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Stock Assessment Graphs
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Witch (Glyptocephalus cynoglossus) in Subarea 4 and divisions 3.a and 7.d (North Sea, Skagerrak and Kattegat, eastern English Channel)
Species:
Stock Assessment Graphs
Stock code:
wit.27.3a47d
Assessment Year:
2019
Key:
12955
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F
Fishing pressure units
Year-1
Stock size description
SSB
Stock size units
tonnes
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
4745
F
MSY
0.154
Precautionary approach
B
lim
3069
B
pa
4745
F
lim
0.3
F
pa
0.2
Age and Length
Recruitment
1
F
4-8
Fish data
Year
Low Recruitment
Recruitment
High Recruitment
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1950
14871.221
26943.772
48816.896
1674.164
3504.21
7334.699
2379
0.161
0.294
0.537
1951
15645.571
27793.019
49371.92
1655.09
3456.045
7216.676
2568
0.168
0.307
0.564
1952
17464.55
30772.745
54221.944
1554.673
3297.482
6994.003
2554
0.17
0.316
0.588
1953
19797.722
34412.714
59816.723
1394.745
3048.873
6664.748
2263
0.161
0.309
0.59
1954
20970.774
36464.096
63403.97
1272.472
2843.118
6352.455
1590
0.142
0.28
0.551
1955
19681.911
35019.446
62309.073
1260.239
2842.384
6410.803
2027
0.15
0.295
0.578
1956
16341.379
29792.975
54317.407
1282.671
2870.953
6425.946
1936
0.149
0.292
0.574
1957
13227.396
24562.761
45612.092
1358.885
2981.386
6541.145
1991
0.152
0.294
0.571
1958
11797.181
21609.045
39581.559
1444.943
3113.646
6709.462
2678
0.169
0.32
0.606
1959
11577.73
20731.179
37121.419
1432.416
3070.296
6580.993
2333
0.17
0.322
0.611
1960
10807.747
19743.117
36065.859
1335.294
2919.217
6381.987
2563
0.177
0.339
0.647
1961
9517.244
17640.234
32696.217
1151.484
2621.704
5969.111
2093
0.168
0.33
0.648
1962
8564.263
15695.687
28765.415
1000.825
2351.672
5525.805
1419
0.15
0.3
0.603
1963
7835.951
14368.558
26347.209
931.273
2215.882
5272.496
1523
0.156
0.312
0.622
1964
6778.258
12766.114
24043.589
864.981
2070.337
4955.363
1760
0.17
0.338
0.671
1965
5872.521
11181.73
21290.872
765.584
1838.579
4415.414
1356
0.164
0.329
0.661
1966
5899.149
10977.716
20428.414
679.129
1640.608
3963.306
1137
0.159
0.321
0.649
1967
7161.891
12773.421
22781.735
613.239
1489.743
3619.035
1125
0.165
0.333
0.672
1968
9961.352
17221.452
29772.907
540.678
1338.098
3311.592
1174
0.172
0.351
0.718
1969
12932.549
22223.026
38187.59
460.533
1169.679
2970.796
891
0.156
0.33
0.696
1970
14541.224
25285.914
43969.988
426.779
1083.332
2749.919
597
0.134
0.288
0.62
1971
14756.909
25585.837
44361.257
469.138
1149.996
2818.985
843
0.143
0.3
0.63
1972
14462.478
25417.408
44670.396
563.826
1303.303
3012.625
908
0.146
0.299
0.612
1973
14283.291
25124.912
44195.783
700.319
1543.93
3403.76
1494
0.162
0.32
0.63
1974
14456.193
25542.452
45130.612
812.157
1732.247
3694.704
1138
0.152
0.297
0.581
1975
15523.657
27423.639
48445.798
928.718
1947.087
4082.131
1841
0.169
0.32
0.606
1976
18064.51
31599.811
55276.786
975.165
2032.293
4235.401
1496
0.163
0.306
0.577
1977
23181.274
39874.724
68589.57
1023.319
2126.704
4419.802
1618
0.165
0.306
0.568
1978
30481.289
51233.373
86113.764
1071.301
2211.532
4565.363
1664
0.166
0.303
0.556
1979
35236.29
60194.359
102830.374
1156.342
2337.031
4723.267
1572
0.161
0.291
0.527
1980
35446.336
61641.011
107193.427
1340.288
2600.46
5045.476
1883
0.166
0.291
0.51
1981
33432.807
58389.363
101975.216
1652.267
3021.962
5527.109
1933
0.167
0.283
0.479
1982
31606.74
55229.842
96509.019
2135.391
3671.234
6311.708
3155
0.193
0.307
0.491
1983
30797.934
53633.5
93400.822
2602.067
4241.837
6914.957
3606
0.207
0.318
0.489
1984
32095.646
55234.562
95055.161
2890.512
4574.186
7238.57
3903
0.215
0.324
0.487
1985
33826.12
57445.93
97558.775
3016.429
4723.757
7397.448
3979
0.218
0.323
0.481
1986
33769.189
57724.733
98674.112
3058.084
4773.648
7451.631
3579
0.212
0.313
0.463
1987
30425.673
52809.28
91660.093
3086.369
4814.297
7509.62
3700
0.211
0.311
0.457
1988
26573.894
46776.432
82337.748
3142.581
4863.616
7527.176
3290
0.204
0.297
0.434
1989
24111.204
42465.222
74790.752
3326.685
5082.732
7765.738
3841
0.21
0.302
0.434
1990
24094.31
41986.163
73164.072
3435.834
5163.361
7759.484
3862
0.21
0.299
0.425
1991
25471.927
43865.368
75540.828
3484.671
5159.609
7639.619
3641
0.205
0.288
0.406
1992
28025.065
47785.731
81479.78
3416.456
5012.9
7355.333
3164
0.193
0.271
0.381
1993
29958.069
50974.278
86733.798
3332.835
4878.533
7141.092
2673
0.181
0.255
0.358
1994
30729.263
52920.295
91136.504
3288.628
4806.558
7025.118
2696
0.179
0.253
0.356
1995
30617.782
52717.075
90767.189
3353.848
4901.414
7163.073
2810
0.181
0.255
0.36
1996
30550.091
52097.937
88844.092
3418.25
4968.618
7222.164
2790
0.185
0.261
0.368
1997
29299.083
49995.67
85312.127
3518.825
5110.854
7423.168
3494
0.205
0.288
0.406
1998
27120.421
46863.631
80979.567
3440.123
5032.284
7361.332
3786
0.225
0.319
0.452
1999
24710.714
43243.974
75677.345
3214.725
4787.686
7130.295
4024
0.247
0.354
0.506
2000
23636.846
41436.212
72639.118
2908.127
4424.006
6730.046
4422
0.273
0.394
0.568
2001
25946.685
43501.146
72932.236
2621.246
4021.225
6168.918
4206
0.292
0.418
0.598
2002
25849.267
42636.079
70324.44
2332.184
3562.283
5441.194
3812.681
5341.463
1528.781
0.305
0.43
0.606
2003
23219.178
37801.68
61542.534
2134.156
3171.009
4711.603
3307.901
3657.073
349.171
0.315
0.432
0.59
2004
18031.194
29128.905
47056.956
2010.274
2852.787
4048.399
3058.738
3428.049
369.31
0.327
0.431
0.569
2005
15330.378
24642.37
39610.66
2005.221
2691.433
3612.476
2960.375
3379.351
418.976
0.328
0.418
0.533
2006
16310.215
25432.903
39658.125
2031.181
2599.898
3327.852
2335.18
2630.859
295.679
0.303
0.376
0.468
2007
13569.987
22010.704
35701.66
2094.26
2604.872
3239.98
2271.031
2470.483
199.451
0.288
0.355
0.437
2008
30648.61
45047.71
66211.689
2047.989
2521.879
3105.423
1999.349
2316.942
317.593
0.279
0.345
0.426
2009
57508.602
82314.645
117820.647
1846.017
2303.19
2873.584
1863.351
2318.525
455.174
0.284
0.356
0.447
2010
54138.33
78252.868
113108.613
1756.361
2229.365
2829.752
1531.068
2090.389
559.321
0.245
0.313
0.4
2011
26394.919
38770.189
56947.608
2019.81
2592.123
3326.6
1567.264
2114.192
546.927
0.18
0.235
0.308
2012
19916.126
29348.857
43249.142
2583.658
3350.248
4344.29
1952.007
2506.519
554.511
0.152
0.202
0.27
2013
20230.139
30022.978
44556.253
3273.368
4320.239
5701.914
2013.302
2267.414
254.111
0.144
0.195
0.263
2014
19093.825
28851.655
43596.187
3859.087
5209.811
7033.302
2685.327
2992.196
306.868
0.159
0.216
0.294
2015
11392.894
17676.537
27425.864
3858.4
5350.023
7418.296
2240.222
2689.697
449.474
0.15
0.21
0.294
2016
5943.912
9760.831
16028.81
3799.205
5449.34
7816.19
2744.35
3134.77
390.419
0.146
0.21
0.303
2017
8759.518
14991.779
25658.196
3611.864
5472.325
8291.102
2849.893
3085.543
235.649
0.162
0.24
0.358
2018
4970.306
9678.909
18848.19
3177.238
5217.034
8566.384
3010.094
3209.182
199.087
0.152
0.237
0.372
2019
9760.831
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data