Analysis of the Avifauna and Bird Populations of Iturup Island, Great Kuril Ridge

Romanov, A.A.; Koblik, E.A.; Smirnov, P.A.; Vinogradov, A.A.; Red’kin, Y.A.; Zhigir, D.R.

Авторы: Romanov A.A., Koblik E.A., Smirnov P.A., Vinogradov A.A., Red’kin Ya A., Zhigir D.R.
Журнал: Biology Bulletin
Том: 51
Номер: 7
Год издания: 2024
Издательство: M A I K Nauka - Interperiodica
Местоположение издательства: Russian Federation
Первая страница: 2100
Последняя страница: 2112
Номер статьи: 17
DOI: 10.1134/S1062359024700602
Аннотация: The ecological patterns of the formation of the avifauna and bird populations on Iturup Island havebeen analyzed. Route censuses were used along transects with unlimited width. As many as 116 bird specieshave been registered; 36% of them are ubiquitous, 34% are local, and the other 26% are highly local. Seventyonespecies were shown to nest. The taxonomic structure of the avifauna, represented by species from15 orders, corresponded to the zonal and landscape features of the island areas located at the eastern marginsof northern Eurasia. Passeriformes (37%), Charadriiformes (22%), Anseriformes (9%), and Procellariiformes(8%) prevailed. The zoogeographic peculiarity of the local avifauna was the combination of elementsof the Far East island, Pacific, Siberian, and Chinese faunal complexes, some Siberian–American and widespreadspecies, and Japanese island endemics. The avifauna around Iturup Island, formed by a system of generalzonal-landscape and altitudinal-belt patterns, combines the ecological groups of marine and terrestrialspecies, including mountain ones (n = 9). The local avifauna includes 41 species in coastal marine habitatsvs. 55 species in forests, 37 species in light forests, and 46 species in tall grasses, with the population densitybeing 607, 785, 968, and 518 individuals/km2, respectively. The similarity coefficients were 19–48% for thepopulations of forest habitats vs. 22% for light forests and 20–37% for tall grasses, while they were 21–52%for the sea coast and adjacent water areas. The populations of terrestrial habitats are dominated by the orientalturtle-dove, Pacific swift, Siberian rubythroat, Japanese bush-warbler, marsh tit, coal tit, Eurasian nutcracker,oriental greenfinch, Eurasian siskin, long-tailed rosefinch, masked bunting, and gray bunting. Thepopulations of the coast and adjacent sea area are dominated by Temminck’s cormorant, the rufous-neckedstint, slaty-backed gull, black-tailed gull, and black-backed wagtail. In open sea areas, the most common speciesare the white-winged scoter, black-footed and Laysan albatrosses, northern fulmar, and short-tailedshearwater.
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Analysis of the Avifauna and Bird Populations of Iturup Island, Great Kuril Ridgeстатья

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