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
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13308
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5911






Catch scenarios


Basis
Total catch
Ftotal
SSB
% SSB change*
% TAC change**
% advice change***
2020 2020 2021 2021 2020 2020
(t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
LTMS: F = FMGT × (SSB2020/ MSY Btrigger) 8736 0.5 8867 6.6 41.7 41.7
Other scenarios
MSY approach: F=FMSY×(SSB2020/ MSYBtrigger) 8736 0.5 8867 6.6 41.7 41.7
F=0 0 0 14940 79.6 -100 -100
Fpa 10932 0.68 7432 -10.7 77.4 77.4
FMSY 9999 0.6 8035 -3.4 62.2 62.2
FMSY lower 7917 0.44 9414 13.2 28.5 28.5
FMSY upper 11362 0.72 7157 -14 84.4 84.4
Flim 13997 1 5524 -33.6 127.1 127.1
F2019 9127 0.53 8607 3.5 48.1 48.1
FMGT 9883 0.59 8111 -2.5 60.4 60.4
SSB2021=BPA=Btrigger 7198 0.39 9898 19 16.8 16.8
SSB2021=Blim 12728 0.86 6300 -24.3 106.5 106.5




Symbol Footnotes
* SSB2021 relative to SSB2020.
** Advised catch in 2020 relative to TACs in 2019 (6163 tonnes). Note that Norway and Denmark banked 523 tonnes and 245 tonnes, respectively, from 2018. These catches are not included in the TAC change.
*** Advised catch for 2020 relative to the advice value for 2019 (6163 tonnes).