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Stock Assessment Graphs
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Norway lobster (Nephrops norvegicus) in divisions 8.a and 8.b, Functional Units 23-24 (northern and central Bay of Biscay)
Species:
Stock Assessment Graphs
Stock code:
nep.fu.2324
Assessment Year:
2021
Key:
16875
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
HR
Fishing pressure units
%
Stock size description
UWTV_index
Stock size units
Number of individuals (fisheries)
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
F
MSY
7.7
Precautionary approach
B
lim
B
pa
F
lim
F
pa
Age and Length
Recruitment
0
F
Fish data
Year
Low SSB
SSB
High SSB
Landings
Catches
Discards
F
1987
5397.08421112537
7163.70062259165
1766.61641146628
1988
5874.69065155647
9997.20576453865
4122.51511298218
1989
4835.05880312587
7469.53131165517
2634.47250852929
1990
4971.63026328968
5598.81888631404
627.188623024367
1991
4753.98391309372
5966.61003301074
1212.62611991702
1992
5680.50017152844
7034.23574520154
1353.7355736731
1993
5109.2030465653
6115.78421157137
1006.58116500607
1994
4092.02696525003
4832.65013787502
740.623172624986
1995
4452.40358201023
5158.5351094482
706.131527437969
1996
4118.48940416988
4613.81358238914
495.324178219255
1997
3609.87466824543
4415.04020146493
805.165533219499
1998
3865.01400001255
5317.73861620875
1452.7246161962
1999
3209.32800000002
4357.14581305941
1147.81781305939
2000
3068.8426932481
4523.3860354679
1454.54334221981
2001
3729.5807659581
6267.03619450717
2537.45542854907
2002
3679.09800000069
6299.31711132488
2620.2191113242
2003
3885.62400000003
5862.90649154382
1977.28249154379
2004
3571.35510900003
5502.858278128
1931.50316912797
2005
3991.21201871073
6689.34607548302
2698.13405677229
2006
3446.59300000003
7990.2299143657
4543.63691436568
2007
3176.48174303008
5587.41049216528
2410.9287491352
2008
3030.31470537383
5153.52518548957
2123.21048011574
2009
2986.98080000002
4820.3074139996
1833.32661399957
2010
3397.72800000003
4672.65041457396
1274.92241457393
2011
3559.04520000003
4821.93825436777
1262.89305436774
2012
2519.96351274348
3532.15875432105
1012.19524157757
2013
2379.71718
3900.28340097696
1520.56622097696
2014
2806.858470158
4133.06625572008
1326.20778556208
2015
3568.7094601557
5390.96413686859
1822.25467671289
2016
3527.44803114998
4167.47703541465
4807.50603967931
4090.85157
6622.24267129603
2531.39110129602
7.25
2017
2719.95030643431
3372.53911448062
4025.12792252694
3411.75958
5798.63812815451
2386.87854815451
7.23
2018
3171.78884685413
3787.7688675331
4403.74888821207
2124.7288
3695.64102824233
1570.91222824233
4.21
2019
3440.68687758863
4113.42156033837
4786.1562430881
2154.2912
2788.59718603449
634.305986034492
3.07
2020
2751.34509796848
3601.49966468681
4451.65423140514
2272.64491
4180.8827148677
1908.2378048677
4.94
2021
2837.06713924249
3430.99206349219
4024.91698774189
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
CustomName1
CustomName2
CustomName3
CustomName4
CustomName5
CustomName6
CustomName7
Landings
Total discards
Removals
Discard rate by number
Dead discard rate by number
Mean weight in landings
Mean weight in discards
Custom fish data
Year
Custom1
Custom2
Custom3
Custom4
Custom5
Custom6
Custom7
1987
289
268.2
476.7
48.1
39.4
0.01868
0.00659
1988
324.5
687
805.4
67.9
59.7
0.0181
0.006
1989
244.9
404.2
527.8
62.3
53.6
0.01975
0.00652
1990
213.8
78.5
268.8
26.9
20.5
0.02326
0.00798
1991
217.4
151.6
323.5
41.1
32.8
0.02187
0.008
1992
274.3
174.4
396.3
38.9
30.8
0.02071
0.00776
1993
240.6
124.4
327.7
34.1
26.6
0.02123
0.00809
1994
188.9
88.3
250.7
31.8
24.6
0.02166
0.00839
1995
202.3
84.8
261.6
29.5
22.7
0.02201
0.00833
1996
182
55.3
220.7
23.3
17.5
0.02262
0.00897
1997
188.7
105
262.2
35.8
28
0.01913
0.00767
1998
161.5
151
267.2
48.3
39.6
0.02392
0.00962
1999
135.3
122.7
221.2
47.6
38.8
0.02372
0.00935
2000
133.4
163.3
247.7
55
46.2
0.02301
0.00891
2001
172.8
305.5
386.7
63.9
55.3
0.02158
0.0083
2002
180.4
329
410.7
64.6
56.1
0.02039
0.00796
2003
163.8
201.8
305.1
55.2
46.3
0.02373
0.0098
2004
154.4
222.1
309.9
59
50.2
0.02313
0.0087
2005
179.8
315.3
400.5
63.7
55.1
0.0222
0.00856
2006
128.8
487.3
469.9
79.1
72.6
0.02676
0.00932
2007
117.3
214.8
267.6
64.7
56.2
0.02709
0.01122
2008
115.3
198
253.9
63.2
54.6
0.02629
0.01072
2009
123.5
174.5
245.6
58.6
49.7
0.02419
0.01051
2010
138.1
113.5
217.6
45.1
36.5
0.0246
0.01123
2011
108
121.6
193.1
53
44.1
0.03295
0.01039
2012
101.4
117.9
184
53.8
44.9
0.02485
0.00858
2013
114.9
154.9
223.3
57.4
48.6
0.02072
0.00982
2014
121.6
117.9
204.1
49.2
40.4
0.02308
0.01125
2015
138.9
156.4
248.4
53
44.1
0.02569
0.01165
2016
161.4
201
302.1
55.5
46.6
0.02535
0.0126
2017
143.5
200.6
243.8
58.3
41.1
0.02378
0.0119
2018
83.5
151.9
159.4
64.5
47.6
0.02546
0.01034
2019
96.9
59.1
126.5
37.9
23.4
0.02223
0.01073
2020
100.7
154.4
177.9
60.5
43.4
0.02257
0.01236
2021
Sensivity data