Vegetation of Central Transbaikalia in the Late Glacial period and Holocene

Reshetova, Svetlana A.; Безрукова, Е. В.; Panizzo, Virginia N.; Henderson, Andrew C.G.; Ptitsyn, A. B.; Daryin, A.V.; Калугин, И. А.

doi:10.1134/s1875372813020108

Cited by 17 publications

(8 citation statements)

References 12 publications

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“…Natural and climatic conditions of the region are presented in numerous specialized maps, atlases and papers and reflect these or those characteristics of regional environments and structural peculiarities of the vegetation cover on the territory of the Baikal Region from first papers by M.F. Korotky [31]- [34] up to present-day researchers [35]- [38]. Because this kind of information will take much more places in the paper that way we mentioned only authors why made this research for long time investigation of the zonal forest of North Trans-Baikal and transition territory of zonal forest-steppe to dry zonal steppe of South-Western regions.…”

Section: Resultsmentioning

confidence: 99%

“…Here one can suppose that at income of a dry period, one forecast extention of steppes zone toward the forest-steppe zone with extention of steppe territories within forest-steppes. It occurred just in recent past-at different Holocene stages in Siberia [38]. Due to this, the interzonal ecotone suggests spatial-temporal variability of the vegetation development in environmental zones.…”

Section: Key Site-middle Part Of the Selenga River Basin (South-westementioning

confidence: 94%

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Arealogical and Ecotypological Compositions of the Flora of Plant Communities at Environment Contact Sites (Based on Some Pre-Baikal Sites)

Sizykh¹

2016

OALib

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The study of phytocenoses of transitional environmental conditions in the Pre-Baikal Region enabled to reveal modern tendencies of vegetation development in different Pre-Baikal sites. Such cenoses can serve as a regional model for indication of existing processes and of changes in vegetation structure which occurred under different environmental conditions. It is found out that ecotones and cenoses reflecting the paragenese in vegetation structure indicate structuraldynamic peculiarities of the organization of Pre-Baikalian vegetation cover as a whole. They are valid for classification and characterize intrazonal differences in vegetation structure at vaste territories. Ecotones and paragenese in the vegetation structure in the studied area reflect physical and geographical conditions of their formation for a definite time period.

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Section: Resultsmentioning

confidence: 99%

Section: Key Site-middle Part Of the Selenga River Basin (South-westementioning

confidence: 94%

Arealogical and Ecotypological Compositions of the Flora of Plant Communities at Environment Contact Sites (Based on Some Pre-Baikal Sites)

Sizykh¹

2016

OALib

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“…6d). This warmer, wetter climate led to extensive melting of glaciers along the shores of Lake Baikal (Horiuchi et al 2004), and major expansion of boreal vegetation (Tarasov et al 2009;Bezrukova et al 2010;Reshetova et al 2013). The Younger Dryas stadial (12.9 -11.7 kyr BP), is probably the most studied climate disturbance event of the late Quaternary (Broecker et al 2010).…”

Section: Duringmentioning

confidence: 99%

Long term trends in aquatic diversity, productivity and stability: a 15,800 year multidecadal diatom study from Lake Baikal, southern Siberia

Mackay¹,

Felde

Morley³

et al. 2020

Preprint

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Abstract. Biological diversity is inextricably linked to community stability and ecosystem functioning, but our understanding of these relationships in freshwater ecosystems are largely based on short-term observational, experimental, and modelling approaches. Using a multidecadal diatom record for the past 15,800 years from Lake Baikal, we investigate how three ecosystem components – diversity, productivity, and stability – have responded to climate changes on long-timescales. In addition, we investigate how the relationships between diversity, productivity and stability have changed through time in response to these changes. We show that abrupt changes in diatom stability and diversity during the late glacial and early Holocene are part of a network of responses across southern Siberia as a result of extrinsically-forced climate instability. Productivity – diversity relationships were strongly coupled during the late glacial, which we suggest is linked to resource availability, but showed little relationship during the Holocene, perhaps due to few resources being limiting for extended periods of time. For example, periods of low diatom diversity are associated with peak palaeoproductivity, and coincide with climate disturbance events. Such strong negative relationships may reflect resources becoming limiting during palaeoproductivity, leading to monospecific diatom blooms. While species fluctuations respond rapidly to changing resources during much of the Holocene, the ecosystem function of primary production appears to be relatively resilient. Our study provides important perspectives on lake community stability and ecosystem function in relation to rapid periods of climate change.

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“…Thus, based on the multiproxy studies of the Hoton-Nur basin in northwest Mongolia, Tarasov et al (2000) and Rudaya et al (2009) reconstructed an increase in humidity of climate 10.0-10.5 kyr BP, when a transition from steppe to forest steppe occurred in the area, and the beginning of rapid aridization at about 4 kyr BP. In the Baikal region, the transition from more humid conditions to more arid and continental climate took place 6-7 kyr BP (Bezrukova et al 2014;Reshetova et al 2013;Sharova et al 2015). A somewhat different sequence of climate changes was reconstructed for the area west of the Baikal Lake.…”

Section: Climate Changes In the Mountain Regions Of Southern Siberia mentioning

confidence: 99%

Multicentennial Climatic Changes In The Tere-Khol Basin, Southern Siberia, During The Late Holocene

Borisova

Панин

2019

GES

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Pollen analysis was carried out on an 80-cm sedimentary section on the shore of Lake Tere-Khol (southeastern Tuva). The section consists of peat overlapping lake loams and covers the last 2800 years. The alternation of dry-wet and cold-warm epochs has been established, and changes in heat and moisture occurred non-simultaneously. The first half of the studied interval, from 2.8 to 1.35 kyr BP was relatively arid and warmer on average. Against this background, temperature fluctuations occurred: relatively cold intervals 2.8-2.6 and 2.05-1.7 kyr BP and relatively warm 2.6-2.05 and 1.7-1.35 kyr BP. The next time interval 1.35-0.7 kyr BP was relatively humid. Against this background, the temperatures varied from cold 1.35-1.1 kyr BP to relatively warm 1.1-0.7 kyr BP. The last 700 years have been relatively cold with a short warming from 400 to 250 years ago. This period included a relatively dry interval 700-400 years ago and more humid climate in the last 400 years. The established climate variability largely corresponds to other climate reconstructions in the Altai-Sayan region. The general cooling trend corresponds to an astronomically determined trend towards a decrease in solar radiation in temperate latitudes of the Northern Hemisphere, and the centennial temperature fluctuations detected against this background correspond well to changes in solar activity reconstructed from 14C production and the concentration of cosmogenic isotopes in Greenland ice. Against the general tendency towards aridization, alternating wet and dry phases correspond well to changes in the activity of the Asian monsoon, established by the oxygen-isotope composition of speleothems in South China.

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Vegetation of Central Transbaikalia in the Late Glacial period and Holocene

Cited by 17 publications

References 12 publications

Arealogical and Ecotypological Compositions of the Flora of Plant Communities at Environment Contact Sites (Based on Some Pre-Baikal Sites)

Arealogical and Ecotypological Compositions of the Flora of Plant Communities at Environment Contact Sites (Based on Some Pre-Baikal Sites)

Long term trends in aquatic diversity, productivity and stability: a 15,800 year multidecadal diatom study from Lake Baikal, southern Siberia

Multicentennial Climatic Changes In The Tere-Khol Basin, Southern Siberia, During The Late Holocene

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