-99- 



Figure 22. Main quantitative interactions between groups 

 of animals in the Southern Ocean. Figures in boxes denote 

 annual production at each stage and those alongside lines, 

 annual consumption, in millions of tons (From Everson, 

 1977) . 



PRIMARY 

 PRODUCTION 



6 500-33.000 



HERBIVORES 



KRILL 

 >200 



OTHER 

 HERBIVORES 



200? 



CARNIVORES 



CRA8EATER 

 SEAL 



OTHER 

 SEALS 



BIRDS 



SPERM 

 WHALES 



