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
her.27.irls
Assessment Year
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13746
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5927






Catch scenarios


Basis
Total catch
F2–5
SSB *
% SSB change **
SSB * #
% TAC change ***
% advice change ^
2021 2021 2021 2022 2022 2022 2022
(t) (ratio) (t) (%) (t) (%) (%)
ICES Basis Advice
MSY approach: zero catch 0 0 16063 -8 15426 -100
Other scenarios
FMSY 3504 0.26 14199 -19 11055 303
FMSY × SSB2020 / MSYBtrigger 1232 0.08 15432 -12 13819 42
F = 0 0 0 16063 -8 15426 -100
Fpa 3622 0.27 14132 -19 10919 317
Flim 5566 0.45 12987 -26 8786 541
SSB2021 = Blim ^^
SSB2021 = Bpa ^^
SSB2021=MSYBtrigger ^^
F = F2020 978 0.066 15564 -11 14144 13
TAC = Monitoring TAC 869 0.059 15620 -11 14240 0




Symbol Footnotes
* For this autumn-spawning stock, the SSB is determined at spawning time and is influenced by fisheries between 1 April and spawning (October).
** SSB 2021 relative to SSB 2020.
*** Total catch in 2021 relative to the TAC in 2020 (869 tonnes).
# Assuming same catch scenario in 2022 as in 2021.
^ Advice value for 2021 relative to the advice value for 2020 (0 tonnes).
^^ These catch scenarios are left blank because the stated SSB cannot be achieved, even with F = 0.