Mongolian salt lakes: some features of their geography, thermal patterns, chemistry and biology

Egorov, A. N.

doi:10.1007/978-94-011-2076-0_2

Cited by 8 publications

(9 citation statements)

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“…Much of the country is semi-arid to arid steppe. Saline lakes are widespread throughout the arid regions of Mongolia and are particularly abundant in the eastern region of the country (Egorov 1993). Many of these lakes are soda lakes.…”

Section: Regional Settingmentioning

confidence: 99%

Geochemical evolution of uraniferous soda lakes in Eastern Mongolia

Linhoff

Bennett

Puntsag³

et al. 2010

Environ Earth Sci

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Section: Regional Settingmentioning

confidence: 99%

Geochemical evolution of uraniferous soda lakes in Eastern Mongolia

Linhoff

Bennett

Puntsag³

et al. 2010

Environ Earth Sci

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“…Moreover, by its morphometry, ursu lake appears as one of the the largest saline heliothermal lakes in the world. Although rarely encountered, heliothermal bodies of water were reported on all continent and climate zones in Asia (e.g., in siberian and Mongolian steppes) (sonnenfeld and Hudec, 1980;egorov, 1993), Africa (solar lake, sinai, egypt) (cohen et al, 1977), north America (Hot lake, WA, usA; Mahoney lake, bc, canada) (zachara et al, 2016;northcote and Hall, 1983), Antarctica (ekho lake, Vestfold Hills) (bowman et al, 2000), Australia and Pacific islands (Hudec and sonnenfeld, 1989).…”

Section: Limnology Of Most Representative Saline Lakesmentioning

confidence: 99%

Limnology and plankton diversity of salt lakes from Transylvanian Basin (Romania): A review

et al. 2017

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Geography, babeş-bolyai university, 5-7 clinicilor str., 400006 cluj-napoca, romania; 2 national institute of research and development for biological sciences (nirdbs), institute of biological research, 48 republicii str., 400015 cluj-napoca, romania; 3 department of Aquatic Microbial ecology, institute of Hydrobiology, biology center of the Academy of sciences of the czech republic, na sádkách 7, 370 05 České budějovice, czech republic; 4 department of Molecular biology and biotechnology, Faculty of biology and Geology, babeş-bolyai university, 5-7 clinicilor str., 400006 cluj-napoca, romania; 5 5department of taxonomy and ecology, Faculty of biology and Geology, babeş-bolyai university, 5-7 clinicilor str., 400006 cluj-napoca, romania; 6 electron Microscopy center, babeș-bolyai university, 5-7 clinicilor street, clujnapoca, romania; 7 center for systems biology, biodiversity, and bioresources, babes-bolyai university, 5-7 clinicilor str., 400006 cluj-napoca, romania *corresponding author: gheorghe.serban@ubbcluj.ro ABSTRACTin the present work, we review the current knowledge on genesis, limnology and biodiversity of salt lakes distributed around the inner contour of eastern carpathian arc (transylvanian basin, central romania). transylvanian salt lakes formed on ancient halite (nacl) deposits following natural processes or quarrying activities. Most of these lakes are located in eastern (sovata area), southern (ocna sibiului), and western (turda-cojocna) parts of the transylvanian basin, have small surfaces (0.1-4 ha), variable depths (2-100 m), are hypersaline (>10%, w/v, total salts, mainly nacl) and permanently stratified. As consequence of steady salinity/density gradient, heat entrapment below surface layer (i.e., heliothermy) develops in several transylvanian lakes. the physical and chemical water stratification is mirrored in the partition of plankton diversity. lakes with less saline (2-10% salinity) water layers appear to harbor halotolerant representatives of phyto-(e.g., marine native Picochlorum spp. and Synechococcus spp.), zoo-(e.g., Moina salina), and bacterioplankton (e.g., Actinobacteria, Verrucomicobia), whereas halophilic plankton communities (e.g., green algae Dunaliella sp., brine shrimp Artemia sp., and members of Halobacteria class) dominate in the oxic surface of hypersaline (>10% salinity) lakes. Molecular approaches (e.g., Pcr-dGGe, 16s rrnA gene-based clone libraries, and dnA metabarcoding) showed that the o 2 -depleted bottom brines of deep meromictic transylvanian lakes are inhabited by known extremely halophilic anaerobes (e.g. sulfate-reducing delta-Proteobacteria, fermenting clostridia, methanogenic and polymer-degrading archaea) in addition to representatives of uncultured/unclassified prokaryotic lineages. overall, the plankton communities thriving in saline transylvanian lakes seem to drive full biogeochemical cycling of main elements. However, the trophic interactions (i.e., food web structure and energy flow) as well as impact of human activities and predicted climate chang...

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“…Moreover, the Gobi is located on a plateau ~910-1520 m above sea level, which further contributes to its extremeness [2][3][4]. Furthermore, saline lakes in the Gobi region have a high evaporation rate and an average annual rainfall of only ~ 194 mm.…”

Section: Description Of Sampling Sites and Sampling Proceduresmentioning

confidence: 99%

“…Based on the official record, there are > 3500 salt lakes and an enormous area of salt lands located in the Altai Mountain and Gobi regions in western Mongolia. However, these salt lakes have had minimal scientific study or human activity [2,3]. Therefore, western Mongolia provides an excellent research environment to explore high-latitude hypersaline environments and to conduct comparative analyses of chemical compositions among salt lakes [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Physico-Chemical Composition of Saline Lakes of the Gobi Desert Region, Western Mongolia

Bayanmunkh¹,

Sen-lin²,

Narangarvuu³

et al. 2017

J Earth Sci Clim Change

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Mongolian saline lakes have been rarely studied. In particular, physicochemical composition of small shallow lakes of the Gobi Desertregion in western Mongolia is simply unknown. Objectives were to characterize chemical composition and describe biogeochemical characteristics of saline lakes in the Gobi Desertregions and steppe mountains, with an emphasis on environmental parameters associated with heavy metal ions. Major physicochemical parameters were determined in 14 lakes (with varying degrees of salinity) located in western Mongolia and associations with geographic variation and distance were determined. Vertical profiles for temperature, specific conductance, and dissolved oxygen were characterized. Salinity and pH were measured with multiparameter submersible profilers. Heavy metal ions (i.e., As, Pb, and Cd) and microelements (i.e., K, Na, Zn, Cu, Ni, Cr, and Co) were analyzed with Inductively Coupled Plasma-Mass Spectrometry. Hydrogen sulfide, ammonia, nitrite, and nitrate were also determined by commercial kits for elemental analysis. Overall, 43 environmental parameters were determined from 31 water samples from various locations, representing distinct geographic features, including Gobi Desert, mountain range and steppe area. Several of these lakes had harmful concentrations of arsenate (< 0.34 mg/L). Heavy metal concentrations were correlated with selected physico-chemical variables of lake salinity and geographic specificity. We inferred that various environmental features, in addition to environmental pollution and mining activity, may be responsible for increased heavy metal concentrations in the Gobi Desert of the western Mongolia. The outcome of this study not only provided insights into lake chemistry, but should also be valuable for water resource management to mitigate potential poisoning and improve public health.

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Mongolian salt lakes: some features of their geography, thermal patterns, chemistry and biology

Cited by 8 publications

References 1 publication

Geochemical evolution of uraniferous soda lakes in Eastern Mongolia

Geochemical evolution of uraniferous soda lakes in Eastern Mongolia

Limnology and plankton diversity of salt lakes from Transylvanian Basin (Romania): A review

Physico-Chemical Composition of Saline Lakes of the Gobi Desert Region, Western Mongolia

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