The extending of ranges of some bird species at the north-eastern border of their distribution due to intra-century climate changes

• Published in: Nature Conservation Research
• Main Author: Oleg V. Glushenkov
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: Fund for Support and Development of Protected Areas "Bear Land" 2017
• Subjects: arrival timing; birds of prey; intra-century climate changes; range expanding; semi-aquatic birds; waterfowl; Geography. Anthropology. Recreation; G; Kama; Olor; Actitis hypoleucos
• Online Access: https://doi.org/10.24189/ncr.2017.047; https://doaj.org/article/5c61147da5df40cc90c5c7088f74bc5c

The paper presents an overview of the phenomenon of range expanding of birds located at the northeastern limit of their range. The study area is located in the Volga-Kama Krai in the Chuvash Republic, adjacent to the River Volga. It is situated northwards and southwards of 56° N, and westwards and eastwards of 49° E, in a band of about 400 km. The problem is considered in aspect of the intra-century changes of climatic conditions in the region and in European Russia as a whole. The analysis of the relationship between the range expansion of some bird species and the intra-century climate changes was based on ornithological and climatological material available for the study area. We have used material on climate change in the Chuvashian Republic and Volga-Kama Krai since 1926, taking into account recent data of Roshydromet and Intergovernmental Panel on Climate Change. The idea of this study was based on the theory of climatic cycles of different periodicity, the theory of recent global climate change and the hypothesis of cyclic dynamics of the ranges of waterfowl in the context of centuries-old and intra-century climate change in Northern Eurasia. In the framework of the problem, we have studied ornithological material dated from the late 19th till the early 21st century, authored by Bogdanov, Ruzsky, Zhitkov, Buturlin, Artobolevsky, Volchanetsky, Pershakov, Popov, Glushenkov and others. As shown the intra-century climate changes do quite likely affect the northward and northeastward range expansion of such bird species as Cygnus olor, Anas strepera, Aythya ferina, Hieraaetus pennatus, Aquila heliaca, and Fulica atra. Climate changes can also be judged on the base of the shift in the arrival timing to earlier dates for some birds. It is most clearly manifested for early arriving species (Grus grus, Ardea cinerea, Actitis hypoleucos). It is also true for the later arriving Pernis apivorus and Merops apiaster whose existence depends on the emergence time of insects. Climate changes are not the only determining ...