Water Bodies of Central Yakutia as Habitats of Rare and Protected Aquatic Plants Under the Cryolithozone Conditions

For Central Yakutia the data on the distribution and ecology of rare aquatic species, such as Hydrilla verticillata, Potamogeton maackianus, P. rutilus and protected species, such as Nuphar pumila and Nymphaea tetragona, are summarized. Most occurrences of these species have been found in water-erosion lakes of the valley complex of the Lena, Aldan, and Amga rivers. The combination of microclimate of large river valleys, the presence of taliks, and the hydrological and hydrochemical factors together ensure successful survival of diasporas of these rare species under the conditions of Central Yakutia. All water bodies belong to small lakes, and are situated in river valleys and are at the stage of maturity (old age). Their waters are neutral or slightly alkaline with low mineralization. The ranges of the main ecological parameters of habitats for each species are given. We recommend including Hydrilla verticillata, Potamogeton maackianus, and P. rutilus in the regional Red Data Book with the status 3d (rare species situated on the edge of their range).

Hydrilla verticillata, Potamogeton maackianus, Potamogeton rutilus, Nuphar pumila, Nymphaea tetragona, bioclimatic indicators, heat supply, hydrophytes, new records, succession, Hydrilla verticillata, Nuphar pumila, Nymphaea tetragona, Potamogeton maackianus, Potamogeton rutilus