Dynamics of the Asian Anti-Cycle and Its Influence on Climate and Ecology of the Baikal Region

Vologzhina, Sayana; Латышева, И. В.

doi:10.21209/2227-9245-2019-25-3-4-11

Cited by 2 publications

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“…more than 2.7 times [1][2][3]. At present, it is pronounced even more, since the last decades have been the warmest for the entire period of instrumental study of the climate [4][5]. Modern warming is in the late winter and early spring periods most pronounced.…”

Section: Introductionmentioning

confidence: 99%

“…It is possible that such dynamics of bird population density is due to a transitional period from warming to cooling of the climate. In any case, in the last decade, in some regions of Eastern Siberia, there has been a clear pause in its warming, which may indicate a gradual transition to a more humid period of the next high-level climate cycle [3][4][18][19]. One of the characteristics of the phenomenon under study may be the emergence of new species as the general trend towards climate warming develops, associated with a change in the boundaries of their ranges (displacement to the north) [7][8]20].…”

Section: Introductionmentioning

confidence: 99%

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The dynamics of the bird population in the forest ecosystems of Eastern Siberia (South Baikal) under the conditions of the modern climate changes

Mel’nikov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The work was carried out on a key site with an area of more than 50 km2 on the right bank of the source of the Angara river (South Baikal) in 2010-2020 The studies were carried out in winter and summer periods, based on the standard technique used in Russia for these purposes. The studies fall on a period of strong warming close to the maximum, most likely a centuries-old climate cycle. It is shown that the dynamics of population density and species diversity of birds in the winter and summer seasons at this time are very different. The summer period is by wavelike (cyclical) changes characterized, without a pronounced trend. In winter, on the contrary, there is a well-pronounced trend towards a noticeable decrease in these indicators. The different responses of birds to climate changes are undoubtedly by the initial factors operating at their areas determined. In the summer period - the drying up of the territory of Central Asia and the resettlement of birds, especially waterfowl and waterfowl, to the northern borders of their areas. In the winter period - by situations in the optima of wintering habitats, which also shifted somewhat to the north (even in sedentary bird species). These materials indicate the strong impact of climate change on the environment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The dynamics of the bird population in the forest ecosystems of Eastern Siberia (South Baikal) under the conditions of the modern climate changes

Mel’nikov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Modern climate changes and dynamics of density and structure of bird population of South Baikal of forest ecosystems in winter period

Mel’nikov

2021

IOP Conf. Ser.: Earth Environ. Sci.

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On the basis long-term researches (2010-2021), the features of the formation of the winter population of birds on the right bank of the source of the Angara river (South Baikal) during a period of sharp climate warming are considered. It is shown that the warming was accompanied by a gradual decrease in the total density of the bird population and a noticeable increase in their species diversity. On the key site, were 73 wintering species recorded, of which 28 were new to the region. However, 24 species were previously in this area as nesting, migratory and summering birds found. Only 4 species were really new. All new wintering species differed in insignificant numbers and the increase in the number of wintering species was due to an increase in the comfort of the living conditions of birds as result of climate warming. The relationship between population density birds and the number of wintering species was clearly in certain categories manifested, and only in minor species did it play a certain role in increasing their population density. The reformation of the structure of the bird population in the winter period due to the noticeable warming of the climate was almost completely by the dynamics of the population of the most massive and numerous species of sedentary and migrating for wintering species determined. The decrease in the abundance of birds is clearly associated with a shift in the optima of their ranges to more northern regions.

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Dynamics of the Asian Anti-Cycle and Its Influence on Climate and Ecology of the Baikal Region

Cited by 2 publications

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The dynamics of the bird population in the forest ecosystems of Eastern Siberia (South Baikal) under the conditions of the modern climate changes

The dynamics of the bird population in the forest ecosystems of Eastern Siberia (South Baikal) under the conditions of the modern climate changes

Modern climate changes and dynamics of density and structure of bird population of South Baikal of forest ecosystems in winter period

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