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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
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13969
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5841
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 MAP are between 8430 tonnes and 9579 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) 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. 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
9579
9543
9434
109
36
7.5
-33
F = MAP FMSY lower
8430
8398
8302
96
32
6.6
-33
F = MAPFMSY upper ***
9579
9543
9434
109
36
7.5
-33
Other scenarios
MSY approach
9579
9543
9434
109
36
7.5
-33
F2017–2019
4853
4835
4780
55
18
3.8
-66
F2019
7153
7126
7044
82
27
5.6
-50
F35%SPR
14305
14251
14088
163
54
11.2
0.29
Fmax
20948
20868
20629
239
80
16.4
47
Symbol
Footnotes
*
Calculated for dead removals.
**
Advice basis values for 2021 relative to the 2020 advice values (MAP advice of 14 263, 12 552, and 14 263 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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