Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Norway lobster (Nephrops norvegicus) in Division 4.a, Functional Unit 32 (northern North Sea, Norway Deep)
Species:	Stock Assessment Graphs
Stock code:	nep.fu.32
Assessment Year:	2024
Key:	19269


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	F
Fishing pressure units
Stock size description	B/Bmsy
Stock size units


Fish reference points

Management plan	SSB_MP
Management plan	F_MP
MSY approach	MSYB_trigger	0.5
MSY approach	F_MSY	1
Precautionary approach	B_lim
	B_pa
	F_lim
	F_pa

Age and Length

Recruitment	0
F

Fish data

Year	Low SSB	SSB	High SSB	Landings	Catches	Discards	Low F	F	High F
1993	0.69	1.1	1.76	339	389	50	0.26	0.47	0.87
1994	0.79	1.26	2	755	866	111	0.35	0.57	0.96
1995	0.84	1.31	2.1	489	561	72	0.4	0.66	1.08
1996	0.87	1.34	2.1	952	1092	140	0.46	0.74	1.2
1997	0.89	1.36	2.1	760	874	112	0.55	0.87	1.39
1998	0.84	1.28	1.95	836	959	123	0.57	0.91	1.44
1999	0.85	1.29	1.96	1119	1287	164	0.69	1.07	1.66
2000	0.82	1.24	1.89	1085	1244	159	0.82	1.25	1.91
2001	0.76	1.15	1.76	1190	1368	175	0.94	1.41	2.1
2002	0.69	1.05	1.61	1171	1348	172	1.08	1.6	2.4
2003	0.6	0.92	1.42	1090	1238	145	1.19	1.74	2.5
2004	0.52	0.8	1.23	922	1124	200	1.29	1.85	2.7
2005	0.47	0.72	1.1	1089	1286	194	1.5	2.1	3
2006	0.4	0.61	0.94	1033	1164	126	1.78	2.5	3.4
2007	0.3	0.47	0.72	755	824	64	1.92	2.6	3.6
2008	0.22	0.34	0.53	675	683	0	1.94	2.6	3.6
2009	0.181	0.28	0.44	477	513	28	1.85	2.5	3.4
2010	0.164	0.26	0.41	407	453	36	1.72	2.3	3.1
2011	0.147	0.24	0.38	395	405	0	1.65	2.3	3.1
2012	0.129	0.21	0.36	310	358	35	1.6	2.2	3.1
2013	0.109	0.184	0.31	191	253	51	1.46	2.1	2.9
2014	0.096	0.163	0.28	205	220	3.8	1.3	1.85	2.6
2015	0.092	0.157	0.27	192	215	4.5	1.24	1.77	2.5
2016	0.087	0.149	0.25	178	201	0.56	1.23	1.75	2.5
2017	0.083	0.139	0.23	147	169	1.01	1.16	1.65	2.3
2018	0.086	0.141	0.23	137	160	0	1.1	1.54	2.2
2019	0.09	0.144	0.23	192	212	0.75	1.19	1.65	2.3
2020	0.089	0.141	0.22	180	198	0.75	1.3	1.8	2.5
2021	0.088	0.139	0.22	218	232	0.75	1.34	1.87	2.6
2022	0.095	0.151	0.24	250	267	3.1	1.41	2	2.9
2023	0.097	0.159	0.26	276	294	0	1.44	2.2	3.2
2024	0.09	0.16	0.29

Custom reference points

CustomRefPointName	CustomRefPointValue	CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5

Custom fish data column names

CustomName1
recreational catch

Custom fish data

Year	Custom1
1993
1994	0
1995	0
1996	0
1997	0
1998	2
1999	0
2000	4
2001	0
2002	3
2003	5
2004	3
2005	2
2006	3
2007	5
2008	5
2009	7
2010	8
2011	10
2012	10
2013	12
2014	11
2015	12
2016	18
2017	22
2018	21
2019	23
2020	20
2021	17
2022	13
2023	14
2024

Sensivity data