Singularity of Flora in Southern Water Basin of OB-Irtysh Interfluve of Western Siberia

Aquatic flora of more than 355 different types of lakes, 18 medium and small rivers, including numerous ponds and temporary pools has been studied by stationary and route methods. Singularity of aquatic flora of Ob-Irtysh interfluve and specific distinguishes were considered. The different ways of allocating of the degree of individual flora, which might be expressed by different indicators were suggested. These indicators include the relict elements or endemic species found among aquatic flora. In addition, the singularity and specificity of flora are characterizing by ecotopes with specific species and plant groups at the borders of their habitats. Singularity of aquatic flora can be expressed through the features of life forms of single species.