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Whiting (Merlangius merlangus) in Division 6.a (West of Scotland)
Species:
Stock Assessment Graphs
Stock code:
whg.27.6a
Assessment Year:
2020
Key:
13759
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F
Fishing pressure units
Year-1
Stock size description
SSB
Stock size units
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
F
MSY
Precautionary approach
B
lim
B
pa
F
lim
F
pa
Age and Length
Recruitment
1
F
Fish data
Year
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1978
0.2696448
4.2282091
66.301113
14668.996
19338.201
4669.205
3.341455E-06
0.008930849
23.86986
1979
0.3508714
4.0912455
47.704919
17083.612
20102.555
3018.943
3.648641E-06
0.009630006
25.416863
1980
0.3724448
3.6347701
35.472518
12819.029
14600.742
1781.713
3.425633E-06
0.009031427
23.810688
1981
0.3854722
3.2021439
26.600427
12193.828
14325.627
2131.799
3.126622E-06
0.008204559
21.529561
1982
0.474698
3.3856278
24.146881
13880.242
19365.377
5485.135
3.618619E-06
0.009465479
24.759526
1983
0.5945399
3.7015373
23.045346
15962.17
22256.326
6294.156
4.275915E-06
0.011327398
30.0076
1984
0.6521397
3.6139696
20.027575
16459.367
20476.146
4016.779
4.225684E-06
0.011437026
30.954885
1985
0.7167556
3.5049834
17.139605
12879.371
17719.598
4840.227
4.074148E-06
0.011245784
31.0415
1986
0.5480042
2.6405079
12.723046
8457.674
11126.977
2669.303
3.1312E-06
0.008768431
24.554606
1987
0.6641635
3.1521398
14.960149
11542.144
23459.918
11917.774
3.637131E-06
0.010059025
27.819728
1988
0.6931439
3.2833851
15.553217
11348.632
19481.089
8132.457
5.005604E-06
0.014060846
39.497208
1989
0.4353234
2.1031963
10.161262
7522.945
13399.416
5876.471
4.843573E-06
0.013799596
39.315785
1990
0.3973638
1.9100287
9.181032
5642.027
10172.113
4530.086
4.07571E-06
0.011559064
32.782502
1991
0.4151205
2.0204215
9.833537
6657.348
11540.708
4883.36
3.310345E-06
0.009311545
26.192099
1992
0.7716337
3.6656905
17.414075
6004.266
15252.816
9248.55
2.697411E-06
0.007503977
20.875448
1993
1.257071
6.039196
29.013387
6871.169
11630.521
4759.352
1.666871E-06
0.00462589
12.837739
1994
1.1357183
5.4493164
26.146492
5900.348
9355.246
3454.898
1.225508E-06
0.003408709
9.481209
1995
1.0810018
5.1854326
24.873881
6078.147
11848.965
5770.818
1.319525E-06
0.003677193
10.247438
1996
1.227631
5.8810658
28.173721
7157.534
15097.549
7940.015
1.52533E-06
0.004265985
11.930945
1997
1.2518147
5.9991661
28.750257
6290.728
11541.958
5251.23
1.545262E-06
0.004325996
12.110725
1998
1.1214396
5.3807484
25.817221
4627.637
13843.356
9215.719
1.5711E-06
0.004408866
12.372286
1999
1.097898
5.2458042
25.06468
4613.416
8588.459
3975.043
1.545796E-06
0.004345493
12.215916
2000
0.9209128
4.4011353
21.033471
3011.242
16296.331
13285.089
1.730692E-06
0.004905877
13.906357
2001
0.7588087
3.6334252
17.398033
2439.018
6701.614
4262.596
1.632043E-06
0.004654967
13.277052
2002
0.6718447
3.2035042
15.275018
1767.552
4618.483
2850.931
1.18458E-06
0.003351256
9.48093
2003
0.6632709
3.1515674
14.974842
1331.08488853162
3028.51084173109
1697.42595319947
9.10836E-07
0.002574379
7.276205
2004
0.5871612
2.7831796
13.192439
798.51153927077
3477.4259486869
2678.91440941613
8.908019E-07
0.00252367
7.149636
2005
0.2733142
1.3065223
6.245562
334.65892014549
1087.31912026512
752.66020011963
8.290417E-07
0.002361079
6.724259
2006
0.1944515
0.9244319
4.394796
377.82818622797
908.34905728838
530.52087106041
7.481272E-07
0.002106237
5.929786
2007
0.1613824
0.7670055
3.645362
480.72138434673
794.74823782918
314.02685348245
7.598295E-07
0.002130102
5.971518
2008
0.1278293
0.6188193
2.995693
441.39159585793
581.52973629682
140.13814043889
6.657216E-07
0.001875554
5.284045
2009
0.173527
0.8116958
3.796816
480.21086155784
891.85970946768
411.64884790984
6.038288E-07
0.001691878
4.7405
2010
0.230195
1.0541918
4.827734
337.62357325437
1325.84687622107
988.2233029667
8.466349E-07
0.002368415
6.625512
2011
0.1865856
0.8282516
3.6766
228.69932704477
474.23010814779
245.53078110302
5.505319E-07
0.001555906
4.397282
2012
0.1670859
0.7615178
3.470726
304.2816900876
1015.34027138609
711.05858129849
5.497935E-07
0.001570411
4.485669
2013
0.1762436
0.7907074
3.547466
215.71494095786
1354.49531922195
1138.78037826409
1.181696E-06
0.003376697
9.648912
2014
0.1478606
0.6655724
2.995976
180.53601681745
678.14362465339
497.60760783594
8.527174E-07
0.002437336
6.966677
2015
0.1775442
0.8065707
3.664193
223.24272231679
1058.81911247065
835.57639015386
6.604676E-07
0.001885613
5.383364
2016
0.3262567
1.4647393
6.575992
226.46449776172
1077.54047852594
851.07598076422
5.455162E-07
0.001555403
4.434844
2017
0.4186015
1.8802426
8.445531
177.9076970308
1222.39222955306
1044.48453252226
4.239771E-07
0.001208803
3.446425
2018
0.3784094
1.7090763
7.719
190.34631168852
742.16001247893
551.81370079041
3.918072E-07
0.001118452
3.192733
2019
0.1971263
0.8849186
3.972483
502.25395408177
1364.08974453225
861.83579045048
6.886002E-07
0.00196933
5.632095
2020
0.1750762
0.7848082
3.518032
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
CustomName3
CustomName4
Survey biomass
Survey biomass
Custom fish data
Year
Custom3
Custom4
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
57.2907823
50.00934867
2012
53.35589807
43.05348642
2013
54.75054362
37.26654861
2014
46.75133248
46.24265294
2015
57.15392582
61.06828619
2016
131.8878931
96.18497277
2017
148.435462
109.7833517
2018
127.7141684
43.88967777
2019
65.8827015
36.93087233
2020
Sensivity data