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Stock Assessment Graphs
Stock assessment graphs
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Four-spot megrim (Lepidorhombus boscii) in divisions 8.c and 9.a (southern Bay of Biscay and Atlantic Iberian waters East)
Species:
Stock Assessment Graphs
Stock code:
ldb.27.8c9a
Assessment Year:
2020
Key:
13594
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
4600
F
MSY
0.193
Precautionary approach
B
lim
3300
B
pa
4600
F
lim
0.57
F
pa
0.41
Age and Length
Recruitment
0
F
Fish data
Year
Recruitment
TBiomass
SSB
Landings
Catches
Discards
F
1986
71784
5163
4286
1124
1408
284
0.4499
1987
52203
7283
6014
1688
2021
333
0.4532
1988
56976
7799
6713
2223
2586
363
0.4819
1989
53453
7763
6704
2629
3037
408
0.6292
1990
40271
6702
5929
1945
2354
409
0.4617
1991
62943
6587
5722
1682
2129
447
0.3943
1992
58537
6334
5402
1916
2353
437
0.6223
1993
29434
5973
5273
1384
1822
438
0.5095
1994
47722
6352
5536
1402.63306
1919.63306
517
0.4857
1995
59203
5868
4940
1652.14742
2058.14742
406
0.6088
1996
42730
5151
4347
1097.6869
1465.6869
368
0.5545
1997
30221
4370
3823
895.594196893958
1203.59419689396
308
0.3616
1998
21349
4991
4500
1123.018
1501.018
378
0.4151
1999
36149
4516
4015
1124.74786575655
1441.74786575655
317
0.4283
2000
35842
4365
3765
1040.560968
1413.560968
373
0.4892
2001
36936
3777
3181
930.78478
1220.78478
290
0.5436
2002
39684
4104
3361
719.623077
1027.623077
308
0.4265
2003
50714
4696
3712
875.53158
1066.53158
191
0.3275
2004
36630
4954
4032
1005.9341857
1353.9341857
348
0.4506
2005
52234
4867
4037
982.760944
1357.760944
375
0.3852
2006
51142
5599
4622
1091.7805145
1426.7805145
335
0.4582
2007
37450
5412
4558
1104
1396
292
0.3692
2008
27654
5920
5255
979.8569522
1181.8569522
202
0.2782
2009
63011
5893
5184
1134.292347885
1413.292347885
279
0.304
2010
49567
6309
5644
1297.367005286
1562.367005286
265
0.2737
2011
47194
5928
5228
1127.9455069676
1396.9455069676
269
0.269
2012
68730
7424
5980
951.596891354
1320.596891354
369
0.2351
2013
43215
6311
5493
931.118959575
1427.118959575
496
0.3073
2014
66239
7014
6203
1154.3457184
1941.8957184
787.55
0.3663
2015
47575
7237
6035
1147.59391567
1744.96291567
597.369
0.4627
2016
57193
6992
6051
1086.798213591
1419.138213591
332.34
0.2526
2017
25841
7171
6283
926.4765
1172.8815
246.405
0.2467
2018
40331
6848
6403
813.72863
906.08863
92.36
0.107
2019
43332
7011
6524
742.37807
943.38407
201.006
0.1465
2020
43332
7645
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data