A. Yu. Levykh, D. V. Chernykh, D. V. Zolotov, R. Yu. Biriukov
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引用次数: 0
Abstract
This paper discusses the species composition and population structure of small mammals inhabiting the north-taiga landscape of the Nadym Hills (Yamalo-Nenets Autonomous Okrug, Russia) with an emphasis on catenary patterns in the intralandscape differentiation. Five small mammal species (Cl. rutilus, S. caecutiens, S. araneus, A. oeconomus, and E. sibiricus) typical for the north-taiga subzone of Western Siberia are recorded in different parts of a northwest-facing landscape catena (upland, saddle, slope, and floodplain). In terms of abundance, the northern red-backed vole (Cl. rutilus) predominates in all catena localities and in the landscape as a whole. Other species codominate in certain localities, with the exception of S. araneus, who is common only on the upland. Throughout the entire study area and in the upper localities of the catena, Cl. rutilus and S. caecutiens form the core of small mammal communities. The total abundance of small mammals and the abundance of the dominant species gradually decline along the slope (i.e., from the upland to the floodplain). Resident and propagating small mammal populations are present in all catena localities. The composition, structure, and parameters of small mammal communities change along the slope following changes in afforestation, wetting, plant species richness, vegetation structure, and microtopography. In all catena localities and throughout the entire study area, small mammal communities feature low values of the diversity, evenness, and sustainability indices and high values of the dominance index, which is determined by harsh natural and climatic conditions. However, their generally undisturbed structure is typical for natural subarctic communities, which indicates their sustainability.
期刊介绍：
Contemporary Problems of Ecology is a multidisciplinary periodical that publishes original works on the following subjects: theoretical and methodical issues of ecology, regional aspects of ecology, regional ecological disasters, structure and functioning of ecosystems, anthropogenic transformation of ecosystems. All basic aspects of modern ecology, including the most complicated interactions between living organisms and their environment, are presented. Some of the journal issues are dedicated to global changes in biological diversity at various levels of organization (populations, species, ecosystems) principles and methods of nature conservation.
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