Advice and Scenarios Database



Haddock (Melanogrammus aeglefinus) in Division 7.a (Irish Sea)
StockCode
had.27.7a
Assessment Year
2019
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
12969
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.4784






Catch scenarios


Basis
Total catch
Wanted catch*
Unwanted catch*
Ftotal
Fwanted
Funwanted
SSB
% SSB change**
% Advice change^
2020 2020 2020 2020 2020 2020 2021 2021 2021
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
EU MAP ^^: FMSY 3156 2667 489 0.28 0.19 0.086 10493 -26 -15.6
F = MAP FMSY lower 2333 1975 358 0.2 0.14 0.061 11317 -20 -38
F = MAPFMSYupper 3830 3232 598 0.35 0.24 0.11 9824 -31 2.4
Other scenarios
F = 0 0 0 0 0 0 0 13678 -3.4 -100
Fpa 4106 3463 644 0.38 0.26 0.12 9550 -33 9.8
Flim 5141 4324 817 0.5 0.35 0.15 8533 -40 38
SSB2020 = Blim 11133 9142 1991 1.64 1.14 0.5 2994 -79 198
SSB2021 = Bpa 9788 8099 1690 1.28 0.89 0.39 4160 -71 162
SSB2021 = MSYBtrigger 9653 7992 1661 1.24 0.86 0.38 4281 -70 158
F = F2019 2887 2441 446 0.25 0.18 0.07 10762 -24 -23




Symbol Footnotes
* “Wanted” and “unwanted” catch are used to describe fish that would be landed and discarded in the absence of the EU landing obligation, based on discard rate estimates for 2016–2018.
** SSB 2021 relative to SSB 2020.
^ Advice value for 2020 relative to advice value for 2019 (3739 tonnes).
^^ EU multiannual plan (MAP) for the Western Waters (EU, 2019)