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Norway lobster (Nephrops norvegicus) in Division 4.b, Functional Unit 8 (central North Sea, Firth of Forth)
StockCode
nep.fu.8
Assessment Year
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13970
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5842
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 EU multiannual plan (MAP) for the North Sea is applied, catches in 2021 that correspond to the F ranges in the plan are between 2556 tonnes and 3931 tonnes, assuming recent discard rates. The entire range is considered precautionary when applying the ICES advice rule. To ensure that the stock in Functional Unit (FU) 8 is exploited sustainably, management should be implemented at the functional unit level. Note: This advice sheet is abbreviated due to the COVID-19 disruption. The previous advice issued for 2020 is attached as Annex 1.
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 **
2021
2021
2021
2021
2021
2021
2021
(t)
(t)
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
EU MAP ^: FMSY
3931
3827
3514
313
104
16.3
25
F= MAP FMSY lower
2556
2488
2285
203
68
10.6
25
F = MAPFMSY upper ***
3931
3827
3514
313
104
16.3
25
Other scenarios
MSY approach
3931
3827
3514
313
104
16.3
25
F0.1
2266
2206
2026
180
60
9.4
-28
F35SpR
3063
2982
2738
244
81
12.7
-2.5
F2017-2019
4100
3991
3665
326
109
17
30
F2019
4413
4296
3945
351
117
18.3
40
Symbol
Footnotes
*
Calculated for dead removals.
**
Advice basis values for 2021 relative to the 2020 advice values (MAP advice of 3143, 2045, and 3143 tonnes, respectively); other option values are relative to FMSY.
***
FMSY upper = FMSY for this stock.
^
EU multiannual plan (MAP) for the North Sea (EU, 2018).
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