Advice and Scenarios Database



Plaice (Pleuronectes platessa) in Subarea 4 (North Sea) and Subdivision 20 (Skagerrak)
StockCode
ple.27.420
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17820
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21840975.v1






Catch scenarios


Basis
Total catch (ple.27.420 plaice stock)
Projected landings (ple.27.420 plaice stock)
Projected discards * (ple.27.420 plaice stock)
Ftotal(ages 2–6) ^ (ple.27.420 plaice stock)
Fprojected landings(ages 2–6) (ple.27.420 plaice stock)
Fprojected discards(ages 2–3) (ple.27.420 plaice stock)
SSB (ple.27.420 plaice stock)
% SSB change ** (ple.27.420 plaice stock)
% advice change$ (ple.27.420 plaice stock)
Total catch # (Plaice caught in Subarea 4 and Subdivision 20)
Projected landing (Plaice caught in Subarea 4 and Subdivision 20)
Projected discards * (Plaice caught in Subarea 4 and Subdivision 20)
% change in projected catches ^^ (Plaice caught in Subarea 4 and Subdivision 20)
% TAC change $$ (Plaice caught in Subarea 4 and Subdivision 20)
2024 2024 2024 2024 2024 2024 2025 2025 2024 2024 2024 2024 2024 2024
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (t) (t) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 155015 73761 81254 0.152 0.055 0.097 979895 6.9 2.9 154663 73603 81059 3.1 2.9
Other scenarios
FMSY upper 183181 87235 95946 0.182 0.066 0.116 956040 4.3 22 182829 87077 95751 22 22
FMSY lower 121182 57616 63566 0.117 0.042 0.075 1008531 10.1 -19.6 120830 57458 63371 -19.4 -19.6
F=0§ 0 0 0 0 0 0 1113964 22 -100 0 0 0 -100 -100
Fpa 183181 87235 95946 0.182 0.066 0.116 956040 4.3 22 182829 87077 95751 22 22
SSB (2025) =Blim 943298 457172 486126 1.57 0.57 1 341003 -63 530 942946 457014 485931 530 530
SSB (2025) =Bpa 768290 370607 397683 1.09 0.4 0.7 473850 -48 410 767938 370449 397488 410 410
SSB (2025) =MSYBtrigger 768290 370607 397683 1.09 0.4 0.7 473850 -48 410 767938 370449 397488 410 410
F =F2023 89109 42338 46771 0.085 0.031 0.054 1036300 13.1 -41 88757 42180 46576 -41 -41




Symbol Footnotes
# Projected catches for plaice in Subarea 4 and Subdivision 20 are calculated as the total catch for the stock (2024) (155 015) reduced by the catch of the plaice 27.420 stock to be taken in Division7.d in 2024 when fishing at catch advice level (157.7 tonnes landing + 194.6 tonnes discards).
$ Projected catch of plaice stock in 2024 relative to the advised value for 2023 adding the proportion caught in Division 7.d (149 987 + 718 = 150 705 tonnes).
$$ Projected catch of plaice in Subarea 4 and Subdivision 20 in 2024 relative to the 2023 TAC (150 705tonnes) for Subarea 4 and Subdivision 20.
* Including BMS landings. Assuming recent discard rates (i.e., 2020-2022).
** SSB 2025 relative to SSB 2024.
^ Fprojected landings and Fprojected discards do not add up to the Ftotal as they are calculated using different ages.
^^ Projected catch of plaice in Subarea 4 and Subdivision 20 in 2024 relative to the value in 2023 (149 987 tonnes).
§ This scenario implies zero fishing in Division 7.d in Quarter 1.