Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Thornback ray (Raja clavata) in divisions 8.a-b and 8.d (Bay of Biscay)
Species:	Stock Assessment Graphs
Stock code:	rjc.27.8abd
Assessment Year:	2022
Key:	17430


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


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	0.3
	B_pa
	F_lim	1.7
	F_pa

Age and Length

Recruitment	0
F

Fish data

Year	Low SSB	SSB	High SSB	Landings	Low F	F	High F
2009	0.14	0.31	0.57	239	1.27	2.32	5.87
2010	0.18	0.37	0.63	246	1.3	2.39	6.04
2011	0.18	0.36	0.63	217	0.98	1.79	4.37
2012	0.17	0.37	0.65	227	1.06	1.88	4.54
2013	0.2	0.42	0.73	244	1.15	2.02	4.63
2014	0.24	0.48	0.82	241	0.98	1.72	3.97
2015	0.22	0.5	0.87	266	0.94	1.65	3.93
2016	0.27	0.58	0.97	211	0.7	1.29	3.28
2017	0.35	0.7	1.09	232	0.65	1.21	3.05
2018	0.43	0.8	1.22	273	0.64	1.21	3.01
2019	0.45	0.85	1.28	266	0.54	1.03	2.43
2020	0.51	0.92	1.37	266	0.51	0.97	2.37
2021	0.52	0.95	1.42	305	0.51	1.02	2.5
2022	0.47	0.96	1.45

Custom reference points

CustomRefPointName	CustomRefPointValue	CustomRefPointNotes
MSY Btrigger	0.5
Blim	0.3
custom3
custom4
custom5

Custom fish data column names

CustomName4	CustomName5	CustomName6
Index lower	Biomass index	Index higher

Custom fish data

Year	Custom4	Custom5	Custom6
2009	7.72	101.95	218.85
2010	0	240.27	647.65
2011	4.19	179.49	442.77
2012	15.29	156.74	362.73
2013	24.8	225.35	538.79
2014	0	319.62	727.34
2015	11.67	177.63	406.43
2016	26.11	262.98	565.89
2017
2018	105.19	651.45	1529.5
2019	45.71	367.11	971.5
2020	232.58	867.86	1809.27
2021	207.03	691.76	1399.83
2022

Sensivity data