Ecological and geographical structure of bird population on the Onekotan Island (the northern Kuril islands)
https://doi.org/10.55959/MSU0579-9414.5.80.4.11
Abstract
The ecological and geographical structure of bird population on the Onekotan Island was analyzed using the technique of route count along the transects of unlimited width. The avifauna of the Onekotan Island forms under the system of general zonal-landscape and altitudinal-belt patterns and unites ecological groups of marine and terrestrial species, including mountain ones (n = 7). The zoogeographic originality of the avifauna is due to a combination of elements of the Pacific, Siberian, Far Eastern island, and Arctic faunistic complexes, as well as Siberian-American and widespread species. The species richness, bird population density, and abundance of most species decrease with altitude. There are 26 species in the avifauna of the forest belt, 17 in the subalpine belt, 14 in the alpine belt, and 29 species in the marine and coastal areas, with population densities of 559, 306, 221, and 129–223 ind./km², respectively. Dominants or subdominants in the population of terrestrial habitats include the Buff-bellied Pipit, Brown-headed Thrush, Siberian Rubythroat, Middendorff’s Warbler, Arctic Warbler, and Pine Grosbeak. Seven species numerically dominate in the population of the marine area, namely Harlequin Duck, Red-faced Cormorant, Slaty-backed Gull, and Pigeon Guillemot (in the coastal part), and Northern Fulmar, Common Guillemot, and Tufted Puffin (at a considerable distance from the coast).
Supporting agencies: The study was carried out under the Program for the development of the Interdisciplinary scientific and educational school of the Lomonosov Moscow State University “The Future of the Planet and the Global Environmental Changes”, the State Assignment
About the Authors
A. A. Romanov
Lomonosov Moscow State University
Russian Federation
Russian Federation
A.A. Romanov - Professor, D.Sc. in Biology; Faculty of Geography, Department of Biogeography
Ya. A. Red’kin
Institute of Biological Problems of Cryolithozone Siberian Branch of RAS; Lomonosov Moscow State University
Russian Federation
Russian Federation
Ya.A. Red’kin - Senior Scientifi c Researcher, Ph.D. in Biology; Museum of Zoology
E. A. Koblik
Lomonosov Moscow State University
Russian Federation
Russian Federation
E.A. Koblik - Senior Scientifi c Researcher, Ph.D. in Biology; Museum of Zoology
P. A. Smirnov
Lomonosov Moscow State University
Russian Federation
Russian Federation
P.A. Smirnov - Zoologist; Museum of Zoology
E. N. Barkanova
Russian Federation
E.N. Barkanova - Animal Photographer
A. N. Kalandadze
Lomonosov Moscow State University
Russian Federation
Russian Federation
A.N. Kalandadze - Zoologist; Museum of Zoology
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For citations:
Romanov A.A., Red’kin Ya.A., Koblik E.A., Smirnov P.A., Barkanova E.N., Kalandadze A.N. Ecological and geographical structure of bird population on the Onekotan Island (the northern Kuril islands). Lomonosov Geography Journal. 2025;(4):125-135. (In Russ.) https://doi.org/10.55959/MSU0579-9414.5.80.4.11
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