Abstract
Large-scale diatom communities and diatom complexes of lake sediments researches in the Euro-Arctic region have been carried out. The high efficiency of bioindication of water quality and the state of ecosystems based on diatoms have been shown for the water quality assessment and anthropogenic loads rationing on water resources of high latitudes. Diatom assemblages from lake sediments of different types of aquatic ecosystems reflect the present-day warming of the Arctic climate and the effects of aerotechnogenic pollution. Diatom assemblages of surface (0–1 cm) layers of lake sediments could well serve for the integral assessment of the state of ecosystems and water quality. Diatoms diversity of the Green Belt of Fennoscandia in the territory of the Murmansk region has been investigated.
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