ICES Marine Data

Stock Assessment Graphs

	Stock assessment graphs > View list of published graphs and tables > View published graphs and tables

Norway lobster (Nephrops norvegicus) in Division 8.c, Functional Unit 31 (southern Bay of Biscay and Cantabrian Sea)	Download graphs and tables(.doc) Download stock data (XML) Download standard graphs (zip) - regular size Download standard graphs (zip) - powerpoint size View on the map View source data

Species: Nephrops norvegicus
Stock code: nep.fu.31
Assessment Year:2021
Purpose:Advice
Assessment Key: 15633
Stock Key: 169161

Year	Relative Biomass	97.5%	2.5%	Total	Relative Fishing Pressure	97.5%	2.5%
				Catch
				tonnes	ratio
1983	1.206	1.889	0.77	63	1.12	2.5	0.50
1984	1.282	2.386	0.689	100	1.57	3.6	0.68
1985	1.358	2.88	0.64	128	1.64	4.0	0.67
1986	1.443	3.541	0.588	127	1.45	3.8	0.56
1987	1.475	3.998	0.544	118	1.57	4.2	0.58
1988	1.533	4.508	0.521	151	1.95	5.6	0.68
1989	1.537	4.876	0.484	177	2.4	7.0	0.79
1990	1.456	4.987	0.425	174	2.0	6.1	0.68
1991	1.174	3.843	0.359	109	1.65	4.8	0.56
1992	1.067	3.474	0.328	94	1.64	4.8	0.57
1993	1.014	3.266	0.315	101	2.4	7.0	0.82
1994	1.01	3.38	0.302	148	2.5	7.2	0.87
1995	0.824	2.697	0.252	94	2.9	7.8	1.04
1996	0.692	2.098	0.228	129	3.8	10.6	1.39
1997	0.566	1.736	0.185	98	3.2	9.0	1.13
1998	0.447	1.338	0.149	72	2.4	7.1	0.78
1999	0.453	1.518	0.135	48	1.62	5.0	0.52
2000	0.433	1.45	0.129	34	1.19	3.7	0.38
2001	0.45	1.53	0.132	27	0.95	3.0	0.30
2002	0.475	1.61	0.14	26	1.10	3.4	0.35
2003	0.528	1.844	0.151	35	1.05	3.3	0.33
2004	0.522	1.784	0.153	29	1.23	4.0	0.38
2005	0.565	2.043	0.156	48	1.46	4.9	0.43
2006	0.55	2.102	0.144	37	1.35	4.5	0.41
2007	0.463	1.699	0.126	32	1.19	3.9	0.36
2008	0.391	1.404	0.109	20	0.71	2.3	0.22
2009	0.332	1.159	0.095	10	0.59	1.82	0.194
2010	0.283	0.904	0.088	9	0.54	1.60	0.183
2011	0.255	0.769	0.085	7	0.53	1.57	0.181
2012	0.267	0.786	0.09	10	0.57	1.75	0.183
2013	0.371	1.262	0.109	10	0.25	0.80	0.076
2014	0.42	1.489	0.119	4	0.127	0.43	0.038
2015	0.489	1.845	0.129	3	0.072	0.25	0.021
2016	0.517	1.99	0.135	3	0.053	0.175	0.0161
2017	0.489	1.794	0.133	0	0.088	0.27	0.029
2018	0.413	1.298	0.131	3	0.191	0.56	0.064
2019	0.408	1.242	0.134	6	0.34	1.02	0.114
2020	0.44	1.37	0.141	10	0.44	1.47	0.132
2021	0.444	1.363	0.144
Average	0.719	2.183	0.248	60	1.31	3.8	0.45

Fishing pressure

Stock size

2018

2019

2020

2019

2020

2021

Maximum sustainable yield

F_MSY

Appropriate

MSY B_trigger

Below trigger

Precautionary approach

F_pa,F_lim

Increased risk

B_pa,B_lim

Full reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable