Advice and Scenarios Database



Herring (Clupea harengus) in Subdivision 28.1 (Gulf of Riga)
StockCode
her.27.28
Assessment Year
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
9415
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4382






Catch scenarios


Basis
Total catch
Ftotal
SSB
SSB
% SSBchange**
% Advice change***
2019 2019 2019 2020 2020 2020
(t) (ratio) (t) (t) (%) (%)
ICES Basis Advice
EU MAP*: FMSY 26932 0.32 91669 92404 0.8 8.1
EU MAP*: Flower^ 20664 0.24 93020 99670 7.1 6.5
EU MAP*: Fupper^^ 31237 0.38 90698 87477 -3.6 7
Other scenarios
ICES MSY approach: FMSY 26932 0.32 91669 92404 0.8 8.1
F = 0 0 0 97030 124349 28.2 -100
F = Fpa 47115 0.63 86754 69785 -19.6 89.1
F = Flim 59942 0.88 83040 56105 -32.4 140.6
SSB (2020) = Blim 75061 1.25 77788 40800 -47.5 201.2
SSB (2020) = Bpa 58989 0.86 83335 57100 -31.5 136.7
SSB (2020) = MSY Btrigger 56232 0.8 84172 60000 -28.7 125.7
F = F2018 24584 0.29 92183 95113 3.2 -1.3




Symbol Footnotes
* MAP multiannual plan (EU, 2016).
** SSB 2020 relative to SSB 2019.
*** Total catch in 2019 relative to ICES advice for 2018 (24 919 tonnes for the Gulf of Riga herring stock).
^ ICES advice for Flower in 2019 relative to ICES advice Flower in 2018 (19 396 tonnes), (in % Advice change*** column)
^^ ICES advice for Fupper in 2019 relative to ICES advice Fupper in 2018 (29 195 tonnes), (in % Advice change*** column)