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Thornback ray (Raja clavata) in Division 9.a (Atlantic Iberian waters)
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DOI: 10.17895/ices.data.10217
Species: Raja clavata
Stock code: rjc.27.9a
Assessment Year:2020
Purpose:Advice
Assessment Key: 13869
Stock Key: 169207

 
 
 
 
 
 
 
 
       

 



YearBiomass IndexLandings
   
 Kilograms per hourtonnes
19900.95 
19910.75 
19921.07 
19930.85 
19940.37 
19950.31 
19960.37 
19970.73 
19980.5 
19990.12 
20000.64 
20010.58 
20020.45 
20030.59 
20040.43 
20050.83 
20060.67 
20070.98 
20080.59 
20090.86768
20101.03725
20111.35950
20121.19764
20131.68809
20141.28800
20151.69697
20161.37682
20172.08744
20181.98806
20192.28802
Average0.95777

 


 
 Fishing pressure Stock size
  201720182019  201720182019
Maximum sustainable yieldFMSYUnknown MSY BtriggerUndefined
Precautionary approachFpa,FlimUnknown Bpa,BlimUndefined
Management planFMGTNot applicable BMGTNot applicable
Qualitative evaluation-Unknown -Increasing