Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Thornback ray (Raja clavata) in Subarea 4 and in divisions 3.a and 7.d (North Sea, Skagerrak, Kattegat, and eastern English Channel)
Species:	Stock Assessment Graphs
Stock code:	rjc.27.3a47d
Assessment Year:	2019
Key:	13100


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	F
Fishing pressure units	Year-1
Stock size description	Biomass index
Stock size units


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	SSB	Landings
1993	0.435382530059811
1994	0.290812398273541
1995	0.278503697562762
1996	0.632318537063013
1997	0.601464919504578
1998	0.234918733019587
1999	0.449233931482127
2000	0.378395534471854
2001	0.406531104939111
2002	0.486368948679045
2003	0.45834201087349
2004	0.427635505519916
2005	0.529004077089453
2006	0.933034303605261
2007	0.594995849648199
2008	1.66404700445799
2009	1.15598664440106	1128.76881
2010	0.882645564821866	1335.80699
2011	0.583092771013128	1281.60014
2012	1.6853841835339	1589.19802
2013	1.74787502357094	1868.29866
2014	2.39465200532338	1905.26045
2015	2.21846551768028	1644.80436
2016	2.11622954644457	1825.95545
2017	2.05097007066403	1788.73102
2018	2.36370958629712	2218.62448

Custom reference points

CustomRefPointName	CustomRefPointValue	CustomRefPointNotes
custom1
custom2
custom3
custom4
custom5

Custom fish data column names

CustomName1	CustomName2	CustomName3	CustomName4
IBTS-Q1	IBTS-Q3	BTS-ENG-Q3	CGFS-Q4

Custom fish data

Year	Custom1	Custom2	Custom3	Custom4
1993	0.555361277822409	0.568693581985914	0.432730556512154	0.184744703918767
1994	0.151127073389726	0.0722150580299574	0.426833539757439	0.513073921917042
1995	0.152355748783139	0.184406308897927	0.418092836245589	0.359159896324394
1996	0.360001890269836	1.52038488245214	0.61456061089607	0.0343267646340083
1997	0.873588204716223	0.560956254339847	0.522571072858137	0.448744146104103
1998	0	0	0.431460750937637	0.50821418114071
1999	0.0970653560795804	0.457791885725622	0.854131670039911	0.387946814083395
2000	0.240820377108832	0.0992957047911913	0.660793896379978	0.512672159607416
2001	0.312083549926752	0.211486955659161	0.667836878062802	0.43471703610773
2002	0.332971031614763	0.684753496676917	0.384251120674834	0.543500145749666
2003	0.532016445347573	0.104453923221903	0.815129755151546	0.381767919772937
2004	0.158499125750201	0.0838210494990576	1.13907363359107	0.329148213239331
2005	0.663484712442701	0.0902688225374467	0.441270874252882	0.920991899124784
2006	1.72628892774444	0.618986211685349	0.641300199025614	0.745561875965647
2007	0.31085487453334	0.0232119829382006	1.01081048408732	1.03510605703394
2008	3.57913142101035	0.65380418609265	1.41691127081719	1.00634113991176
2009	2.07277538868674	0.497768078563635	1.075997282534	0.977405827819854
2010	0.512357639052975	0.386866382303343	1.61549951860881	1.01585871932233
2011	0.0872359529322811	0.589326455708759	0.956286623125996	0.699522052285474
2012	3.71059968810548	0.333994643388553	1.37066657694529	1.32627582569629
2013	0.932564623600019	3.10008927685745	0.782895567155056	2.17595062667121
2014	1.54935967109305	3.53466917964488	2.14899800865532	2.34558116190027
2015	1.76929256651387	2.88602321198294	2.07922505373913	2.13932123848519
2016	0.734747885260621	3.60817379228251	1.49970600712857	2.62229050110657
2017	3.59879022730495	1.43656383295308	1.62832292315057	1.54020329924752
2018	0.986626340910165	3.69199484178157	1.96464328966709	2.81157387282966

Sensivity data