Abstract
The paper presents information about the nesting and abundance of the osprey on the territory of the Sayano-Shushensky State Nature Biosphere Reserve and its conservation zone. During the analysis of the materials it was found that before the formation of the Sayano-Shushenskaya Hydroelectric Power Station reservoir 34 pairs of ospreys nested on the banks of the Yenisei, in 1988 the number was 78 pairs, in 1994 7 residential nests were registered. Since 2012 observations have been resumed. In the period 20122018 it was found that the osprey lives on 9 breeding sites located on the territory of the reserve and in its protected area. In 2019 during the survey of the bays of the reservoir 12 nests with different status were mapped. The 2020 survey showed that there are 11 active nests (nests in which breeding takes place). Despite a decrease in the number of active nests and an increase in the proportion of unemployed the number of ospreys remains stable and amounts to 12 pairs. The fact that the number of birds is greater than the number of residential nests is explained by the fact that birds have not started nesting and are not associated with known nests, or not all nesting sites have been found. During the 2021 field season 2 new osprey nests were found within the reserve. In addition to accounting for adult birds, work was carried out during 20192021 to determine the number of chicks in the nests. A comparison of the results by year showed that in 2020, despite a decrease in the share of residential nests, there are more chicks compared to 2019. In 2021 the largest number of chicks was recorded for three years of observations. In order to improve the condition of the group living in the Sayano-Shushensky State Nature Biosphere Reserve, it is necessary to minimize the presence of humans near the bays in which the nests are located. This will allow the birds to safely form pairs and breed.
Highlights
Большая часть птиц Центрального очага по водохранилищу Саяно-Шушенской ГЭС гнездится на территории Саяно-Шушенского заповедника и его охранной зоны
Таблица 1 – Заселенность гнезд скопы по гнездовым участкам на территории Саяно-Шушенского заповедника и в его охранной зоне за период 2012–2018 гг
Большая Голая удовлетворительное сухая лиственница с обломленной вершиной хорошее сухая лиственница с обломленной вершиной
Summary
Красноярский край, Российская Федерация) 2Хакасский государственный университет им. Российская Федерация) 3Красноярский государственный медицинский университет имени профессора В.Ф. В статье представлена информация о гнездовании и численности скопы на территории Саяно-Шушенского биосферного заповедника и его охранной зоны. В ходе анализа материалов установлено, что до формирования водохранилища Саяно-Шушенской ГЭС на берегах Енисея гнездилось 3–4 пары скопы, в 1988 году численность составляла 7–8 пар, в 1994 году зарегистрировано 7 жилых гнезд. Обследование 2020 года показало, что активных гнезд 11 (гнезда, в которых идет размножение). Несмотря на снижение количества активных гнезд и увеличение доли незанятых, численность скопы остается стабильной и составляет 12 пар. В ходе полевого сезона 2021 года в пределах заповедника найдено 2 новых гнезда скопы. Сравнение результатов по годам показало, что в 2020 году, несмотря на снижение доли жилых гнезд, птенцов больше по сравнению с 2019 годом. Shikalova E.A.1˒2, Vinogradov V.V.3 1Sayano-Shushensky State Nature Biosphere Reserve (Shushenskoe, Krasnoyarsk Krai, Russian Federation)
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