In the investigated water bodies 91 species represented by 99 infraspecific taxa (infr. taxa) of Sphaeropleales are revealed. found Maximal number of species 62 (65 infr. taxa) in the rivers followed by reservoirs, 58 species (62 infr. taxa); lakes, 29 species (33 infr. taxa); swamps, 55 species (61 infr. taxa) and ponds, 53 species (56 infr. taxa) was recorded. Similarity between all types of water bodies is observed at a level of Desmodesmus genera and the rivers and reservoirs are most similar. The lakes and ponds are characterized by the greatest specificity. According to the literary analysis, altogether 122 species represented by 137 infraspecific taxa of Sphaeropleales are cited for different water bodies of Iran, including 60 species (67 infr. taxa) revealed by author.

Keywords: Sphaeropleales, species composition, leading genera, water bodies of different types, Iran

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