Advice and Scenarios Database



Plaice (Pleuronectes platessa) in Division 7.d (eastern English Channel)
StockCode
ple.27.7d
Assessment Year
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13744






Catch scenarios


Basis
Division 7.d plaice stock Total catch^
Division 7.d plaice stock Projected landings *
Division 7.d plaice stock Projected discards **
Division 7.d plaice stock Ftotal (ages 3-6)
Division 7.d plaice stock Fprojected landings (ages 3–6)
Division 7.d plaice stock Fprojected discards (ages 3–6)
Division 7.d plaice stock SSB
Division 7.d plaice stock % SSB change ***
Division 7.d plaice stock % change in projected catches ****
Division 7.d plaice stock % advice change $
Plaice in Division 7.d # Total catch
Plaice in Division 7.d # Projected landings*
Plaice in Division 7.d # Projected discards**
Plaice in Division 7.d # % change in projected catches ^^
Plaice in Division 7.d # % advice change ##
2021 2021 2021 2021 2021 2021 2022 2022 2022 2022 2021 2021 2021 2022 2022
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%) (t) (t) (t) (%) (%)
ICES Basis Advice
EU MAP ^^^: FMSY 8402 3424 4978 0.25 0.088 0.162 39205 2.7 -7.1 -7.4 9959 4059 5900 -7.7 -6.8
F= MAP FMSY lower$$ 6066 2470 3596 0.175 0.062 0.113 41913 9.7 -33 -7.3 7190 2928 4263 -33 -6.7
F= MAP FMSY upper$$ 11130 4540 6589 0.344 0.121 0.223 36088 -5.5 23 -7.5 13192 5382 7811 22 -6.9
Other scenarios
MSY approach: FMSY 8402 3424 4978 0.25 0.088 0.162 39205 2.7 -7.1 -7.4 9959 4059 5900 -7.7 -6.8
F = 0 0 0 0 0 0 0 49099 29 -100 -100 0 0 0 -100 -100
Fpa 11573 4722 6851 0.36 0.127 0.233 35586 -6.8 28 28 13718 5597 8121 27 28
Flim 15216 6214 9002 0.5 0.177 0.323 31521 -17.5 68 68 18036 7366 10670 67 69
SSB (2022) = Blim 27772 11341 16430 1.15 0.407 0.745 18447 -52 207 206 32918 13443 19475 205 208
SSB (2022) = Bpa 20495 8377 12118 0.736 0.26 0.476 25826 -32 127 126 24293 9930 14364 125 127
SSB (2022) = MSY Btrigger 20495 8377 12118 0.736 0.26 0.476 25826 -32 127 126 24293 9930 14364 125 127
F = F2020 9803 3997 5806 0.297 0.105 0.192 37597 -1.55 8.4 8 11620 4738 6882 7.7 8.7




Symbol Footnotes
* Marketable landings.
** Including BMS landings, assuming recent discard rate.
*** SSB 2022 relative to SSB 2021.
**** Projected catches in 2021 relative to the ICES estimates of catches in 2019 (9047 tonnes) for the Division 7.d plaice stock.
# All plaice in Division 7.d, including plaice originating from the North Sea and the western English Channel, according to a ratio calculated over the years 2003–2019: 15.63% of the plaice landed in Division 7.d is assumed to originate from the North Sea and the western English Channel, and this is added to the predicted values for the Division 7.d plaice stock. The ratio is applied to total catch, projected landings, and projected discards.
## Total catch in 2021 relative to the advice value 2020 (10 687 tonnes) for plaice caught in Division 7.d.
### Advice value this year relative to the advice value last year for the MAP FMSY lower (7710 tonnes) and MAP FMSY upper (13 192 tonnes) for plaice caught in Division 7.d.
^ Differences between total catch and the sum of projected landings and discards result from rounding.
^^ Projected catches in 2021 relative to the ICES estimates of catches in 2019 (10 785 tonnes) for plaice caught in Division 7.d.
^^^ EU multiannual plan (MAP) for the Western Waters (EU, 2020).
$ Total catch in 2021 relative to the advice value 2020 (9073 tonnes) for Division 7.d plaice stock.
$$ Advice value this year relative to the advice value last year for the MAP FMSY lower (6545 tonnes) and MAP FMSY upper (12 029 tonnes) (in Division 7.d plaice stock % advice change colulmn)