New records and rare taxa of the genus Eunotia Ehrenberg (Bacillariophyceae) for the diatom flora of Serbia

Abstract

Diatoms inhabiting different types of substrate including stone surfaces, sand, mud, filamentous algae and submerged mosses were studied in the Dojkinci River (Stara planina mountain, Serbia). In total 18 Eunotia taxa have been observed, among which three are recorded for the first time in Serbia (Eunotia circumborealis, E. paludosa and E. boreoalpina) and six are rarely recorded taxa for the Serbian diatom flora (E. diodon, E. exigua, E. praerupta, E. subherkiniensis, E. tetraodon and E. flexuosa). The morphological features, as observed by light microscopy (LM), are described for each taxon, as well as distribution, locality, altitude, substrate and physico-chemical parameters of water samples.