Biogeochemical conversion of sulfur species in saline lakes of Steppe Altai

Борзенко, С. В.; Kolpakova, Marina; Шварцев, С. Л.; Исупов, В. П.

doi:10.1007/s00343-018-6293-8

Cited by 5 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, methanogenesis becomes the main anaerobic process of organic matter remineralization in freshwater sediments 4 . Previous studies in brackish to hypersaline lakes have shown that high salinities do not necessarily inhibit BSR or sulphide oxidation 9 – 13 . However, hot-spots of BSR activity and the extent to which the source of SO 4 2− in different athalassic saline systems can come from the lake bed minerals or from groundwater instead of from surface water are poorly documented yet essential to predict methanogenesis potential in these ecosystems.…”

Section: Introductionmentioning

confidence: 92%

Upside down sulphate dynamics in a saline inland lake

Margalef-Marti

Sébilo

Chanvalon

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The sulphur cycle has a key role on the fate of nutrients through its several interconnected reactions. Although sulphur cycling in aquatic ecosystems has been thoroughly studied since the early 70’s, its characterisation in saline endorheic lakes still deserves further exploration. Gallocanta Lake (NE Spain) is an ephemeral saline inland lake whose main sulphate source is found on the lake bed minerals and leads to dissolved sulphate concentrations higher than those of seawater. An integrative study including geochemical and isotopic characterization of surface water, porewater and sediment has been performed to address how sulphur cycling is constrained by the geological background. In freshwater and marine environments, sulphate concentration decreases with depth are commonly associated with bacterial sulphate reduction (BSR). However, in Gallocanta Lake sulphate concentrations in porewater increase from 60 mM at the water–sediment interface to 230 mM at 25 cm depth. This extreme increase could be caused by dissolution of the sulphate rich mineral epsomite (MgSO4·7H2O). Sulphur isotopic data was used to validate this hypothesis and demonstrate the occurrence of BSR near the water–sediment interface. This dynamic prevents methane production and release from the anoxic sediment, which is advantageous in the current context of global warming. These results underline that geological context should be considered in future biogeochemical studies of inland lakes with higher potential availability of electron acceptors in the lake bed compared to the water column.

show abstract

Section: Introductionmentioning

confidence: 92%

Upside down sulphate dynamics in a saline inland lake

Margalef-Marti

Sébilo

Chanvalon

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…is located in the Kulunda depression on a territory of Western Siberia (Russia). This territory is distinguished by high variety of saline lakes of diverse chemical composition [27][28][29]. The lake has the area of 35 km 2 and the maximum depth of 5 m (Figure 1) with steep banks and Scirpus hippolytii Krecz.…”

Section: Studied Areamentioning

confidence: 99%

Distribution Profile of Chemical Elements during the Last 13 Thousand Years from the Sediments of Maloye Yarovoe Lake (Western Siberia, Russia)

Kolpakova

Gaskova

Борзенко

et al. 2020

Water

View full text Add to dashboard Cite

The article presents the studies on understanding the chemical evolution of Maloye Yarovoe lake that is located in the semi-arid landscape of and represent the most widespread chemical type of saline lake (Cl-Na) on the territory of Kulunda steppe (south of Western Siberia). The lake has gone through several changes in its state which are well represented in its sediments: section 1 (4.52–4.97 m) represents the subbase; section 2 (3.0–4.57 m) corresponds to a “shallow lake” stage and contains two sublayers; section 3 (0–2.25 m) illustrates an increase in erosion of the shoreline and corresponds to a “deep lake” stage. The extrapolation of radiocarbon dates suggests that the most significant changes in the state of the lake occurred at about 6.5–7.1 ka BP (transition from a small lake to a large one with intensified coastal erosion) and at about 5.69 and 3.5 ka BP (increase in the organic component). The results of sequential extraction of elements correspond to chemical changes occurred in a certain time of the lake state by changing in their distribution level and fraction type along the core. The results of lake water evaporation and organic matter degradation modelling performed in Phreeqc for oxic and anoxic condition showed the following stages of chemical divides could be expected in case of further lakes desiccation: Halite—Epsomite—Bischofite/Carnalite with possibility of Nahcolite precipitation in carbonate enriched periods (summer and autumn periods of organic matter degradation). Water–rock interaction processes in combination with biogeochemical reactions affect drastically not only the migration features of elements in water and sediments, but also the type of mineral crystallization in lake sediments.

show abstract

“…The research presented in this paper were carried out at the territory of Kulunda and Barabinsk Steppes (Altay and Novosibirsk regions, Russia) where more than 5000 saline lakes with total area about 4000 km 2 are located [2]. The studied area forms an almost flat basin with a predominantly steppe landscape.…”

Section: Regional Overviewsmentioning

confidence: 99%

“…The main polluters in the southern part of Siberia are the enterprises of chemistry, petrochemistry, power engineering, municipal services and processing of agricultural products [2,3]. For example, in the Altai Territory, with the exception of two landfills for disposal (Altaihimprom OJSC (Yarovoye) and Slavgorod radio plant), there are no specially created sites for industrial and household waste, despite the fact that each year adds an edge about 400 thousand tons of household waste and 750 thousand tons of industrial waste.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal contamination in bottom sediments of saline endorheic lakes of Kulunda and Barabinsk steppes (Western Siberia, Russia)

Kolpakova

2019

E3S Web Conf.

View full text Add to dashboard Cite

The article presents the results of assessment of heavy metals contamination in bottom sediments of saline lakes located on the territory of Kulunda and Barabinsk steppes of Western Siberia, Russia. The territory is characterized by large amount of lakes (more than 5000), including the Chany lake, which is the biggest lake of south of Western Siberia. By calculation the geochemical parameters, such as Enrichment factor, Contamination factor, Geoaccumulation index, Pollution load index, the common level of bottom sediments was classified as unpolluted. However, in comparison with average level of bottom sediment on that territory the lake sediments are enriched with the following elements: Sr> Rb> Zn> V> Cr> Ni> Cu> As> Pb> Th> U> Mn> Fe> K> Ti.

show abstract

Biogeochemical conversion of sulfur species in saline lakes of Steppe Altai

Cited by 5 publications

References 17 publications

Upside down sulphate dynamics in a saline inland lake

Upside down sulphate dynamics in a saline inland lake

Distribution Profile of Chemical Elements during the Last 13 Thousand Years from the Sediments of Maloye Yarovoe Lake (Western Siberia, Russia)

Heavy metal contamination in bottom sediments of saline endorheic lakes of Kulunda and Barabinsk steppes (Western Siberia, Russia)

Contact Info

Product

Resources

About