Advice and Scenarios Database



Turbot (Scophthalmus maximus) in Subarea 4 (North Sea)
StockCode
tur.27.4
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17033
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19453871.v1






Catch scenarios


Basis
Total catch*
Projected landings
Projected discards**
F (projected landings, ages 2–6)
SSB
% SSB change^
% advice change^^
2023 2023 2023 2023 2024 2024 2024
(t) (t) (t) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 2432 2289 143 0.361 7103 -8.1 -33
Other scenarios
FMSY upper 3095 2913 182 0.482 6480 -16 -14
FMSY lower 1774 1670 105 0.252 7725 0 -51
F = 0 0 0 0 0 9422 22 -100
Fpa 4778 4497 281 0.856 4926 -36 32
F = F2022 2364 2225 139 0.35 7167 -7.2 -34
SSB (2024) = Blim 6977 6566 411 1.6 2974 -62 93
SSB (2024) = Bpa 5624 5292 331 1.1 4163 -46 56
SSB (2024) = MSYBtrigger 3232 3041 190 0.51 6353 -18 -11
Rollover advice 3609 3396 213 0.58 6002 -22 0




Symbol Footnotes
* (Projected landings)/(1–average discard rate); average discard rate by weight 2019–2021 = 5.9%.
** Including BMS landings, assuming average discard rate by weight 2019–2021 = 5.9%.
^ SSB 2024 relative to SSB 2023.
^^ Total catch in 2023 relative to the advice value for 2022 (3609 tonnes).