Algal flora in the springs of Izhevsk

This article provides a taxonomic list of spring algal flora in the city of Izhevsk with its area, which includes 69 species of 5 divisions. In the list of algal species, there is a core assemblage of algal flora which consists of rheophilic algae typical for eucrenes (Odontidium mesodon, Meridion circulare, Ulnaria ulna, Achnanthidium minutissimum, Gomphonema parvulum) and also frequently occurring Audouinella pygmaea, Phormidium umbilicatum, Frustulia crassinervia and Nitzschia linearis Low compositional similarity in springs is a result of big differences in composition of species with low frequency of registering, among them there is a group of bryophylic algae, which are associated with mosses growing near springs (Odontidium mesodon, Frustulia crassinervia). There are also rare species Dactylococcopsis rhaphidioides f. falciformis (Cyanophyceae) and Gomphonema. liyanlingae (Bacillariophyceae) on the list. The most species of the list belong to Bacillariophyceae (51 species of 27 genera) and among them the most species are from genera Nitzschia (6 species), Pinnularia (5 species), Cymbella (4 species), Gomphonema (4 species). Also the data about some spring water characteristics, such as temperature, pH, total dissolved solids, concentration of nitrates, sulfates, silicon and chlorides are provided. Ecological role of springs in urban environment as unique water habitat is also discussed.