The Population of Small Mammals in the Vicinities of Torey Lakes (Southeast Transbaikalia) During the Dry Climatic Phase: Dynamics and Connection with Precipitation
Yu. A. BAZHENOV
Institute of Natural Resources, Ecology and Cryology of SB RAS, 672014, Chita, Nedorezov str., 16a
Keywords: степные экосистемы, динамика численности, количество осадков, Даурская степь, метод ловчих канавок, steppe ecosystem, population dynamics, precipitation, Daurian steppe, method of trap grooves
Abstract
Population and number dynamics of small mammals in the vicinities of Torey lakes (South-Eastern Transbaikalia, Russia) were characterized between 2008 and 2017. The monitoring was carried out against the backdrop of the complete drying out of these some of the largest lakes in the region. The stability of the fauna of small mammals was revealed over an 80-year period, although the structure of communities rearranged itself significantly as a result of changes in moistening of the territory. Xerophilous species of mammals had an advantage in the period of studies in the dry climate phase. Correlation analysis showed a possible link of population dynamics of some common species of small mammals with precipitation of current and previous years or with the sum of precipitation of some spring (in one case, winter) months.
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