Zygnematophyceae (Streptophyta) of northen region of Russian Federation: review of studies and taxonomy
The species composition of the conjugate algae from six floristic provinces located in circumpolar and polar regions of Russia was reviewed. Review of studies of Zygnematophyceae of these floristic provinces is given. For these regions 1013 species of the conjugate algae are known. Cosmarium, Closterium, Staurastrum and Euastrum are dominant genera in all waterbodies of the regions. Their proportion is different at different territories. The species diversity of the genus Staurastrum decreases from West to East.