Advice and Scenarios Database



Herring (Clupea harengus) in Subdivision 28.1 (Gulf of Riga)
StockCode
her.27.28
Assessment Year
2019
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
10404
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.4749






Catch scenarios


Basis
Total catch
F
SSB
SSB
% SSB change**
% Advice change***
2020 2020 2020 2021 2021 2021
(t) (ratio) (t) (t) (%) (%)
ICES Basis Advice
EU MAP *: FMSY 30382 0.32 108505 105027 -3.2 12.8
EU MAP *: Flower^ 23395 0.24 110066 113019 2.7 13.2
EU MAP *: Fupper^^ 35094 0.38 107403 99703 -7.2 12.3
Other scenarios
ICES MSY approach: FMSY 30382 0.32 108505 105027 -3.2 12.8
F = 0 0 0 114776 140582 22.5 -100
F = Fpa 53002 0.63 102799 79995 -22.2 96.8
F = Flim 67664 0.88 98401 64540 -34.4 151.2
SSB (2021) = Blim 92465 1.46 88952 40800 -54.1 243.3
SSB (2021) = Bpa 74971 1.03 95930 57100 -40.5 178.4
SSB (2021) = MSYBtrigger 72138 0.97 96913 60000 -38.1 167.85
F = F2019 26947 0.28 109283 108942 -0.312 0.0557




Symbol Footnotes
* MAP multiannual plan (EU, 2016).
** SSB 2021 relative to SSB 2020.
*** Total catch in 2020 relative to ICES advice for 2019 (26 932 tonnes for the Gulf of Riga herring stock).
^ ICES advice for Flower in 2020 relative to ICES advice Flower in 2019 (20 664 tonnes), (in % Advice change*** column)
^^ ICES advice for Fupper in 2020 relative to ICES advice Fupper in 2019 (31 237 tonnes), (in % Advice change*** column)