| Summary: | During 1985–1990 the density of the moose (Alces alces) population in the peninsular territory (Samarskaya Luka National Park and Zhiguliovski Reserve in the middle Volga Region) was studied. It was found that the natural cyclicity of the population differed between regions. The lowest intensity of oscillation in moose density was in the population nucleus, where the wavelength equaled 5 years. In the interflow areas the wavelength was 2–4 years. Oscillatory dependence of the moose density in the nucleus on the density of other trophic level mammals such as the mountain hare (Lepus timidus), red fox (Vulpes vulpes), wolf (Canis lupus), and pine marten (Martes martes) was also evident.
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