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Whiting (Merlangius merlangus) in Division 7.a (Irish Sea)
Species:
Stock Assessment Graphs
Stock code:
whg.27.7a
Assessment Year:
2017
Key:
8885
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F
Fishing pressure units
Year-1
Stock size description
SSB
Stock size units
tonnes
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
16300
F
MSY
0.219
Precautionary approach
B
lim
10000
B
pa
16300
F
lim
0.371
F
pa
0.225
Age and Length
Recruitment
0
F
1-3
Fish data
Year
Low Recruitment
Recruitment
High Recruitment
TBiomass
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1980
428295.4
634875.4
841455.4
61039.6647182
21929.44
32629.44
43329.44
13422
16737
3314
0.2525124
0.3727224
0.4929324
1981
186083.9
322563.9
459043.9
59606.34244971
32524.35
43090.35
53656.35
18267
21331
3064
0.3149707
0.4460007
0.5770307
1982
158627.6
285177.6
411727.6
43511.2492388
25347.83
34578.53
43809.23
17167
17969
801
0.3303658
0.4928858
0.6554058
1983
658240.7
880700.7
1103160.7
29917.51023442
14386.84
21952.64
29518.44
10577
12405
1829
0.3063311
0.5007511
0.6951711
1984
433193.8
630673.8
828153.8
37821.2625521
8812.78
14972.78
21132.78
11619
14999
3380
0.3958997
0.6138297
0.8317597
1985
337342.7
513722.7
690102.7
37034.9506865
16056.14
22714.54
29372.94
15525
18169
2644
0.5027881
0.7451881
0.9875881
1986
642843.4
870583.4
1098323.4
28815.07552695
12321.78
18153.78
23985.78
10063
12129
2066
0.3770085
0.5802885
0.7835685
1987
310627.3
474957.3
639287.3
33163.4751687
10719.93
16162.93
21605.93
10411
14270
3859
0.4156553
0.6158153
0.8159753
1988
330858.1
488278.1
645698.1
29994.02201674
14750.37
20448.57
26146.77
10245
11856
1611
0.3507049
0.5215749
0.6924449
1989
441307.5
601747.5
762187.5
26702.97117862
11783.69
16984.09
22184.49
11305
13408
2103
0.4949672
0.7316672
0.9683672
1990
392626.1
523266.1
653906.1
24500.52417607
8525.96
12680.86
16835.76
8212
10656
2444
0.4292132
0.6205732
0.8119332
1991
571583.7
686553.7
801523.7
23077.413938
10184.9
13791.4
17397.9
7348
9946
2598
0.463155
0.621965
0.780775
1992
194821.5
229804.5
264787.5
22624.92025537
9415.34
11895.34
14375.34
8588
12791
4203
0.817947
1.006027
1.194107
1993
186722
214792
242862
13353.18938456
8455.875
9982.075
11508.275
6523
9230
2707
0.6609533
0.7973633
0.9337733
1994
159329.7
184670.7
210011.7
8949.3339693
4814.811
5758.361
6701.911
6763
7936
1173
0.6785246
0.8252946
0.9720646
1995
302597.4
343300.4
384003.4
6942.185610005
3450.306
4138.936
4827.566
4893
7044
2151
0.6672191
0.8063191
0.9454191
1996
178503.3
204896.3
231289.3
7309.300436836
2346.574
2890.724
3434.874
4335
7966
3631
0.7484448
0.8803448
1.0122448
1997
148174.5
172203.5
196232.5
5403.37522675
2644.435
3121.015
3597.595
2277
4205
1928
0.6385746
0.7673746
0.8961746
1998
146344.7
168307.7
190270.7
4292.338507185
2167.946
2584.476
3001.006
2229
3533
1304
0.889257
1.069987
1.250717
1999
182838.7
209649.7
236460.7
3118.849673732
1248.942
1558.802
1868.662
1670
2762
1092
0.6941679
0.8456379
0.9971079
2000
94481.6
109784.6
125087.6
3510.023493131
1226.205
1515.725
1805.245
762
2880
2118
0.93329
1.10422
1.27515
2001
168344.9
193638.9
218932.9
2286.874333437
1106.006
1338.526
1571.046
733
1745
1012
0.7297213
0.8952413
1.0607613
2002
69523.75
80492.75
91461.75
2892.648578395
959.9
1191.53
1423.16
747
1487
740
1.022252
1.218762
1.415272
2003
103010
121095
139180
1862.461502314
996.756
1205.466
1414.176
517
996
480
0.4615831
0.6062731
0.7509631
2004
83977.93
95986.93
107995.93
2374.888229216
1026.619
1278.009
1529.399
133
1038
905
1.379381
1.672411
1.965441
2005
91592.1
106343.1
121094.1
1399.921131082
404.3059
550.8759
697.4459
125
397
272
0.3151137
0.4382437
0.5613737
2006
136252.8
155908.8
175564.8
2217.654427571
848.637
1086.157
1323.677
64
1837
1773
1.219806
1.495156
1.770506
2007
90684
104358
118032
2125.135397117
427.3239
587.2439
747.1639
35
1547
1512
0.974933
1.176623
1.378313
2008
131076.2
149762.2
168448.2
1677.8127853392
576.584
729.914
883.244
37
1206
1169
0.7657799
0.9507299
1.1356799
2009
80922.39
93394.39
105866.39
2234.1133976031
584.0055
743.2255
902.4455
39
1360
1321
0.887679
1.079439
1.271199
2010
81169.57
93122.57
105075.57
1730.781008978
669.5582
830.2582
990.9582
30
1184
1154
0.9047
1.1199
1.3351
2011
133446.2
152628.2
171810.2
1477.8676249892
476.0293
620.2893
764.5493
31
977
946
0.6742105
0.8422605
1.0103105
2012
69105.65
79944.65
90783.65
2179.637028364
541.5664
689.8764
838.1864
60
1399
1339
0.914469
1.108899
1.303329
2013
138397.5
160974.5
183551.5
1632.0124036438
675.3231
845.2731
1015.2231
33
981
948
0.4953322
0.6379022
0.7804722
2014
177665.9
202375.9
227085.9
2817.075559871
753.6421
956.5321
1159.4221
23
1974
1951
1.164274
1.434274
1.704274
2015
93678.7
111404.7
129130.7
2645.4038567278
521.3553
707.6253
893.8953
28
1549
1521
0.7040736
0.9003136
1.0965536
2016
55466.9
73817.9
92168.9
2240.3497248022
871.515
1134.145
1396.775
15
780
765
0.3895102
0.5671502
0.7447902
2017
117107
1426.14837749153
Custom reference points
Custom fish data column names
Custom fish data
Sensivity data