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
Q1 and Q2 catch ^
Ftotal
SSB
% SSB change *
% TAC change **
% advice change **
2021 2021 2021 2022 2022 2021 2021
(t) (t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
LTMS: F = FMGT × (SSB2021/ MSY Btrigger) 8753 4552 0.54 8206 -9.9 0.2 0.2
Other scenarios
MSY approach: F = FMSY × (SSB2021/ MSY Btrigger) 8875 4615 0.55 8130 -10.7 1.6 1.6
F = 0 0 0 0 13981 53.6 -100 -100
Fpa 10353 5384 0.68 7229 -20.6 18.5 18.5
FMSY 9461 4920 0.6 7770 -14.7 8.3 8.3
FMSY lower 7472 3885 0.44 9009 -1.1 -14.5 -14.5
FMSY upper 10769 5600 0.72 6981 -23.3 23.3 23.3
Flim 13311 6922 1 5521 -39.4 52.4 52.4
F2020 8132 4229 0.49 8593 -5.6 -6.9 -6.9
FMGT 9352 4863 0.59 7837 -13.9 7.1 7.1
SSB2022 = BPA = Btrigger 6083 3163 0.34 9899 8.7 -30.4 -30.4
SSB2022 = Blim 11933 6205 0.84 6300 -30.8 36.6 36.6




Symbol Footnotes
* SSB2022 relative to predicted SSB2021.
** Advised catch for 2021 relative to the advised catch for 2020 (8736 tonnes).
^ Total catch 2021 × average proportion of catch taken in the first two quarters of 2015–2019 (0.52).