-
Article
Geochemistry of the Bottom Sediments of Lake Peyungda, Tunguska Nature Reserve, and Paleoclimatic Reconstructions of the Arctic Territories of Eastern Siberia
Lake Peyungda contains annually layered bottom sediments (varves), which make it possible to build a reliable age model for the entire depth of the core. An age model was refined over the last century based on...
-
Article
Climatic Changes in the Arctic Regions of Eastern Siberia over the Last Millenium according to the Lithological–Geochemical Data on Bottom Sediments of Peyungda Lake (Krasnoyarsk Krai, Evenkia)
Scanning micro-X-ray fluorescence analysis with synchrotron radiation was applied to obtain the depth-variation profiles of element compositions of banded clays in Peyungda Lake (Krasnoyarsk krai, Evenkia) loc...
-
Article
Open AccessErratum to: The Unprecedented Current Increase in the Amount of Charcoal Particles in Sediments of Lakes of the North Minusinsk Basin (Southern Siberia): Possible Evidence of Anthropogenic Influence
An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X23070279
-
Article
Scanning Synchrotron X-Ray Fluorescence Microanalysis for Tephrochronological Studies
On the border of China and North Korea, there is the only active stratovolcano in the eastern part of Asia: Mount Paektu (other names are Baitoushan and Changbaishan). It is widely known for one of the largest...
-
Article
Open AccessThe Unprecedented Current Increase in the Amount of Charcoal Particles in Sediments of Lakes of the North Minusinsk Basin (Southern Siberia): Possible Evidence of Anthropogenic Influence
The distribution of charcoal particles >100 µm in size, which are indicators of plant combustion in ambient territories, are analyzed in sediments of Shira and Uchum lakes located in southern Siberia in the st...
-
Article
Traces of the Tunguska Event (1908) in Sediments of Zapovednoe Lake Based on SR–XRF Data
An anomalous layer enriched with chemical elements indicating the presence of terrigenous matter was discovered in the sediment core of Zapovednoe Lake located 60 km from the epicenter of the Tunguska event (1...
-
Article
Geochemical Features of Annual Layers of Bottom Sediments of Freshwater Lakes, Studied via Synchrotron Radiation–Induced XRF Microanalysis
The possibility of distinguishing layer boundaries through lithological and geochemical indicators (Rb/Sr ratio) is shown by a case study of bottom sediments from Lake Kucherlinskoe (Altai). Based on the data ...
-
Article
Indicators of Oxic and Anoxic Conditions in the System of the Current Sedimentation of Saline Lake Shira (Khakassia), According to High-Resolution SR XRF Data on Bottom Sediments Frozen In Situ
Frozen upper layers of the bottom sediment of Lake Shira are selected using special sampling equipment. Frozen samples and solid samples prepared from the upper layers of a sediment core are examined by means ...
-
Article
Magnetic properties of bottom sediments from Meromectic Shira Lake (Siberia, Russia)
Magnetic properties were studied in bottom sediments of saline meromictic Shira Lake by the methods of static magnetometry and resonance Mössbauer spectroscopy for the first time. All layers of bottom sediment...
-
Article
Dynamics of purple sulfur bacteria in a meromictic saline Lake Shunet (Khakassia, Siberia) in 2007–2013
According to the results of seasonal monitoring, in 2007–2013 purple sulfur bacteria morphologically similar to Thiocapsa sp. Shira_1 (AJ633676 in EMBL/GenBank) predominated in the anoxygenic phototrophic communi...
-
Article
Analysis of diatom algae from the water column and bottom sediments of Shira Lake (Khakassia, Russia)
Lake Shira as a meromictic lake is object of interest for paleolimnological studies. In May 2011 core samples were collected from the bottom of Lake Shira and the species composition of diatom algae, which ser...
-
Article
The 1300-year dynamics of vegetation cover in the Lake Shira depression (Khakassia, Siberia, Russia) reconstructed on the basis of bottom sediments
-
Article
Ecology of purple sulfur bacteria in the highly stratified meromictic Lake Shunet (Siberia, Khakassia) in 2002–2009
Phototrophic sulfur bacteria form dense accumulations in the chemocline zones of stratified lakes where light reaches the sulfide-containing layers of water. Many works are dedicated to the ecophysiology of th...
-
Article
Physicochemical conditions of seasonal carbonate precipitation in Shira lake (Khakasia)
-
Article
Carotenoids in bottom sediments of lake Shira as a paleoindicator for reconstruction of Lake States in Khakassiya, Russia
The concentrations of carotenoids buried in the bottom sediments of Lake Shira (Siberia, Khakassiya) have analyzed for the period of the last 2300 years. The bottom sediments were found to contain carotenoids,...
-
Article
Carotenoids of phototrophic organisms in bottom sediments of meromictic Lake Shira (Siberia, Russia) as an indicator of past stratification
-
Article
Microbial community of the chemocline of the meromictic Lake Shunet (Khakassia, Russia) during summer stratification
The spatio-temporal organization of the bacterial community inhabiting the chemocline of the stratified meromictic Lake Shunet (Khakassia, Russia) was investigated from May to September 2005 by means of micros...
-
Article
Anoxygenic phototrophic bacteria in meromictic lakes of southern Siberia during the ice period: Spatial distributions and ecological conditions
-
Article
Anoxygenic phototrophic bacterial community of Lake Shira (Khakassia)
The anoxygenic phototrophic bacterial community of the brackish meromictic Lake Shira (Khakassia) was investigated in August 2001, July 2002, and February–March 2003. In all the periods of investigation, the p...
-
Article
Seasonal changes in the structure of the anoxygenic photosynthetic bacterial community in Lake Shunet, Khakassia
Seasonal studies of the anoxygenic phototrophic bacterial community of the water column of the saline eutrophic meromictic Lake Shunet (Khakassia) were performed in 2002 (June) and 2003 (February–March and Aug...
