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Sediment Dynamics for a Changing Future (Proceedings of the ICCE symposium held at Warsaw University of Life Sciences -SGGW, Poland, 1418 June 2010). IAHS Publ. 337, 2010.
 

Summary: Sediment Dynamics for a Changing Future (Proceedings of the ICCE symposium held at
Warsaw University of Life Sciences - SGGW, Poland, 1418 June 2010). IAHS Publ. 337, 2010.
37
Impact of land use activities on fine sediment-associated
contaminants, Quesnel River Basin, British Columbia, Canada
TYLER B. SMITH & PHILIP N. OWENS
Environmental Science Program & Quesnel River Research Centre, University of Northern British Columbia,
Prince George, British Columbia V2N 4Z9, Canada
owensp@unbc.ca
Abstract The impact of various land use activities (forestry, mining, and agriculture) on the quality of fine-
grained sediment (<63 m) was investigated in the Quesnel River Basin (approx. 12 000 km2
) in British
Columbia, Canada. Samples of fine-grained sediment were collected monthly during the snow-free season in
2008 using time-integrated isokinetic samplers at sites representative of forestry, mining, and agricultural
activities in the basin. Samples were also collected from replicate control sites that had undergone limited or
no disturbance in recent years, and also from the main stem of the Quesnel River. Generally, metal and
nutrient concentrations for "impacted" sites were greater than for control sites. Concentrations of As (mining
sites), Cu (forestry sites) and Zn (forestry sites) were close to or exceeded upper Sediment Quality Guideline
(SQG) thresholds, while Se concentrations for mining sites were elevated and within the range cited for
contaminated environments. Phosphorus values were generally <1000 g g-1

  

Source: Aukema, Brian - ukema, Brian - Canadian Forest Service & Ecosystem Science and Management Program, University of Northern British Columbia

 

Collections: Environmental Sciences and Ecology