Advice and Scenarios Database



Herring (Clupea harengus) in subareas 1, 2, 5 and divisions 4.a and 14.a, Norwegian spring-spawning herring (the Northeast Atlantic and Arctic Ocean)
StockCode
her.27.1-24a514a
Assessment Year
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13883
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5876






Catch scenarios


Basis
Total catch
F
SSB
% SSB change*
% Catch change**
% Advice change***
2021 2021 2022 2022 2022 2022
(t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
Agreed management strategy ^ 651033 0.14 3683236 5 -6 24
Other scenarios
MSY approach: FMSY 722964 0.157 3623608 3 4 38
F = 0 0 0 4225988 21 -100 -100
Fpa 1004581 0.227 3390898 -3 45 91
Flim 1242950 0.291 3194919 -9 79 136
SSB (2022) = Blim 2099298 0.568 2500000 -29 203 299
SSB (2022) = Bpa = MSYBtrigger 1256299 0.295 3184000 -9 81 139
F = F2020 846569 0.187 3521321 0.5 22 64




Symbol Footnotes
* SSB 2022 relative to SSB 2021.
** Catch in 2021 relative to ICES estimated catch in 2020 (693 915 tonnes).
*** Advice value 2021 relative to advice value 2020 (525 594 tonnes).
^ According to the harvest control rule in the management strategy F (2021) = Fmgt = 0.14, since the SSB is forecasted to be above Btrigger on 1 January 2021.