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Thornback ray (Raja clavata) in divisions 7.a and 7.f-g (Irish Sea, Bristol Channel, Celtic Sea North)
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DOI: 10.17895/ices.data.10224
Species: Raja clavata
Stock code: rjc.27.7afg
Assessment Year:2020
Purpose:Advice
Assessment Key: 13888
Stock Key: 169204

 
 
 
 
 
 
 
 
       

 



YearBiomass index HighLowLandings
     
 Kilograms per hour  tonnes
19931.262.10.41 
19941.382.120.64 
19952.173.331.02 
19961.742.590.89 
19971.722.760.67 
19982.233.271.19 
19991.872.780.96 
20001.171.850.49 
20011.892.90.87 
20021.822.621.02 
20032.053.011.09 
20044.377.850.88 
20051.692.480.89379
20061.812.820.81264
20071.472.20.74238
20082.063.061.05713
20092.623.611.62671
20102.583.541.62780
20111.792.541.05944
20121.932.631.231165
20133.264.412.11048
20143.424.72.14790
20152.183.091.26903
20164.646.32.97861
20175.477.253.69878
20186.799.174.41840
20196.969.154.77960
Average2.683.861.5762

 


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