Advice and Scenarios Database



Herring (Clupea harengus) in Division 7.a North of 52°30’N (Irish Sea)
StockCode
her.27.nirs
Assessment Year
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
9352
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4492






Catch scenarios


Basis
Total catch
Ftotal
SSB *
% SSB change **
SSB*^
% TAC change ***
% Advice change ^^
2019 2019 2019 2019 2020 2019 2019
(t) (ratio) (t) (%) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 6896 0.266 21760 -2.9 22110 -1.71 -1.71
Other scenarios
F = 0 0 0 26736 19.3 32181 -100 -100
Fpa 7358 0.286 21428 -4.4 21508 4.9 4.9
Flim 9791 0.397 19682 -12.2 18485 40 40
SSB (2019) = Blim 25887 1.5 8500 -62 12404 269 269
SSB (2019) = Bpa 20935 1.05 11831 -47 15317 198 198
SSB (2019) = MSYBtrigger 20935 1.05 11831 -47 15317 198 198




Symbol Footnotes
* For autumn-spawning stocks, the SSB is determined at spawning time and is influenced by fisheries between 1 January and spawning (set for September).
** SSB 2019 relative to SSB 2018.
*** Catch 2019 relative to the TAC for 2018 (7016 tonnes).
^ SSB on 1 January 2020
^^ Advice value for 2019 relative to the advice value for 2018 (7016 tonnes).