The Soil Chemical Properties Influencing the Oribatid Mite (Acari; Oribatida) Abundance and Diversity in Coal Ash Basin Vicinage

The samples of two technogenic sediments (MOS, coal ash sediment; MOD, a mixture and natural soil) soils (MOM, meadow; MOF—forest; both Cambisol Dystric) in the vicinage basin were studied. We evaluated risk element concentrations select-ed chemical microbiological parameters to determine their influence on community structure Oribatida. High various toxic elements, alkaline pH, low hu-midity negatively affected abundance oribatid mites. microbial indicator values showed that soil formed could effectively use organic carbon. However, considering wide C/N ratio substrates, process matter (SOM) decomposition was slowed down, thus nutrients less available for mites, which be among reasons why we did not find any individual mite MOS. In however, found representatives three species, but only Tectocepheus velatus sarekensis established an abundant at highly contaminated site. Anthropogenic pressure resulted selection r-strategists, became dominant reduced whole community’s species’ diversity. Therefore, consider it suitable improper human intervention ecosystem.