Basic formation mechanisms of Lake Doroninskoye soda water, East Siberia, Russia

Борзенко, С. В.; Замана, Л. В.; Usmanova, L.I.

doi:10.1007/s11631-017-0250-7

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…This means that a larger amount of REEs sorbed by secondary minerals can enter the bottom sediments of soda lakes from the solution. Considering the fact that the source of REEs is the host aluminosilicate rocks, and the process of their dissolution proceeds most intensively in soda lakes, which is confirmed by the higher pH of their waters [16], hence the content of REEs in the waters is higher. Chloride lakes are mainly formed due to evaporative concentration of water.…”

Section: Discussionmentioning

confidence: 95%

“…Lake sediments are complex polygenic formations; they consist of terrigenous (eolian) and authigenic (chemogenic) components [16]. The REEs composition, which varies with the increase in the salinity of waters and the change in their chemical type, also affects the content of dissolved lanthanides.…”

Section: Discussionmentioning

confidence: 99%

“…Bottom sediments are represented by kaolinite-hydroslide composition with an admixture of predominantly iron carbonates and sulfides. The salinity of soda lakes varies in the range from 1 to 59 g / l, the salinity of chloride lakes is higher, from 45 to 184 g / l [14][15][16][17]. As previously stated, waters are rich in a large number of microelements including REEs, but the degree of their concentration is different in different types of lakes.…”

Section: Methodsmentioning

confidence: 99%

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Rare-earth elements in salt lakes of Southeastern Transbaikalia

Борзенко

Usmanov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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It was shown that with increasing salinity of waters, it was determined that concentrations of dissolved heavy HREEs and medium MREEs increase in soda lakes. It was determined that sulfatreduction and secondary mineral formation can influence the migration of lanthanides in lakes. Sulfatreduction leads to accumulation of lanthanides of medium MREEs and heavy HREEs subgroups in lake waters. The content of lanthanides of the light LREE subgroup is controlled mainly by secondary mineral formation. Thermodynamic calculations show that the degree of saturation in parasite CaCe0.95La0.6Nd0.35Pr0.1(CO3)3F2 and bastnesite CeCO3(OH)F is higher in soda lakes than in chloride lakes. The saturation of lake waters with respect to cerium hydroxide III in anaerobic and cerium hydroxide IV in aerobic conditions leads to the formation of negative cerium anomaly in lake waters of the considered lake types. It is shown that the different nature of the formation of soda and chloride lakes is the main reason for different concentrations of REEs in their waters and bottom sediments.

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Rare-earth elements in salt lakes of Southeastern Transbaikalia

Борзенко

Usmanov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Bacterial Communities Along Environmental Gradients in Tropical Soda Lakes

et al. 2022

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Soda lakes environment is known to be variable and can have distinct differences according to geographical location. In this study, we investigated the effect of different environmental conditions of six adjacent soda lakes on bacterial communities and their functioning using a metagenomic approach combined with flow cytometry and chemical analyses. Ordination analysis using flow cytometry and water chemistry data from two sampling periods (wet and dry) clustered soda lakes in three different profiles: eutrophic turbid (ET), oligotrophic turbid (OT), and clear vegetated oligotrophic (CVO). Analysis of bacterial community composition and functioning corroborated this ordination; the exception was one ET lake, that was similar to one OT lake during the wet season, indicating drastic shifts between seasons. Microbial abundance and diversity increased during the dry period, along with a considerable number of limnological variables, all indicative of a strong effect of the precipitation-evaporation balance in these systems.Cyanobacteria were linked to high electric conductivity, pH, and nutrient availability, whereas Actinobacteria, Alphaproteobacteria, and Betaproteobacteria were correlated with landscape morphology variability (surface water, surface perimeter, and lake volume) and less stressed lake conditions. Stress response metabolism was overrepresented in ET and OT lakes and underrepresented in CVO lakes. Altogether, this study illustrated the sensitivity of tropical soda lakes to climate change, as slight changes in hydrological regimes might produce drastic shifts in community diversity.

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