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Cyclicity of the European water vole population as a factor of biodiversity in ecosystems of Western Siberia |
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| Authors: | Yu N Litvinov V Yu Kovaleva V M Efimov Yu K Galaktionov |
| Institution: | 1. Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of Sciences, ul. Frunze 11, Novosibirsk, 630091, Russia 2. Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 10, Novosibirsk, 630090, Russia 3. Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russia |
| Abstract: | Population outbreaks of the European water vole (Arvicola amphibius = Arvicola terrestris) in the northern forest-steppe of Western Siberia have been analyzed over more than 100 years. The results show that the period of the A. amphibius population cycle averages 8 years and its amplitude reaches a factor of 103–104, with population outbreaks leading to large-scale rearrangements in the ecosystem. In particular, the abundance of other species in the murine rodent community decreases with a 1-year lag, while the abundance of myophagous predators increases in the last year of the outbreak or in the next year. |
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