Abstract

The species diversity and the quantitative characteristics of zooplankton in the Vatinskii Egan River have been studied in its middle and lower reaches. The river suffers considerable oil pollution. The zooplankton community of the river has been shown to have a relatively stable species structure in river reaches with different level of oil pollution. Zooplankton in taiga rivers running over swampy territories cannot be used as a reliable characteristic of the level of oil and oil product pollution, as it has a high recovery potential because of the very small size of water bodies on the catchment area. For the bioindication of oil pollution with the use of zooplankton, the most informative are the proportions of species within each group and the quantitative Shannon and Pantle–Buck indices, which account for the level of representation of each species in the community.

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