Soil algae of class Chlorophyceae of Gomel (Belarus) streets roadside lawns

In this article presents the results of studying the composition of green algae of class Chlorophyceae soils of roadside lawns in some streets of the city of Gomel. Research methods: field, laboratory and culture. In total 20 species of green algae belonging to 12 genera, 9 families, 4 orders of class Chlorophyceae were identified. Algae of the order of Volvocales and Protosiphonales predominated (30% each). Algae of the order of Chroococcales accounted for 25%, Scenedesmales accounted for 15%. Among the families the largest number of species characterized Chlamydomonadaceae (30%). Less represented were Chlorosarcinaceaea and Chlorococcaceae (20% each). The families Actinochloridaceae, Neospongiococcaceae, Cylindrocapsaceae, Bracteacoccaceae, Oocystaceae, Scenedesmaceae included 1 species. Ecological analysis showed that all the Chlorophyceacea detected are edaphophilic. Most species were representatives of the Ch-life form (62%). Less represented in the spectrum of life forms were species of C- and X-forms (27% and 11%). It is shown that as the transport load decreases, an increase in the amount of Chlorophyceacea in lawn grass occurs due to the expansion of the Chlorococcales order in the groupings. In the soil of almost all the streets, there is a tendency to expand the species richness of Chlorophyceacea with increasing distance from the roadway. On all sites the prevalence of algae of the Ch-life form remained. At the same time, as the intensity of the transport load decreases, an increase in the number of Ch-form species is noted, which is related to the expansion of the species composition of algae of less disturbed sites. At most sites in 5 m from the roadway, an increase in the proportion of algae of the C-life form in the spectra is noted, which is associated with an improvement in the conditions for algae: an increase in soil moisture and a certain decrease in the effect of exhaust gases.