“…In the soils of the Steppe of Ukraine, surface films of blue-green algae, resistant to drying and strong insolation, develop. Chestnut soils and solonetzes are characterized by the development of the nostoc-cytone complex and diatoms [Olkhovych et al, 2022]. 36 species of algae were identified on the surface of the studied dumps from 5 divisions (Eustigmatophyta, Chlorophyta, Cyanophyta, Xanthophyta, Bacillariophyta), from 7 classes (Chlorophyceae, Eustigmatophyceae, Charophyceae, Cyanophyceae, Bacillariales, Bacillariophyceae, Xanthophyceae), 13 orders (Achnanthales, Chlorococcales, Volvocales, Protosiphonales, Scenedesmales, Trebouxiales, Klebsormidiales, Chlorellales, Eustigmales, Oscillatoriales, Nostocales, Mischococcales, Bacillariales).…”