Advice and Scenarios Database



Norway lobster (Nephrops norvegicus) in Division 7.b, Functional Unit 17 (west of Ireland, Aran grounds)
StockCode
nep.fu.17
Assessment Year
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13905
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5868






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
MSY approach; F = EU MAP ^: FMSY × Stock abundance 2021 / MSY Btrigger 508 490 436 54 18 6.2 -37
MAP FMSY lower × Stock abundance 2021 / MSY Btrigger 443 427 380 47 16 5.4 -36
Other scenarios
MAP FMSYupper × Stock abundance 2021 / MSYBtrigger 508 490 436 54 18 6.2 -37
F = MAP FMSY 697 672 598 74 25 8.5 -12.9
F = MAP FMSY lower 607 585 521 64 21 7.4 -12.8
F = MAP FMSY upper*** 697 672 598 74 25 8.5 -12.9
F2019 152 147 131 16 5 1.9 -81




Symbol Footnotes
* By number.
** Advice values for 2021 relative to the corresponding 2020 values (MAP advice of 800, 696, and 800 tonnes, respectively); other option values are relative to FMSY.
*** FMSY upper = FMSY for this stock.
^ EU multiannual plan (MAP) for Western Waters (EU, 2019).
^^ Represents the amount that would normally be discarded.