NOT TO BE CITED WITHOUT PRIOR
REFERENCE TO THE AUTHOR(S)
Fisheries Organization
Northwest Atlantic
NAFO SCR Doc. 98/48
Serial No. N3039
SCIENTIFIC COUNCIL MEETING - JUNE 1998
Results From the 98 Spanish Bottom Trawl Survey in the NAFO
Regulatory Area for Divisions 3NO
by
P. Duran' X. Paz 1 , and E. de Cardenas 2
1 Institute Espanol de Oceanografia. P.O Box 1552, Vigo, Spain
2 Instituto Espanol de Oceanografia. Madrid, Spain
As the previous years a stratified-random bottom trawl survey was performed in
NAFO Regulatory Area (Divisions 3NO) during 6 th to 28 th May. The survey, witch
covered offshore areas on the Grand.Bank, was conducted following the same procedures and
the same vessel and gear of the 1995-97 surveys (Paz, et al, 1995; 1996, 1997). The area and
strata to be covered by the survey were based on the stratification charts and tables in Bishop
(1994).
In 1998, the area covered was extended until 800 fathoms including the new strata:
755, 759, 763, 767. A total of 124 successful fishing sets were completed, 101 in Div 3N and
23 in Div 30 (Figure 1).
At touchdown of the net a standard 30 minutes tow started at a mean speed of 3
knows. Trawls with net damage were excluded from analysis. From each set, catch numbers
and weights for main species along with length frequency from American plaice, Greenland
halibut, witch flounder, yellowtail flounder and cod. Otoliths were collected from American
plaice, Greenland halibut, cod and roughead grenadier.
The catch weight by tow distribution for American plaice, yellowtail flounder,
Greenland halibut, witch flounder and cod appears in the figures 2 to 6. The catches of the
five species considered: American plaice, yellowtail flounder, Greenland halibut, witch
flounder and cod are increasing this year and their value indices estimates resulted greater.
In the figure 7 appears the comparison between abundance and biomass indices for the four
years considering only the strata covered in 1995 and in the figure 8 we compare three
years considering the area covered in 1996, depth of the strata until 110 m.. Here the
indices are referred to an area greater than in the figure 7. The abundance and biomass
indices by strata for these species are presented in the tables 1 to 5 respectively, and their
length distribution by sexes in tables 6 to 10 respectively. Cod length distribution (table 10)
is given for both sexes combined.
REFERENCES -2
Bishop, C.A..1994. Revisions and additions to stratification schemes used during research
vessels surveys in NAFO Subareas 2 and 3. NAFO SCR Doc 94/43, Serial N 2413,
23p.
Paz, J.; J. Martinez and E. De Cardenas, 1995. Preliminary Results from the 95 Spanish
Bottom Trawl Survey in the NAFO Regulatory Area for Divisions 3NO. NAFO SC R
Doc 95/55, Serial N 2568, 9p.
Paz, J.;P. Duran and E. De Cardenas. 1996. Preliminary Results from the 96 Spanish Bottom
Trawl Survey in the NAFO Regulatory Area for Divisions 3NO. NAFO SC R Doc
96/49, Serial N 2725, 12p.
Paz, J.;P. Duran and E. De Cardenas. 1997. Preliminary Results from the 97 Spanish Bottom
Trawl Survey in the NAFO Regulatory Area for Divisions 3NO. NAFO SC R Doc
97/25, Serial N 2856, 13p
Table 1.- American plaice abundance and biomass indices by strata in the 1998
Spanish spring bottom trawl survey in Div. 3NO.
Estrata
Area
Number
of hauls
Area
trawled
Catch
(number)
Catch
(Kg)
Abundance
(,000)
Biomass
(t)
353
354
355
356
357
358
359
360
374
375376
377'
378
379
380
381
382
721
722
723
724
725
726
727
728
752
753
754'
755
756
757
758
759
760
761
762
763
764
765
766
767
TOTAL
269
246
74
47
164
225
421
2783
214
271
1334
100
139
106
96
144
343
65
84
155
124
105
72
96
78
131
138
180
385
101
102
99
127
154
171
212
261
100
124
144
158
10342
4
3
2
2
2
3
6
25
3
3
10
2
2
3
2
2
3
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
124
0.05
0.04
0.02
0.02
0.02
0.02
0.07
0.26
0.04
0.03
0.09
0.02
0.01
0.04
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.02
0.01
1.22
7817
8820
1871
215
33
150
8963
19074
90
120
4624
581
85
86
41
258
161
102
32
133
155
4
49
174
383
1024
2597
41
8
2899
1323
47
0
88
45
0
1
4
0
0
0
62098
3447.0
3680.7
866.2
91.5
15.0
64.9
3832.2
8645.4
38.6
57.2
2666.9
303.5
33.6
25.6
10.9
54.1
42.0
49.4
12.8
64.6
69.7
2.0
19.0
58.0
100.2
321.3
945.4
17.2
2.5
1284.9
529.0
25.9
0.0
51.7
22.3
0.0
0.5
1.6
0.0
0.0
0.0
27453
45219
60908
6257
457
226
1429
54100
207258
547
941
66322
2541
985
255.
350
1624
2414
328
267
884
932
47
377
718
1448
5861
16478
351
148
13012
6544
443
0
635
373
0
13
18
0
0
0
500711
19940.7
25416.2
2897.1
194.4
102.5
618.2
23130.6
93939.1
234.3
449.3
38254.2
1326.8
389.2
76.2
93.0
340.6
629.8
158.6
106.2
430.7
419.0
24.3
145.9
239.5
378.9
1840.0
5998.4
147.4
46.7
5767.8
2616.1
244.2
0.0
372.5
184.9
0.0
6.0
7.4
0.0
0.0
0.0
227166.6
Standard error:
3999
4293
-4-
Table 2.- Yellowtail flounder abundance and biomass indices by strata in the 1998
Spanish spring bottom trawl survey in Div. 3NO.
Estrata
Area
Number
of hauls
Area
trawled
Catch
(number)
Catch
(Kg)
Abundance
(,000)
Biomass
(t)
353
354
355
356
357
358
359
360
374
375
376
377
378
379
380
381
382
721
722
723
724
725
726
727
728
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
TOTAL
269
246
74
47
164
225
421
2783
214
271
1334
100
139
106
96
144
343
65
84
155
124
105
72
96
78
131
138
180
385
101
102
99
127
154
171
212
261
100
124
144
158
10342
4
3
2
2
2
3
6
25
3
3
10
2
2
3
2
2
3
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
124
0.05
0.04
0.02
0.02
0.02
0.02
0.07
0.26
0.04
0.03
0.09
0.02
0.01
0.04
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.02
0.01
1.22
313
29
1
0
0
0
9
123789
3
306
41721
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
166170
146.2
10.9
0.8
0.0
0.0
0.0
3.1
27955.2
0.4
111.0
8352.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
36579.7
1813
201
3
0
0
0
54
1345060
16
2401
598447
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1947995
845.9
75.3
2.5
0.0
0.0
0.0
18.7
303755.3
2.4
871.9
119803.2
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
425375.3
Standard error:
2922115485
-5
Table 3.- Greenland halibut abundance and biomass indices by strata in the 1998
Spanish spring bottom trawl survey in Div. 3NO.
Estrata
Area
Number
of hauls
Area
trawled
353
354
355
356
357
358
359
360
374
375
376
377
378
379
380
381
382
721
722
723
724
725
726
727
728
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
TOTAL
269
246
74
47
164
225
421
2783
214
271
1334
100
139
106
96
144
343
65
84
155
124
105
72
96
78
131
138
180
385
101
102
99
127
154
171
212
261
100
124
144
158
10342
4
3
2
2
2
3
6
25
3
3
10
2
2
3
2
2
3
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
124
0.05
0.04
0.02
0.02
0.02
0.02
0.07
0.26
0.04
0.03
0.09
0.02
0.01
0.04
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.02
0.01
1.22
Catch
(number)
306 I
367
12
332
902
441
83
57
7
0
0
3
74
393
362
67
6
1115
1376
523
567
122
2334
874
5402
3523
1081
341446
11695
3093
1286
1330
1391
2111
1036
761
727
927
398
138
46009
Catch
(Kg)
Abundance
(,000)
Biomass
(t)
59
76.4
6.2
91.9
181
76
14.5
9.7
1.5
0
0
0.6
14.3
60.8
53.4
15
1.2
254.6
535.2
114.6
180.9
22.3
602.4
168.1
1232.6
1168.2
717.8
373.1
410.9
4742.9
2052.3
1132.3
1038.2
708.7
991.3
823.5
754.5
459.2
491.7
448.6
220
20305.4
1771
2536
40
704
6163
4198
501
619
42
0
0
13
858
1169
3091
422
90
3580
11420
3490
3406
1485
17928
3609
20428
20173
6862
2920
8320
52499
15298
12129
7902
10022
17500
23425
9131
3340
11789
2994
2005
293873
341.3
527.6
20.7
195.2
1236.8
723.8
87.5
105.4
9.1
0.0
0.0
2.6
165.6
180.9
455.7
94.4
18.0
817.2
4440.2
764.0
1087.6
271.5
4626.4
694.1
4661.5
6690.0
4554.3
3198.0
7670.1
21290.4
10149.6
10676.0
6168.5
5106.0
8218.8
18622.1
9054.0
2111.3
6253.4
3377.7
3196.3
147863.6
Standard error: 24434064
-6-
Table 4.- Witch flounder abundance and biomass indices by strata in the 1998
Spanish spring bottom trawl survey in Div. 3N0.
Estrata
Area
Number
of hauls
353
354
355
356
357
358
359
360
374
375
376
377
378
379
380
381
382
721
722
723
724
725
726
727
728
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
TOTAL
269
246
74
47
164
225
421
2783
214
271
1334
100
139
106
96
144
343
65
84
155
124
105
72
96
78
131
138
180
385
101
102
99
127
154
171
212
261
100
124
144
158
10342
4
3
2
2
2
3
6
25
3
3
10
2
2
3
2
2
3
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
124
Area
trawled
0.05
0.04
0.02
0.02
0.02
0.02
0.07
0.26
0.04,
0.03
0.09
0.02
0.01
0.04
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.02
0.01
1.22
Catch
(number)
Catch
(Kg)
Abundance
(,000)
Biomass
(t)
48
761
1295
415
12
13
130
31
0
0
2
0
1
34.6
326.6
484.7
156.7
4.8
7.9
84.6
24.4
0.0
0.0
1.9
0.0
1.0
5.0
0.4
0.0
0.0
177.7
137.3
30.0
40.7
2.2
24.8
2.3
12.8
18.5
49.0
2.2
0.0
70.5
199.5
11.8
1.2
175.2
220.3
0.0
0.7
139.9
67.1
14.8
6.3
2537.46
278
5252
4332
881
80
124
785
336
0
0
29
0
11
24
9
0
0
2222
5657
453
739
132
846
20
271
309
675
26
0
960
2970
599 .
6
3785
5374
0
24
2319
3589
384
305
43807
200.2
2255.3
1621.1
332.9
32.8
75.2
510.6
265.3
0.0
0.0
27.3
0.0
11.6
14.9
3.5
0.0
0.0
570.4
1139.1
200.0
244.7
26.8
190.5
9.5
48.4
105.9
310.9
18.9
0.0
316.5
986.6
111.3
7.3
1262.3
1826.5
0.0
8.3
643.2
853.4
111.4
91.5
14434.1
1
0
0
692
682
68
123
11
110
5
72
54
106
3
0
214
601
64
1
525
648
0
2
504
282
51
21
7555
Standard error 588675
-7-
Table 5.- Cod abundance and biomass indices by strata in the 1998 Spanish spring
bottom trawl survey in Div. 3NO.
Estrata
Area
Number
of hauls
Area
trawled
Catch
(number)
Catch
(Kg)
Abundance
(,000)
Biomass
(t)
353
354
355
356
357
358
359
360
374
375
376
377
378
379
380
381
382
721
722
723
724
725
726
727
728
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
TOTAL
269
246
74
47
164
225
421
2783
214
271
1334
100
139
106
96
144
343
65
84
155
124
105
72
96
78
131
138
180
385
101
102
99
127
154
171
212
261
100
124
144
158
10342
4
3
2
2
2
3
6
25
3
3
10
2
2
3
2
2
3
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
124
0.05
0.04
0.02
0.02
0.02
0.02
0.07
0.26
0.04
0.03
0.09
0.02
0.01
0.04
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.01
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.02
0.01
0.02
0.02
0.02
0.01
0.02
0.02
0.01
0.02
0.01
1.22
1
108
125
23
36
30
3
11
0
6
8
10
23
67
40
3
2
3
0
24
5331
92
30
43
9
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
6030
0.0
151.5
154.6
35.6
42.6
38.2
6.7
15.8
0.0
6.7
5.6
10.8
19.8
71.2
13.3
1.2
2.7
3.5
0.0
25.1
8509.5
88.2
27.1
15.2
8.8
0.0
0.0
0.0
0.0
1.8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
9255.6
6
.746
418
49
246
285
18
117
0
47
112
44
265
199
341
19
29
10
0
160
32052
1120
230
178
34
0
0
0
0
9
0
0
0
0
0
0
0
0
0
0
0
36735
0.1
1046.1
517.1
75.6
291.1
363.8
40.4
171.9
0.0
52.6
80.9
47.2
229.4
211.9
113.5
7.6
40.6
11.2
0.0
167.3
51160.1
1073.7
208.1
62.8
33.3
0.0
0.0
0.0
0.0
8.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
56014.7
3150
5371
Standard error:
-8Table 6.- Length distribution of American plaice
Frecuency % o
Length
groups (cm)
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
TOTAL
N° Ind. Sampled
N° Samples
Total catch
Sampled catch
Total hauls
Males
0.02
0.02
1.1
0.2
1.3
4.4
15.3
24.6
45.4
60.4
55.6
42.1
24.0
12.4
4.0
2.3
0.6
0.6
0.1
0.0
0.0
0.3
0.0
0.0
0.0
0.0
0.0
0.0
0.0
294.6
4640
108
27453
27383
124
Females
0.02
0.0
0.7
0.5
0.9
3.6
12.7
21.9
31.3
40.9
60.3
96.8
113.1
105.7
78.8
53.7
36.5
20.2
13.4
5.9
2.5
1.7
1.3
1.2
1.2
0.3
0.3
0.1
0.2
705.4
7390
Combined
0.03
0.02
1.8
0.7
2.1
7.9
27.9
46.4
76.7
101.3
115.9
138.9
137.1
118.1
82.8
55.9
37.1
20.8
13.5
5.9
2.5
1.9
1.3
1.2
1.2
0.3
0.3
0.1
0.2
1000.0
12030
-9-
Table 7.- Length distribution of yellowtail flounder
Frecuency Vo o
Length
groups (cm)MalesFemaleslndeterm.Combined
0.01
10
0.0
0.0
0.01
12
0.0
0.0
0.3
0.3
14
0.2
0.1
0.1
0.0
16
1.1
0.0
2.3
1.2
18
8.2
13.4
5.2
0.0
20
20.9
9.8
11.1
0.0
22
32.3
26.0
0.0
58.3
24
64.6
53.7
0.0
118.4
26 .
210.3
114.7
95.6
0.0
28
96.9
0.0
201.4
104.5
30
57.7
157.0
99.3
0.0
32
28.7
58.9
0.0
87.6
34
53.2
11.0
42.2
0.0
36
5.1
28.5
23.5
0.0
38
20.8
4.8
16.0
0.0
16.6
40
2.0
14.5
0.0
42
0.1
0.0
6.1
6.0
44
0.02
0.0
3.2
3.2
46
0.0
1.1
0.0
1.1
48
0.01
0.5
0.4
0.0
TOTAL
0.3
1000.0
437.1
562.5
N° Ind. Sampled
N° Samples
Total catch
Sampled catch
Total hauls
2848
48
36580
36578
124
3693
3
6544
- 10 -
Table 8.- Length distribution of Greenland halibut
Frecuency % o
Length
groups (cm) MalesFemalesIndeterm.Combined
10
0.0
0.0
0.02
0.02
12
0.0
0.05
0.1
0.1
14
0.05
0.6
0.2
0.8
16
0.1
0.1
0.0
0.2
18
0.5
0.6
0.0
1.1
20
3.9
3.9
0.1
7.9
22
6.8
11.1
0.0
17.9
24
9.9
11.9
0.0
21.8
26
21.7
25.4
0.0
47.0
28
40.3
56.3
0.0
96.5
30
52.9
63.9
0.0
116.8
32
42.5
57.0
0.0
99.5
34
51.8
56.0
0.0
107.8
36
48.4
69.0
0.0
117.4
38
41.4
61.7
0.0
103.1
40
22.2
41.3
0.0
63.5
42
17.7
29.4
0.0
47.1
44
11.7
26.6
38.3
0.0
46
9.3
19.5
0.0
28.8
48
15.5
8.0
0.0
23.5
50
5.1
13.3
0.0
18.4
52
4.3
6.5
0.0
107
54
1.7
5.1
0.0
6.8
56
5.5
2.2
0.0
7.7
58
0.8
3.9
0.0
4.7
60
3.1
1.0
2.1
0.0
62
0.3
1.3
0.0
1.6
64
0.5
1.4
0.0
1.9
66
0.2
1.0
0.0
1.2
68
0.03
0.7
0.0
0.7
70
0.0
0.8
0.0
0.8
72
0.0
0.6
0.0
0.6
74
0.0
0.5
0.0
0.5
76
0.0
0.6
0.0
0.6
78
0.0
0.7
0.0
0.7
80
0.0
0.3
0.0
0.3
82
0.0
0.3
0.0
0.3
84
0.0
0.0
0.0
0.0
86
0.2
0.0
0.0
0.2
88
0.0
0.1
0.0
0.1
90
0.0
0.1
0.0
0.1
92
0.0
0.0
0.0
0.0
94
0.0
0.1
0.0
0.1
TOTAL
405.2
594.4
0.4
1000.0
N° Ind. Sampled
N° Samples
Total catch
Sampled catch
Total hauls
4470
84
20305
20305
124
7080
14
11564
-J1-
Table 9.- Length distribution of witch flounder
Frecuency Too
Length
groups (cm)MalesFemales Indeterm.Combined
16
0.0
0.4
0.0
0.4
18
0.0
0.1
0.0
0.1
20
0.0
0.1
1.3
1.2
4.6
22
1.5
2.8
0.3
16.7
24
7.3
9.0
0.3
26
19.5
0.1
31.4
11.7
60.1
28
0.0
27.0
33.1
83.2
30
41.4
41.9
0.0
32
50.6
50.9
0.0
101.5
34
61.7
60.5
0.0
122.3
36
78.5
147.4
68.9
0.0
141.4
38
65.3
76.1
0.0
40
40.3
68.5
0.0
108.8
42
68.2
21.1
47.1
0.0
44
12.4
27.0
0.0
39.4
46
31.2
7.4
23.8
0.0
48
4.6
16.4
0.0
21.0
50
0.6
8.1
0.0
8.7
52
0.4
6.8
0.0
7.2
54
0.3
2.2
0.0
2.5
56
0.1
2.0
0.0
2.1
58
0.0
0.6
0.6
0.0
60
0.0
0.1
0.0
0.1
TOTAL
432.1
566.5
1.4
1000.0
N° Ind. Sampled
N° Samples
Total catch
Sampled catch
Total hauls
1451
74
2537
2536
124
1914
8
3373
- 12 -
Table 10.- Cod length distribution in the 1998 Spanish spring bottom trawl
survey in Div. 3NO.
Length (cm)
Frecuency %,
12 - 14
15 - 17
18 - 20
21 - 23
24 - 26
27 - 29
30 - 32
33 - 35
36 - 38
39 - 41
42 - 44
45 - 47
48 - 50
51 - 53
54 - 56
57 - 59
60 - 62
63 - 65
66 - 68
.69 - 71
72 - 74
75 - 77
78 - 80
81 - 83
84 - 86
87 - 89
90 - 92
93 - 95
96 - 98
99 -101
102 - 104
TOTAL
1.3
1.6
0.8
0.5
1.3
4.8
7.3
5.3
5.0
13.5
24.5
80.6
119.9
122.7
179.1
150.9
95.2
69.4
32.2
21.1
28.3
8.7
10.6
7.1
0.7
7.2
0.0
0.2
0.0
0.0
0.2
1000.0
N° Ind. Sampled
N° Samples
Total catch
Sampled catch
Total hauls
967
55
9256
9256
124
- 13 -
200 m
3L
500 m
46°
30
+ +
3N
1000 m
++
- 45°
r
44°
200 mile limit
- 43°
1998
53° 52°
51° 50° '49° 48° 47°
Fig 1.- Distribution of fishing stations during 1998 Spanish
Bottom Trawl Survey in NAFO Divs. 3NO.
- 14 -
100 m
3L
200 m
500 m
1000 m
•
46°
30
- 45°
• 10
•
• \ —
-•‘
200 mile limit
•
• •
c_111-0
1998
53°
52°
51°
50°
44°
•
- 43°
9141828
49°
48°
Fig. 2.- Distribution of American plaice catches from the 1998
Spanish Bottom Trawl Survey in NAFO Divs. 3NO.
Symbols represent Catch in weight (Kg) per haul (square
root scale).
47°
- 15 -
100 m
3L
200 m
500 m
1000 m
30
46°
3N
-- 45°
50 m
-- 44°
200 mile limit
4057.6 8115.2
53° 52°
51 ° 50° 49° 48° 47°
Fig. 3.- Distribution of yelowtail flounder catches from the 1998
Spanish Bottom Trawl Survey in NAFO Divs. 3NO.
Symbols represent Catch in weight (Kg) per haul (square
root scale).
- 16 -
100 m
3L
200 m
500 m
woo m
30
46°
3N
L 45°
44°
•
1.
200 mile limit ••
;- 41
52°
10
N•
• o •
•
1998
53°
•
— • ••
sae
'l
51°
50°
•
4— 3°
0 1317.3 2634.7
49°
48°
Fig. 4.- Distribution of Greenland halibut catches from the 1998
Spanish Bottom Trawl Survey in NAFO Divs. 3NO.
Symbols represent Catch in weight (Kg) per haul (square
root scale).
47°
- 17 -
100 m
3L
200 m
500 m
1000 M
30
46°
3N
H 45°
50m
1
r 44°
i
---- +
1
!-•
•
•
•
•
•
200 mile limit
N
• -14•-•
• 0
1998
53° 52°
•7
51 ° 50° 49°
-- 43°
siT
197.7 395.5
1
48°47°
Fig. 5.- Distribution of witch flounder catches from the 1998
Spanish Bottom Trawl Survey in NAFO Divs. 3NO.
Symbols represent Catch in weight (Kg) per haul (square
root scale).
- Is -
3L
100 m
200 m
500 m
1000 n1 ,
30
46°
3N
H 45°
•
1
50 m
. •-4
\ ' ‘
1,
)--) --,\ \
• se
y , •
1 _r• ) •\
,
•
44°
-+. - L. -•)') \Ilk
•
•
•.
)•-0). )
L.'
•
)
-
7'
200 mile limit
•
_
of
0 41
- -
04251 8502
1998
1
53° 52°
51 ° 50° 49°
4 8°47°
Fig. 6.- Distribution of cod catches from the 1998 Spanish Bottom Trawl
Survey in NAFO Divs. 3NO. Symbols represent Catch in weight
(Kg) per haul (square root scale).
43°
- 19 -
American plaice. Abundance and Biomass estimated.
NAFO Divisions 3N0, 1995-98
250000 -(T200000 -4
''' "R 1 &moo -L.
§
t.. 100000 I
a50000(--1
0''
I I I
- 500000
- 400000 .,4 -,
- 300000 2 r( )
2 020
- 100000 a -a
0
19951996 (as 95) 1997 (as 95) 1998 (as 95)
Year of the Survey
0 B (Tm) —21— Num. (103)
Yelowtail flounder. Abundance and Biomass estimated. NAFO
Divisions 3N0, 1995-98
2500000
2000000 8 --,-;
-t,
1500000 Ws .1
500000
400000 I
0300000
0
1000000 r 0
g
.o =
500000< 4r,
0
200000
Em
.mo2o 100000
19951996 (as 95)1997 (as 95)1998 (as 95)
Year of the Survey
0 B (Tm) —SI— Num. (103)
Greenland halibut. Abundance and Biomass estimated. NAFO
Divisions 3NO, 1995-98
60000
20000 -
50000
40000 2 a
30000 Ir2 (4'
2
t. 15000
c
,"1loom
E
25000 m
o
20000 2 0
-5
10000 < .
i
I
o
19951996 (as 95)1997 (as 95)1998 (as 95)
Year of the Survey
OB (Tm) -49—Num. (103)
Witch flounder. Abundance and Biomass estimated. NAFO
Divisions 3NO,
1995-98
6000
2
b 4500
61 3000
E
o1500
m
0
15000
p; 6
- 10000 g -g
2
5000= 3
-¢ 90
I
19951996 (as 95)1997 (as 95)1998 (as 95)
Year of the Survey
0 Ei (Tm) —II— Num. (103)
Fig 7.- Abundance and biomass indices from Spanish survey for the main commercial species,
considering only the strata covered in 1995. NAFO Divisions 3N0,1995-1998.
-20American plaice
T 600000
250000 1 50000
1 I400000
^,200000
b.
0150000
2 a
8
0
+ 300000 4:j
2100000
200000 3 `"
a
8350000
f 100000
0
0
19961997 (as 96) 1998 (as 96)
= B (Tm) —O—Abun.(10 3)
Yellowtail flounder
450000 T
400000
,.._, 350000
el.
r 300000
in 250000
gi
0 200000
E
2 150000
in
100000
50000
0
- 2500000
- 2000000
-
a)
1500000 2
6'
is 0
17 0
1000000
c r
- —
a
500000
0
loon4 007 Me OA \ 1 0017 tee. 96)
=B (Tm) —11—Abun.(10 3)
Greenland halibut
105000 90000
C 75000
(a60000
in
'I 45000
E
30000
'CD
15000
0
T 250000
+ 200000
)
1 150000
0000 :6' -8-
Iv 100000
- 50000
1
E Z.
a
0
19961997 (as 96) 1998 (as 96)
013 (Tm) -41—Abun.(10 3)
Witch flounder
16000
45000
40000
35000
30000 c
i g- 25000 .6
20000 S ,C2
15000 4
10000
5000
0
14000
"S 12000
i10000
5,a8000
)
6000
in4000
2000
0
g
19961997 (as 96)1998 (as 96)
= B (Tm) —111--Abun.(10 3)
Fig 8.- Abundance and biomass indices from Spanish survey for the main species,
considering only the strata covered in 1996. NAFO div. 3NO, 1996-98
(1 Depth until 1100 m.