Changes in the species composition and number of gulls in tundra colonies in the western Chukotka over the last 40 years
- Авторлар: Solovyeva D.1, Zelenskaya L.1
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Мекемелер:
- Institute of Biological Problems of the North, Far East Branch
- Шығарылым: Том 43, № 8 (2016)
- Беттер: 844-850
- Бөлім: Article
- URL: https://journals.rcsi.science/1062-3590/article/view/181868
- DOI: https://doi.org/10.1134/S1062359016080173
- ID: 181868
Дәйексөз келтіру
Аннотация
Long-term data reflecting the abundance and species composition of large colonies of gulls (more than five nests, distance between the nests less than 50 m) on Aiopechan Island, West Chukotka, were compared. A comparative analysis of the data published in 1970–1984 and our data for 1989, 2000–2013 revealed significant changes in the composition and abundance of colonies over the 40-year period with simultaneous shift in the spring phonological characteristics to earlier dates. Growth in the number of the Vega gull (Larus vegae) and decrease in the number of Sabine’s gull (Xema sabini) were revealed. The number of glaucous gulls (Larus hyperboreus) was stable. A change of the dominant species in the colonies and disappearance of some colonies of the Sabine’s gull under the influence of the expansion of the Vega gull were registered. It was found that the increase in the abundance of the Vega gull occurs not owing to the increase of long-term colonies but due to the appearance of new ones.
Негізгі сөздер
Авторлар туралы
D. Solovyeva
Institute of Biological Problems of the North, Far East Branch
Хат алмасуға жауапты Автор.
Email: diana_solovyova@mail.ru
Ресей, Magadan, 685000
L. Zelenskaya
Institute of Biological Problems of the North, Far East Branch
Email: diana_solovyova@mail.ru
Ресей, Magadan, 685000