Fig. lu. Times (months) of onset of biologic spring in arious regions of 

 the boreal Atlantic (Pavshtiks, 1968; Pavshtiks, Timokhina, 1972; Colebrook, 

 Robinson, 1965). 



Fig. 11. Times of maximum development t 

 phytoplankton and of the biomass of 

 copepods in the southern boreal waters 

 of the open Atlantic (Colebrook, Robinson. 

 1965). 1, Phytoplankton number; 

 2, Copepod number (relative values). 



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