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Norway lobster (Nephrops norvegicus) in Division 6.a, Functional Unit 13 (West of Scotland, the Firth of Clyde and Sound of Jura)
StockCode (Assessment Component)
nep.fu.13
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18456
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21908208.v1
Status:
Expired
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 2020–2022, catches in 2024 should be no more than 4 527 tonnes (3 870 tonnes for the Firth of Clyde and 657 tonnes for the Sound of Jura). To ensure that the stock in Functional Unit (FU) 13 is exploited sustainably, management should be implemented at the FU level. In this particular FU, additional measures should be implemented to ensure that landings taken in each component (the Firth of Clyde and the Sound of Jura) are in line with the advice. ICES notes the existence of a management plan, developed and adopted by one of the relevant management authorities for Subarea 6. 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**
2024
2024
2024
2024
2024
2024
2024
(t)
(t)
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
MSY approach: FMSY
657
649
625
24
8
12
39
Other scenarios
F= MAP^ FMSY lower
513
507
489
18
6
9.4
8.2
F= MAP^ FMSY upper***
657
649
625
24
8
12
39
F2022
657
649
625
24
8
12
39
Symbol
Footnotes
*
By number.
**
Advice values for 2024 are relative to the 2023 advice (FMSY advice of 4122 tonnes for the Firth of Clyde, and 474 tonnes for the Sound of Jura).
***
FMSY upper = FMSY for this stock.
^
EU multiannual plan (MAP) for the Western Waters (EU, 2019)
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