2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/08/2017 | 12:00 PM - 12:15 PM | ELEVATED HEAVY METAL CONCENTRATIONS IN THE RED DEER RIVER: THE ROLE OF EROSIONAL PROCESSES IN THE ALBERTA BADLANDS | 306A
ELEVATED HEAVY METAL CONCENTRATIONS IN THE RED DEER RIVER: THE ROLE OF EROSIONAL PROCESSES IN THE ALBERTA BADLANDS
We investigated riverine heavy metal (Cd, Cu, Hg and Pb) dynamics in the Red Deer River (RDR) watershed at sites upstream (n = 2) and downstream (n = 7) of the Alberta badlands. At sites draining the badlands, total water column Cd, Cu, Hg and Pb concentrations frequently exceeded guidelines for the protection of freshwater biota. Furthermore, peak concentrations of total Cd (9.8 µg L-1), Cu (212 µg L-1), Hg (649 ng L-1) and Pb (361 µg L-1) were higher than, or comparable to, values reported for rivers and streams heavily impacted by anthropogenic activities. With the exception of Cd, suspended sediment concentrations and metal to aluminum ratios were not indicative of substantial sediment enrichment. Rather, the highly variable and elevated metal concentrations in the RDR watershed were a function of the high and variable suspended sediment fluxes which characterize the river system.
- C10 Biogeochemistry
- C06 Large River Ecology
- C27 Landuse and Non-Point source Impacts
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Presenters/Authors
Jason Kerr
(), Alberta Environment and Parks, jason.kerr@gov.ab.ca;
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Colin Cooke
(), Alberta Environment and parks, colin.cooke@gov.ab.ca;
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