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MANS NEED FOR THE BIOLOGICAL RESOURCES OF THE OCEAN
CERTAIN PROPERTIES OF THE OCEANS AS PRODUCERS OF BIOLOGICAL
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according Africa America amount anchovy animals annual antarctic approximately aquatic items Atlantic average Azov basin benthos biogenic biological resources biomass bottom calculations Caspian catch central coast coefficients comparatively completely concentrations considerable consumed continental countries currents depths determined distribution effectiveness elements energy entire estimate exploited factors feeding Figure fish productivity fishery Gulf important increased Indian Ocean inhabited intensive invertebrates Japan land layer less limited mackerel mainly marine masses million nature neritic North northern numbers obtained occur oceans organisms Pacific Pacific Ocean pelagic period phytoplankton plankton plants population possible present primarily primary production processes protein quantity reach regions relatively respect river runoff shelf significant slope South southern species surface Table temperature tons total catch trophic trophic levels tuna utilization vertical volume waters weight whales world catch world's oceans yield zones zooplankton