Arabadzhy-Tipenko L. Ecological features of Cyanoprokaryota of the Northwest Azov Sea region

The purpose of the work is to establish the ecological characteristics of communities and species of Cyanoprokaryota in the various ecosystems of the Pryazov National Natural Park. In the territory of the National Natural Park, there are 124 types of Cyanoprokaryota, including 127 internal taxis. Systematically found species belong to the Cyanophyceae class, comprising 3 subclasses, 6 rows, 18 families and 33 genera. The ecotopic diversity of the study region Cyanophyceae is represented by eight groups and transitional forms. The basic species of the flora is concentrated among aquaculture-suburban forms, which are 45.5%. Aquatic species, which account for 17.4% of the species of Cyanophyceae, play an important role in regional flora. Sensitivity to the effects of salinity depends on the type of ecosystem. Aqual and terrestrial-subaerophytic forms are most sensitive to the influence of salinity in steppe cenoses, aqual-subaerophytic - in sandy soils, subaerophytic, aqua-terrestrial, terrestrial, aerophytic - in salt marshes, eurybiont - in steppes and reservoirs. Gradient analysis allowed to obtain estimates of range indicative values for cyanoprokaryotic species for phytoindication of the salinity regime of the ecotope. Comparison of phytoindication estimates and the level of salinity of water in aquatic ecosystems allowed to find a connection between them, which can be described by the Hill equation.