Changes in the biota of Chany Lake along a salinity gradient

Kipriyanova, L. M.; Yermolaeva, N. I.; Bezmaternykh, D. M.; Dvurechenskaya, S. Ya.; Mitrofanova, E. Yu.

doi:10.1007/s10750-006-0295-9

Cited by 41 publications

(28 citation statements)

References 12 publications

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“…The rest of sites did not show such clear habitat degradation; however, conductivity was high enough to reduce aquatic vegetation. These findings align with previous studies, which reported that most freshwater macrophyte species can be damaged by conductivities ranging from 1.5 to 3 mS cm -1 (Dunlop et al, 2005;Hart et al, 1991;James et al, 2003;Kipriyanova et al, 2007).…”

Section: Discussionsupporting

confidence: 92%

Impact of potash mining in streams: the Llobregat basin (northeast Spain) as a case study

2016

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Potash mining is significantly increasing the salt concentration of rivers and streams due to lixiviates coming from the mine tailings. In the present study, we have focused on the middle Llobregat basin (northeast Spain), where an important potash mining activity exists from the beginning of the XX century. Up to 50 million tonnes of saline waste have been disposed in the area, mainly composed of sodium chloride. We assessed the ecological status of streams adjacent to the mines by studying different physicochemical and hydromorphological variables, as well as aquatic macroinvertebrates. We found extraordinary high values of salinity in the studied streams, reaching conductivities up to 132.4 mS/cm. Salt-polluted streams were characterized by a deterioration of the riparian vegetation and the fluvial habitat. Both macroinvertebrate richness and abundance decreased with increasing salinity. In the most polluted stream only two families of macroinvertebrates were found: Ephydridae and Ceratopogonidae. According to the biotic indices IBMWP and IMMi-T, none of the sites met the requirements of the Water Framework Directive (WFD; i.e., good ecological status). Overall, we can conclude that potash-mining activities have the potential to cause severe ecological damage to their surrounding streams. This is mainly related to an inadequate management of the mine tailings, leading to highly saline runoff and percolates entering surface waters. Thus, we urge water managers and policy makers to take action to prevent, detect and remediate salt pollution of rivers and streams in potash mining areas.

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Section: Discussionsupporting

confidence: 92%

Impact of potash mining in streams: the Llobregat basin (northeast Spain) as a case study

2016

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“…In nature, increased salinity levels between 1 and 5 g dm − 3 cause a reduction in both species richness and abundance of zooplankton. Similar results were found by Kipriyanova et al (2007) who noticed a decrease in species richness of zooplankton from 61 to 16 species as salinity increased from 0.8 to 6.4 g dm − 3 . The hatching of resting eggs was inhibited at higher salinity levels between 16 and 32 g dm − 3 .…”

Section: Discussionsupporting

confidence: 89%

“…Such high salt concentrations can be toxic for water organisms (Cowgill and Milazzo 1990;Kipriyanova et al 2007). Most macroinvertebrates are able to live at salinity levels < 2 g dm − 3 , but for some macroinvertebrates, the salinity threshold is below 1 g dm − 3 .…”

Section: Discussionmentioning

confidence: 99%

Unique Pit Lake Created in an Opencast Potassium Salt Mine (Dombrovska Pit Lake in Kalush, Ukraine)

et al. 2018

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We studied the physicochemical and biological characteristics of the Dombrovska pit lake in Ukraine. The lake formed in an abandoned opencast potassium salt mine and is one of the most saline inland water bodies in the world. It is 85 m deep (November 2015) and an annual inflow of about 2 Mm 3 of water. The lake has two distinct layers. The mesohaline surface (0-5 m) layer is well oxygenated and slightly alkaline (pH = 7.5-8.8). Its mineralization, expressed as dry mass, was 50-134 g dm − 3 , and its electrical conductivity (EC) was 58-134 mS cm − 1 . The underlying layer consists of hypersaline water with low amounts of dissolved oxygen, a neutral pH (6.7-7.4), high mineralization (179-420 g dm − 3 ), high EC (169-215 mS cm − 1 ), and higher concentrations of major anions and cations (except Ca 2+ ) and nutrients than the overlying water. The vertical relationship between major ions and metals and the future salinity of the lake are discussed. In terms of zooplankton, in July we found living specimens of the rotifer Brachionus plicatilis and the ciliates Paradileptus elephantinus and Tindinnidium sp. as well as dead rotifers, cladocerans, and copepods (in total, 19 species), but only live B. plicatilis and 9 dead species in November. In the littoral part of the pit lake, we found the diatoms Nitzschia pusilla and some Halamphora species (H. borealis, H. tenerrima, H. acutiuscula), which favour highly saline waters.

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“…Since, throughout the study in Ojo de Agua Uriburu no predators were recorded and food availability (represented by phytoplankton chlorophyll-a) was always relatively high, the idea of a modulatory effect of salinity on the zooplankton community could be supported by the fact that richness was high while the lake remained in the mesosaline interval but declined once the lake surpassed the threshold of hypersalinity. Consequently, in the last two months of the sampling period, only the halotolerant B. poopoensis was found.This decrease in richness is consistent with that recorded in the Great Salt Lake (USA), where four species were recorded when salinity was close to 50 g L −1 but only one species was found when salinity was close to 250 g L −1 (Wurtsbaugh & Berry, 1990); and in the Siberian Lake Chany, where an increase in salinity from 0.8 g L −1 to 6.4 g L −1 caused a decrease in zooplankton richness from 61 to 16 species (Kipriyanova et al 2007). However, caution should be taken before reaching any conclusion, since the absence of significant statistical correlations among the studied environmental variables (water temperature and salinity), and the zooplankton parameters (density and biomass) is by no means a confirmation of a negative effect of increasing salinity on these biological parameters.…”

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confidence: 89%

Environmental and zooplankton parameter changes during the drying of a saline shallow temporary lake in central Argentina

Vignatti¹,

Cabrera

Canosa³

et al. 2017

Univ. Sci.

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Central Argentina has numerous saline lakes sustained by groundwater sources and rainfall. These lakes are temporary and experience significant changes in water level and salinity, depending on wet and dry climate cycles. This study aims to investigate the scarcely known dynamics of environmental and zooplankton parameters during the drying phase of one of these lakes. Monthly samples were taken from December 2 012 to July 2 013 in the Ojo de Agua Uriburu lake, previous to its drying. At the beginning of the study, the lake's depth was 0.7 m and its salinity was 16.65 g L −1 , later, in July, its depth decreased to 0.06 m and its salinity increased to 92.9 g L −1 . Zooplankton species richness was low (three crustaceans and three rotifers), with Boeckella poopoensis and Moina eugeniae dominating in the system. Maximum density and biomass were attained by the two dominant species in April (318.5 i nd L −1 and 3 029.1 µg L −1 dry weight; and 242.4 i nd L −1 and 1 530.4 µg L −1 dry weight, for B. poopoensis and M. eugeniae, respectively), and no correlation was found between these parameters and salinity. Maximum average body lengths for both species were observed in the last months of sampling (M. eugeniae: 1 020 ± 84.2 µm and B. poopoensis: 1 348.8 ± 89.0 µm). At this point of the study, neither juvenile nor larval stages were found. The increase in average body size is, arguably, the result of increased salinity in the system through a negative effect on reproduction. Because this lake reached hypersalinity, its ecological dynamics are unique among those of other temporary, saline lakes that dried in central Argentina. Similar studies on other temporary ecosystems are needed to increase the information on these little known ecological aspects.Keywords: temporary lake; saline lake; hydroperiod; zooplankton; Boeckella poopoensis; Moina eugeniae. IntroductionTemporary lakes contain water during periods as short as a few months and up to several years (Schwartz & Jenkins, 2000). These lakes are globally distributed, and their sizes range from a few square meters to hundreds of (Williams, 1987;Schwartz & Jenkins, 2000). Many of these ecosystems are disappearing because of anthropic activity, including their transformation into agricultural fields (Belk, 1998;Williams, 2002;Jenkins et al. 2003; Eitam et al. 2004). The transformation and destruction of these ecosystems leads to species loss, thus significantly affecting local biodiversity (Waterkeyn et al. 2008).Most water bodies in La Pampa province, a central semiarid region of Argentina, are shallow (maximum depth < 3 m), temporary lakes. These lakes occur in arheic basins, where surface runoff flows unpredictably due to lack of drainage patterns (Mann, 2002; World Meteorological Organization, 2012;Meybeck et al. 2013), and they are formed by phreatic input and, to a lesser extent, by rainfall (Dornes et al. 2016).Most of the Pampean temporary lakes are saline; with ions such as Na + and Cl − predominating in their composition (Echaniz, 2010), and concentr...

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Changes in the biota of Chany Lake along a salinity gradient

Cited by 41 publications

References 12 publications

Impact of potash mining in streams: the Llobregat basin (northeast Spain) as a case study

Impact of potash mining in streams: the Llobregat basin (northeast Spain) as a case study

Unique Pit Lake Created in an Opencast Potassium Salt Mine (Dombrovska Pit Lake in Kalush, Ukraine)

Environmental and zooplankton parameter changes during the drying of a saline shallow temporary lake in central Argentina

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