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Norway lobster (Nephrops norvegicus) in Division 4.b, Functional Unit 6 (central North Sea, Farn Deeps)
StockCode
nep.fu.6
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18417
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21975188.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 2020–2022, catches in 2024 should be no more than 1607 tonnes. To ensure that the stock in Functional Unit (FU) 6 is exploited sustainably, management should be implemented at the functional unit level. Transfer of advised catch from other FUs to FU 6 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. ICES considers this plan to be precautionary when implemented at the functional unit 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
1607
1572
1375
198
35
8.12
0.194
Other scenarios
FMSY lower
1385
1355
1185
170
30
7
-13.6
FMSY upper***
1607
1572
1375
198
35
8.12
0.194
F = F2022
2533
2478
2166
311
55
12.8
58
F = F2020–2022
2263
2213
1935
278
49
11.43
41
Symbol
Footnotes
*
Calculated for dead removals
**
Advice values for 2024 relative to the 2023 value (FMSY catch advice of 1604tonnes).
***
FMSY upper=FMSY for this stock.