Soil green algae of classes Trebouxiophyceae, Charophyceae and Ulvophyceae of Gomel some streets roadside lawns

In this article considers the results of the study the composition of green algae classes Trebouxiophyceae, Charophyceae and Ulvophyceae of roadside lawns of some streets of Gomel. Research methods: field, laboratory and cultural. Total in the soils of the studied streets in the city of Gomel identified 27 species of green algae, belonging to 16 genera, 13 families, 9 orders of the classes Trebouxiophyceae, Ulvophyceae and Charophyceae. Taxonomic analysis showed the predominance Trebouxiophyceae (66.7%), were least represented Ulvophyceae - 3.7%. Among the families dominated Chlorellaceae - 22.0%; Choricystidaceae and Klebsormidiaceae amounted to 11,0%. Most of the families included the 1-2 species, indicating a simplified organization of algal communities. Ecological analysis showed the predominance of soil algae H- and Ch-life forms (50.0% and 40.9% respectively). Taxonomic and ecological analysis of algal communities of the investigated soils is made. It is shown that the taxonomic and ecological structure of green algae in soils of roadside lawns depends on the degree of anthropogenic load. The restructuring of the taxonomic structure of algal communities with a change in the transport load. With the decrease of the transport load in 2014 and 2015 years shows an increase in species richness and expansion of the taxonomic diversity of green algae, 2016 year - in the early stages, there has been an increase of species richness of algae classes studied, followed by a slight decrease. With increasing distance from the roadway identified the expansion of species richness of algae. In the ecological respect the general patterns of algal community structure changes are noted with an average transport load intensity, as the distance from the roadway increases, the proportion of Ch-form algae decreases and the number of representatives of the H-life form increases.