IMPACT OF TECHNOGENIC POLLUTION OF URBAN ENVIRONMENT ON INDICATORS OF VITALITY OF URBAN BIOTA (MOLLUSK FAUNA, SOIL MESOFAUNA, EPIPHYTIC LICHENS)

The article presents the results of ecological, chemical and bioindication assessment of urban
ecosystem of industrial city of the South of Ukraine. The dynamics of physical and chemical
parameters of soil, surface water and air in various functional areas of the city was analyzed. The complex index of pollution of environment components was determined. Bioindicative assess ment of the ecological state of the territory of urban ecosystem in terms of vitality of epiphytic lichen flora, soil mesofauna and freshwater mollusk fauna was fulfilled. Based on vital bioindicators, zones with different ecological state of the territory were differentiated. The toxic effects of various pollutants on living organisms and the tolerance of some species-bioindicators under anthropogenic load were analyzed. It was found that on anthropogenically transformed areas the amount of zoophages increases and homogenization of anamorphoscope composition of major groups of mesopotamians with the dominance of individual species is observed. In alkaline soils of the functional areas of urban ecosystem prevalence of calcicole — millipedes, pill bugs, gastropods was noted, which allows to use them to indicate the level of alkalization of soils. The degree of correlation between the viability of bio-indicators groups and complex pollution index of basic components of the environment of the city was defined. So, an inverse correlation between the vitality of epiphytic lichen flora (G,%) and the complex index (Pa) of environmental contamination (–0,80, p < 0,05), and direct correlation between the decline in the vitality of the soil mesofauna (G̅, %) and complex index (Zc) of soil contamination (0,84, p < 0, 05) was indicated. Thus, biomorphs of epiphytic lichen flora and separate groups of mesopotamians should be used as indicators of pollution of urban environment. Based on the fulfilled study the algorithm of complex ecological, chemical and bioindication assessment of ecological state of urban ecosystem of industrial city was proposed.

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