scholarly journals Environmental changes in last 200 years from results of bottom-sediments analysis of lake Oron (Kodar ridge, Eastern Siberia, Russia)

2019 ◽  
Vol 46 (4) ◽  
pp. 447-456
Author(s):  
I. V. Enushchenko
Keyword(s):  
Bottom Sediments ◽  
Environmental Changes ◽  
Environmental Studies ◽  
Eastern Siberia ◽  
Thick Sample ◽  
Climate Effect ◽  
Chironomidae Larvae ◽  
Regional Landscape

Records of bottom sediments accumulated in Lake Oron over the last 200 years were analyzed. Chironomidological and palynological examinations of Lake Oron bottom sediments, based on a 10-cm-thick sample from drilling, were conducted. The dynamic climate effect on fauna was studied by examination of Chironomidae larvae from the lake. The lake’s hydrological status and the local and regional landscape and vegetation were also determined. As a result of these environmental studies, the effect of Lake Oron’s nearshore conversion to bog on the process of the lake water’s acidification was assumed, and the approximate dates of the process were defined as beginning in the 1940s.

Mercury in bottom sediments of the Amur River, its flood-plain lakes and estuary, Eastern Siberia

2009 ◽  
Vol 168 (1-4) ◽  
pp. 133-140 ◽  
Author(s):  
Fyodor S. Kot ◽  
Konstantin G. Bakanov ◽  
Nikolay A. Goryachev
Keyword(s):  
Bottom Sediments ◽  
Flood Plain ◽  
Eastern Siberia ◽  
Amur River ◽  
The Amur River

scholarly journals New results of a palynological study of the Lake Doroninskoe sediments (Eastern Siberia, Transbaikalia)

2022 ◽  
Vol 962 (1) ◽  
pp. 012033
Author(s):  
S A Reshetova
Keyword(s):  
Bottom Sediments ◽  
Pollen Analysis ◽  
Meromictic Lake ◽  
Sediment Layer ◽  
Eastern Siberia ◽  
Modern Times ◽  
Middle Holocene ◽  
Time Period ◽  
Palynological Study

Abstract This article presents the results of the study of the bottom sediments of the meromictic Lake Doroninskoe. For the study, the method of spore-pollen analysis was used. The record showed that during the accumulation of 65 cm of the sediment layer in the Chita-Ingodinskaya depression, pine and larch predominated along the ridges, with steppe and meadow associations in the lower parts of the depression. According to regional correlations, the distribution of light-coniferous-taiga vegetation in Transbaikalia occurred as early as the Middle Holocene, and it did not undergo cardinal changes until modern times. According to these data, sediments may have accumulated during this time period.

scholarly journals Future vegetation–climate interactions in Eastern Siberia: an assessment of the competing effects of CO<sub>2</sub> and secondary organic aerosols

2016 ◽  
Vol 16 (8) ◽  
pp. 5243-5262 ◽  
Author(s):  
Almut Arneth ◽  
Risto Makkonen ◽  
Stefan Olin ◽  
Pauli Paasonen ◽  
Thomas Holst ◽  
...  
Keyword(s):  
Temperature Response ◽  
Eastern Siberia ◽  
Climate Feedbacks ◽  
Arctic Ecosystems ◽  
Climate Effect ◽  
Volatile Organic ◽  
Climate Interactions ◽  
Co2 Balance ◽  
Positive Climate ◽  
Net Release

Abstract. Disproportional warming in the northern high latitudes and large carbon stocks in boreal and (sub)arctic ecosystems have raised concerns as to whether substantial positive climate feedbacks from biogeochemical process responses should be expected. Such feedbacks occur when increasing temperatures lead, for example, to a net release of CO2 or CH4. However, temperature-enhanced emissions of biogenic volatile organic compounds (BVOCs) have been shown to contribute to the growth of secondary organic aerosol (SOA), which is known to have a negative radiative climate effect. Combining measurements in Eastern Siberia with model-based estimates of vegetation and permafrost dynamics, BVOC emissions, and aerosol growth, we assess here possible future changes in ecosystem CO2 balance and BVOC–SOA interactions and discuss these changes in terms of possible climate effects. Globally, the effects of changes in Siberian ecosystem CO2 balance and SOA formation are small, but when concentrating on Siberia and the Northern Hemisphere the negative forcing from changed aerosol direct and indirect effects become notable – even though the associated temperature response would not necessarily follow a similar spatial pattern. While our analysis does not include other important processes that are of relevance for the climate system, the CO2 and BVOC–SOA interplay serves as an example for the complexity of the interactions between emissions and vegetation dynamics that underlie individual terrestrial processes and highlights the importance of addressing ecosystem–climate feedbacks in consistent, process-based model frameworks.

Bottom Sediments of the West Siberian Arctic Lakes as Indicators of Environmental Changes

2020 ◽  
Vol 58 (4) ◽  
pp. 408-422
Author(s):  
Yu. G. Tatsii ◽  
T. I. Moiseenko ◽  
L. V. Razumovskii ◽  
A. P. Borisov ◽  
V. Yu. Khoroshavin ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Environmental Changes ◽  
Arctic Lakes ◽  
The West ◽  
Siberian Arctic

scholarly journals Differences in local perceptions about climate and environmental changes among residents in a small community in Eastern Siberia

Polar Science ◽  
2020 ◽  
pp. 100556
Author(s):  
Hiroki Takakura ◽  
Yuichiro Fujioka ◽  
Vanda Ignatyeva ◽  
Toshikazu Tanaka ◽  
Nadezhda Vinokurova ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Eastern Siberia ◽  
Small Community ◽  
Local Perceptions

scholarly journals ANALISIS PHYTOLITH DAN STARCH UNTUK STUDI ARKEOLOGI LINGKUNGAN

KALPATARU ◽  
2018 ◽  
Vol 26 (2) ◽  
pp. 137
Author(s):  
Alifah Alifah
Keyword(s):  
Environmental Changes ◽  
Environmental Studies ◽  
Environmental Issues ◽  
Research Data ◽  
Site Formation ◽  
Archaeological Sites ◽  
Human Adaptation ◽  
Literature Study ◽  
Significant Information ◽  
Adaptation Processes

Environmental issues in archaeology have become a very interesting theme to be researches. Those theme relates to landscapes, environmental changes, site formation and human adaptation processes. Faunal ecofact and artifact are commonly used as research data nowdays. Analysis of plants residu are less common because of the scarcity of those remains in the archaeological sites,especially prehistory. This paper attempts to explain some possible uses of microscopic plant residua analysis in the form of phytolith and starch for environmental studies. The method used in this paper is literature study on microbotani  as well as imitation experiments by combining several methods ever undertaken by previous researchers. This study shows that the  plants remains , especially the microbotany form of phytolith and starch provide significant information about the types of plants in the pass, environmental changes and their utilization by humans.

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