Diatoms of Modern Bottom Sediments in Siberian Arctic
O. V. Palagushkina1, L. B. Nazarova2, S. Wetterich3, L. Shirrmeister3
1 Kazan Federal (Privolzhskiy) Universtiy, Institute of Mаnаgement and Territorial Development
2 Alfred Wegener Institute of Polar and Marine Research; Kazan Federal (Privolzhskiy) Universtiy, Institute of Mаnаgement and Territorial Development
3 Alfred Wegener Institute of Polar and Marine Research
opalagushkina@mail.ru
Keywords: Arctic water reservoirs, diatoms, bottom sediments, ecology, complexes
Pages: 557-569
Abstract
Investigation of the number of species and ecology of diatoms of modern bottom sediments in water bodies of the arctic polygon tundra in three sub-regions of Northern Yakutia was carried out. As a result, 161 taxons of diatoms were determined; the determinant role of depth, electroconductivity, pH of the medium, and geographic latitude in their distribution was confirmed, two complexes of species with respect to the leading abiotic factors were distinguished. The diatoms of the first complex prefer shallow water bodies of high latitudes with neutral and slightly alkaline water, and relatively high electroconductivity. The second complex is confined to the water bodies of lower latitudes with small electroconductivity, neutral and slightly acidic water.
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