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Contemporary Problems of Ecology

2013 year, number 3

The Structure of Phytoplankton and Physicochemical Characteristics of the Kolyma River (Northeastern Siberia) in Summer

Institute for Biological Problems of Cryolithozone SB RAS, 677980, Yakutsk, Lenin аve., 41
Keywords: the Kolyma River, northeastern Siberia, phytoplankton, physicochemical characteristics, water quality


The first results of the study of phytoplankton and chemical composition of water of the entire Kolyma River are reported. The study revealed spatial structure of the phytoplankton communities in river sections with various hydrologic conditions. High diversity of phytoplankton in the Kolyma river was established. It was established that the physicochemical characteristics of water are determined by environmental factors, mainly permafrost soils. Water quality was estimated from phytoplankton bioindicators and chemical characteristics of water.