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Stock Assessment Graphs
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Megrim (Lepidorhombus spp.) in divisions 4.a and 6.a (northern North Sea, West of Scotland)
Species:
Stock Assessment Graphs
Stock code:
lez.27.4a6a
Assessment Year:
2022
Key:
17324
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F/Fmsy
Fishing pressure units
ratio
Stock size description
B/Bmsy
Stock size units
tonnes
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
0.5
F
MSY
1
Precautionary approach
B
lim
0.3
B
pa
0.5
F
lim
F
pa
Age and Length
Recruitment
0
F
Fish data
Year
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1985
1.19931279945715
2.32707016261634
3.53626392535262
4499
6427
1928
0.383381580146899
0.675562640232231
1.16205763840935
1986
1.07821099898993
1.6366449366921
2.24568352803609
2858
4051
1193
0.332425018622353
0.531108219971773
0.770719221452187
1987
1.06877541959611
1.54279024896342
2.0464518950615
4614
6488
1874
0.579907789641904
0.930193151670372
1.3107799555556
1988
1.01683373008606
1.42919702337007
2.03821833833507
5212
7273
2061
0.652099976899628
1.15161413647166
1.65686314446115
1989
0.802335508864915
1.15089610832106
1.56416413947609
3451
4778
1327
0.503356345333547
0.877265771741099
1.27140453089903
1990
0.73954613730713
1.05431114614341
1.43276787117985
3047
4187
1140
0.474656313262483
0.824381978516398
1.22240060746602
1991
0.703423523757123
0.990542886479247
1.30371102651981
3310
4514
1204
0.590981165018494
0.950953482893506
1.39978342132684
1992
0.716769091850263
1.04256191341476
1.38464456393311
3574
4837
1263
0.580610573818092
0.978841717295894
1.46213285629216
1993
0.785826322568121
1.11514108445485
1.51041329954114
3802
5107
1305
0.569351408588346
0.973839649643596
1.42207323086967
1994
0.81265543970063
1.20562433581772
1.70459387634316
3900
5200
1300
0.525969887498191
0.927835031538602
1.31885132457766
1995
0.861802656116625
1.23631734663702
1.74815884646922
4670
6181
1511
0.592214224242676
1.10168767638539
1.57487070410364
1996
0.821319638778014
1.19222241449392
1.70897014167977
5253
6902
1649
0.683620983662461
1.30643863283846
1.90941887759767
1997
0.7185109078114
1.00428903319522
1.37368557916626
4856
6334
1478
0.780012095977974
1.39837813876051
2.0082013036476
1998
0.662672236365921
0.954417915256388
1.36507013855437
4253
5507
1254
0.671743179848775
1.26233762987744
1.85989413294734
1999
0.623389927005681
0.91806402635893
1.3585120849055
3759
4833
1074
0.585112419105513
1.13392056102754
1.69517734214865
2000
0.569583507702335
0.863514204058272
1.23792235120495
3494
4460
966
0.560293907206705
1.09846466829291
1.63677246119865
2001
0.55365813972758
0.80161907324894
1.11089527997195
3571
4527
956
0.648615847157671
1.20111718754811
1.80303594797411
2002
0.547681550809526
0.821012010357207
1.17981571407441
2803
3528
725
0.472454258526217
0.884303779069609
1.3201701544985
2003
0.581905702880725
0.856495489177298
1.21458642895091
2369
2961
592
0.371269270879296
0.699695207715515
1.06310594121597
2004
0.587133138715171
0.871137585288936
1.22353862056989
2067
2566
499
0.323105457078639
0.584575527507343
0.877513469182438
2005
0.629955792995857
0.885491168822007
1.16371755764678
1527
1883
356
0.238681256371073
0.410397767090009
0.609691419993777
2006
0.718096228613299
1.00539304393059
1.31387981035893
2054
2515
461
0.298764158558413
0.49486946923169
0.734732398500877
2007
0.820618841099552
1.15119870614953
1.47443047810788
2348
2856
508
0.30698141193593
0.499956098342539
0.733862175971819
2008
0.912394153061128
1.28216233895971
1.66488301603206
2894
3496
602
0.336131649873501
0.561569662701455
0.831463854217159
2009
1.0055423627683
1.39662819977911
1.84176391400561
2871
3445
574
0.303556478914942
0.512058338215285
0.723325048606707
2010
1.02975267873032
1.41318117680254
1.84517785692991
3197
3811
614
0.355223812792707
0.563762042290866
0.842717084988627
2011
1.02572815533981
1.45437812817569
1.90672195564953
2743
3269
526
0.294100005421511
0.467038188884989
0.683768188125691
2012
1.15618523681163
1.58458084718292
2.07614894682516
2545
3186
449
0.258832939448337
0.421480526648684
0.603588608394788
2013
1.27138571724191
1.7749627796126
2.42886234783518
2737
3064
327
0.222610223594298
0.369150642640283
0.530467358207654
2014
1.32890403180011
1.7936329357601
2.36436798609511
2500
2809
309
0.202904858047442
0.332642686049222
0.476644549516219
2015
1.20538551315592
1.66724269856127
2.17091808967111
2340
2499
159
0.207972021225574
0.311846344963207
0.441030899776163
2016
1.28235796438446
1.74750845260767
2.25968715962025
2792
2959
167
0.227228860439689
0.357638814056132
0.507225276464363
2017
1.37288976515816
1.88245526953022
2.62478605231891
2594
2788
193
0.192506755093479
0.319180307485117
0.448439418471583
2018
1.24851105602783
1.68749947463088
2.1648475721255
3003
3258
255
0.260046667937623
0.407066381993079
0.562672971432176
2019
1.11708439512279
1.55026872525409
1.9649906305783
3197
3381
184
0.291979538307287
0.454865442674962
0.64723535128923
2020
1.13109644985484
1.56476510648099
2.07218502231409
3315
3529
214
0.303555336847249
0.47392414296866
0.679647030460096
2021
1.13888692922559
1.53404263255918
1.98953565057908
3603
3804
200
0.336723656527652
0.521062432670575
0.736931293693404
2022
0.954731279178338
1.44250656633261
2.00670388609222
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data