Heavy metal speciations in plankton, suspended matter, and recent bottom sediments of the East Pacific Ocean

In the book based on original data speciations of iron, manganese, zinc and copper in dissolved and suspended phases, as well as in biota are under consideration. It is shown that migration forms of metals in river runoff and ocean water are determined by fundamentally different geochemical processes. Great importance of the "river - sea" geochemical barrier in transformation of original (i.e. in the river run-off) speciations of metals is established. It is shown that distribution of the studied elements in the ocean is closely connected with processes of biological production. Regular changes in speciations of the studied elements in ocean water column are revealed. Role of biological processes in transportation of the elements in the ocean water column is estimated.