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Stock Assessment Graphs
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Norway lobster (Nephrops norvegicus) in Division 4.a, Functional Unit 7 (northern North Sea, Fladen Ground)
Species:
Stock Assessment Graphs
Stock code:
nep.fu.7
Assessment Year:
2017
Key:
9248
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
Harvest Rate
Fishing pressure units
%
Stock size description
Abundance
Stock size units
1000 million individuals
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
2.767
F
MSY
7.5
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
Discards
Low F
F
High F
1992
3.285
3.661
4.037
3363
2.8
3.1
3.5
1993
3.881
4.45
5.019
3492
2.7
3.1
3.6
1994
5.356
6.17
6.984
4568
2.8
3.1
3.6
1995
4.091
4.987
5.883
6419
4
4.7
5.7
1996
5210
1997
2.257
2.767
3.277
6170
5.9
7
8.5
1998
3.121
3.838
4.555
5136
3.6
4.3
5.3
1999
3.497
4.146
4.795
6518
4.4
5.1
6.1
2000
3.137
3.628
4.119
5570
340
4.1
4.7
5.4
2001
4.011
4.981
5.951
5542
687
4.3
5.1
6.3
2002
5.33
6.087
6.844
7245
820
4.4
4.9
5.6
2003
4.471
5.547
6.623
6294
349
3.4
4.1
5.1
2004
4.695
5.725
6.755
8730
506
4.5
5.4
6.5
2005
3.663
4.325
4.987
10684
823
8.1
9.3
11
2006
4.243
4.862
5.481
10791
798
7.5
8.4
9.6
2007
6.287
7.017
7.747
11911
747
6.3
7
7.8
2008
6.341
7.36
8.379
12239
257
5.3
6.1
7.1
2009
4.685
5.457
6.229
13327
707
8.2
9.4
10.9
2010
4.513
5.224
5.935
12968
560
8.7
9.9
11.5
2011
2.947
3.382
3.817
7559
0
5.5
6.2
7.1
2012
2.356
2.748
3.14
4415
0
4.1
4.7
5.4
2013
2.567
2.902
3.237
2951
0
2.7
3.1
3.5
2014
2.578
2.99
3.402
4148
37
3.1
3.5
4
2015
2.249
2.569
2.889
1784
0
1.8
2
2.3
2016
3.787
4.449
5.111
2399
0
1.2
1.4
1.7
2017
6.068
7.036
8.004
Custom reference points
Custom fish data column names
Custom fish data
Sensivity data