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Norway lobster (Nephrops norvegicus) in divisions 7.f and 7.g, Functional Unit 22 (Celtic Sea, Bristol Channel)
StockCode
nep.fu.22
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17546
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19772422.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 MSY approach is applied, and assuming that discard rates and fishery selection patterns do not change from the average of the years 2019–2021, catches in 2023 should be no more than 2548 tonnes. To ensure that the stock in Functional Unit (FU) 22 is exploited sustainably, management should be implemented at the FU level. ICES notes the existence of a management plan, developed and adopted by one of the relevant management authorities for Subarea 7. ICES considers this plan to be precautionary when implemented at the FU level.
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 (PL + PDD + PSD)
Dead removals (PL + PDD)
Projected landings (PL)
Projected dead discards (PDD)
Projected surviving discards (PSD)
% harvest rate* (for PL + PDD)
% advice change **
2023
2023
2023
2023
2023
2023
2023
(t)
(t)
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
MSY approach: FMSY × Stock abundance 2023 / MSY Btrigger
2548
2473
2248
225
75
11.6
103
Other scenarios
FMSYlower × Stock abundance 2023 / MSYBtrigger
2025
1965
1786
179
60
9.2
61
FMSY
2818
2735
2486
249
83
12.8
124
FMSY lower
2245
2179
1981
198
66
10.2
79
FMSY upper***
2818
2735
2486
249
83
12.8
124
F2021
2347
2277
2070
207
69
10.7
87
Symbol
Footnotes
*
By number
**
Advice values for 2023 are relative to the 2022 advice (FMSY advice of 1257 tonnes).
***
FMSY upper = FMSY for this stock.
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