ICES Marine Data

Stock Assessment Graphs

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

Blonde ray (Raja brachyura) in divisions 4.b, 4.c and 7.d (central and southern North Sea and eastern English Channel) (Link to advice)	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: Raja brachyura
Stock code: rjh.27.4bc7d
Assessment Component:
Assessment Year:2023
Purpose:Advice
Assessment Key: 18341
Stock Key: 261361

Year	Relative exploitable biomass	97.5%	2.5%	Landings	Discards	Relative fishing pressure	97.5%	2.5%

	Kilograms per hour			tonnes	tonnes	ratio
1997	0.128	0.295	0.056			1.53	2.8	0.83
1998	0.136	0.297	0.062			1.53	2.6	0.91
1999	0.143	0.303	0.067	164	71	1.54	2.3	1.02
2000	0.15	0.312	0.072	194	84	1.58	2.3	1.10
2001	0.157	0.319	0.077	206	89	1.63	2.4	1.10
2002	0.162	0.322	0.082	206	90	1.61	2.5	1.04
2003	0.169	0.328	0.087	206	89	1.54	2.5	0.93
2004	0.177	0.34	0.092	189	82	1.39	2.5	0.78
2005	0.19	0.365	0.099	159	69	1.19	2.3	0.62
2006	0.211	0.405	0.109	155	67	1.02	2.1	0.50
2007	0.238	0.463	0.122	166	72	0.91	1.93	0.42
2008	0.271	0.535	0.137	160	69	0.80	1.77	0.36
2009	0.313	0.626	0.156	163	95	0.70	1.60	0.31
2010	0.364	0.738	0.18	126	96	0.60	1.40	0.26
2011	0.429	0.875	0.211	157	78	0.51	1.22	0.22
2012	0.515	1.051	0.253	217	130	0.53	1.23	0.23
2013	0.6	1.221	0.295	253	73	0.50	1.17	0.22
2014	0.689	1.387	0.342	206	80	0.41	0.97	0.170
2015	0.786	1.552	0.398	225	73	0.35	0.82	0.145
2016	0.894	1.713	0.466	183	89	0.30	0.70	0.125
2017	1.015	1.873	0.55	241	93	0.28	0.65	0.122
2018	1.128	1.989	0.64	255	89	0.28	0.63	0.122
2019	1.23	2.063	0.733	253	107	0.27	0.60	0.117
2020	1.319	2.1	0.828	243	100	0.25	0.56	0.109
2021	1.421	2.152	0.938	299	122	0.25	0.58	0.112
2022	1.489	2.14	1.036	328	104	0.26	0.60	0.116
2023	1.543	2.11	1.128
Average	0.588	1.032	0.341	206	88	0.84	1.57	0.46

Fishing pressure

Stock size

2020

2021

2022

2021

2022

2023

Maximum sustainable yield

F_MSY

Appropriate

MSY B_trigger

Above trigger

Precautionary approach

F_pa,F_lim

Below ref.

B_pa,B_lim

Full reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable