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Thornback ray (Raja clavata) in divisions 7.a and 7.f-g (Irish Sea, Bristol Channel, Celtic Sea North)
Species:
Stock Assessment Graphs
Stock code:
rjc.27.7afg
Assessment Year:
2020
Key:
13888
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F
Fishing pressure units
Stock size description
B_index
Stock size units
Kilograms per hour
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
F
MSY
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
1993
0.413465781039122
1.25908201574228
2.10469825044543
1994
0.63622310148291
1.37906810506424
2.12191310864556
1995
1.01555101869268
2.17072385677604
3.32589669485941
1996
0.88840333836426
1.73684622093601
2.58528910350775
1997
0.673410024004365
1.71540462507582
2.75739922614728
1998
1.1887271850968
2.22971945472269
3.27071172434858
1999
0.964059960464536
1.87297744371327
2.78189492696201
2000
0.485838126889403
1.16684895369459
1.84785978049978
2001
0.87187231397991
1.8853662672755
2.89886022057109
2002
1.02025455739767
1.82173610649927
2.62321765560088
2003
1.09208441586155
2.04964926845302
3.0072141210445
2004
0.884130761842763
4.3672541591587
7.85037755647463
2005
0.893344433788855
1.68776866892659
2.48219290406433
378.51421
2006
0.806923364003368
1.81183515784929
2.81674695169522
263.54464
2007
0.740072829193358
1.46842187492561
2.19677092065786
238.08929
2008
1.05079932495056
2.05620693566884
3.06161454638711
713.1906
2009
1.62099099226411
2.61617852446488
3.61136605666566
671.023485
2010
1.62204003971039
2.58079125258719
3.53954246546399
780.40944
2011
1.04531741403541
1.79463479526015
2.54395217648489
944.411055
2012
1.22966112433634
1.92907724870413
2.62849337307193
1164.673202
2013
2.1004684638374
3.25587642884715
4.4112843938569
1047.538024
2014
2.14405489138188
3.4214251798115
4.69879546824112
789.656892
2015
1.25747412558516
2.1751071033286
3.09274008107204
902.772895
2016
2.97200526590177
4.6353006356779
6.29859600545403
861.04457
2017
3.69235371460706
5.47032485227776
7.24829598994847
877.760847
2018
4.41007716869564
6.79072156329109
9.17136595788654
840.250727
2019
4.76673558679735
6.95880770256075
9.15087981832416
959.579692
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5
Custom fish data column names
Custom fish data
Sensivity data