THE DIATOMS <i>(PENNATOPHYCEAE, BACILLARIOPHYTA) </i>OF THE LAKES OF THE SHUYA RIVER BASIN (KARELIA)
A total of 202 species and varieties of pennate diatoms from 53 genera were found during our scanning electron microscopy study of phytoplankton from the lakes of the Shuya River basin. Among them there are 42 taxa new to the flora of Karelia, 12 of them being new to Russia. The maximum species diversity has been recorded in the lakes Pryazhinskoe, Vokhtozero and Kroshnozero. Members of the genera Asterionella, Cocconeis, Eunotia, Fragilaria, Gomphonema, Hannaea, Sellaphora, Surirella, Tabellaría and Ulnaria are the most widespread in the waterbodies under study.