Advice and Scenarios Database



Herring (Clupea harengus) in subdivisions 30 and 31 (Gulf of Bothnia)
StockCode
her.27.3031
Assessment Year
2017
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
8959
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.3129






Catch scenarios


Basis
Catch
Ftotal
SSB
SSB
% SSB change*
% TAC change**
2018 2018 2018 2019 2019 2019
(t) (ratio) (t) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 95566 0.21 462072 434037 -6 -32
Other scenarios
F = 0 0 0 475338 543176 14 -100
Fpa 103591 0.23 460880 425100 -8 -27
Flim 126860 0.29 457135 397958 -13 -10
SSB (2019) = Blim 308808 0.95 416387 200170 -52 119
SSB (2019) = Bpa 232040 0.62 436777 280727 -36 65
SSB (2019) = MSY Btrigger 232040 0.62 436777 280727 -36 65
F = F2017 123509 0.28 457684 402000 -12 -12
F = proposed FMSY lower^ 70617 0.15 465809 462502 -1 -50
F = proposed FMSY lower + 0.01 74948 0.16 465216 457543 -2 -47
F = proposed FMSY lower + 0.02 79254 0.17 464624 452590 -3 -44
F = proposed FMSY lower + 0.03 83487 0.18 464033 447520 -4 -41
F = proposed FMSY lower + 0.04 87697 0.19 463435 442900 -4 -38
F = proposed FMSY lower + 0.05 91452 0.2 462739 438640 -5 -35
F = proposed FMSY upper^^ 95566 0.21 462072 434037 -6 -32




Symbol Footnotes
* SSB 2019 relative to SSB 2018.
** Catch in 2018 relative to TAC in 2017 (140 998 t).
^ Lower end of the FMSY range calculated during the stock benchmark in 2017.
^^ Upper end of the FMSY range calculated during the stock benchmark in 2017.