Advice and Scenarios Database



Plaice (Pleuronectes platessa) in Division 7.a (Irish Sea)
StockCode (Assessment Component)
ple.27.7a
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19851






Catch scenarios


Basis
Total catch
Projected landings
Projected Surviving discards
Projected dead discards
Total projected discards*
Ftotal
Fprojected landings
Fprojected discards**
SSB
% SSB change***
% advice change^
Probability of SSB (2027) lt Blim (%)
2026 2026 2026 2026 2026 2026 2026 2026 2027 2027 2026 2027
(t) (t) (t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: F=FMSY × SSB2026/MSY Btrigger 614 138 190 285 476 0.107 0.0194 0.088 5213 8.9 -59 11.2
Other scenarios
FMSY 1081 243 335 503 839 0.196 0.035 0.161 4908 2.5 -28 19.6
FMSY lower × SSB2026/MSY Btrigger 423 95 131 197 328 0.073 0.0132 0.06 5336 11.5 -72 9.2
FMSY upper × SSB2026/MSY Btrigger 898 202 279 418 696 0.16 0.029 0.131 5013 4.7 -40 16.9
F= FMSY lower 753 169 234 350 584 0.133 0.024 0.109 5117 6.9 -50 13.6
F= FMSY upper 1551 348 481 722 1203 0.293 0.053 0.24 4588 -4.2 3.1 29
F= Fpa 2038 457 632 948 1580 0.403 0.073 0.33 4284 -10.5 35 38
F=0 0 0 0 0 0 0 0 0 5622 17.4 -100 4.9
SSB2027=Blim 2555 574 793 1189 1982 0.53 0.097 0.44 3958 -17.3 70 50
SSB2027=Bpa 488 110 152 227 379 0.084 0.0153 0.069 5294 10.6 -68 10
SSB2027 = MSYBtrigger^^
Rollover advice 1504 338 467 700 1166 0.28 0.051 0.23 4620 -3.5 0 28
F=F2025 1052 236 326 490 816 0.19 0.034 0.156 4927 2.9 -30 19.1
SSB2027 = SSB2026 1260 283 391 586 977 0.23 0.042 0.19 4788 0 -16.2 23




Symbol Footnotes
* Dead + surviving projected discards.
** Fprojected discards concerns dead projected discards only.
*** SSB 2027 relative to SSB 2026.
^ Advice value for 2026 relative to the advice value for 2025 (1504 tonnes). TAC 2025 was equal to the advice value.
^^ The MSY Btrigger option was left blank because it can not be achieved in 2027, even with zero catch in 2026.