Advice and Scenarios Database



Northern shrimp (Pandalus borealis) in divisions 3.a and 4.a East (Skagerrak and Kattegat and northern North Sea in the Norwegian Deep)
StockCode (Assessment Component)
pra.27.3a4a
Assessment Year
2021
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
14071
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.7834






Catch scenarios


Basis
Total catch
Ftotal
SSB
% SSB change*
% TAC change**
% advice change***
2021 2021 2022 2022 2021 2021
(t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
LTMS: F = Fmgt × (SSB2021/ MSY Btrigger) 7166 0.45 9041 19.3 -18 -18
Other scenarios
MSY approach: F=FMSY×(SSB2021/ MSYBtrigger) 7291 0.46 8967 18.3 -16.5 -16.5
F=0 0 0 13555 79 -100 -100
Fpa 9182 0.62 7864 3.7 5.1 5.1
FMSY 8958 0.6 7993 5.4 2.5 2.5
FMSY lower 7040 0.44 9117 20 -19.4 -19.4
FMSY upper 9182 0.62 7864 3.7 5.1 5.1
Flim 12751 1 5918 -22 46 46
F2020 8815 0.59 8075 6.5 0.9 0.9
Fmgt 8847 0.59 8056 6.3 1.27 1.27
SSB2022=Bpa=Btrigger 5744 0.34 9900 31 -34 -34
SSB2022=Blim 12020 0.91 6300 -16.9 38 38




Symbol Footnotes
* SSB2022 relative to SSB2021.
** Advised catch in 2021 relative to TACs in 2020 (8736 tonnes).
*** Advised catch in 2021 relative to advice value in 2020 (8736 tonnes).