Trace Metal Concentrations in an Intensive Agricultural Watershed in British Columbia, Canada1

:  Effects of agricultural intensification and a naturally occurring landslide of asbestos material upon water and sediment quality in a transboundary watershed were investigated. The water and sediments of the Sumas River watershed were analyzed for copper (Cu), zinc (Zn), chromium (Cr), and nickel...

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Bibliographic Details
Published in:Journal of the American Water Resources Association 2007-12, Vol.43 (6), p.1455-1467
Main Authors: Smith, Ione M., Hall, Ken J., Lavkulich, Les M., Schreier, Hans
Format: Article
Language:English
Subjects:
Agricultural production
agriculture
Asbestos
British Columbia
diffusive gradient thin film technique
Hogs
Land use
land use intensification
metals
nonpoint source pollution
sediment
Sediments
Soils
Water pollution
watershed management
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Summary::  Effects of agricultural intensification and a naturally occurring landslide of asbestos material upon water and sediment quality in a transboundary watershed were investigated. The water and sediments of the Sumas River watershed were analyzed for copper (Cu), zinc (Zn), chromium (Cr), and nickel (Ni) concentrations in 1993/1994 and 2003/2004 and differences within sites over time were examined. Based upon a review of the literature, Cu and Zn were used as indicators of agricultural impacts while Cr and Ni were used as indicators of impacts from an asbestos landslide. Animal unit equivalents (AUEs) were calculated on a per area basis as an indicator of livestock density using detailed statistical census data. Whatman #42 filtered metals, bioavailable metals, and sediment‐bound metals (in the
ISSN:1093-474X
1752-1688
DOI:10.1111/j.1752-1688.2007.00121.x