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Stock Assessment Graphs
Stock assessment graphs
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Norway lobster (Nephrops norvegicus) in Division 4.a, Functional Unit 9 (central North Sea, Moray Firth)
Species:
Stock Assessment Graphs
Stock code:
nep.fu.9
Assessment Year:
2018
Key:
9557
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
Harvest Rate
Fishing pressure units
%
Stock size description
UW TV index
Stock size units
millions
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
262
F
MSY
11.8
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
1993
267
345
423
1809
214
21.5
26.5
34.1
1994
526
702
878
1537
153
9.1
11.4
15.2
1995
1279
502
1996
375
465
555
1451
492
17.7
21.1
26.1
1997
207
262
317
1447
230
27.4
33.3
42
1998
228
323
418
1032
89
13.9
18.1
25.4
1999
313
400
487
1009
55
10.5
12.8
16.3
2000
288
386
484
1539
269
16.1
20.1
27.1
2001
233
345
457
1401
125
14.4
19.3
28.3
2002
400
521
642
1132
220
9.5
11.7
15.3
2003
416
730
1044
1080
70
5
7.1
12.5
2004
440
626
812
1333
272
8.1
10.5
15
2005
671
869
1067
1605
122
7.1
8.8
11.3
2006
321
445
569
1805
117
15.8
20.1
28
2007
375
531
687
1843
95
12.4
16
22.7
2008
330
481
632
1515
74
10.4
13.7
20
2009
275
415
555
1067
33
8.6
11.6
17.5
2010
291
406
521
1063
104
9
11.5
16.2
2011
211
372
533
1391
102
13.1
18.9
33.2
2012
209
299
389
866
54
10.5
13.7
19.6
2013
363
469
575
623
10
4.7
5.8
7.4
2014
241
331
421
1266
87
11.6
14.7
20.3
2015
263
347
431
816
56
7.4
9.1
12.2
2016
301
388
475
1146
95
10.3
12.7
16.3
2017
306
412
518
1119
12
8.3
10.5
14.1
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data