The study of the Southern Bug River lower part of the phytobenthos by scanning electron microscopy revealed 16 representatives of diatoms Centrophyceae class of 8 genera, wherein the species composition of centric diatoms significantly expanded by taxa of species (10) and genera (Conticribra, Thalassiosira) rank.

Keywords: Southern Bug River, phytobenthos, Bacillariophyta, Centrophyceae, scanning electron microscopy studies

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