Advice and Scenarios Database



Norway pout (Trisopterus esmarkii) in Subarea 4 and Division 3.a (North Sea, Skagerrak and Kattegat)
StockCode
nop.27.3a4
Assessment Year
2021
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
16855
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.7812






Catch scenarios


Basis
Catch (1 November 2021–31 October 2022)*
F (1 November 2021–31 October 2022)
5th percentile SSB (4th quarter 2022)
Median SSB (4th quarter 2022)
% SSB change**
% catch change***
% advice change^
2022 2022 2022 2022 2023 2023 2023
(t) (ratio) (t) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: (escapement strategy) 95% probability of SSB being above Blim in the 4th quarter of 2022 118273 0.47 42573 130020 -45 14 -53
Other scenarios
F = 0 0 0 88170 202990 -14 -100 -100
F = Fstatus quo 63193 0.23 61820 161790 -32 -39 -75
F = 0.3 80473 0.3 55820 151810 -36 -23 -68
F = 0.4 103130 0.4 48080 138740 -41 -1 -59
F = 0.5 123900 0.5 41100 126860 -46 19 -51
F = 0.6 143323 0.6 35000 116760 -51 38 -44
F = 0.7 161545 0.7 30330 107550 -55 55 -36




Symbol Footnotes
* The catch forecast is for the period 1 October to 30 September.
** SSB at the beginning of the 4th quarter of 2022 relative to SSB at the beginning of the 4th quarter of 2021 (= 236 634 tonnes).
*** Catches 1 October 2021–30 September 2022 relative to catches 1 October 2020–15 September 2021 (= 104 121 tonnes).
^ Advice value 2022 relative to the advice value 2021 (= 254 038 tonnes).