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.

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.


Redberry. Depth profile for Redberry Lake with temperature (C), specific conductivity (mS cm-1 at 25°C), and DO (mg L-1). DO is seen to parallel specific conductivity down to the oxygen maximum at 7 m.
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Figure 9: Redberry. Depth profile for Redberry Lake with temperature (C), specific conductivity (mS cm-1 at 25°C), and DO (mg L-1). DO is seen to parallel specific conductivity down to the oxygen maximum at 7 m.

Mentions: Redberry is a large mesosaline lake located north of Saskatoon at the Redberry Lake UN Biosphere Reserve. The reserve is a critical habitat for several species of migratory birds, most notably the American white pelican and piping plover [29]. Based on turbidity Redberry was the most oligotrophic lake investigated with a Secchi depth of 4 m. This comparison is consistent with observations made by Waiser and Roberts [35]. Measurements were made in 10 m of water, maximum lake depth is 17 m [35]. Water chemistry data for Redberry are presented in Table 2 and the depth profiles of temperature, specific conductivity, and DO with depth are shown in Fig. 9. This figure shows a strong parallel between specific conductivity and dissolved oxygen down to the oxygen maximum at 7.5 m. Both a strong pycnocline and chemocline were present at this depth. Sediment from 10 m was grey with a green and cream colored covering and did not smell of hydrogen sulfide. Historic ion concentrations in Redberry Lake are 93.1% of total anions for SO4 2- and 67.4% of total cations for Mg2+ [1]. Redberry was the only lake investigated where Mg2+ was the dominant cation. Access to Redberry Lake was through the park entrance on the west side of the lake.


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

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

Redberry. Depth profile for Redberry Lake with temperature (C), specific conductivity (mS cm-1 at 25°C), and DO (mg L-1). DO is seen to parallel specific conductivity down to the oxygen maximum at 7 m.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 9: Redberry. Depth profile for Redberry Lake with temperature (C), specific conductivity (mS cm-1 at 25°C), and DO (mg L-1). DO is seen to parallel specific conductivity down to the oxygen maximum at 7 m.
Mentions: Redberry is a large mesosaline lake located north of Saskatoon at the Redberry Lake UN Biosphere Reserve. The reserve is a critical habitat for several species of migratory birds, most notably the American white pelican and piping plover [29]. Based on turbidity Redberry was the most oligotrophic lake investigated with a Secchi depth of 4 m. This comparison is consistent with observations made by Waiser and Roberts [35]. Measurements were made in 10 m of water, maximum lake depth is 17 m [35]. Water chemistry data for Redberry are presented in Table 2 and the depth profiles of temperature, specific conductivity, and DO with depth are shown in Fig. 9. This figure shows a strong parallel between specific conductivity and dissolved oxygen down to the oxygen maximum at 7.5 m. Both a strong pycnocline and chemocline were present at this depth. Sediment from 10 m was grey with a green and cream colored covering and did not smell of hydrogen sulfide. Historic ion concentrations in Redberry Lake are 93.1% of total anions for SO4 2- and 67.4% of total cations for Mg2+ [1]. Redberry was the only lake investigated where Mg2+ was the dominant cation. Access to Redberry Lake was through the park entrance on the west side of the lake.

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.