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Norway lobster (Nephrops norvegicus) in Division 4.b, Functional Unit 34 (central North Sea, Devil’s Hole)
StockCode
nep.fu.34
Assessment Year
2018
Stock Category
4.14
Purpose
Advice
Published
Stock Assessment Key
10254
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4620
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
*
Please note: The present advice replaces the advice given in June 2018 for catches in 2019 and 2020. ICES advises that when the precautionary approach is applied, catches in each of the years 2019 and 2020 should not exceed 590 tonnes. In order to ensure the stock in this functional unit (FU) is exploited sustainably, management should be 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 catches
Wanted catches*
Unwanted catches*
Harvest rate**
% Advice change***
2019
2019
2019
2019
2019
(t)
(t)
(t)
(%)
(%)
ICES Basis Advice
2016 advice for 2017 and 2018 + 20%
590
552
38
5.4
20
Other scenarios
2016 advice for 2017 and 2018 -20%
394
368
26
3.6
-20
2016 advice for 2017 and 2018
492
460
32
4.5
0
Recent average landings (2015–2017)
631
590
41
5.8
28
Average landings (2008–2017)
679
635
44
6.2
38
MSY harvest rate
817
764
53
7.5
66
Maximum
1396
1305
91
12.8
184
Symbol
Footnotes
*
Wanted” and “unwanted” catch are used to described Norway lobster that would be landed and discarded, based on average discard rate estimates (12.9% in 2008–2011).
**
Calculated for dead removals and applied to total catch.
***
Total catch 2019 and 2020 relative to advice value for 2017 and 2018 (492 t).
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