Limits...
Chemical and physical properties of some saline lakes in Alberta and Saskatchewan.

Bowman JS, Sachs JP - Saline Syst. (2008)

Bottom Line: Many of these lakes are ecologically and economically significant to the Great Plains Region.The wide range of salinities found across a small geographic area makes the Canadian saline lakes region ideal for testing salinity proxies.This acceleration has ecological implications for the migratory bird species found within the Redberry Important Bird Area.

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Affiliation: School of Oceanography, University of Washington, Seattle 98195-5351, USA. bowmanjs@u.washington.edu

ABSTRACT

Background: The Northern Great Plains of Canada are home to numerous permanent and ephemeral athalassohaline lakes. These lakes display a wide range of ion compositions, salinities, stratification patterns, and ecosystems. Many of these lakes are ecologically and economically significant to the Great Plains Region. A survey of the physical characteristics and chemistry of 19 lakes was carried out to assess their suitability for testing new tools for determining past salinity from the sediment record.

Results: Data on total dissolved solids (TDS), specific conductivity, temperature, dissolved oxygen (DO), and pH were measured in June, 2007. A comparison of these data with past measurements indicates that salinity is declining at Little Manitou and Big Quill Lakes in the province of Saskatchewan. However salinity is rising at other lakes in the region, including Redberry and Manito Lakes.

Conclusion: The wide range of salinities found across a small geographic area makes the Canadian saline lakes region ideal for testing salinity proxies. A nonlinear increase in salinity at Redberry Lake is likely influenced by its morphometry. This acceleration has ecological implications for the migratory bird species found within the Redberry Important Bird Area.

No MeSH data available.


TDS vs. lake surface elevation at Redberry Lake. TDS was derived by the equation displayed in Fig. 10. Derived TDS are shown to correlate well with surface elevation [29] at Redberry Lake. This correlation reflects the increasing rate of salinity change at Redberry.
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Figure 13: TDS vs. lake surface elevation at Redberry Lake. TDS was derived by the equation displayed in Fig. 10. Derived TDS are shown to correlate well with surface elevation [29] at Redberry Lake. This correlation reflects the increasing rate of salinity change at Redberry.

Mentions: Redberry Lake possesses a roughly conical basin morphology, as illustrated by Hammer in Fig. 12[4]. As the surface area to volume ratio of Redberry Lake increases with decreasing lake depth, the fraction of the lake which evaporates each year will increase in a nonlinear manner. Fig. 13 illustrates this effect. Annual TDS for Redberry Lake are determined as a function of time according to the equation shown in Fig. 10. The close correlation between lake surface elevation above sea level [29] and TDS (which increases inverse to the decrease in volume) can be seen along with a nonlinear decrease in the ratio of lake elevation to TDS.


Chemical and physical properties of some saline lakes in Alberta and Saskatchewan.

Bowman JS, Sachs JP - Saline Syst. (2008)

TDS vs. lake surface elevation at Redberry Lake. TDS was derived by the equation displayed in Fig. 10. Derived TDS are shown to correlate well with surface elevation [29] at Redberry Lake. This correlation reflects the increasing rate of salinity change at Redberry.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2365950&req=5

Figure 13: TDS vs. lake surface elevation at Redberry Lake. TDS was derived by the equation displayed in Fig. 10. Derived TDS are shown to correlate well with surface elevation [29] at Redberry Lake. This correlation reflects the increasing rate of salinity change at Redberry.
Mentions: Redberry Lake possesses a roughly conical basin morphology, as illustrated by Hammer in Fig. 12[4]. As the surface area to volume ratio of Redberry Lake increases with decreasing lake depth, the fraction of the lake which evaporates each year will increase in a nonlinear manner. Fig. 13 illustrates this effect. Annual TDS for Redberry Lake are determined as a function of time according to the equation shown in Fig. 10. The close correlation between lake surface elevation above sea level [29] and TDS (which increases inverse to the decrease in volume) can be seen along with a nonlinear decrease in the ratio of lake elevation to TDS.

Bottom Line: Many of these lakes are ecologically and economically significant to the Great Plains Region.The wide range of salinities found across a small geographic area makes the Canadian saline lakes region ideal for testing salinity proxies.This acceleration has ecological implications for the migratory bird species found within the Redberry Important Bird Area.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Oceanography, University of Washington, Seattle 98195-5351, USA. bowmanjs@u.washington.edu

ABSTRACT

Background: The Northern Great Plains of Canada are home to numerous permanent and ephemeral athalassohaline lakes. These lakes display a wide range of ion compositions, salinities, stratification patterns, and ecosystems. Many of these lakes are ecologically and economically significant to the Great Plains Region. A survey of the physical characteristics and chemistry of 19 lakes was carried out to assess their suitability for testing new tools for determining past salinity from the sediment record.

Results: Data on total dissolved solids (TDS), specific conductivity, temperature, dissolved oxygen (DO), and pH were measured in June, 2007. A comparison of these data with past measurements indicates that salinity is declining at Little Manitou and Big Quill Lakes in the province of Saskatchewan. However salinity is rising at other lakes in the region, including Redberry and Manito Lakes.

Conclusion: The wide range of salinities found across a small geographic area makes the Canadian saline lakes region ideal for testing salinity proxies. A nonlinear increase in salinity at Redberry Lake is likely influenced by its morphometry. This acceleration has ecological implications for the migratory bird species found within the Redberry Important Bird Area.

No MeSH data available.