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
Q1 and Q2 catch^
Ftotal
SSB
% SSB change*
% TAC change**
% advice change**
2022 2022 2022 2023 2023 2022 2022
(t) (t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
LTMS: F = Fmgt × (SSB2022/ MSY Btrigger) 10890 5554 0.56 9819 4.9 52 52
Other scenarios
MSY approach: F=FMSY×(SSB2022/ MSYBtrigger) 11033 5627 0.57 9728 4 54 54
F=0 0 0 0 17176 84 -100 -100
Fpa 11729 5982 0.62 9286 -0.8 64 64
FMSY 11455 5842 0.6 9460 1.09 60 60
FMSY lower 9048 4614 0.44 11009 17.6 26 26
FMSY upper 11729 5982 0.62 9286 -0.8 64 64
Flim 16095 8208 1 6636 -29 125 125
F2021 9378 4783 0.44 10794 15.3 31 31
Fmgt 11316 5771 0.59 9548 2 58 58
SSB2023=Bpa=Btrigger 10763 5489 0.55 9900 5.8 50 50
SSB2023=Blim 16681 8507 1.06 6300 -33 133 133




Symbol Footnotes
* SSB2023 relative to predicted SSB2022.
** Advised catch in 2022 relative to advised catch in 2021 (7166t).
^ Total catch 2022 × average proportion of catch taken in the first six months of each of the years 2016–2020 (0.51).