Advice and Scenarios Database



Blue whiting (Micromesistius poutassou) in subareas 1-9, 12, and 14 (Northeast Atlantic and adjacent waters)
StockCode
whb.27.1-91214
Assessment Year
2019
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13090
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.4886






Catch scenarios


Basis
Total catch
F
SSB
% SSB change*
% Catch change**
% Advice change***
2020 2020 2021 2021 2021 2021
(t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
Long-term management strategy (F = FMSY) 1161615 0.32 3435240 -20.6 -19.6 1.6
Other scenarios
MSY approach: FMSY 1161615 0.32 3435240 -20.6 -19.6 1.6
F = 0 0 0 4558202 5.4 -100 -100
Fpa 1738144 0.53 2887400 -33.2 20.3 52
Flim 2464861 0.88 2210394 -48.9 70.7 115.5
SSB (2021) = Blim 3258019 1.476 1500000 -65.3 125.6 184.9
SSB (2021 = Bpa 2421569 0.855 2250000 -48 67.7 111.7
SSB (2021) = MSYBtrigger 2421569 0.855 2250000 -48 67.7 111.7
F = F (2019) 1207680 0.335 3391192 -21.6 -16.4 5.6
SSB (2021) = SSB(2020) 239207 0.058 4325386 0 -83.4 -79.1
Catch (2020) = Catch(2019) 1444301 0.418 3165186 -26.8 0 26.3
Catch (2020) = Catch(2019) -20% 1155441 0.318 3441089 -20.4 -20 1
Catch (2020) = Catch(2019) +25% 1805376 0.558 2823952 -37.7 25 57.9
Catch (2020) = Advice (2019) -20% 914903 0.242 3671942 -15.1 -36.7 -20
Catch (2020) = Advice (2019) +25% 1429536 0.412 3179662 -26.5 -1.02 25




Symbol Footnotes
* SSB 2021 relative to SSB 2020 (4 325 386 tonnes).
** Catch in 2020 relative to catch in 2019 (1 444 301 tonnes, ICES estimate).
*** Advice value for 2020 relative to the advice value for 2019 (1 143 629 tonnes).