Advice and Scenarios Database



Herring (Clupea harengus) in Division 7.a North of 52°30’N (Irish Sea)
StockCode
her.27.nirs
Assessment Year
2024
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19281






Catch scenarios


Basis
Total catch
F2-4
SSB*
SSB*, ^
SSB change**
advice change^^
2025 2025 2025 2026 2025 2025
(t) (ratio) (t) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY* SSB(2024)/ MSY Btrigger 5223 0.349 10677 10136 -4.6 8.3
Other scenarios
F=0 0 0 14583 17649 30 -100
F=Fpa=FMSY 5230 0.35 10672 10127 -4.6 8.5
F=Flim 6411 0.45 9786 8780 -12.5 33
F=Fsq 6523 0.46 9703 8654 -13.3 35
SSB (2025)=Blim 11440 1.03 6080 4173 -46 137
SSB (2025)=Bpa 7421 0.54 9023 7709 -19.4 54
SSB (2025)= MSYBtrigger 4557 0.3 11208 10945 0.1 -5.5




Symbol Footnotes
* For autumn-spawning stocks, the SSB is influenced by fisheries between 1 January and spawning (set for September).
** SSB 2025 relative to SSB 2024.
^ Assuming the same F in 2026 as in 2025.
^^ Advice value for 2025 relative to the advice value for 2024 (4821tonnes).