Zoobenthos of the lake Bolshoi Kharbei (Bolshezemelskaya tundra): modern state and analysis of retrospective data

The assessment of modern state of zoobenthos of the lake Bolshoi Kharbei (Bolshezemelskaya tundra) is given in comparison with data of retrospective researches. Physical and chemical parameters of surface water, composition and structure of bottom biocenosis are examined, dominating groups of zoobenthos are revealed. Distribution of bottom organisms on gradient of depth and types of ground is described.