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
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
9312
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4475






Catch scenarios


Basis
Total catch
F2–5
SSB *
% SSB change **
SSB *
% TAC change ***
% Advice change ^
2019 2019 2019 2020 2020 2020 2020
(t) (ratio) (t) (%) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY × SSB2018/MSY Btrigger 4742 0.17 39558 9.5 41070 -53 -12.9
Other scenarios
FMSY 7000 0.26 38395 6.2 39607 -31 29
F = 0 0 0 41887 15.9 50670 -100 -100
Fpa 7241 0.27 38269 5.9 39451 -29 33
Flim 11264 0.45 36088 -0.141 36864 11.2 107
SSB (2019) = Blim 14847 0.635 34020 -5.9 34584 47 173
SSB (2019) = Bpa ^^
SSB (2019)=MSYBtrigger ^^
F = F2018 11055 0.44 36205 0.183 36998 9.2 103




Symbol Footnotes
* Estimated on 1st January. For this autumn-spawning stock, the SSB is determined at spawning time and is influenced by fisheries between 1st April and spawning (October).
** SSB 2019 relative to SSB 2018.
*** Total catch in 2019 relative to TAC in 2018 (10 127 tonnes).
^ Advice value for 2019 relative to the advice value for 2018 (5445 tonnes).
^^ These catch options are left blank because the stated SSB cannot be achieved, even with F = 0.