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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
nep.fu.13
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17558
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19772401.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 4596 tonnes (4122 tonnes for the Firth of Clyde and 474 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 **
2023
2023
2023
2023
2023
2023
2023
(t)
(t)
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
MSY approach: FMSY
4122
4058
3866
192
64
15.1
14.3
Other scenarios
FMSYlower
2702
2660
2534
126
42
9.9
-25
FMSYupper ***
4122
4058
3866
192
64
15.1
14.3
F2021
5622
5535
5274
261
87
21
56
Symbol
Footnotes
*
By number
**
Advice values for 2023 are relative to the 2022 advice (FMSY advice of 3607 tonnes for the Firth of Clyde, and 628 tonnes for the Sound of Jura).
***
FMSY upper = FMSY for this stock.
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