Home – Home – Jornals – Contemporary Problems of Ecology 2010 number 4

Diatom complex found in the bottom sediments of mountainous, oligotrophic lakes of the Amguema river basin (Ervynajgytgyn, Matachingajgytkhyn, Ekitiki) is presented for the first time. In total, 385 species and subspecies of Bacillariophyceae from 69 genera were found in the sediments of the above-mentioned lakes. More than a quarter of the species comprising the revealed complex belongs to taxa characterized by limited distribution; half of them are characterized as rare forms. For each taxon, the data on the frequency of occurrence for Beringia region are provided. Three new combinations are suggested.