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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:
2024
Key:
18941
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F/Fmsy
Fishing pressure units
ratio
Stock size description
TSB/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
1.29507758259666
2.38853364552421
3.7059766051876
4499
6427
1928
0.368903131739806
0.654012367999577
1.10310218562764
1986
1.08357062892981
1.64279250721846
2.2367823857218
2858
4051
1193
0.326350319116595
0.522471053314378
0.766679784020442
1987
1.10439983517761
1.55225846583123
2.04212703729862
4614
6488
1874
0.547219129603611
0.915006787918258
1.30939115891416
1988
1.02184649930688
1.42449601505076
2.00666728281867
5212
7273
2061
0.621571535679219
1.13934126458755
1.64885526029542
1989
0.827775498827217
1.15771946796304
1.57572282926356
3451
4778
1327
0.499618346376587
0.862803522802866
1.25398287189603
1990
0.749662567653682
1.05992144673725
1.42674763889449
3047
4187
1140
0.469896151938732
0.810045410963182
1.19534656009338
1991
0.701654875000715
0.998269868939869
1.3048570772668
3310
4514
1204
0.556522822236003
0.932100592824287
1.42383555154818
1992
0.721391352070531
1.04900583537142
1.36650524118077
3574
4837
1263
0.569638716198233
0.959980871384451
1.43393680895288
1993
0.793438672400416
1.12229616267581
1.52847523707315
3802
5107
1305
0.548877388306639
0.957423126097399
1.41407750926723
1994
0.823185086938371
1.21094808057913
1.73458184396891
3900
5200
1300
0.504066295990102
0.914816543788002
1.36152600845963
1995
0.869330080444819
1.24052595868213
1.79923450336072
4670
6181
1511
0.599374699019505
1.08681418960871
1.61855153946445
1996
0.84331341189867
1.19840072031849
1.77339312215079
5253
6902
1649
0.676395418261661
1.28324944749648
1.91526583524928
1997
0.729826249266033
1.01526152603823
1.37996238535701
4856
6334
1478
0.762386597949087
1.36442632585824
1.96831780800747
1998
0.677905207623732
0.962961630786956
1.34524429285695
4253
5507
1254
0.645304991460475
1.23109344351288
1.81382909333503
1999
0.643294444096739
0.928022557074098
1.36206968704512
3759
4833
1074
0.573345035730566
1.10695889771107
1.65958535335528
2000
0.602958397098695
0.872450259471703
1.23369062422482
3494
4460
966
0.574802177874173
1.06998314610208
1.60933416303727
2001
0.561596952241378
0.810519419719237
1.12331736848324
3571
4527
956
0.644036586353465
1.1730752924617
1.80452597362223
2002
0.567852430029601
0.832590229959084
1.19994158403618
2803
3528
725
0.461247453623585
0.861285664567076
1.33021239310201
2003
0.590670617119302
0.868733289353464
1.25456669644889
2369
2961
592
0.363127100598678
0.682268147946548
1.0387459998346
2004
0.617303597231729
0.88235360103535
1.2203664856047
2067
2566
499
0.331415774789787
0.570682749985402
0.856365351134471
2005
0.656062108834518
0.907494063605574
1.19092965715956
1527
1883
356
0.246208833909625
0.395657101845657
0.606358856216578
2006
0.767882125477928
1.03140036653418
1.32433622403228
2054
2515
461
0.296677784006733
0.476348907738935
0.732912250535508
2007
0.893685778123302
1.1984221946714
1.54087046741418
2348
2856
508
0.288983108607745
0.476020271833721
0.712194075742828
2008
0.970442002226033
1.32107872577472
1.69535723999387
2894
3496
602
0.335935505141413
0.540523809726339
0.817564629138144
2009
1.05042027797114
1.43448436341589
1.85287304630257
2871
3445
574
0.303505974764375
0.494293055642936
0.733322517858486
2010
1.10581388742318
1.45922238085867
1.90168732007152
3197
3811
614
0.327864082326523
0.540667651563778
0.773474864522611
2011
1.10016145029755
1.48537999606542
1.90666814172022
2738
3264
526
0.281779187995545
0.450981780459384
0.647929833706797
2012
1.22836931420268
1.62516028767236
2.12969939001266
2524
2973
449
0.240569167096293
0.378287146156643
0.542762871277485
2013
1.37058017981153
1.8522441567627
2.51569021579178
2737
3064
327
0.221780176428547
0.35171597937764
0.515250836336125
2014
1.37101956679735
1.84570437106892
2.44836270495631
2500
2809
309
0.195576590815598
0.32171101601858
0.464971864272392
2015
1.28457849215701
1.69517674922474
2.17487329443443
2340
2499
159
0.198916502676324
0.303797779753778
0.438015845423677
2016
1.38609303111237
1.78947782143261
2.27837371142426
2744
2911
167
0.215966288870658
0.340186024267137
0.478243419600049
2017
1.4302276337029
1.93217270721775
2.61065228731845
2594
2787
193
0.189342262778471
0.30759871969656
0.446316048208558
2018
1.33901360454535
1.73032825793626
2.20884535038505
3087
3342
255
0.260956473495989
0.40430715254559
0.574535247350945
2019
1.19216242216204
1.58611652760986
2.00796378044147
3197
3381
184
0.286768476935963
0.440727392930499
0.631586362732276
2020
1.17403881162164
1.59154018330149
2.11899092814706
3315
3529
214
0.289395895052921
0.4611957035323
0.666627215427576
2021
1.19524482591041
1.56576528801627
2.0044416605515
3603
3803
200
0.316801536378785
0.505499662369172
0.72950989995617
2022
1.12460369899075
1.54605600669905
2.00533585676029
2420
2507
87
0.204499603755027
0.331272096449307
0.495316835884691
2023
1.09044407407984
1.47439645129886
1.89816047110184
2352
2466
114
0.213479938467761
0.337897364755021
0.510400435715569
2024
0.981684076537347
1.48136173482888
2.02770461418398
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data