Zoobenthos of different type lakes at western slope of Pre-Polar Urals (Maliy Patok river basin)

Zoobenthos of 17 different lakes of Maliy Patok river basin on the territory of national park «Yugyd Va» was studied. For the first time the data on quantitative zoobenthos development, fauna composition of bottom or-ganisms at Western slopes of Pre-Polar Urals was obtained. Mountain lakes are characterized by low benthos biomass compared with the lakes located on the boggy valley of the river. Differences in zoobenthos composi-tion in lakes with fish and in fishless lakes were estimated.