Description
Selenium is a naturally occurring element, commonly found in rocks and soil. It is a nutrient usually required in small amounts by humans and other organisms, but it can be toxic at only slightly higher levels. Concerns related to the fate and effects of selenium in aquatic ecosystems near mountain coal mines in west-central Alberta arose in the late-1990s. Mobilisation of selenium from geologic sources into surface water due to mining has occurred at three coal mines in the upper McLeod River and upper Smoky River systems. In 2000, Alberta Environment initiated various aquatic studies to: continue and establish new ambient monitoring of selenium and other metals at reference and exposed sites in streams near the three mountain mines; determine selenium levels in surface water and food web of streams, and to evaluate the data in a conceptual food web; and conduct a pilot study to determine selenium levels at old closed coal mines in the foothills of south-western Alberta. This report includes a compilation and summary of data in the Alberta Environment studies from 1998 to 2003 inclusive.
Updated
August 1, 2005
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72 pages
Frequency
Once
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Environment (1971-1992, 1999-2011)
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Date Created
2005-08-01
Date Added
2015-06-22T17:13:01.657587
Date Modified
2005-08-01
Date Issued
2005-08-01
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ISBN (pdf)
077853992x
ISBN (print)
0778539911
NEOS catalogue key
3937745
Local Identifier
T/785
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Information Centre