Abstract
The degree of influence on the biotic component of ecosystems depends on the level of oil contamination present in the soil. To determine the dose-effect, the reaction of living objects of different levels of organization with the use of methods of toxicology, analytical chemistry and ecology was studied. It was found that the concentration of oil in the soil of 200 g/kg and above has a toxic effect on microorganisms: the toxicity index was 38 units, the decomposition rate of benzo [a] pyrene significantly decreases. It was found that increasing the dose of oil pollution nonlinearly affects the conditions of plant development. At the same time, plant components react less actively to changes in the concentration of oil in the soils of the coniferous-broad-leaved subzone than in the soils of the southern taiga. The use of Daphnia magna Straus as a test object showed that for animals the soil becomes acute with an oil content of more than 200 g/kg soil. Thus, a dose-effect is shown for microorganisms, plants and animals with oil contamination of various soils.
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