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Norway lobster (Nephrops norvegicus) in Division 4.a, Functional Unit 7 (northern North Sea, Fladen Ground)
StockCode
nep.fu.7
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18358
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21975191.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 12 302 tonnes. To ensure that the stock in Functional Unit (FU) 7 is exploited sustainably, management should be implemented at the functional unit level. The catch in FU 7 has been lower than advised in recent years, and if the difference is transferred to other FUs, this could result in non-precautionary exploitation of those FUs. 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
12302
12275
12195
80
27
7.5
-10.1
Other scenarios
F = F2022
6296
6282
6241
41
14
3.8
-54
F = F2020-2022
6724
6710
6667
43
14
4.1
-51
FMSY lower
10825
10802
10732
70
23
6.6
-21
FMSY upper***
12302
12275
12195
80
27
7.5
-10.1
F35SpR
18371
18331
18212
119
40
11.2
34
Fmax
26899
26841
26667
174
58
16.4
97
Symbol
Footnotes
*
Calculated for dead removals.
**
Advice basis values for 2024 relative to the 2023 advice value (FMSY catch advice of 13 679 tonnes).
***
FMSY upper = FMSY for this stock.
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