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View Advice
Herring (Clupea harengus) in subdivisions 30 and 31 (Gulf of Bothnia)
StockCode
her.27.3031
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17790
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21820521.v1
Status:
valid
Advice Component
Advice Category
*
FMSYranges
MP
MSY
NoAdv
Other
PA
Advice Type
*
Catches
Effort
FishMort
Landings
NoAd
NoFish
Advice Unit
*
t
ratio
%
AdviceValue
*
Advice Value Lower Range
Advice Value Upper Range
Wanted Catch
Wanted Catch Lower Range
Wanted Catch Upper Range
Advice Sentence
*
ICES advises that when the EU multiannual plan (MAP) for the Baltic Sea is applied, catches in 2024 that correspond to the F ranges in the plan are between 48 824 (corresponding to Flower × SSB2024/MSY Btrigger) tonnes and 63 049 tonnes (corresponding to FMSY × SSB2024/MSY Btrigger).
Advice Released Date
*
Advice Applicable From
*
Advice Applicable Until
*
TAF Link
Management Alignment
Full
Multiple
Other
Partial
MP WebLink
Management Plan Ownership
Link To Evaluation
Inquiries or Comments?
Email:
Message:
Catch scenarios
Basis
Total catch (2024)
F (2024)
SSB (2025)
% SSB change*
% TAC change**
% Advice change***
Probability SSB less than Blim in 2025 (%)^
2024
2024
2025
2025
2025
2025
2025
(t)
(ratio)
(t)
(%)
(%)
(%)
(%)
ICES Basis Advice
EU MAP^^: FMSYx SSB(2024)/Btrigger
63049
0.208
430423
5
-21
-39
26
EU MAP^^: MAP range Flowerx SSB(2024)/Btrigger
48824
0.158
444084
8.3
-39
-39
21
Other scenarios
F = 0
0
0
491083
20
-100
-100
9
FMSY
80198
0.271
413976
1
0.2
-22
32
Flower
62491
0.206
430958
5.1
-22
-39
25
Fpa = FMSY upper
80463
0.272
413722
0.9
0.5
-22
32
Flim
135034
0.496
361570
-12
69
32
58
Fupperx SSB (2024)/Btrigger
63328
0.209
430155
4.9
-21
-39
26
SSB (2025)=Blim
119217
0.427
376655
-8.1
49
16
50
SSB (2025)= Bpa##
SSB (2025)= MSYBtrigger##
SSB (2025)= SSB (2024)
84420
0.287
409930
0
5.4
-18
34
F=F2023
74845
0.251
419108
2.2
-6.5
-27
29
Symbol
Footnotes
*
SSB 2025 relative to SSB 2024.
**
Catch in 2024 relative to the TAC in 2023 (80074 tonnes).
***
Advice values for 2024 relative to the corresponding 2023 values (EU MAP advice of 102719 [FMSY], 103 059 [Fupper] and 80074 [Flower] tonnes, respectively; other values are relative to 102719 tonnes).
#
Based on stochastic forecasts, using the F with three decimals to get close to the biomass target.
##
The Bpa, and MSYBtrigger options were left blank because Bpa, and MSYBtrigger cannot be achieved in 2025, even with zero catch in 2024.
^
The probability of SSB being below Blim in 2025. This probability relates to the short-term probability of SSB <; Blim and is not comparable to the long-term probability of SSB <; Blim tested in simulations when estimating fishing mortality reference points.
^^
MAP multiannual plan (EU, 2016, 2019, 2020).