Advice and Scenarios Database



Herring (Clupea harengus) in divisions 7.a South of 52°30’N, 7.g-h, and 7.j-k (Irish Sea, Celtic Sea, and southwest of Ireland)
StockCode (Assessment Component)
her.27.irls
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19403
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202638.v1






Catch scenarios


Basis
Total catch
F2–5
SSB*
% SSB change**
SSB* #
% TAC change***
% advice change^
2026 2026 2026 2026 2027 2026 2026
(t) (ratio) (t) (%) (t) (%) (%)
ICES Basis Advice
MSY approach: zero catch 0 0 21846 -2 21832 -100
Other scenarios
FMSY 5081 0.26 19423 -12.9 16285 484.7
FMSY×SSB2025/MSYBtrigger 2247 0.11 20808 -6.7 19292 158.6
F=0 0 0 21846 -2 21832 -100
Fpa 5081 0.26 19423 -12.9 16285 484.7
SSB2026=Blim^^
SSB2026=Bpa^^
SSB2026=MSYBtrigger^^
F=F2025 886 0.041 21443 -3.8 20815 2
TAC=monitoring TAC 869 0.04 21451 -3.8 20806 0




Symbol Footnotes
* For this autumn- and winter-spawning stock, the SSB is determined at spawning time (October) and is influenced by fisheries between 01 April and spawning.
** SSB 2026 relative to SSB 2025.
*** Total catch in 2026 relative to the advised monitoring TAC in 2025 (869tonnes).
**** The forecast is deterministic.
# Assuming the same catch scenario in 2027 as in 2026.
^ This is not provided because catch advice for 2025 is zero.
^^ These catch scenarios are left blank because the stated SSB cannot be achieved, even with F=0