Mikhail Shimaraev

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Deep-water renewal in Lake Baikal (Siberia), the world's deepest lake and largest lake by volume, is relatively fast. Water age calculated from tritium and helium as well as from chlorofluorocarbons does not exceed 19 yr. Relative saturation of dissolved oxygen typically exceeds 80%. The equation of state of Baikal water was determined including the(More)
It is suggested that existence of "dwarfs" and "giants" among Baikal gastropods depends on several factors. "Dwarfs" occurs in habitats 1) where sedimentation rate is low and thick silt layer is absent (the small shell without long periostracal nodules does not allow the animal to stay on the soft sediment surface; 2) where there is hard substratum suitable(More)
The vertical distribution of microorganisms during spring deep-water renewal in Lake Baikal was studied. The downward advection of trophogenic waters was found to create conditions for the extensive growth of microorganisms capable of decomposing and mineralizing organic carbon, nitrogen, and phosphorus in deep water layers. These processes occur annually(More)
We investigated upwelling events in the pelagic area of Lake Baikal that developed during summer stratification (July–November) using a combination of in situ and satellite observations. These upwellings appear in the centres of local cyclonic macrovortices with compensatory downwelling located on their periphery in coastal areas. The average duration of(More)
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