagerrakIKattegat. In the
calculation of this index, catches made in rectangles sha110wer than 10 m, or deeper than 200 m (250 m in
Skagerrak), have been given less weight. The weighting factors are given in Figure 3.1.
It is implicitly assumed that a11 I-ringer herring in the North Sea, Skagerrak, and Kattegat are autumn spa"\'ners.
Unsampled rectangles are a110cated the mean catch rate estimated within "roundfish arcas" and the index is
expressed as the mean catch rate (number per hour) for the entire survey area. The indices for 2+-ringers have
been revised in the same way, with the exception that the catches in Skagerrak and Kattegat are assumed to be O.
This implicitly assumed that a11 2+-ringers in Skagerrak and Kattegat are local oe Baltic spring spawners. The use
of "zero" catches instcad of "missing" catches of 2+-ringers in this area is eonvenient because it brings the
indices of a11 age groups on a similar scale so that for instanee mortalities can be calculated directly from the
indices.
The above mentioned rules for separation of autumn and spring spawners were intended foe the first quarter IBTS
data. In this report similar rules have been adopted as we11 for the second, third and fourth quarter data. The
indices for O-ringers in third and fourth quarter are calculated in a similar way as for the I-ringers.
The IBTS Working Group dccidcd at the meeting in November 1995 (ICES 1996a) that saithc should be added
to thc list of standard spccies. The indices of saithe for each age group are calculated in a similar way as for 1ringer herring (see above) with the exception that also night-time hauls are used for saithe.
Thc Herring Assessment Working Group has also foe sprat adopted a new index series (ICES 1993) in which
only hauls betwcen 10 and 150 m depth are inc1uded. The standard area has remained thc same: Division IVb
only.
For the index of the remaining spceies (eod, haddock, whiting, Norway pout and mackereI), the catch at age per
hour is avcragcd for all hauls within a rectangle, and the survey index is calculated by taking the average of a11
rectangles within a species-specific standard area. Rectangles wherc no haul was made, are cxcludcd from thc
calculation.
O:\Scicom\Rmc\lbtswg\Reports\1993_234\Report.Doc
2
•
. ,..1:
,'i."
"', i
The standard gear far IBIS is the GOY trawl, but in the third quarter of 1993 an Aberdeen 40 ft trawl has been
used by "Scotia". See Knijn er ai. (1993) for specifications of the Aberdeen 40 ft trawl. In the calculation of
indices it is assumed that all trawl types have the same size and fishing power.
4
RESULTS FOR 1993
In the analysis only day-light hauls are used for herring, whereas for the other species all valid hauls are used.
The number of hauls used for herring and for the other species is shown in Figures 4.1 and 4.2.
The number of otoliths sampled per target species, per roundfish area and quarter is given in Table 4.1.
Per species a set of figures gives the distributions of the 0-, 1-, 2-, and 3+ group and the mean length of I-group
fish per rectangle. In the analysis a specific standard area for each species is used to calculate the index of year
cIass strength. This area is indicated in the figures. The distributions are given with dots of expanding size.
Within one page, showing 2 or 4 quarterly distributions, the same scaling has been used. The catch in number per
hour of the biggest dot is indicated. The surface area of each dot is relative to the average number per hour
caught.
The mean age composition of the eight standard species within the relevant standard areas is given in Table 4.2.
Herring
Mean numbers of 0-, 1-, 2- and 3+ ringed herring are given per rectangle in Figures 4.3-4.6. Mean length per
reetangle of I-ringed herring are given in Figure 4.7. It should be noted that the term "age group" in herring
refcrs to number of winter rings and not to years. All juvenile herring in the North Sea are assumed to be autumn
spawners, and this means that for instance age group I herring in February 1993 represent year dass 1991.
Sprat
The distributions of 0-, 1-,2- and 3+ groups, and the mean length of I-group fish are given in Figures 4.8-4.12.
Mackerel
The distributions of 0-, 1-,2- and 3+ groups, and the mean length of l-group fish are given in Figures 4.13-4.17.
•
Cod
The distributions of 0-, 1-,2-, and 3+ group, and the mean length of I-group fish are given in Figures 4.18-4.22.
Haddock
The distributions of 0-, 1-,2-, and 3+ group, and the mean length of l-group fish are given in Figures 4.23-4.27.
Whiting
The distributions of 0-, 1-,2-, and 3+ group, and the mean length of l-group fish are given in Figures 4.28-4.32.
O:\Scicom\Rmc\lbtswg\Reports\1993_234\Report.Doc
3
Saithe
The distributions of 2-, and 3+ group, and the mean length of 2-group fish are given in Figures 4.33-4.35.
Norway pout
The distributions of 0-, 1-,2-, and 3+ group, and the mean length of l-group fish are given in Figures 4.36-4.40.
5
HYDROGRAPHIC DATA
5.1 Hydro.Chemistry Survey
Details concerning the data collected during the three surveys are as folIows:
Quarter 2: 183 stations from 26 April to 19 June from four ships ("Walter Herwig", "Isis", "Tridens" and "Argos")
Quarter 3: 313 stations from 9 August to 23 September from five ships ("Thalassa", "Isis", "Tridens", "Cirolana",
and "Argos")
Quarter 4: 349 stations from 16 Getober to 20 November from five ships ("Dana", "G.O. Sars", "Isis", 'Tridens",
and "Cirolana")
Charts showing the distribution of boltom «20m of bottom) temperature and salinity for each of the surveys are
shown in Figures 5.1 to 5.6.
Digital (gif) copies of these charts may be retrieved or viewed from ftp:/Iftp.ices.dkldistloceanliyfs/1993. The ftp
directory also includes charts showing the location of the stations.
6
REFERENCES
Knijn J.R, Boon, T.W, Heessen, HJ.L and Hislop, J.R.G. 1993. Atlas of North Sea Fishes. ICES Cooperative
Research Report. No. 194, 268 pp.
ICES 1993. Report of the Herring Assessment Working Group for the Area South of 62°N. ICES Doc. CM
1993/Assess:15.
ICES 1996a. Report ofthe International Bottom Trawl Survey Working Group. ICES Doc. CM 19961H:1.
ICES 1996b. Manual for the International Bottom Trawl Surveys. Rev. V. Addendum to ICES CM 19961H: I.
Pedersen, L. 1989. International Young Fish Survey, computation of aggregated standard tables and charts. ICES
Secretariat, section computer management.
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4
•
Table 2.1 Participation and number of hauls in the IBTS for 1993.
Year
Country
Vessel
Period
ABD
1993
Quarter I
•
Quarter 2
Quarter 3
Quarter 4
e
Number of Hauls
GOV
Sweden
Argos
812-2512
46
Denmark
Dana
5/2-1812
43
Netherlands
Isis
1612-2512
26
Norway
Michael Sars
5/2-1/3
49
UK Scotland
Scotia
4/2-24/2
52
France
Thalassa
1711-3/2
51
Netherlands
Tridens
2/2-2512
48
Germany
Walter Herwig
2311-1112
65
Sweden
Argos
26/4-12/5
48
Netherlands
Isis
10/5-18/5
24
Norway
Michael Sars
24/5-116
32
UK Scotland
Scotia
29/4-17/5
74
Netherlands
Tridens
3/5-18/5
44
Germany
Walter Herwig
19/5-19/6
12
Sweden
Argos
6/9-23/9
50
UKEngland
Cirolana
9/8-4/9
77
Netherlands
Isis
16/8-19/8
17
UK Scotland
Scotia
6/8-25/8
France
Thalassa
13/9-30/9
69
89
Netherlands
Tridens
16/8-3/9
48
UKEngland
Cirolana
19110-13/11
73
Denmark
Dana
4111-20/11
47
Norway
G.O. Sars
17110-10111
79
Netherlands
Isis
25110-10111
48
Netherlands
Tridens
18110-28110
32
Gear used:
ABD
Aberdeen 48 ft trawl
GOV
Grand Overture Verticale trawl
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5
Table 4.1
Number of otoliths sampled per species, roundfish area and quarter in 1993
Roundfish area
Species
Quarter 1
Herring
Sprat
Mackerel
Cod
Haddock
Whiting
Saithe
Norway pout
1
2
3
4
5
6
7
8
9
Total
585
882
85
666
135
227
158
212
113
955
471
755
320
446
21
636
159
470
720
634
3
181
286
852
713
5
155
310
481
629
39
334
12
1,371
248
264
175
278
141
208
439
75
204
5,364
1,462
113
3,452
3,835
5,512
593
811
385
168
49
199
575
491
52
100
361
187
82
320
354
369
375
162
119
15
3
167
427
230
218
152
192
100
426
138
672
171
5
649
204
183
21
77
406
55
177
142
178
303
210
56
11
26
148
96
57
210
24
97
175
168
175
15
22
343
33
589
160
277
168
148
215
35
153
110
73
408
102
22
177
174
125
43
30
363
157
142
4,016
52
13
127
2
1,771
3,009
3,836
727
869
113
1,048
1,290
1,017
585
282
193
Quarter 2
Herring
Sprat
Mackerel
Cod
Haddock
Whiting
Saithe
Norway pout
27
607
587
453
298
185
301
89
17
382
659
469
12
140
Quarter 3
Herring
Sprat
Mackerel
Cod
Haddock
Whiting
Saithe
Norway pout
541
17
221
737
1,929
1,283
788
420
626
157
300
469
1,082
805
59
137
659
147
163
126
994
752
31
141
622
179
88
632
503
333
2
94
837
905
292
122
277
673
576
14
190
287
132
128
48
626
521
5
82
352
360
27
100
234
369
Quarter 4
Herring
Sprat
Mackerel
Cod
Haddock
Whiting
Saithe
Norway pout
333
214
597
1,134
876
647
430
O:\Scicom\Rmc\lbtswg\Reports\1993_234\Tab41.Doc
561
88
6
114
236
191
13
36
3
193
II
430
172
237
233
389
13
288
471
317
304
364
8
923
120
144
126
16
49
40
3,472
1,245
512
2,9.
2,751
2,949
439
701
3,788
1,102
1,198
3,077
4,892
4,051
895
997
l,~_
Table 4.2
Age composition of standard species in 1993 for the relevant standard areas.
Age
Quarter
0
1
2
3
4
5
6+
Herring
1
2
3
4
.0
.0
3,799.2
3,488.5
2,954.0
2,126.7
1,136.9
293.8
779.3
618.4
324.8
63.0
209.1
415.5
175.2
23.3
43.6
62.1
92.0
10.5
63.8
63.7
195.8
22.3
Sprat
1
2
3
4
.0
.0
6.8
2,528.0
1,688.6
7,815.4
2,575.1
9,476.2
589.8
5,196.1
2,728.4
2,918.0
83.8
504.6
559.3
81.3
4.2
19.5
23.5
.3
.1
.9
.0
1.1
Mackerel
1
2
3
4
.0
.0
5.3
11.9
1.0
3.8
91.3
8.5
.8
22.9
67.6
10.2
.9
6.8
25.7
6.1
.4
2.5
18.9
6.3
.2
1.5
10.1
3.3
.3
3.1
18.1
7.6
eod
1
2
3
4
.0
2.1
17.0
25.4
13.1
8.4
10.0
9.1
19.5
13.6
8.0
5.6
2.0
1.9
.9
.8
.7
.5
.2
.3
.6
.3
.1
.1
.4
.2
.1
.1
Haddock
1
2
3
4
.0
.1
571.9
667.0
1,254.3
1,121.3
604.3
906.1
540.8
317.2
141.5
201.3
154.5
97.7
37.7
45.3
8.9
20.2
2.4
2.7
1.1
.9
.4
.5
1.0
.9
.3
.4
Whiting
1
2
3
4
.0
7.2
915.9
1,014.1
1,087.6
742.5
634.2
755.5
523.7
244.2
176.9
324.1
244.5
147.0
67.1
110.3
65.5
35.1
14.8
42.0
59.0
21.4
16.2
14.2
11.4
6.7
3.1
7.6
Saithe
1
2
3
4
.0
.0
.0
.0
.1
.1
.9
.2
2.0
1.3
1.8
1.6
.5
1.2
8.5
7.3
1.3
1.5
2.9
1.9
2.5
1.8
1.2
.6
1.8
.8
.4
.4
Norway pout
1
2
3
4
.0
.0
4,103.9
4,775.1
2,681.4
2,075.2
1,831.5
1,767.0
2,644.1
1,252.5
608.5
579.9
258.5
193.8
52.6
47.5
6.0
.2
3.3
2.7
7.0
.0
.0
.0
.1
.0
.0
.0
•
O:\Scicom\Rmc\lbtswg\Reports\l993_234\Tab4-2.Doc
. 7
Figure 3.1 Weighting factors used in the calculation of the indices for herring and saithe. Numbers denote the relative
weight of a given rectangle. Only weighting factors less than I are shown, other rectangles are given a weight of I.
8
Number of daytime hauls. 1993 quarter 1
Eft
E7
Eft
Eo
Fo
FI
f2
F3
F4
F.
Fft
F7
F8
Fo
GO
Gl
Number of daytime hauls. 1993 quarter 2
G2
Ea
E7
Ea
Eo
Fo
FI
F2
F3
F4
n
Fft
F7
Fa
Fo
Co
GI
G2
.2
'2
.1
4ft
•
-4
-3
-2
-I
0
11
K)
12
n
-4
E7
Ea
Eo
FO
FI
F2
F3
F4
n
Fo
F7
F8
Fo
Co
-2
-I
KJ
0
12
JJ
13
Number of daytime hauls. 1993 quarter 4
Number of daytime hauls. 1993 quarter 3
Eft
-3
GIG 2
Eft
E7
Ea
Eo
Fo
Ft
f2
F3
F4
F.
Fa
F7
F8
Fo
GO
GI
G2
N
o
.0
40
•
: 34
;;;4--+----.,r----t---t--t---+--+-t---+--+-+--+--+-+--+---t-+'
-4
-3
-2
-I
0
.:J
11
12
11
-4
Figure 4.1 Number of valid daytime hauls.
9
-3
-2
-]
0
'KJ
11
12
13
Number of hauls. 1993 quarter 2
Number of hauls. 1993 quarter 1
EG
E7
EG
Eo
FD
FI
F2
F'3
F4
F5
Fa
F1
Fa
Fo
GD
GI
ES
G2
E7
ES
Eo
FD
FI
F2
F3
F.
F5
Fa
F1
Fs
Fo
GO
GI
G2
52
-4
-3
-2
-1
Xl
0
11
12
-4
IJ
Number of hauls. 1993 quarter 3
Ea
E7
ES
Eo
FD
FI
F2
F'3
F.
F5
Fa
F7
Fa
Fo
-3
-2
-1
m
0
11
12
tJ
Number of hauls. 1993 quarter 4
GD
GI
G2
Ea
E7
Ea
Eo
Fa
rt
F2
F3
F4
F5
Fa
F7
Fa
Fo
Go
GI
G2
52
51
3.
:;4---i---:-i-+-+-i--+--i--+---+------;--+--+--.---+---t--t--tJ
-4
-3
-2
Figure 4.2
-1
0
XI
1l
12
13
-4
Number of valid day- and nighltime hauls.
10
-3
-2
-1
0
10
11
12
13
Herring, Age group 0 1993 quarter 3
Herring, Age group 0 1993 quarter 4
Max mean catch number per recangle:
Max mean catch number per recangle:
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0
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IOU1213
Herring: number per hour, O-ringers.
11
-1
0
9
ID
U
12
13
Herring, Age group 1 1993 quarter 1
Herring, Age group 1 1993 quarter 2
Max rnoan catch nurnber per rocangle:
Max rnean catch nurnber per recangle:
E6
...
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E7
,
E6
I
Eil
.
•
Fo
•
F1
•
FZ
•
F3
F4
F,
F6
F7
F6
347099
F9
GO
Gi
31052
G2
,'
•
_·_--t---~··!---·-f··-·-T--·--r---·I·-----1--··-·
Ci ·-·-·-l-----i-·-·--r··~--t····-l---·--t·----·!-·-··
'"on
...on
;:;4--+-+--+--t---t--i--i---+--i--+--i-.....;......:.:..;~+-:.:::;:=.;=.::;:J
;:;4--+--i--+--t---t--i--+--+-+--+--+---t--i--+--+-+-.......
-4 -3 -2 -1
g
6
0
Xl
U
12
-4 -3 -2 -1
13
0
D
6
11
12
Herring, Age group 1 1993 quarter 3
Herring, Age group 1 1993 quarter 4
Max rnean catch nurnber per recangle:
Max rnean catch nurnber per rocangle:
110522
...
...
"
,
,
•
I
,
I
"
'2
,
-·----r-----I-----r-----r--··-r-----r-----I---···
'1
;; ·····-t------:---··t··n-t-----:-----t------t-----·
,
I
I
,
I
,
I
0
11234
I
····--r-----r-···-T-----r----l------I------!-----
··_·_-1-----i-----t-----r-·-·-1--··-t····_;---··
c;
·:::::l~::::I:~l:::::l:::::r:::!::::::!:::::·
~ ·::4::::t::~:::r::::1::::::1::::::!::;::;:::::
:.. . :-"+"'
:... : . :,
..:.;+"'+"'+"'+-"-+-"'
g
:
,
:
_._._~._--_
----_.~.
",,---.--:~:
:
:
__ ._~-_ .... ~_ ... _-~
_--~
.. -... -._.~
:.: : : :.:.:
r··-·-r,···--·~ ---+, -.u·i.'··-···~,:-_·~-·!.' ----·-t,·--··+,-.....:.~._ .. :,
:
: : ! : : 44
:, ...-.. ~_._. ~- -.--.~.
: : .__.L._..
~~ ....
i·---·-~-·· ~··--i-····i"--··-~--··_·!·--·--i-·--·-r·····-~·--·-~-·-·--i--·-··~··
..
,143
:
:
:
:.:.:
:
:
:.:.:
:.
r _.•••
::
: • :
1'·'---'-····t···--r··:·-i··-:--i·-.···t·-··_·f··--··[·--···[-·:·-i··--·-i-·-··-~ .
~
;:;4--+--i--+--t---t--1--+--+--t--+--i--i---i--+--+--t--tJ
Figure 4.4
4
6
6
9
D
11
U
. -·~··--·t·--·-i···---l-·:·-\·-·. -·l···-·-[_·-··t···_-1······1···:-·~ ....( ....}
'~
'
: 42
:~[ljEJT[1]I~~r~~
: 33
0
.
r·:··i~~··
:!Jil~]~t±t]Ir~~t:::~I!j~
3'
-4 -3 -2 -1
t·
•••• '.
-4 -3 -2 -1
0
Herring: number per haur, I-ringers.
12
0
6
8
9
D
11
12
0
Herring, Age group 2 1993 quarter 1
Herring, Age group 2 1993 quarter 2
Max mean catch number per recangle:
Max mean catch number per rocangle:
32459
E8
N
N
'"
'"
E7
E8
Eg
Fo
Fz
Fl
F3
F4
F,
F6
F7
F8
10270
Fo
GO
GI G2
. . , . . .
·····!--···-r-····l·--··r*-:··l·-···t·····-t·---·
,
···--!-··---!-·---T·-~·-r----r--·-I·----T··-·
~
~
'"
'"
~ ·:::::!~::::f:~l::~::l:::::1:~;::1:::~:1:::::·
0
'"
·__·+:·+·:-+--+-:··1--:·+···-+·····
'"on
'"'"
::::
.
43
.,
~
on
u
41
::::
39
on
on
38
•
37
;!;
~
~
N
N
~
~
on
on
on
on
on
-4 -3 -2 - I
0
......-+--+-..;J
10
U
12
Herring, Age group 2 1993 quarter 3
Herring, Age group 2 1993 quarter 4
1Iax moan catch number per rocangle:
Max mean catch number per rocangle:
E6
E7
E8
Eo
Fo
'"
t
I
•
I
Fz
F1
.
N
•
F3
F4
n
F6
F7
F6
5659
Fo
GO
,
~
,
~
•
I
,
•••
'0
40
,.,.,
i5
48
,., ••• '
I
,
I
,
,
I
·:::::t~::::f:~l:::::J::::::r~~::!:::::1:::::·
~ ·::4::::[::~~r::::T:~:T:::r:~:r~::
46
:····_,·_·_--[--:--:-··_·+-·--1---··+-:··j·-:-··:
;----- :---·-·:------:--··--:····--~-----t·-·--!----··,
.
I
·-·-·-r------r------r--··-y···--r--·-r----l---_··
,; _·-·-j-----l------r·--··1--···-1·-----t·-----t-----
'I
:::::1~::::1:~l:::::t::::::1:~:::~:::::~:::::
·::~::::I::~:::r::~::l:::::l::::::!::~::I::~::
i5
938
N
'"
'2
,
··--·J---'--i-·:-nr--:--t·-~·'l----·!"---·-i-··-·
'"
13
GI G2
.
·-_··-1-·--·-r---·-1---·-t--~·-1-···--1·--···1-·-··
•
on4----<e---t--+--+--t---i--+--t----t--+--+--+----<~
-4 -3 -2 - I 0
6
o
601OUlZ13
6
I."'"
"on :-·---~---··+----+---·+_··_+--·--t·-·-·+---·+---- .
!--··--r-----l -_._~ ..._.~. __.._{-_._.4.---..i-.--..~--_._+_. __.
,
•
1
•
I
•
,
•
I
•
,
•
'
•
I
•
I
•
43
~
4Z
41
::::
40
40
30
on
on
38
37
...on
36
3'
~
~
on
on
34
33
33
N
N
on
on
32
31
;::4--t----t--+--+--+----1t----t--+--+-+--i--+--t--+--t-----;-_+'
801OUlZ13
8
-4 -3 -2 -1 0
Figure 4.5
-4 -3 -2 - I
Herring: number per hour, 2-ringers.
13
0
6
8
0
Xl
U
12
13
- - - - - -
-
-
HeITing, Age group 3+
HeITing, Age group 3 +
1993 quarter 2
Max mean catch numbor per rocanglo: 33088
:1993 quarter 1
Max mean catch number por rocanglo:
12484
E6
E7
E6
E9
f2
f1
Fo
F3
..,..,
39
....,
....,
32
31
31
-4 -3 -2 -1
0
9
6
HeITing, Age group 3+
10
E6
E7
I
E6
,
E9
,
f1
Fo
,
I
F2
,
F3
F4
12
13
-4 -3 -2
:1993 quarter 3
Max moan catch number per recanglo:
.'"
U
Fa
f7
Fa
F6
GO
GI
:.:.:.:.:
:
~ ••••-. ~ •••_-. f
~--.,
"
"
1681
__
.:. .
,
l
.
-.l..--..,
;
;..-.•.i
}~ ..i -.i -.-i,----,r'1~L- . ;-.--.;
--i -
49
:e
::::r;.::::::::r.:.'.,:.·.;,:·.':.:.'.'..·.
46
..:.:",:'.:.:.:.:.::.:
t ,.
i
44
··~-~·~~--+··-··~--· -i·-·-··t·----;---··-r··-·-·~·-··+."
:1993 quarter 4
~ ·-·~··-·f··:···f··:··i···~·+·~··l·-. ·+~·· i;v{-: : ;tf~~ i
i"'" ;·'·"r"·':··"·'r·:·-r"-l"".--r~'··: '-·"i:~~~._. .
·.'.:.·:.:.:.l,~.· 4'
'-···-r······t·····r:··r:··r-:-·i···-··i"·~-·r···,~
; : ; ; ;
-----+:-.--.
•- -.+.- -.-~-- ...-~- -.-.~ I··---.; ---... ~ .•. ---~---.•
"
...·..
.
.-
{:--... -~:- ..•-l
~ 1-·-··-[···-i-·:···f··~··i--~-i··~··i···:··1··-.-··f···-·t·-···i··-:·-i-····-1··
..'..
...
.
~
13
:
g
~ ::4::::f::~:~f::~::r:::::r::;::j::~::I::~::·
~ 6J~F~:T~:T~:r:r~::'f-'--'
12
: -i--ih1-+i =:~:I::il~T~
·:. :.t : ,:_~ .: .:_.\: _~.· ~:.(: .: .: .: ~: ':. _: ~.: '. :. :.' ~.' ~ .;!: ,':. :.':~ ,; ~:, :, :_,: , ·_··_-}~tv't~--_··~----·-\-----}-·---+----·r·---·~'7: : :., , - f~.!.-; -.; --+-+.--+.--..!.---.+
I
:::::I::~::f:~:::::t::~::l:::~::l:::~::I:::::·
g
U
.
G2
·---·-t--··-·~··----~·-···{_~··--~-··--·t·-·-·-t·----
:
10
Max moan catch numbor per rocanglo:
··---·r-·--·r-···-r··-·-r--~--1---:··;-----·1--··-
c;
a
0
HeITing, Age group 3+
14129
F9
-I
I
• •
··---·f-----
-----~: .-•...{:.--•. --~:- •••"'-~:.--.---t:.-----~:
. . ,
I
,
•
,
:
:
:
:; ;····--i--··- ~--_··_r--···1-·-~·-1--:-·t·_----!·-····r·_··--t·-~-·1- -----1------1-i-'-" -'- ----1- -~--t ~-:.- r.-~ "1---:'- t···---;-':-'-1-- -0. t--- '-1"---.- i------ ~
t------~
,
L . ..t.-----L.:.-L-~~-L-~--i..--.-L-.-.-i-...-~.-.-.~~.--.J.---.,
~
l' '-
:
r--
:
_.A.
.
! ' : 43
---r---·-t" -_.~
r---~-
"
··:·-----r---··r-~--1···:-·~·"'--t--·--t-·-··r-·---t--·- ·t-···~
I.
{
t--..
:l~lIjBjltFF[J:~~~IEi~~
..,..,
~ j::::::t~::t:::i:::::~y'
·:-·:i·~:··r:::::~::::::r:::·-~·~::t:::::t:::::l::::::1::~::!:::::t:::::t:::::j· ::
...,
:
~ ~
:
..--..:~-- ...:~ .... -.~--.. ~-: .. --~.:
:
--.~--
:
:
:
:
:
:
:
:
:
...-:-...-'.'-,: -- :-·---·-:-·-··-:·---·-:----··~·---·;--·-T----·~-
33
~ ~::l:::::i:::::t::~.:::t::t:::::t:::::J:::::t:::::l::::t::t:::::1' ::
-4 -3 -2 - I
Figure 4.6
0
a9VU1213
-4 -3 -2 -1
Herring: number per hour, 3+ringers.
14
0
4
6
a
10
U
12
13
Herring, Age group 1 1993 quarter 1
Eo
E7
E'
Eo
Fo
F1
N
o
F2
F3
F4
F5
..
•
,14ll.
,
,
,
,
F.
Fo
GO
GI
G2
E.
E7
E.
Eo
Fo
FI
F2
F3
F4
F5
Fo
F7
Fo
Fo
Go
GI
G2
o
,
.
.,, ....
,
F7
N
·,, ,. .,, .,, ..,
,
. . , ,
,
Fo
Herring, Age group 1 1993 quarter 2
• __ •• _I •••••• t. ••••••\. •••• _J•• _ ••• J __ ••• ~ ••• _ •• I
'2
·--···i-····i--··--f·····r-··-r-·--·r-····l····.. ---..-..
ö
,
,138 ,
,
50
~ ::::T::T~::::::F:::F::r:::+::::: ::::::r-.:.
~ :::~:::r::r:::F::r:::r::::r:::: ::::::f·· .;
-_
i
:; .
-··_·-r-···-,--_··-~····_·,·_···i····_·t······
: ~1:
i
:
·······~······i·····
: 111:
:
;_._.. ~
:-
:'"
__·
: :166··--,--···{······i·--··j---···,······,······,·····
:165 :110 : : :213 :115 :158
; ••••• _j.- ••••;.
,.
~
:
_·_··.-····r·-··-~·-···~··--·_{---·_,-··---,_··--·~_·
:
. " . " "
:~:~:~:~:166:
~--··-·~·-···~······;-·····i··_··-,_
.. ···;-····_j.·····,···,··i-'···';--
i······j····
: : :173 : : : :112 :182 :166 +:151 :139 :138 :
~ j. . ~.f.~?+~;.~j i.~.i.!!.~.f.~.~.~.~~.~.J.~.~
L....;-.....~ .. ~.~~i.~.L~~.L~.i.~.~.~~.~.~1..~.1.~.l
: •••••• 1 • • • • • ;_ •• _ •• ~._ ••• ; __ •••• ~ •••••• , •••••• ; •••••• ;.
~
~
_.
,.
~
:
41
40
: ~: o:;+:;!;;;J :~:!:!::!::L:l': ;1'.; ::
:
[JrlI~'~I;I~I~!~!~l~l,jijJ
:
•
i·····~-····l·····+···-+····j···· i·~·i·~·~··· +_.. +
j i i.._..~ +_ + :
M
on
34
34
:~·rTij;;;=r~";::I,:TT;···· :
n
.
-4
-3
-2
-1
_
1"'
_ ••
~
••••• _
E7
Eo
[0
Fo
F2
FI
F3
F4
F5
FO
F7
Fa
FO
GO
GI
•
•
•
....•....
.
-4
-3
-2
-1
0
32
3\
.
v
U
12
L3
Herring, Age group 1 1993 quarter 4
Herring, Age group 1 1993 quarter 3
Es
•
_~··:·····f·····t·
.,
_
agJ)l11213
0
33
N
Il").
G2
N
0
.
· .
,
,
,
.
52
······[······f····r···f·····r··-r-···T·····
;;
TIi~rt=[J=]_.
:242: :240: :227:224:
:
0
0
"r"
······r····· .~
•
~'.".,.'t:!"<~
~
{
~
~
50
40
40
.......•....:-
~
:219:234:
242:: 237:+248:! 227:-/....Q;;..
--f- +
:'l
:.
:
'
: .
: :
: :216:211: :233:220:224
..... ... -.. ~ .... _~ ·_···-:······~······~··_··-I·-····
:227:~i=:~:~:248:22O~
·····r······~··-···;.·····~······;-_···;···_··1-·····r·
47
40
....
:;. :;. :211:224:22O:22O:227:227:~
;
: : 201 :213:~:232:230: :=:
··_+·····-:······~····-·i···_··,······j.·····+·····
"on
43
42
41
::l
40
30
on
on
3.
...on
37
30
M
on
34
33
N
on
32
: 3\
;;;4--t--t--+-t--t--t--+--t--+--t--r--+--t--r--t-+--tJ
-4 -3 -2 -I
Figure 4.7
0
-4
Qllll1213
Herring: mean length (mm), I-ringers.
15
-3
-2
-1
0
IJ
11
12
13
Sprat, Age group 0
Max mean catch number per recangle:
E6
E1
E6
EQ
Fo
f1
FZ
F3
Sprat, Age group 0
1993 quarter 3
F(
F5
F6
F1
F6
Max mean catch number per recangle:
567
FQ
GO
GI
;
"-""i-
:
:
._.+-_._-+. _..
L .L.
:
~~.
:
:-
:
:
:
:
:
:
:
:
:
:
:
--f---·-+-····i-····-~·_-_·t·_----!·_·_··f··_··t----·i······i-····-~
: .. : __ ..,
~._
_-~_.
- ( -3
~.
-z
Figure 4.8
: .... : .... : .. :
-_.~
-1
-~_
0
-~--_
:
~
-_.. ....
:.. __ ..: ... -}:... :.. __ .. ';': .....:
:
{
...;--
_~._-_._~
~-_
_.~
:
_.~
:
152294
Gz
~Y::+:~~.i--+--+----"'--i----i----+-.i--+---i· __.. ·t·__·- f" ·~-r----·
.
1993 quarter 4
: 43
~
1 42
:
: 41
.. _+ -- -. -i.. .'
I:
.- .. .:.. _.. '.
40
"
- ( -3
lJUlZ13
Sprat: number per hauT, age-group O.
16
-z
-1
0
6
OlJUlZ13
Sprat. Age group 1 1993 quarter 1
Sprat, Age group 1 1993 quarter 2
Max moan catch numbor por rocangle:
Max moan catch numbor por rocanglo: 1!J5360
38100
•
-4 -3 -2 -1
10
8
0
U
12
-4 -3 -2 -1
13
0
10
11
Sprat. Age group 1 1993 quarter 3
Sprat. Age group 1 1993 quarter 4
Max moan catch number per rocangle:
Max moan catch number por rocanglo:
~
60161
[8
:-····-t--_··-t-_··-t·_··-r···--1--···t··_---t-_·..-:--···_~:---_·:----_·t-·_·-:- .._·t··_--t---_·t
: : : : : : : : :
~i
~
..--.: : : : : : : S2
-+
f •.
tr.::::::::r::}.. .
f ••••••f •.•..:••••••,.
j ..--.i---... f.. _.j._.. _j.-_._-j.._._.i-.._.-i--_ ~-_ l--~~~-- _.i-...
i-.----j
: : i i i i : i i i i : i i i i :
-----!.._- ..- --t---··"'·--···i
.. --L--.
, : _.-t
'
,
I
~ j. ;.
i····--t-_··-t:
:
1.. ~_.~.
:
I
I
•
I
I
I
I
I
I
•
·-f---·-i'---··-~·--··-f··_···i·-·-·-r--···+-···-i··--- -i----·':
:
:.:
:
,
"'i--
:.:.:.:.:.:.:
I
1-'
'
:.:
+....
F2
Fl
F3
F~
F4
F6
F7
F8
F9
GO
Gl
G2
:
:
:
:
:
:
::
...-
: : : : : : : : 52
L
t·····t··
-·~_·····t--_···~···---~··-··t-·-···~
4~
44
43
42
I
•
.;
Fa
113551
~
+..+.+-:..j._..+-..+..+.. .~.;+.~+;. j ····t··_··l ...+.. :.. ~ ::
:
[9
t-···--~_·---t·-----~---·-~--··-·i-----t·----·t-··-··~·
:~tl=t-tt~l:f+~l=f:~fEi~~
I ..•. .•.••. f••••••f •••• +-.... l._•• -t-....-t-
[8
13
:······:---·-:-·-·-:··-··1-···--1-----:·-··--:··-···:·.-.....~·,,;..-----t---·-!······t··--·t-··--t·-·-·t--·-·:
'
:
"l::a~:=EliFE~EEEEEl :
[7
12
•
•
···-t ... :
:
'
: 39
n
i~'· ·ULLL·L~L:-L~l~LL~J,L:
,\5), '"
i· · ·~· · ~· . j.,.)..!.,~.,~) ..~,.l.~+ . :--+.....1,.~. !.~~: . . . :.. . st
.
.. :j.
:;
~-:
J.
'
:
:
:.:.:.:.:
.
:.:.
oe·
.
:
':
..-.' ·····f--···+--··
·----f----··r-----+----t·----t· . +--- .---1-----: .. +--.-. :
::
r--··-~--·--f
.: • : • :.: • : • :.: . '
~
:
:
38
37
: 36
"t~;::w:::;. ;.:j~Lijjtttr~l::!=r=f "
-4 -3 -2 -1
Figure 4.9
0
6
9
10
U
12
:~]+1~liE]I·.JJ1r,~~
-4 -3 -2 -1
13
Sprat: number per hour, age-group I.
17
0
6
891OU1213
Sprat. Age group 2 1993 quarter 1
Sprat. Age group 2 1993 quarter 2
Max moan eateh numbor por roeanglo:
Max mean eateh numbor por rocangle:
61859
-4 -3 -2
10
46124
~ ;::::::[~::::i::::T::::r::::L:::I::::L:T::::~I~r:::r~::f:::::r:1::::;
5Z
:1=!I~~I:=[=rrTm;I;!~r~l]
:
t2.. . '. .
-.t:~ t~.t
:r·f};I~I~tlij=j:t;t:;:,~JI·i jj
i .....t ..
-.'-.-i...-,.-..t..
..
....,.
on
on
36
:~1~1~I!tlI~~:I=~!I)i~~
,
-4
• •
-3
-z
-I
•
•
•
'
•
•
•
'
•
I
•
'
•
•
•
I
0
,
,
,
,
I
9
10
11
1Z
13
-1
0
8
8
1%
11
Sprat. Age group 2 1993 quarter 3
Sprat. Age group 2 1993 quarter 4
Max moan eateh number per reeangle:
Max moan catch numbor per roeanglo: 32368
47191
E8
E7
E8
E9
Fo
F1
FZ
F3
F4
F5
F8
F7
F8
F9
Go
GI
13
Gz
:[-i:mrl=l:F~~'
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,
I
,
,
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,
,
,
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,
,
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,
,
,
,
,
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,
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~ i------f------f--lf-----i------i------i------t------f------f---- :.-----~----·j------\-----l------f------f-----i-
49
~ j:::~::::t::::::f:::::t:::::I::::::i::::t:::::i::::::1-- : -::I:::::j::::::t;jJ--::---:::i::::J::
~
..".. --•. ··-~-----+·---_·:--_·-·~· __ ··t·_-·-·t----··}-·-··+--·
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:
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i
i
i
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,-_..• +... _-+
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i :
r"
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:
:
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i
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: 43
+.--_.'..--_.{-
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.
44
4Z
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~ 1;t::::I:::::1:::--~-----r-~--!--~--r·--r--:-1--~--r~(:~r.p+::-f---::t:::::135
-4 -3
-z
-1
Figure 4.10
0
8
10
11
1%
:3887
:~l~H~~lfitj]]tlt~
13
-4 -3 -2
Sprat: number per hour, age-group 2.
18
-1
0
8
10
11
1%
13
.
',.,:"
Sprat, Age group 3 +
Sprat, Age group 3 +
1993 quarter 1
Max mean catch number per recangle: 12020
Max moan catch number per recanglo:
.'"
'"
6937
j::::::[~::::f::::T::::r:::r::r::::j:::::r:::~~;::j::::::i:::::[:::::r:::r:::r
:l
52
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;;:::::::::
51
~
:51
50
49
0
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.
.,
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:.:.:
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:
:
:
:
:
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..
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.
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..
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:
-'
~ ;:::4:::::1:::::r::r::r:::r::::1::::::~::::::;_.~·'
·::r.:::::j::::::l::~··:····r::r:::147
:
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~
:
:
:
:
:
::
:
.:
:
: 46
•......;-...._{..... ,..... + .....:. ....-:-..... ~.
~
•
:
:
····f
: . : . : 43
, : ·--t--~--t· ' '1
~
f"'-+"~
42
··:J-++:~I:!~i~~!~~Alfal~~~
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i~:i~.+;+iH;~~i::
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.
:
: _' ····:····~·····i······i······i······i······:······:··· .. ~
I
33
.,
:
······f-····+·····~······{-_···j·····+····+····+···
43
42
···+~t'
+::
.' -- .. -_.,
~~-,:,._.~.;
•• : . :
i ···-+·~···[_·:·+·····'······i··~·-i····+·····f·····~···.)..... '.. i·:::::I::~:·;::·:::;::::t:-:::::j- ::
.,.,
•
1993 quarter 2
; 2r:.l::::t::.:t:~:::~~::t::::l:::::L::j::::::t:::::l::::::t:::::t:::::t ::
;;
-4 -3 -2 -1
0
10
8
4
Sprat, Age group 3 +
U
12
13
-4 -3 -2 -1
Sprat, Age group 3 +
1993 quarter 3
Max mean catch number per rocangle:
:l
51
.... :
:
o
I
:.:
:• :
:
:
:
:
:
:
:
:
.~- .. -~._-.
:
:.:
:
f" '-r'~" ;'"--"1
13
1444
:
:
:
:
:
:
:
:
:
:
:
:
:
:
::::::
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.~.... ;-.~.- ·t-...--:------;-----';
:
,
:
:
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...
:
:
:
:
:
t.··_-+·····f····-+·····r·····~
51
:!jO
:[~~~I~:j~:f=IJl~l~iiiIlj:!
: : : ' : :47
:
12
1993 quarter 4
:·~··~-:-_·~-:··_---:-·_·~t ·~·--:·~···-t··----:-~· ·:-~··~
1.••.••f-..-+~' ....+
,liIIEEIIEE$[E=tlFJ::
,
U
IQ
r-····t······i····r···i·····r··r··r···r····~~·
··~····r··-r-···-r-···r···r···r··i 52
:--·_--:-·~-·:~~··-t··~-~t···--:·_··-:······t-_·-·-:--_.-.1.. t-----r'- -·;·-····t-·_·-t-_·_--t-_··-t·--··;·
50
49
~:
9
l'vIax mean catch number per rocanglo:
9524
.'"
: : : : : : : : : :
8
0
44
_.-~.-~_.-
43
.. f" "1----' :·-····1
IF1::
43
'-"f-'--'~-' .-.~­
... :
~-.~--L-
42
41
40
.,.,
39
36
:
36
33
32
31
;;4--I---+---f--+--+--1--+-+--+-+--1~-+-+--+--+--+--;J
Figure 4.11
6
8
D
U
12
::
: • : • : • : • : • : .:
~ 1~~::::t:::::t:::i . .i
35
34
0
.----,
~- ·~-f---·-t-~-~··~· ··_~~~·--~----·:--·--~----·-~·---·+-·_--t--·--t--_··~-~--.
:; ~ ._.: __...~_.~~_+._ .. t~.~.-i-.-~-.t.-.~--f.-~ . -~._~. +-~. t.-:..+.-~~.i-----
37
-4 -3 -2 -1
39
13
Sprat: number per hour. age-group 3+.
19
j
.j
'
-'-~---r-'" ~
.----~-.-.
:
:
:.._+ u+
:
:
37
: 36
L.. i ~~.::::j ::t::~:.;:::::t::::::::::135
1 _..
,EttEf±t~j;ttEi=F!tF1J :
. . 2~.j . ._.1.__._L_._J2..J. J__._J
..l._.~_l..~._L_. __ L~u.L __ .L.~_~L ....L__..: 31
.,y.:.:.::.:.:,~.:...;...::.:.:,;:..:.:.:.:.;:.::.:.:,+:.....::j-+-i--i--+---t--i--i--i--+---t--;J
o J) 11 12 13
6
-4 -3 -2 - I 0
2
Sprat, Age group 1 1993 quarter 2
Sprat, Age group 1 1993 quarter 1
.."
E6
E7
Ea
Eo
Fa
Ft
F3
F2
F4
F.
Fo
F7
F6
Fo
Go
GI
E7
E6
G2
E8
Eo
Fa
FI
F2
F3
F4
F,
Fo
F7
F6
Fo
GO
GI
G2
'1
.0
.0
40
40
46
46
47
47
..
46
46
1······,······,
,
:;:; :
:
~.
:
,
;. __ .. ;
"
_~
_.. ~
96:
-_.
:;:; ;•••••• i- •••• - ~--·---}···-·i······~·····-;-···-·;····-·;.······}·····i--··-·i·--··-I--t~_"N·
~._
~
: 76
: 71 : 73 :
:
:
:
i
:
: 96 : 93 :
:
:
:
: tle : 71 : 73 : 71 :
: : :113:106:i i···
: :..-..-:
: : --}.i - 4-i ••••• i······
: i-·: --.. ;
~: ...L~-.~~L-- ..L-.--f L-.. .L- .L l.. L~!-.j
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:
~
.. ..~-- .. _~.. _-_.~._
~
: 1J : '06 : 97
~
~
: 103 :
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.-~
..-
--~-----
,
t-·_·-
-:
~_._._.:
~._
~
~
.._ .._.
~._
; •••••• I.
~
: 113 : 92 : 96 : 113 : 111 : 76 : 72 : 60 :
••••• - ~ _••• _.~. • •••j.. - _•• ;- -_. -. ; - -. _. -;. - •• ' -; _•••• -~ ••••••j. - - - - - ;- -- - •• ;_ ••••• ;
~ j.. ~ ) --f-~~-~·_~·~···_··!·~-·1-~~··~-~·~-+·?_~·~··?~-j--~·_{--. +-:~
...: .l.. ~.Illl.L.~.!.~7..i.~~.j.7.~ ..l.!~..l.!::.l.!~.!-::. .. ].7....:.....
~
:
:
'
:
:
:
.. _.. :
: 60 : 64 : 66 : 60 : 72 : 73 : 81 : 82
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85 : 78
-~
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i
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i 82 ! 70 : 72 : 75 i 81 i ~ .. j i
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:
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.. -:-.- -..
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: 85 : 93 :
-- ._._} -_._;- .. _.- ,-.--._;
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:~It'fl~!~!~!il~t~':r:i::'
37
.. -: -.. ~--.-- -- .. --~.- ..
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36
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-4
-3
-2
-1
0
U
I)
12
13
-4
Sprat, Age group 1 1993 quarter 3
E6
E7
Ea
~_ •••• _l_ ••• _ ••• _
Eo
Fo
FI
F2
F3
F4
F'
_.~ ••••• ~ •••••• I •• _ •• _••••••••••• _
F6
F7
Fa
Fo
GO
-2
-1
n
0
u
12
13
Sprat, Age group 1 1993 quarter 4
GI
G2
Eo
0:. :, ,: :, :, : :. :, :, :
N
-3
.
3
,
r···r·····[·-··--r·-···r·--·r···-r···--r-···r-···-..
C; ~-···--:-·-··-}-·----}--·--7.···-~··-···l······:···-··~ ..... _~.""'~;!"'<:t=
E7
Ea
Eo
Fa
Ft
F2
F3
F4
F'
Fo
F7
F6
Fo
GO
GI
G2
---j·-----f··-··r·····r····r-··-·1
-·1··-···1·····-r·····r···-r-··-·l '1
r·····t-····1-··--T·····T····-r·····I··-···I-·····r···..;l·····-I·-···-[······r··-··r··-··r-·-··r······;······r...-.-"
32
r---T··-··r-··--r····r····r···-r····T··-·r·····,· '.r- -.- --··-r-··-r····-r-···-r--··r····l
]:~~::~:1!,:~::J:,:~::,
,····-r·····:··-··r·····~·-···r·-··1
g
·11 ~~::J,::~~:J:,:~:::t;:::::~J!,~::~J:::::::t:,..: ;.-..
······t····l·····-r-··_··i·-····i·····1···-··1
c;
'0
49
r
1
~ j::'4::::[::::::I::::::t:::r::r:::r::l:::::r.. ': . .~.... -,- . . i""':' . . . : : : : .:;
46
:; :-::::.i~:t:~:t;~L:r:::L:::r:::r::::t:::
. ;:::~[::~::t:::::L::T::::j
: : :124:138:'
:::::::"
43
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....on
42
41
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40
30
30
on
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36
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37
37
36
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35
34
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on
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.
33
.
32
34
..
: .:·····~·····:······t····i····t·····(··~
::
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on
....•.... - -_.------_
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..
31
31
;:; ,+--t--l--t--t--l--t---t--\---t--t--'+--"-"-;"-"-"-"t-"-'--'+"'-"'-"-j-f-"-"-'-+'-"-"-;J'
-4 -3 -2 -1 0
OK)UJ213
o
Figure 4.12
-4
Sprat: rnean length (rnrn), age-group I.
20
-3
-2
-1
6
J)
11
12
13
Mackere!, Age group 0 1993 quarter 3
Mackerel, Age group 0
Max mean catch number per recangle:
Max mean catch number per recangle:
422
-4
Xl
776
1993 quarter 4
~2
~I
47
46
.
4~
43
42
41
~
~
37
•
36
33
;;t;:.:.:.:.::.;=::;.:.::.:.::.;=...;:.::::.:.:.;=.:.t---i=-i--i--i--i-+--i--i--i--i----tl
-4 -3 -2 - I
0
9XlU1213
•
Figure 4.13
Mackerei: number per hour, age-group O.
21
-3 -2
-I
0
6
U
12
13
Mackerel, Age group 1 1993 quarter 1
Mackerel, Age group 1 1993 quarter 2
Max mean catch number per recangle:
Max mean catch number per recangle:
38
:[-.r!~~I~i~;i;:T-';I~I:[Ll-'ll{l~;
,
! ..
+-+..+
:l
:.:.:
::
i
:
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,,-_.+....•.{-- ••...;.
:
43
:
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:
:
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-3 -2
-1
: i
:
:
:'1
0
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6
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:
:
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:
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:
:
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;
44
: 43
·[!.ETlrlIj:r!T.~\~r:T1::
+..+. +..+.+.. t.. :..
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~ L -:_... : :..... j.....
-4
:~. t,:y:
i
···,~·,····,·····j~t·+···,
-<--..
. ----t·.···i·--·.·i------t···--·t·---··f.·····[-·.··
:
)::::::f~:::r···T····T····r·····r--··l::::::[:::::1tt:I;::l::::::c::::t::::::::::::I:::::;-'2
~::
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:
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-4 -3 -2
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. .~
+-.~
I
,
"
j
9
0
l)
11
12
Mackerel, Age group 1 1993 quarter 3
Mackerel, Age group 1 1993 quarter 4
Max mean catch number per recangle:
Max mean catch number per recangle:
3939
39
36
I"
13
440
:EF1::~:;:T:L:F:~E!=l::f:E! :
:j~:;]§:I:-I-l:~~~;::;I~II~;j~
.
,~·~---~·····~·--:_·1--~-·t·_ ·_-~-······~-_:···~·_--·
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.._.~-- ---~.. ---i:
:.:.:.:
:
:
:
:.
:
:
:
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r··--·t---· '.
: :
:
. : : : : . : : : :
I
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I
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~.
:
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. : .:
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:
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:
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:
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: : : : 42
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39
38
37
~ j::::::[:::)::::t::::t····· :~~··l:::~:t;:::· ;·~t:::::t:::::j::::::;:::):::::t:::::t:::) ::
In
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36
.~
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33
~ ~::~:::::r::::!:···f j..! .. ~~ ~=+.:.:.;::::::r:::j::::::;::::::(:::::~:::::!:::::r
l J J..::J:!. ~...l.._.L...i L.....l.._..L 1....1 1
;; 8
-4 -3 -2 -1
Figure 4.14
32
31
0
6
-4 -3 -2 -1
8910111213
MackereI: number per hour, age-group I.
22
0
1
2
6
44
_ : ~ _._.~...._~~. _..~. 43
:
~ 0:::::.[ :·····t:::::1::~::1:::::;::::::~:::::r~::t:::::~:::::r··· :~.'~":~~: _ ~ .. :'j
.l.. l....{ ..... . .
42
: :
--··t······r ··-t .. ' ..
j······t····· . ·t"·'i"·:··j··':"i······t·~···t··:··t:··t:·t.:
. Lj..:..
:
- - . "'m'"
····t ... :
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'···-··~-···-~-·-·-·~-·-·-·~····-·t······r······~·_··~·.-
:
I
I
••••
: : : .:
:
' : :
I
44
43
Q'X)l11213
,"
,
'.~
Mackere!, Age group 2 1993 quarter 1
Mackere!, Age group 2 1993 quarter 2
Max mean catch numbor per recanglo: 59
Max mean catch number per rocangle: V14
[6
...
[7
[a
[9
Fo
F1
F2
F4
F3
F5
F6
F7
Fa
F9
GO
G1
G2
[6
'"
52
51
50
[7
[a
[9
Fo
F1
F2
f4
F3
F5
F6
F7
Fa
F9
GO
G1
G2
~ r:::c:::-r--·--r---·r--r---l·----1::::::i:::::~r~:I::::r:~:r:::::::::t:::::)
i
i:: i
i ~.l--: i : i i
52
~i
:51
:Ei=ilIFL =iiEEEE!:J::
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;
_~ ~~.--.-t-.-.. ~
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48
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:
0
6
IvIackerel, Age group 2
1993 quarter 3
...... ~
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:
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,
:
:
:
:
:
:
:
34
33
0
J)
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12
13
1993 quarter 4
422
.,...
n
,.
: :
Max mean catch number per rocangle:
~~.
··J·-----t-····!···---t-·····:· ··t-----t----·1'" t·····-t--···t·----t-····r·····1-----t······t·····-t··....
:
:
:
:
:
:
:
::
: : : : : : : : 52
t--·---~-···
I
MackereI, Age group 2
2469
...
:
-4 -3 -2 -1
a9DUUD
Max mean catch numbor per rocangle:
:
: ~::!:::::l:::::t:. . ;-: : :~: :l: : :t: : :t: : :J: : : I: : : 1: : :1: : :1: : : ':
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:
52
··t-····-t-····-~·----+-----t-·_··~
51
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40
~
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47
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40
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Figure 4.15
0
6
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D
MackereI: number per hour, age-group 2.
23
0
a9DUUD
MackereI, Age group 3 +
Mackerel, Age group 3 +
1993 quarter 1
Max moan catch numbor por rocanglo:
122
1993 quarter 2
Max moan catch numbor por recanglo: 429
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40
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0
10
U
U
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13
Ea
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f1
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F3
F4
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f7
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GO
o
6
MackereI, Age group 3 +
1993 quarter 3
1Iax moan catch number per recanglo: 1997
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11
IJ
12
13
1993 quarter 4
Max moan catch numbor per rocanglo: 1591
GI
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on
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:
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13
Mackerei: number per hüur, age-group 3+.
24
-3 -2
-1
0
6
8
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10
11
12
13
34
33
32
31
Mackerel, Age group 1 1993 quarter 1
Eo
E7
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FI
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F3
F4
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GI
Mackerel, Age group 1 1993 quarter 2
G2
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Mackerel, Age group 1 1993 quarter 4
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32
Mackerel, Age group 1 1993 quarter 3
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Figure 4.17
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12
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13
Maekerel: rnean length (ern below), age-group I.
25
-3 -2
-1
0
,
:
34
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-----------------------------------------
Cod, Age group 0
Max mean catch number per recangle:
E6
E7
E6
E9
Fo
F1
F2
F3
Cod, Age group 0
1993 quarter 3
F4
F5
F6
F7
F6
Max mean catch number per recangle:
1484
F9
GO
1993 quarter 4
Gl
2640
G2
N
'"
52
50
49
o
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46
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46
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47
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39
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Figure 4.18
0
1)
11
U
13
-4
Cod: number per hour, age-group O.
26
-3 -2
-1
0
6
Xl
11
12
13
Cod, Age group 1 1993 quarter 1
Cod, Age group 1 1993 quarter 2
Max moan catch numbor per rocanglo: 435
Max moan catch number per rocangle: 184
..'"
[6
[7
[6
[9
Fa
F1
F2
F3
F4
F5
F6
F7
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12
13
-4 -3 -2 - I
0
6
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U
Cod, Age group 1 1993 quarter 3
Cod, Age group 1 1993 quarter 4
Max moan catch number per rocangle: 1394
r-,fax moan catch number per rocanglo: V2
12
13
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60
60
40
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-4 -3 -2 - I
Figure 4.19
0
6
-4 -3 -2 -I
601lUI213
Cod: number per hour, age-group 1.
27
0
6
Il
U
12
13
Cod, Age group 2
Cod, Age group 2
1993 quarter 1
Max moan catch mImbor por rocanglo:
124
1993 quarter 2
Max moan catch numbor por rocanglo: 113
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[Q
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F3
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-4 -3 -2 -1
0
3
678
4
0
32
31
-4 -3 -2 -1
0
Cod. Age group 2 1993 quarter 3
Max moan catch numbor por rocanglo:
[6
[7
[6
[Q
Fo
Fl
F2
F3
F4
FS
F6
F7
F8
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In:
1993 quarter 4
:l -.-..
, ·-.-~'.-·-i".-·.-i----.t·-.··~-.-..-f---·-, , .
' : - ..-[..-.. "'---'i
• : .:
:.: -:
:.:.:.:
: • : • : 43
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·--·f··---t" -·-i·
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·--·r·-·-·f·····i-----·1-----·t--····t·-·-··f---·--f·----i-·····t····· •.. -~. ----r f-·-··t···-· :.
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: 4.
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:
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00
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:
2
Max moan catch numbor por rocanglo:
GO
~ ~ •••••• ~ ..... n.~n...... ·~··..- .. t----·~·...... ·t··-... -t----·-~---·-·:~~t-··-··t--·-·-t·--·-~-
1
Cod, Age group 2
51
FQ
0
~ ~--.--.f--.-.~----~- .... j - . • ;.-~--~ ... -.-~.-~
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35
34
'33
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0
-4 -3 -2 -1
Cod: number per hour, age-group 2.
28
0
1
2
6
6QDUUO
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~'
Cod. Age group 3 +
Cod. Age group 3 +
1993 quarter 1
~
0
~
n n
~
~
n n
~
n
~
73
n
~
~
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on
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47
46
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1993 quarter 2
Max mean eateh number per roeangle:
Max mean eateh number per roeangle: 47
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-4 -3 -2 -1
0
6
Cod. Age group 3 +
o
10
11
12
-4
13
-3 -2
-1
0
Cod. Age group 3 +
1993 quarter 3
6
Xl
U
12
3'
31
13
1993 quarter 4
f'.lax menn enteh number per roeangle: 22
Max mean eateh number per reeangle: 16
'"co
41
40
39
36
37
36
3S
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34
34
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33
32
33
32
31
31
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-4 -3 -2 -1
Figure 4.21
0
6
-4 -3 -2 -1
60Dl11213
Cod: number per hour. age-group 3+.
29
0
80:1>111213
Cod, Age group 1 1993 quarter 1
E6
E1
E6
Eo
Fo
F1
F2
F3
F4
F.
F6
F1
F6
Fo
Cod, Age group 1 1993 quarter 2
Go
GI
G2
E6
1······[····_·[·····_[·_-_-1"·····1'·····1······r·····"f---"':' ··~·····r···--1-···--I--·---r·--··r··_·r·--··1 52
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•
50
40
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13
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33
32
Cod, Age group 1 1993 quarter 4
.,, .,, .,
,
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,
Cod, Age group 1 1993 quarter 3
N
G2
.
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36
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:16:10
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Figure 4.22
10
11
12
~
~
-1
0
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31
13
-4
Cod: rnean length (ern below), age-group I.
30
-3
-2
36
. ,,.,, _ ., ., ,, .
. ,.,......•..
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.
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o
J)
U
12
13
34
31
Haddock, Age group 0
1993 quarter 3
Max mean catch number per recangle:
Haddock, Age group 0
11982
1993 quarter 4
Max mean catch number per recangle:
NI
h.
.a.n••• ~ ••••••'." __''''
'_J..
''-
.a.
.a
+.. .~
" j....--f-...+.;.. i . i. i i....
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j '
•
36
-4 -3 -2
-1
Figure 4.23
0
10
11
12
-4 -3 -2 -1
13
Haddock: number per hour, age-group O.
31
0
6
6
9
10
U
12
13
Haddock. Age group 1 1993 quarter 1
Haddock. Age group 1 1993 quarter 2
!\[ax moan eateh numbor por reeanglo:
Max mean eateh number per roeangle:
V741
-4 -3 -2 -1
10
[6
[7
[6
[9
Fo
F1
F2
F3
F4
F~
F6
F7
F6
7944
F9
GO
G1
G2
N
"
.,on
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39
on
on
...on
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N
on
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-4
-3 -2
-1
0
6
8
Xl
U
12
13
0
8
11
12
Haddock. Age group 1 1993 quarter 3
Haddock. Age group 1 1993 quarter 4
!\lax mean catch number per rocangle:
!\lax mean eatch number per recangle:
3794
13
5834
.,
.,
N
N
~2
~o
~o
49
49
46
....
on
.,on
on
on
...on
'"on
N
34
34
33
33
on
"on4--I---+-+---+--+-~r--+-+---+--+----'I---+-+---+--+-~r--t-I
-4 -3 -2 -1
Figure 4.24
0
6
:;;4--<I---+-+---+--+----'I---+--+---+-+--i--+--+--i---i--i--tJ
-4 -3 -2 -1
8910111213
Haddock: number per hour, age-group 1.
32
0
6
7
8
9
10
11
12
13
...
Haddock. Age group 2
,~
'\
1993 quarter 1
Max mean catch number per rocangle:
Haddock. Age group 2 1993 quarter 2
4365
Max mean catch number per rocangle:
E6
~ l::::::f::::~::T::T':-r-~'-:-'~'i::::::f:::::m~:r::::j::::::;:::::r::::t:::::; ::
~
~
+-..+.. . . : : : : :... : : :
:".-t.-r.-r;-r-;" '··---r -"( ~~·---T-----r-----ru--T---·r---·1
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j······f-··-+·_--'
:
:
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:....
j
I ••••
:..:. : e : • : •
_.~§~-~..__ .!----.-i-._.-~
_-+---_.+-_._.~
~o
40
;-----.: ·+~j-.j-~-;--~--;-.~-- ... -l~~:--~- ..-.;....--i.----l. ~~
.....-~-----j 46
i
• i.i • i • i.i.: •
: 1>', _.~-: _+--_.+..
i : i ....-:: -_.:-._..
: _~i 47
~ l---~ ~---+.__ -l__.n_-:--._.-~.---+-.-.+- ....
i ~ • i • : • i • :.:.: •
: ': : : . i·: : : 46
~
·-----.--·-4--···~·-··--~·---··f·-··--.--·-· -----+--- ···----{···---f····· .----+..-.. -~ ... +..... ~
:l --.··f-~.-f-~--f-~-1 -~-.j
~--i-~-·, ° i j :: ' :' i..:.. .-fj-----.j 4~
' . 0 __ ' ; ' _ _ '
•••
.. ..!.i..
.~~--~-~-i-.j.!..j..~-i--:--·~-.~- .• :
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:
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:
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.
• : • : • : • :. : ° : ° : • : ° : ° : • '
.····-·r-·-·-i······i-····-t··-··i-·····r---·-t·-··i-··---t---··
I.,
: .:
,
:
--·t·-··t· -··i·
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i:::~:::~:37
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36
3~
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34
33
N
on
32
31
-4 -3 -2 -1
0
Haddock, Age group 2
Il
6
6
11
12
13
'"
~
:
:
:.:
Ci r····r-·--T·~··
g
•
~
:l
I------t-----
,---·-t·····j-----t·-----!·····
: •
:g
on
on
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on
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--··-f-···+----+-----,-----+----
t-----
F7
F6
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:
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GI
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~
...on
:;
• : • ! - : - ! • : • :.
.:
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: =t).··-[·····i--····i--·--t·-·--i----··r--·-·.
:
I
: t:
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45
, ...-.-;..-. y----.;.
0:.
:.,: :44
,·-···-t-·--· . ···[----·'.----·i·
• :• :• : - :• :• :e :
: - .
: .: : 43
·--·-·f-·-··i-·····i·--·-:··----t-····t-..
··t··--·i······t..·· ' , , ·-··[----·t· --'i-
t-----~--·--·~······:·--···~··--·-t·--·--~----··.
:..-.. :.
.--~
:.:.:.:.:.:.:.:.:.:.~:
:.:
:42
--'-i~J::~::t~::t~:J::::L:::t::~::t::L::r:::: ~--.L-1~b/"·j"
, ;;- i
41
:
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:1~;11:::i-:::~-;A~;+]=F~·
. ~'--
:f~j±~~jt~*tEl=dJ::
:~E~:!iiimfFl~JLI~:
0
9
6
Il
11
12
13
1193
N
'"
: ~1
:
:
•
: •
: -
:
•
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:
,
:
:
:
:
:
:
: 4Q
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<6
47
:---r .-~-_L_~__L.:--L:--L~..)..~.-L-~--- ...L. L---L.-..L-- :------L--.-.[~-.L----; 46
-.---L~..L.~---L-~ . L.:..l.-~..f.-:.j--~-. -:.---.~...._:: : : :..:..L... 1-----.1- 45
: • : • ! • : • : • : • :....• :.
•!
....- .: ! .---.-!--_.
. :!
'.. : 44
•••
-~---.-~... -----i._.-.~.-.--~
,,~
.:-:e:-:.:-:
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.;.:
,·----f·-···i·····-i·-·--·t···..-!----·-t---···f·-··i-····-i--·-·: • : • : • : • : • : • : .:
:.:.
·---r-···-t····-i---·--i-·-···t···---t-·····r······r----i-·----t·····
,a··I., •.• ,., .. _.. 1
'
-.-.~
:.;:
-"-f-···-i·· "-i'
: .:
: 42
.:-----t··-··'
,
...+... '..
:·----f-····t-···+··--+-···+--··+····+·---+·----+-···
..
.:·-t--~-t·~··i···:··t··:·-.:
.: : : :
: : : .: .
-i·
:
on
on
mi:~;~rif~I=B=·=t-
...on
- - ~..-..~-.- .:- - : 1: : -~: : :r: : r: : :i ::
:
:••.• -.~-- •• -~ ••••~ •• -.-.:..-----~-... :.-----:-••-..~ ••••4-.--•.:-.. ---~-- •••. ~------:-----~ •.••. ~----~ .•••.
=:
F4
Max mean catch number per rocangle:
l:::::r.·
,::~-:t::~::r~::r~:r~:L:: :::::r
~::r:::r:::::~:::::r·~·-:t::::::t::::::!
• ! • : • : • : • : • :.
:
: : ! : : :
L
...on
:
F3
• i ·-~--r·;·-r:··i . . . ~~.··r .-.:·--··r--·-r----r···-T~---r----1 so
:
:.
:
F2
Haddock. Age group 2 1993 quarter 4
.. : ··;··----t-·-··:····--;-----t-·--·1·
: : : : : : ~2
······:···--·~~t---·-t-·
:
~'"
'
:
• : • :.
FI
~ ;::l:~::l:;:J::::::l:=::U::I:::::· :::::L~i.. ::j::::::I::::tt::::;~-::L::J ::
.! : :
1993 quarter 3
~i---
Fo
r::r: : .~ r::n:j:~r~:r~: ·:::::fr~:::::F::r:::r~:i:::::F:::r
::
.-----f~ t.. . t-····-!·-···-t~~--t----.<-
-4 -3 -2 -1
!-·-..-i-....i·---·t···.. t·····:-·----i·--···!··--·-t-····-~.
··J···---1----··t--···-!---·--t-····t-····t··-·-1-
: : : : : :. :: : :
;·-·---t----·:··---·:---··
Eg
51
Max mean catch number per rocangle: 1010
N
E6
~ ;::::::f:::::f::::T:::r--r·--!······i:::::r:::~r:·::j:::::l::::r:::r::::r:::r ~2
~ :f-····-t-···+····:
:..~-+-~-+-~ . : :.--.-~.-t
.. : ···+...·+.---+·-.-+-----t----·~·
: :
.: .: : • :
, : : : : : : : : ~o
44
<3
E7
4698
~itt~llij=:;:ttl=j:tl::i "
-4 -3 -2 -1
Figure 4.25
0
9
Il
11
12
13
Haddock: number per hour, age-group 2.
33
:
:
:
:
:
:
: 34
;;;4--l--+-+---+--+--i--+-+--+-+---i--+--+--+-+---i--+'
-4 -3 -2 -I
0
6
691l1l1213
Haddock, Age group 3+
E6
E7
E6
E9
Fo
F1
F2
F3
F4
F5
F6
Haddock, Age group 3 +
1993 quarter 1
F7
F6
GO
fQ
1993 quarter 2
Max moan catch numbor por rocanglo:
2650
Max moan catch number por rocanglo:
GI
2924
G2
'"
Cl
'2
40
39
36
37
-4 -3 -2 - I
91)111213
0
Haddock, Age group 3+
E7
E6
E9
Fo
FI
F2
F3
F4
F'
F6
F7
F6
356
F9
GO
0
6
Haddock, Age group 3 +
1993 quarter 3
Max moan catch numbor por rocanglo:
E6
-4 -3 -2 -1
I)
11
12
13
1993 quarter 4
Max moan catch number per recanglo: 447
GI
G2
'"
'"
Cl
Cl
44
43
....on
42
41
onCl
40
39
onon
36
...on
37
36
..,on
3'
34
33
'"on
~
~
on4--+-+--+--i--+-i--+---+-+---i--+--+-::"':':';':':':':'+':::';::"':':':';:":":':::::.jJ
on4----ic--+-+---+--t----ic--+-+---+-+----i-+-t--t--+----ic--tJ
-4 -3 -2 -1
Figure 4.26
0
6
I)
11
12
13
-4 -3 -2 -1
Haddock: number per hour, age-group 3+.
34
0
4
6
6
9
I)
11
12
13
Haddock, Age group 1 1993 quarter 1
E8
~
E7
Eo
Eo
Fo
FI
F2
F3
F~
F4
F6
F7
F8
Fo
GO
GI
Haddock, Age group 1 1993 quarter 2
G2
E8
r·····r--··-r·····-r·····r·····r-···I·····-I······r····,t"
: .•... _;_
_;
_;.....
.
_
;
E7
1
C
Eo
F1
Fo
i
1
~
,
.
i
;·.·.··;-····t----;···.·
l
.
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,
,
Ci
I
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1
F2
F3
F~
F4
j
1
1
;
.
,
,
1 ••••••\._--
~O
40
E8
' ••• __ .~_ •••• ~ •••• _" •••• _J.._ •• __ J ••_ ••• I ••• _ •• I ••••• ..I.
N
F6
F7
F8
FO
GO
GI
G2
.
:
>2
.
I
~I
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I
40
S
(······f-···
48
46
47
47
48
48
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~
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43
~
~
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41
~
40
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•
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30
38
38
37
37
38
38
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34
N
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,
I
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on
30
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,
34
33
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11
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n
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··, ., .,, .. ,, . . , .
j······t······:······t·····j---j--;---;
L.. j __ ._.L~_:
._ ••• _ •• _._._ •••• __
•
•
I
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,
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•
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,
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•
•
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F7
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,
,
,
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31
.
,
h.. i/.: : :
32
on
•••••••• - •.•••.••• _
-4
13
Haddock, Age group 1 1993 quarter 3
N
33
N
,
-3
-2
-1
,:""
__ ••••••••• .".
32
;,,:
.
0
1.1
_.• -.--_ •.•• -_ •••••••••• _
a
0
11
J)
12
31
Haddock, Age group 1 1993 quarter 4
F~
G2
F6
F7
F8
Fo
GO
GI
G2
.
,
,
~2
21
~O
40
0
'"
•
48
47
~
48
46
~
~
'"
41
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40
'"'"
38
30
'"
""~:·:-...r··:
37
~
'"
:;
'"'"
Il')
33
N
~
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....•........,;. ....
'" L::.:~::+:::J:::.:j
38
1
•
1
36
3~
25
,
34
33
N
'"
'"
32
: 31
;;;4--t--+--+--t--t--+--i--t--t--+--+--t--+--+--t--+--t'
-4
-3
-2
-I
Figure 4.27
0
II
U
12
-4 -3 -2 -1
13
Haddoek: rnean length (ern below), age-group 1.
35
II
U
12
13
Whiting. Age group 0
1993 quarter 3
Max mean catch number per recangle:
-4
-3
-2
-1
0
Whiting. Age group 0
32869
:l)
11
12
13
1993 quarter 4
Max mean catch number per recangle:
22511
-4
1D111213
-3 -2
-1
0
6
8
•
Figure 4.28
Whiling: number per hour. age-group O.
36
Whiting, Age group 1 1993 quarter 1
Whiting, Age group 1 1993 quarter 2
Max mean eateh numbor per reeanglo:
Max mean eateh numbor per rceanglo: 19102
23456
N
'"
~2
~I
c;
~o
49
0
'"
48
47
~
46
4~
:1
44
43
"
~
42
41
'"
~
40
39
~
~
38
•
...
37
~
36
3~
'"
~
34
33
N
~
32
31
~
-4 -3 -2 - I
0
6
9
10
11
12
31
~
~4=':::;:=:;:::'+:::::;~':';:':::::':;:=:;==+=:;:::'+-:::::;=':;:::::':;:=:;:::'=+::::~::+J
9
10
11 12
13
-4 -3 -2 - I 0
~
13
Whiting, Age group 1 1993 quarter 3
Whiting, Age group 1 1993 quarter 4
Max mean eateh number per rceangle: 10610
Max mean eateh number per reeangle:
13499
N
N
'"
'"
~2
~I
~o
49
48
•
47
41
41
40
40
39
39
38
38
37
37
36
36
3~
34
33
;;;4-....,I---i--j--i--+--t--i--~--i--+--+--i---f-:.::;:.:=+==+=:.tJ
~
~4--~-+-+--+--i--~--i--+--+-+----i--i--j--i--+----i---tJ
8910111213
6
-4 -3 -2 - I 0
Figure 4.29
-4 -3 -2 -I
Whiting: number per hour, age-group 1.
37
0
8910111213
Whiting. Age group 2 1993 quarter 1
Whiting. Age group 2 1993 quarter 2
~fnx
Max monn enteh numbor por roeanglo:
2975
-4 -3 -2 - I
Xl
..
E6
monn enteh numbor por roeangle:
E7
E8
E9
Fo
F1
F2
F3
F4
F5
F6
F7
F8
8381
F9
GO
GI
G2
oe
-4 -3 -2
-1
9
0
D
11
12
13
0
6
11
12
Whiting. Age group 2 1993 quarter 3
Whiting. Age group 2 1993 quarter 4
Max monn enteh numbor por roeanglo:
Max monn enteh numbor por roeangle:
.
E6
E7
E8
E9
Fo
FI
F2
F3
F4
F5
F6
F7
F8
2230
F9
GO
GI
13
6653
.'"
G2
oe
52
50
49
48
47
38
37
36
35
34
33
31
~
"'+--f---+-+---+--+-~I---+-+---+--+--f---+-+---+--+--f----+'
-4 -3 -2 - I
Figure 4.30
0
9
D
11
12
-4 -3 -2 - I
13
Whiting: number per hour, age-group 2.
38
0
6
89D11I213
Whiting, Age group 3 +
Whiting, Age group 3 +
J993 quarter 1
Max rnoan catch nurnbor por rocanglo:
9536
1993 quarter 2
Max moan catch numbor por rocanglo:
2744
82
80
40
46
47
46
.,
43
42
41
30
38
•
37
36
38
34
33
~
on4---I--+--+--+--t---+--t--t---+-+---+--+--1r---+-t--+--+'
-4 -3 -2 -1
0
Whiting, Age group 3 +
-4 -3 -2 -1
DUI2I3
6
Whiting, Age group 3 +
J993 quarter 3
Max rnoan catch numbor por rocanglo:
952
'"'"
0
80DU1213
1993 quarter 4
l\lax rnoan catch numbor por rocangle:
2190
-4 -3 -2 -1
D
82
81
il
•
~
::l
"-
on
'"on
on
on
.
on
'"on
'"on
;;4--t---+--t---+--t--t---t--t--+-+---I;---+-t--+-+---I--tJ
-4 -3 -2 -1
Figure 4.31
0
6
80DU1213
Whiting: number per hour, age-group 3+.
39
0
8
0
U
12
13
Whiting, Age group 1 1993 quarter 2
Whiting, Age group 1 1993 quarter 1
E6
~
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.
~
c;
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,
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,
1...... L.....~.~.:
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:
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40
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18:13:17:17:13:16
,
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: _-!._--_.!._-----
18:17:16:15:15:16:13
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8
46
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20
r····j·····
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i
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47
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46
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E7
E6
36
,
,
,
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,
M'
,
,
11
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F1
F2
F3
F4
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12
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b. iI: : :
.: ; ~ .l.. 1 32
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, ' " " , : ._:_.._._~-.---..:.._. .;.. .. _.. ~ 31
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32
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,
•
•
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-2
-1
,
11
J)
12
13
Whiting, Age group 1 1993 quarter 4
G2
F6
Fo
GO
GI
G2
N,.,...-,---,---,---,-----,----------,----,---,.-----,---~
;.
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_
:
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on.
13
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, 26
i
GO
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;
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,
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-_~----.l .._
.. l...__L31
0
Eo
--
, ~}T: ::i;!:J;';I:r:TiJ:,'
'
Whiting, Age group 1 1993 quarter 3
E6
Fo
----·-1---·--~-·····!·--··r·-····~·-····t·····-:
!
~ !-- ~ -
.....~ ... ~ .
,
~ :------:··-···:······;·-···;---·--1--···:······;-·····~
,
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,
F6
40
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:
---··f--·---l-------:------i···--·t-·····f--····
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----~_.
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F7
,
,
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F6
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--.------.------.----,
,
,
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F5
:
:
i 16 i 18 i 17 i 16 i 18 i g i 17
·····t-·_--,····--r·_···y·····,······f······,.. ···-
:'E:I'TF·']F[l::
-4
F4
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.~.;._15..
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21 , 21 , 18 , 20 , 24 ,
i-+~'i"'l''''.
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:;:
F1
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20 : 20 : 13 : 17 : g i :
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: :.~-.L~.L~?.L~..i..~.-L~-.L._ . -I---+-+-~
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,
45
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; + ; ; + + +- +-
E6
1·_····~···_·
I
:16:18:15:M:M:16:16
E7
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--···~······:····---:-··--·~···-·-i------;------
21 i 22 i 23 i ~ i 24 : ~ : 24
51
50
40
40
46
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,······:······~·-----i-·····t······;···---
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51
50
:
47
i
46
------:--- -
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30
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"
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37
"
36
34
.~"*::*:~,·····j······i······i······~······1·····t·····
----~.-
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-
-
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,
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33
33
N
"
32
32
"31
;; 4--t--t--+--+--t--+---t---.,,......-+-+--..i--..-..-..+;.-..-..~.;e-..--_..+-:.-'.._.-t.:_.._.._.-t-'. _••_••-tJ
Figure 4.32
34
.,
,
-4 -3 -2 -1
36
JJ
11
12
;; 4--t--t--+--+--t--+-+--t--+--+--+--t--+--+-..-..~..-..-..-._+-.-..-..-+'
-4 -3 -2 -I
13
Whiting: rnean length (ern below), age-group I.
40
0
JJ
11
12
13
31
Saithe, Age group 2 1993 quarter 1
Saithe, Age group 2 1993 quarter 2
Max mean catch numbor per rocanglo:
Max mean catch number per recangle: 123
305
[6
'"Cl
'"Cl
[7
.
[a
,
[9
Fo
f1
f2
. . . . .
·····-!----·-!--···T--··-T--·--r-~--!····-l·····
c;
f4
F3
H
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F7
Fa
F9
GO
GI
G2
.
-··--t--·-·-~-----~·--·-t--··-1---·-t······t·····
!
:
:.!.!
1
!.
:::::[::::::r~;::::T:::r:::r::~:r::
o
Cl
44
43
42
41
40
39
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36
...
37
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"
36
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,
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.
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,
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35
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a
0
J)
11
12
13
-4 -3 -2
-1
0
6
J)
11
Saithe, Age group 2 1993 quarter 3
Saithe, Age group 2 1993 quarter 4
Max moan catch number per rocangle: 105
Max mean catch number per rocanglo:
12
13
12
13
54
•
""
...
"
'""
"'"
;;4-"-'1---+--+--+--+-"-'1---+--+--+--+-....,--+--+--+--+-....,--+
-4 -3 -2 -1
Figure 4.33
0
6
J)
11
12
-4 -3 -2 -1
13
Saithe: number per hour, age-group 2.
41
0
6
a
J)
11
Saithe, Age group 3 +
Saithe, Age group 3 +
1993 quarter 1
1993 quarter 2
Max mean catch number per rocangle:
Max mean catch number per recangle: 427
.'"
E6
E7
E6
E9
Fo
F1
F2
F3
F4
F5
F6
F7
F6
294
F9
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G1
G2
n
n
.
n
.
.
.
n
33
n
n
32
31
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-4
-3 -2
-1
801DU1213
0
Saithe, Age group 3 +
.'" ·
····-:------:------:-----:··---;------t,·----:----E7
E6
E9
Fo
F1
F2
F3
F4
F5
F6
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459
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52
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F3
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·_---!-----t--··-t---··t----·!·-----t······t-----·
10
6
F4
11
12
13
1993 quarter 4
F5
F6
F7
F6
564
F9
GO
GI
G2
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· :,',~ ~ ~ i.', ~~.J:~~~~~~j:~~~~~J,.,~~~~J,.,~~~~~I:~~~~~j;
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I
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:
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•r-;··r----
,
6
Max mean catch number per rocangle:
G1
,
,
0
Saithe, Age group 3 +
1993 quarter 3
Max mean catch number per rocangle:
E6
-4 -3 -2 -1
,
:
:
:
:
:
:
50
: 49
' .
_·~·_--t·····+-----i-·----1------t-··_·+_·_··
<>
n
:. : e : . : .
----!------:------l----·-i·····-1-·----t---··-t----··
: : : . : . : :.:
.... r -----r------r--···r-·-·t-~_·r----_·!--~-·-f • : •
1"'--_.r··· -_.~ -~---r--: --1-- '---1--" -!._~_."! ----WAr --~- --r'---- :
······t----· f" '-r---' :'----'1
:--t---··1------t----!------t--··r---··-r-----
:; (,·_-t---
r--~-·r·"·r·---t-·--r-···l-~-··r---·-·r-·-r----r_---"t-··
;_._._... ---·!--··-t·~~-·i····--i·--·-t-~~~-t---·-f--:~·t~-~-i"·----t-----1-·
~
37
n
36
35
33
n
32
31
~
n4--i--t--+--+--+-~r--+-+--+--+--r--t--+--+--+-~r---t.l
-4 -3 -2 -1 0
5
6
6910111213
Figure 4.34
r----·t---· .
,
:~jIP~t=~:-;~i~lTtrbt~~
34
.
-·:-·--·t---·-t-·--t~---t------t--~--r~-~·~-r~----t·----r----'~
:!~I~~I:1I~§~§~}~~~I::
n
n
.
t
"'r-"-r ' '1
-4 -3 -2 -1
Saithe: number per hour, age-group 3+.
42
0
6
8910111213
1993 quarter 1
Saithe, Age group 2
Eß
E7
Eß
Eg
Fo
FI
F2
F3
F4
F'
Fß
F7
F8
Fg
GO
Saithe, Age group 2
GI
G2
E6
E7
E8
Eg
Fo
FI
F2
F3
1993 quarter 2
n
F4
F6
F7
F8
Fg
GO
GI
G2
N
N
o
o
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,
I
•
.,
,
I
.
•
•
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,
~
.
,,
:
,,
: 43 :
.
······r-··-r--·--r-·---t····1-·--·"f"····l····· .._-.. -
ö
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······f..: ····f··1-i
···.. ··i······j·~·i·~··i·~·· ······f····
.36: : : :411:43
:
II
··-··-t-_···t····_~·····~·_····i--···t····_·t·····-
~
:40: :53: :53: :39
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:
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:
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:
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:
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t
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:
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,
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I
: 42 : 45 : 42
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43
42
41
40
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33
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31
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0
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.
_ ...:......:.. :::t::r:::::::::J::::::::::::::::T:::~::::: ::
a
0
Saithe, Age group 2
1993 quarter 3
F'
.- •••••• -
-4
9DU1213
Saithe, Age group 2
33
.,
32
GI
G2
n
0
U
12
13
1993 quarter 4
F'
F6
F7
F8
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GI
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c;
:
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:
~
:39:46: .. :36:
.. -t~
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48
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46
40
3g
38
37
36
36
34
.
NI
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.
: •••••• ~ •••••• :._._~•••••
,
,
,
.
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-4 -3 -2 -I
Figure 4.35
~
33
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.
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.
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~
JJ
.
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U
12
y+.._
;; ;._..__ ~
31
~
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-4 -3 -2 -I
13
Saithe: rnean length (ern below). age-group 2.
43
+ : :. . . _ _ +.....: : :
:...... ~ ....+....~ + ... + ; ;......:....
_.~ _..
..__.:.._._.L._ ~
...+
L. :..__..:
~
.:.
:
~
i.
33
_ :
32
31
~
. ;.
.;.
1.
10
11
12
13
Norway pout, Age group 0 1993 quarter 3
Norway pout, Age group 0
Max mean catch number per recangle:
Max mean catch number per recangle:
58887
-4 -3 -2 - I
10
~
167108
l···---r-----r------r--.--r-.···r----I·-----I---··-r---"':'
52
.:.: ---··T····-~
~ r"--r"-r---- ,--···r---T-----,
~~r!NP'"
r-.-T-.:-.r-..-r.····
r'-"r-'-T'~'-'r":'~._._ ..t._...
51
50
: .--..
~ t···--·f..···· ...
4Q
r---'-r"'-r----r-----r-"": .: . : .:
: .: .
··--·r----·-r·····r··--r----r···-l-····
.
• ··---·:---·-:---·--~_··_·-t--_·--:--·_·
j-_•• _-
~
1993 quarter 4
J-'-
--·-·-r--·--t--~·-l·--~--l--·~--!·_···-t---·-··j
:;
..·;-··-·-:-····-_\····_·,···_··+····-·i------j..".--
·····~·-·
:
"on
'
:.:.:.: :.:.:.
·-t-·_--
··_--f····-i·····-1--·--t·······
,·_-_··f··..·i·--···i······t···_-: : : :.:.
: : :e:·
. :'
t · __
42
··_-~_·_·-+_·_··,,-···_·i-·_···~······
oe
on
j"j:::::J::::::j::~j-----
41
40
3Q
:~fCt+t:::
38
37
L...._
....L...
.L....
:.....-;,
: : :
,
:~it~~mI;I~];tj~rtt'j~
-4 -3 -2 - I
0
Il
11
12
13
0
8
11
12
13
•
Figure 4.36
Norway pout: number per hour, age-group O.
44
"
,
Norway pout, Age group 1 1993 quarter 1
Norway pout, Age group 1 1993 quarter 2
Max moan catch numbor por rocanglo: 31324
Max mean catch number por rocanglo: 19452
N
'"
~2
~1
46
4~
43
42
41
-4 -3 -2 -1
-4 -3 -2 -1
9IllU1213
6
0
9
6
III
U
12
13
Norway pout, Age group 1 1993 quarter 3
Norway pout, Age group 1 1993 quarter 4
Max moan catch numbor por rocanglo: 15059
Max moan catch number per rocanglo: 29897
E6
:I:EBJ~jI~!=~I::EH:B :
i
\
:
•
0
g
~
i i·
, i. i • i
····+····+-···1······1·····
!.
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+....
:
:
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• : .:
:.: •
.····_-[·····i-····-i····--t·····
:
:
I
:
:
e:
F2
F3
F4
F~
F6
F7
F8
F9
GO
Gl
G2
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49
i
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: •
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46
48
47
47
46
48
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F1
40
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..- ····+·····\··-·+····+···+·····1
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i
E7
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44
43
43
42
42
41
41
40
40
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:
:
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:
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39
38
. : : 37
37
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36
3~
34
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33
32
-4 -3 -2 -1
Figure 4.37
0
6
31
~
.,4--i---i-.:.+...::....i---i---i--t--+--t---i----i--t--i---i--t--t--tJ
"4--t-+---+-+---+-+---+-+---+-+---+-+---+-+---+-+--+'
-4 -3 -2 -1
80IllU1213
Norway pout: number per hour, age-group 1.
45
0
6
o
III
n
12
13
Norway pout, Age group 2 1993 quarter 1
Norway pout, Age group 2 1993 quarter 2
Max mean catch number per recangle: 45939
Max mean catch number per rocangle:
E6
E7
E8
EQ
Fo
F1
F2
F3
F4
F5
F6
F7
F6
FQ
co
Cl
23604
C2
43
.
.
,
,
,
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,,
,
,,
· . .
-----t-----t-.---i------t-----i
•
....,
I
•
I
•
41
40
3Q
36
36
37
37
36
35
34
.
.
33
N
33
N
32
32
31
31
-4 -3 -2 -1
0
D
6
11
12
-4 -3 -2
13
-1
D
8
6
0
11
12
13
Norway pout, Age group 2 1993 quarter 3
Norway pout, Age group 2 1993 quarter 4
Max mean catch number per rocangle:
Max mean catch number per rocangle:
]:::::r:::r::r:::T·····1"·····r·····r::::::t:::::tt:::~:r::::l::~:r:::r::r:::::]
:l
ö
8284
52
i······f····+·:··: . i ":"1'-:'+~·-i
:l
:-····~·1·····+··+···+··+····1::
8130
j:::::F:::[::::::r::~:T"~":"'~":"~"l::::::f:::::~f~:1::::::1::~::f:::::F:::f::::::
52
~ :~~·~·-t-----:----~
;~·~~~1-~~··t····-;
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·[i~~fj~EEE -_:!I!l~tEF~~::~J::~::E+::::j- ::
:
: • :.: • : • ! • !.
~ l"'~ ~ ..+ ...+-..+-..+-....
!
! ! : : :
t······'········-+·tr::T:::r:::r
. . ~....~. . .,
w,
:
:
47
~ :~.i-:::::l::~:::U:J~::j:::d:::·:::U::,f,,~,,:"i4Jzi'·;"H:::l~t::::J ::
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: •
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: 43
39
t·····
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:
I
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Figure 4.38
I
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t·····_~······~··_--+-_·_-+-----~_·-~ ~·-~--4·~~·~·~~~- -+--~-.+.~~~-~-~-~.t ~.-~-----.~-.---+.~.-+ ..~~~:'33
34
I
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36
l······l""··m·r
:····t·····t·····j······j··_·-r·····t·····t·····j
..
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tv
:~1!~mIl:J=[I=EE1=-::
r
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41
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··~··-f····-~-··~·-~·---·-t·----'
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40
:
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34
I
I
,
,
,
I
,
,
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I
I
I
,
,
,
I
I
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
: 33
j······;······r·····t·····t·····:· ; ; ' ~·-···t·····j······t··_··r·····t·····t·····~
~ + i-- i- j i..-+ +-.+" . : 32
-L.-.l--..-L--~-: --_--k:.1--__..L~ l l._.._L .L__ ~_L- __ .L----l.----L---.1 31
0d.+ +-.+
;; B-.. .
-4 -3 -2
aQIOU2213
Norway pout: number per hour, age-group 2.
46
-1
0
+
6
aQlJl12213
Norway pout, Age group 3 +
1993 quarter 1 Norway pout, Age group 3 +
Max mean catch numoor per rocangle:
3718
1993 quarter 2
Max mean catch number per recangle:
[0
N
[7
[8
[0
Fo
Fl
F2
F3
F4
F'
Fo
F7
F8
3912
Fo
GO
Gl
G2
N
'"
'"
o
'"
'"on
30
on
on
.
on
30
34
N
33
33
32
32
on
.
..
31
on4--t---+--+-......--+-_t---+-_+-......_-+-~t---+-_+---+_-+-~,.- ......
-4 -3 -2 -1
o
0
Norway pout, Age group 3 +
1993 quarter 3 Norway pout, Age group 3 +
Max mean catch number per rocangle:
1492
Max mean catch numoor per recangle:
i-----+---- . ,.....+....+---+._._.,._...
t-_···+---- _.- +--_··_j-_·_·+---·1···---t-··..
,
,.
,.
I
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:
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.··+·····+·-···1·_···'
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on
on
.
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"
1993 quarter 4
575
'"
I
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: 42
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:
41
40
30
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38
37
30
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34
33
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on
38
37
30
33
N
on
on
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;;;4-~>---+-+---+--+-~>---+--t--+-+--t--+--+--+--+----i-"""
on'+--t--+--+--t--+--t---+--t--t--+--t---+--+--t--+-~t--"""
I)
U 12 13
8
-4 -3 -2 -1 0
3
Figure 4.39
13
--+...nt------i-·...+....·+·.·..i ~o
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.L,::lmi~~·lFI~~.~]
t....--"-..,·i ,.---~-_··_~······~---·-t···__·'
......
N
~ 1::::::f:::::f:::::f:::::T--:--;--~'-:"~'T:::::f:::::~t~:j::::::j::::1:::::F::F::i ::
~ r····i··----~_···.··--t-~··t·:-·:
.er . . ·····r····;··_·-r---···r·_···;-_···
~
31
on4-~t---+--+---+--+---;t---+-+---+-+----i--+--t--+--+----i-4 -3 -2 -1 0
o I) U 12
OI)U1213
-4 -3 -2 -1
Norway pout: number per hour, age-group 3+.
47
0
80I)U1213
Norway pout, Age group 1 1993 quarter 1
E6
E7
E6
Eg
Fo
FI
F2
F3
F~
F4
F6
F7
F6
Fo
GO
GI
G2
j_·····[······[····-r·····T·····r-·--r······I······r -:-
~
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;
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:
:
._._ .. .. _
~
N
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52
~
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: 12 : 15
.. _.~ ....
+:
~._.-._~_
Norway pout, Age group 1 1993 quarter 2·
~I
~O
1
1
8 {_ + .
40
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:
~
: 12
30
38
.
37
on
36
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34
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34
33
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Norway pout, Age group 1 1993 quarter 3
-3
-2
-1
U
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12
13
Norway pout, Age group 1 1993 quarter 4
E6
N
N
'"
'"
E7
E6
Eo
Fo
FI
F2
F3
F4
F~
F6
F7
F6
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GO
GI
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43
42
41
40
30
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on
36
37
36
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on
34
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33
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-4 -3 -2 -1
Figure 4.40
IJ
11
12
:
:
:
;
33
; 32
-:--_··-:·_-_·-:·····7·····~·
:
:
:
:
IJ
11
12
: 31
;; 't--t--+--+--+---t--+-+--t----+--+--+---t----t-.-------+-.------~--.f---------t---'---'-tJ'
-4 -3 -2 -1
13
Norway pout: rnean length (ern below), age-group I.
48
13
-5'_--.L'_~
-3
·1
1
3
_ _---l...--
5
7
9
11
13
61 i
61
59~
59
.
.
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,,~
I
57-
53-
53
IBTS 1993:Quarter 2
(Bottom Temperature)
•
49-
-5
·3
·1
1
5
3
Figure 5.1
49
7
9
51
49
11
13
·5
·3
·1
3
1
5
7
I
9
I
11
13
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I
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61 ~
v
61
1
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,
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59
~
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,
r,
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·0
57 -
•
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>
55-~
()
53-
53
51%
IBIS 1993:Quarter 2
(B ottorn Salinity)
51
49
---'-~~;1
~3~~5~~7-09
-11111:13
·3
·1
49-·5
Figure 5.2
50
·5
·3
·1
1
3
5
7
I
9
11
13
I
I
61 J
61
59-
59
57~
)
55~
()
53
5r
•
IBTS 1993:Quarter 3
(B ottom Tem perature)
51
---,---t~l~
-----;3---;-5'
7
Q9-111111349
·5
·3
·1
49-
Figure 5.3
51
·5
t
·3
I
·1
I
1
I
3
7
I
I
9
I
11
13
I
I
61
59-
59
57-
•
,
>
55-·
o
53
IBTS 1993:Quarter 3
(Bottom Salinity)
49·5
51
49
13
--,.----l:----y--r----,.------,------,-----,--_----,------,
·3
·1
1
3
5
Figure 5.4
52
7
9
11
•
·5
·3
·1
1
3
5
7
I
9
I
11
13
61
59-
5r
,
>
55-~
()
53
53~
I
IBTS 1993:Quarter 4
(Bottom Temperature)
51
49~·5---,-L~I:----:::-3
--;-5~7;-o9-111111349
·3
·1
Figure 5.5
53
·5
·3
1
·1
3
\j353'
61·
5
9
I
11
13
I
I
61
0
\
59
1
.
-
~~
59
JS~
.O~
57-
57
35.0
,
)
55-·
34$
0
53·
53
51;%
49·5
·3
·1
1
3
5
Figure 5.6
54
IBTS 1993:Quarter 4
(Bottom Salinity)
51
9
49
13
7
11