Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Blonde ray (Raja brachyura) in divisions 4.c and 7.d (southern North Sea and eastern English Channel)
Species:	Stock Assessment Graphs
Stock code:	rjh.27.4c7d
Assessment Year:	2021
Key:	15669


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	F
Fishing pressure units
Stock size description	B_index
Stock size units	tonnes


Fish reference points

Management plan	SSB_MP
Management plan	F_MP
MSY approach	MSYB_trigger
MSY approach	F_MSY
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	Discards
1988	0	0	0
1989	0	0.0470908712602056	0.207226307681945
1990	0	0	0
1991	0	0	0
1992	0	0	0
1993	0	0	0
1994	0	0.0129009658415406	0.0415625539954868
1995	0	0.123350057152099	0.300730366067252
1996	0	0	0
1997	0	0.0613496268222558	0.257867046553259
1998	0	0.147243273707177	0.437043343919791
1999	0	0.0816818930313612	0.189033827515862
2000	0	0.012734663029584	0.0425300188733585
2001	0	0.100078198713032	0.245787055384016
2002	0.00908254958193718	0.0854219762775481	0.195871972405452
2003	0	0.231537878888451	0.511897065942134
2004	0	0.0230323698180484	0.0731907919445117
2005	0	0	0
2006	0	0.0880724108633946	0.205314954567929
2007	0.0194694941857647	0.295270679076282	0.70092328954136
2008	0	0.00898232189407499	0.0296329846873034
2009	0	0.218701865810965	0.637162860661313	158.21915	5.58
2010	0	0.123317261619593	0.448496745795389	132.79325	35.336
2011	0	0.238259733124679	0.630108618464476	143.57883	258.66163
2012	0	0.731188232117916	2.18624521095714	193.55944	94.73193
2013	0.00908929724121383	0.155128511251968	0.387564368205124	239.44596	44.85653
2014	0.111317644302546	0.660534538534167	1.46296197486177	181.35685	107.5748
2015	0.0141909887526841	0.599512119182201	1.99950240861664	191.078	148.18109
2016	0	0.645181748803386	1.77640813522586	147.251	96.1
2017	0.109818990601685	0.67838114534436	1.51914698368345	198.55097	236.59752
2018	0.0103105343681799	0.464178946845508	1.29657145916452	251.23831	196.5788
2019	0.0414107201221575	0.709189382933949	1.69252410221777	251.84936	247.94367
2020				240.76534	83.10472

Custom reference points

CustomRefPointName	CustomRefPointValue	CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5

Custom fish data column names

CustomName1	CustomName2	CustomName3	CustomName4
low	mean	high	index A

Custom fish data

Year	Custom1	Custom2	Custom3	Custom4
1988	0	0	0
1989	0	0.0470908712602056	0.207226307681945
1990	0	0	0
1991	0	0	0
1992	0	0	0
1993	0	0	0
1994	0	0.0129009658415406	0.0415625539954868
1995	0	0.123350057152099	0.300730366067252
1996	0	0	0
1997	0	0.0613496268222558	0.257867046553259
1998	0	0.147243273707177	0.437043343919791
1999	0	0.0816818930313612	0.189033827515862
2000	0	0.012734663029584	0.0425300188733585
2001	0	0.100078198713032	0.245787055384016
2002	0.00908254958193718	0.0854219762775481	0.195871972405452
2003	0	0.231537878888451	0.511897065942134
2004	0	0.0230323698180484	0.0731907919445117
2005	0	0	0
2006	0	0.0880724108633946	0.205314954567929
2007	0.0194694941857647	0.295270679076282	0.70092328954136
2008	0	0.00898232189407499	0.0296329846873034
2009	0	0.218701865810965	0.637162860661313
2010	0	0.123317261619593	0.448496745795389
2011	0	0.238259733124679	0.630108618464476
2012	0	0.731188232117916	2.18624521095714
2013	0.00908929724121383	0.155128511251968	0.387564368205124
2014	0.111317644302546	0.660534538534167	1.46296197486177
2015	0.0141909887526841	0.599512119182201	1.99950240861664
2016	0	0.645181748803386	1.77640813522586
2017	0.109818990601685	0.67838114534436	1.51914698368345
2018	0.0103105343681799	0.464178946845508	1.29657145916452
2019	0.0414107201221575	0.709189382933949	1.69252410221777	0.709189382933949
2020

Sensivity data