Biodiversity of epiphytic cyanobacteria and algae in conditions of road pollution in Ufa

Abstract

Studies of epiphytic cyanobacterial-algal cenoses along the highways of Ufa were carried out on five species of woody plants: deciduous (Betula verrucosa Ehrh., Populus nigra L., Tilia cordata Mill., Sorbus aucuparia L.) and coniferous (Picea obovata Ledeb.). A large species diversity of algoepiphytes from 5 divisions, 7 classes, 12 orders, 30 families, 48 genera and 85 species and intraspecific taxa was revealed. Epiphytes of the divisions Chlorophyta and Cyanobacteria dominated (41 and 38 species and intraspecific taxa, respectively), leading families - Oscillatoriaceae and Chlorococcaceae, genera - Phormidium, Leptolyngbya, Nostoc, Chlorococcum.The ecological analysis made it possible to identify six morphotypes. The predominance of colonial-coccoid algae was shown, which made up 31 taxa (36.5 % of the total). Trichal forms take the second place - 26 species (30.6 %), coccoid immobile - 22 species (25.9 %). The spectrum of ecobiomorphs of epiphytic cyanoprokaryotes and algae included 11 life forms: Ch32P16C11CF6aer6H4X4PF3hydr1B1аmph1. Oligoatmophytes have the highest species representation -77 %, mesoatmophytes - 17 %, the group of polyatmophytes is sharply depleted - 6 %. Comparison of the obtained results with the control in ecologically clean habitats showed no difference in the taxonomic and ecological composition of cyanobacterial-algal growths, the number of living cells.