[Mathematical simulation of accumulation of opportunistic micromycetes in petroleum-polluted soils].

The impact of pollution of different types of soils (leached chernozem, grey wood and dark-grey wood soils) with petroleum and its products on the size, species-specific composition, and accumulation of opportunistic micromycetes was studied in long-term field microallotment and laboratory conditions. Petroleum and its refining products were shown to increase the size of micromycetes and to change their structure and species diversity. A mathematical model has been developed, which describes the time course of changes in the size of mushroom propagules under different environmental conditions.