-71- 



c 



A 

 T 

 C 

 H 



H 

 E 

 T 

 R 

 I 

 C 



T 

 

 N 

 S 



THOUSAflDS 

 120 



103 



80 



60 - 



40 . 



20 . 



18 



20 



30 



40 50 



EFFORT CSDF) 



60 70 



THOUSANDS 



Figure 10. a) Relation between catch (mt) and effort (SDF- 

 standard days fishing), 1969-79. 



b) Relation between CPUE (mt/SDF) and effort 

 (SDF), 1969-79. 



