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Norway lobster (Nephrops norvegicus) in Division 4.a, Functional Unit 9 (central North Sea, Moray Firth)
StockCode
nep.fu.9
Assessment Year
2024
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19199
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.25019423.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 maximum sustainable yield (MSY) approach is applied, and assuming that discard rates and fishery selection patterns do not change from the average of the years 2021–2023, catches in 2025 should be no more than 884 tonnes. To ensure that the stock in Functional Unit (FU) 9 is exploited sustainably, management should be implemented at the FU level. Transfer of advised catch from other FUs to FU 9 could lead to overexploitation. ICES notes the existence of a management plan, developed and adopted by one of the relevant management authorities for Subarea 4.
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**
2025
2025
2025
2025
2025
2025
2025
(t)
(t)
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach: FMSY
884
881
871
10
3
11.8
-50
Other scenarios
F = F2023
561
559
553
6
2
7.5
-68
F0.1
584
582
576
6
2
7.8
-67
F = F2021–2023
600
598
591
7
2
8
-66
F = MAP^: FMSY lower
683
680
672
8
3
9.1
-61
F = MAP^: FMSY upper
884
881
871
10
3
11.8
-50
Fmax
1116
1112
1100
12
4
14.9
-37
Symbol
Footnotes
*
Calculated for dead removals.
**
Advice basis values for 2025 relative to the 2024 advice values (FMSY catch advice of 1770tonnes).
^
EU multiannual plan (MAP) for the North Sea (EU, 2018).
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