of phytoplankton is less strongly expressed than in the neighboring neritic 

 communities, but more strongly than in oceanic communities. In the band 

 of great abundance of large herbivorous Copepoda , located along the edge 

 of the shelf in the region of the Peru Current, there is quite intensive 

 grazing of phytoplankton even when in the neighboring neritic region the 

 concentrations of phytoplankton are high, and it is clearly underutilized 

 (Heinrich, 1974b). 



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