Chemical composition of saline and subsaline lakes of the northern Great Plains, western Canada

Last, William M.

doi:10.1007/bf02904362

Cited by 31 publications

(32 citation statements)

References 33 publications

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“…This heavy use of lakes at the lower end of the salinity gradient limits the use of that study in examining trends in saline lake chemistry at higher salinities. Last (1992) observed relationships among lake salinity, ion concentration, and relative ionic proportions in a study of 49 1 saline lakes distributed across the Canadian Great Plains region. We test whether these relationships accurately describe the chemical behavior of six Alberta lakes (not included in Last's study) in the aspen parklandprairie transition zone.…”

Section: Acknowledgmentsmentioning

confidence: 87%

“…Last (1992) discussed the importance of groundwater chemical composition, precipitation : evaporation ratio, and the position of the lake basin with areas may mask changes in lake-water chemistry that result from climate-driven changes in salinity. Water chemistry-conductivity relationships were examined in a group of 72 "saline" pothole lakes in a small (25-km radius) area of southwestern Manitoba (Barica 1975), but the survey included only six lakes with salinities ~3 g liter-l total dissolved solids.…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…In recent years, increasing concern over the impacts that this climate shift may have on north-temperate lakes has led to the use of long-term climatic and limnological records as means for predicting the chemical and biological changes that may occur in a warmer, drier future. Saline lake paleoecology has been a valuable tool for determining past climate trends in both temperate (Fritz et al 199 1) and subarctic (Pienitz et al 1992) North American lakes, while examining mineral deposition processes in saline lakes and playas may also provide considerable information on past environmental and hydrological conditions (Last 1994). Sedimentary studies combining both biological and mineralogical techniques have been used to determine past salinity changes in Canadian prairie lakes (Hickman and Schweger 1993;Van Stempvoort et al 1993) on a long-term basis; however, these core-based studies lack the fine resolution needed to examine the…”

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confidence: 99%

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Potential effects of climate change on ion chemistry and phytoplankton communities in prairie saline lakes

Evans¹,

Prepas²

1996

Limnology & Oceanography

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Shallow, closed-basin saline lakes found in semiarid areas of Canada tend to be sensitive to changes in precipitation : evaporation ratios. Historical climatic information indicates that the area is becoming increasingly arid and this trend is expected to continue under current climate-change scenarios. The water chemistries and phytoplankton of six Alberta saline (> 1 g liter-' total dissolved solids) lakes were studied over a 12-yr arid period to evaluate potential chemical and biological effects of climate-induced increases in brine conductivity. Major ion concentrations, relative proportions of major ions, chlorophyll a concentrations, and the relative importance of different phytoplankton phyla were evaluated with respect to the increasing conductivity profiles of the lakes and with respect to the range of conductivities represented in the lake series. When the data were combined, concentrations of Na+, K+, Mg 2+, SOd2-, Cl-, and alkalinity were positively correlated with conductivity and Ca2+ was negatively correlated with conductivity. The relative proportions of Na+, SOd2-, and Cl-increased significantly with brine conductivity (2,900-30,900 @), and the proportions of other ions decreased. The variability of these relationships suggests that the brine compositions in some of these lakes are strongly influenced by local surface water and groundwater chemistry. Increases in conductivity were usually accompanied by decreases in Chl a concentration and a shift away from cyanophyte species in favor of chlorophytes, cryptophytes, and chrysophytes. This change in the importance of these phytoplankton phyla, which occurs at relatively low salinities (-3,500 PS cm-*), acts to limit phytoplankton biomass in these P-sufficient systems by restricting the growth of nitrogen-fixing species. Salinity-linked shortages of nutrients other than P may account for these changes,

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Section: Acknowledgmentsmentioning

confidence: 87%

Section: Acknowledgmentsmentioning

confidence: 99%

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confidence: 99%

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Potential effects of climate change on ion chemistry and phytoplankton communities in prairie saline lakes

Evans¹,

Prepas²

1996

Limnology & Oceanography

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“…Sulfate sodium deposits are precipitated especially during cold seasons (Last, 1989;Valero-Garcea 2000;Orti et al 2002). Their presence is related to the dissolution of gypsum and halite (Last 1992). Yagmurlu and Helvaci (1994) suggested that the sulfate-sodium deposit derived from alkaline volcanics and granites.…”

Section: Introductionmentioning

confidence: 99%

Modeling the hydrogeochemical evolution of brine in saline systems: Case study of the Sabkha of Oum El Khialate in South East Tunisia

Nasri

Bouhlila

Saaltink

et al. 2015

Applied Geochemistry

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We studied the effects of evaporation and groundwater flow on the formation of salt minerals in the sabkha of Oum El Khialate in South East Tunisia, which contains large amounts of sulfate sodium mineral deposits. Due to the fact that there are no important surface water bodies present in this sabkha, transport of solutes is dominated by advection rather than mixing in lakes. For our study we used both analytical conservative and numerical reactive transport models. Results showed that salinity varies with distance and may reach very high levels near a watershed where the groundwater flux is zero. As a consequence, reactive transport simulations results showed that more minerals precipitate and water activity decreases values near this watershed. Model results also showed that a sequence of precipitating minerals could be deduced after 140000 years. From the boundary of the sabkha towards the watershed the mineral sequence was dolomite, gypsum, magnesite, bloedite, halite and mirabilite. It was found that the amounts as well as the mineral precipitation distribution strongly depend on salinity and rates of inflowing water.

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“…In arid, semi-arid, and sub-humid regions changes in the balance between precipitation and evaporation can produce distinct changes in ionic concentration and composition, particularly in lakes without a surface outlet and where groundwater is not a major component of the water budget (Fritz & Saros, 2005). In North America, several synoptic surveys have evaluated climatic influences on lacustrine chemistry across large areas of the mid-continent (Gorham et al, 1983;Last, 1992) or on a smaller regional scale (Gos-selin, 1997;Schindler et al, 1996;Winter, 1986;McCarraher & Bruce, 1977).…”

Section: Introductionmentioning

confidence: 99%

Evaluating climatic and non-climatic influences on ion chemistry in natural and man-made lakes of Nebraska, USA

et al. 2007

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Chemical composition of saline and subsaline lakes of the northern Great Plains, western Canada

Cited by 31 publications

References 33 publications

Potential effects of climate change on ion chemistry and phytoplankton communities in prairie saline lakes

Potential effects of climate change on ion chemistry and phytoplankton communities in prairie saline lakes

Modeling the hydrogeochemical evolution of brine in saline systems: Case study of the Sabkha of Oum El Khialate in South East Tunisia

Evaluating climatic and non-climatic influences on ion chemistry in natural and man-made lakes of Nebraska, USA

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