Advice and Scenarios Database



Plaice (Pleuronectes platessa) in Subarea 4 (North Sea) and Subdivision 20 (Skagerrak)
StockCode
ple.27.420
Assessment Year
2021
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
15614
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.7819






Catch scenarios


Basis
Total catch
Projected landings*
Projected discards**
Ftotal ages 2–6^^
Fprojected landings ages 2–6
Fprojected discards ages 2–3
SSB
% SSB change***
% advice change^
2022 2022 2022 2022 2022 2022 2023 2023 2023
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 142508 82622 59886 0.21 0.082 0.2 1112676 1.74 -15.1
Other scenarios
F =FMSY upper 195622 113764 81858 0.3 0.117 0.29 1063091 -2.8 16.6
F = FMSY lower 101854 58940 42914 0.146 0.057 0.142 1150784 5.2 -39
F = 0 0 0 0 0 0 0 1247700 14.1 -100
Fpa 411268 243345 167923 0.769 0.3 0.75 864628 -21 145
SSB (2023) = Blim 1198527 860596 337931 11.3 4.4 11 207288 -81 610
SSB (2023) = Bpa 1093596 759527 334069 7.8 3 7.6 290203 -73 550
SSB (2023) = MSY Btrigger 753542 470359 283183 2.3 0.91 2.3 564599 -48 350
Rollover advice 167785 97392 70393 0.25 0.098 0.25 1089081 -0.42 0
F2022 = F2021 103816 60080 43736 0.149 0.058 0.145 1148941 5.1 -38




Symbol Footnotes
* “Projected” (marketable) landings and discards are used to describe fish that would be landed and discarded in the absence of the EU landing obligation, based on average discard rate estimates for 2018–2020. Both projected landing and projected discards refer to Subarea 4 and Subdivision 20, calculated as the projected total stock catch (including Division 7.d) deducting the catch of plaice from Subarea 4 taken in Division 7.d in 2022. The subtracted value (445 t of projected landings and 530 t of projected discards) is estimated based on the plaice catch advice for Division 7.d for 2022.
** Including BMS landings (EU stocks), assuming recent discard rates.
*** SSB 2023 relative to SSB 2022.
^ Total catch in 2022 relative to the advice value 2021 (167 785 tonnes).
^^ Fprojected landings and Fprojected discards do not add up to the Ftotal as they are calculated using different ages.