Advice and Scenarios Database



Sole (Solea solea) in Subarea 4 (North Sea)
StockCode
sol.27.4
Assessment Year
2017
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
9255
Link to Advice Sheet
NA - The advice link for key 9255 was not found!






Catch scenarios


Basis
Total catch^
Wanted catch*
Unwanted catch*
Ftotal (ages 2–6)
Fwanted (ages 2–6)
Funwanted (ages 1–3)
SSB
% SSB change**
% TAC change***
2018 2018 2018 2018 2018 2018 2019 2019 2019
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
Fmp 15726 14702 1024 0.2 0.171 0.048 66383 0.49 -2.5
Other scenarios
MSY approach: FMSY 15726 14702 1024 0.2 0.171 0.048 66383 0.49 -2.5
F = 0 0 0 0 0 0 0 80919 23 -100
Fpa 30830 28768 2063 0.44 0.38 0.105 52524 -21 91
Flim 40002 37273 2729 0.62 0.53 0.147 44175 -33 148
SSB (2019) = Blim 59951 55629 4323 1.17 1 0.28 26300 -60 272
SSB (2019) = Bpa 47946 44610 3336 0.81 0.69 0.192 37000 -44 197
SSB (2019) = MSYBtrigger 47946 44610 3336 0.81 0.69 0.192 37000 -44 197
F = F2017 15816 14787 1030 0.2 0.172 0.048 66300 0.36 -1.9
A: Max. 24210 0.34 56174 -11
B: Min. 11924 0.15 67469 6
C: Stock 14363 0.18 66631 5
D: SQ effort 18659 0.28 54211 -14
E: SQ effort 16679 0.23 60859 -4
F: Value 15114 0.2 64530 2
G: Range 13545 0.18 62409 -1




Symbol Footnotes
* “Wanted” and “unwanted” catch 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 2014–2016.
** SSB 2019 relative to SSB 2018 (66 060 t).
*** Total catch in 2018 relative to TAC in 2017 (16 123 t).
^ Differences between the total catch and the sum of wanted and unwanted catches result from rounding.
A. Maximum scenario: Each fleet stops fishing when its last stock share is exhausted.
B. Minimum scenario: Each fleet stops fishing when its first stock share is exhausted.
C. HAD: Each fleet stops fishing when its individual haddock share is exhausted.
D. POK: Each fleet stops fishing when its individual saithe share is exhauste
E. SQ (status quo) effort scenario: The effort of each fleet in 2017 and 2018 is as in 2016.
F. Value scenario: The effort of each fleet is equal to the weighted average of the efforts required to catch the fleet’s quota share of each of the stocks, where the weights are the relative catch values of each stock in the fleet’s portfolio.
G. Range scenario: where the potential for TAC mismatches in 2018 are minimized within the FMSY range, for the demersal fish stocks for which such a range is available (cod.27.47d20; had.27.46a20; pok.27.3a46; ple.27.420; ple.27.7d; sol.27.4; sol.27.7d).