Прямое доказательство реверсивной миграции серого гуся Anser anser L. (Aves: Anseriformes) в Предкавказье

Лебедева, Н.В.

Автор: Лебедева Н.В.
Журнал: Наука юга России
Том: 15
Номер: 2
Год издания: 2019
Издательство: ФГУП Издательство «Наука»
Местоположение издательства: Москва
Первая страница: 70
Последняя страница: 81
Номер статьи: 8
DOI: 10.7868/S25000640190208
Аннотация: The migration routes of the wild female of the Greylag goose Anser anser L. (Anseriformes) from the population breeding on Veselovsky reservoir (47°06′30″N, 40°54′47″E, Valley of the Western Manych River) marked as a non-flying young bird are described. It was established that the goose wintered three times in the south of the Western Ciscaucasia: on Krasnodar (44°59′36″N, 39°17′38″E) and Varnavinsky reservoirs (47°06′30″N, 40°54′47″E) from 2015 to 2018. Direct evidence of the premature and reversal migration of the Greylag goose during the wintering of the first year of life was obtained for the first time by individual tagging data using a GPS-GSM transmitter. To analyze the causes of premature and reverse migration, we studied the dynamics of the weather conditions in January and February 2016 (first year of life wintering of the labeled goose) in the Western Ciscaucasia. It was found that in the southern part of the Prikubansk lowland in January and February 2016 the weather conditions were more comfortable compared to the region of goose origin (Veselovsky reservoir), where part of the breeding goose population remained for wintering and migration stopover area (46°00′N, 38°07′30′′E, Primorsko-Akhtarsk Reed beds). In general, January and February were characterized by positive average monthly temperatures in the wintering area and were 4 degrees warmer compared to the breeding area, and the winds in the foothills of the Caucasus were significantly weaker than those in northern areas. In the middle of winter in January 2016 the year-old female attempted to migrate to the north through the Eastern Azov stopover in Primorsko-Akhtarsk Reed beds after consecutive offensive short period of frost and sudden long-term warming in the extended area of the wintering. The formation of adverse weather conditions (a rapid decreasing of temperature to negative values, strong wind from the northeast direction, snowfall) in the northern part of Ciscaucasia led to the return of the goose to the wintering area. It was shown that unstable weather conditions in January 2016 made the Greylag goose to move on average longer distances (6.0 ± 1.1 km) compared to movements in February 2016 (4.1 ± 1.4 km). In other years, this goose did not attempt to migrate north in the middle of wintering. The distribution of movement distances of the individual in January significantly varied in different years, and were the highest during the first wintering. We explain this by the fact that the prevailing weather conditions in the south of the Prikubansk lowland in January 2016 could serve as a trigger for such migration behavior of young bird, and unfavorable weather conditions along the migration path led to a reverse migration to the wintering place.
Добавил в систему: Лебедева Наталья Викторовна

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Прямое доказательство реверсивной миграции серого гуся Anser anser L. (Aves: Anseriformes) в Предкавказьестатья

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