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Skip to Search Results- 9Biogeochemistry
- 2Oil sands reclamation
- 1 Carbon
- 1Anthropogenic
- 1Athabasca oil sands region
- 1Biology
- 1Baker, Matthew G
- 1Bandara, Sasiri
- 1Bourgeois, Alyssa K
- 1Frei, Rebecca J
- 1Heffernan, William
- 1Jamro, Ghulam M
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Assessing landscape influences on the base of the aquatic food web across the North Saskatchewan River basin
DownloadSpring 2024
Anthropogenic activities are forcing a shift in landscape types and climate regimes with concomitant effects on runoff draining into regional rivers and downstream water quality. Stream microbial communities at the base of aquatic food webs play an important role in overall ecosystem health, yet...
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Assessing Spatial and Temporal Variation in Source Water Quality and Drinking Water Treatability Across a Gradient of Forest Harvest on Vancouver Island, BC
DownloadFall 2021
On Canada’s Pacific Coast, forestry is integral to society. Although economically important, harvesting practices may alter source waters that originate in forested watersheds through changes in suspended solids (SS) and dissolved organic matter (DOM). Each of these metrics has the potential to...
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COARSE WOODY DEBRIS EFFECTS ON BIOGEOCHEMISTRY IN TWO RECONSTRUCTED SOILS IN THE ATHABASCA OIL SANDS REGION IN ALBERTA, CANADA
DownloadFall 2015
Forest floor mineral soil mix (FMM) and peat mineral soil mix (PMM) are cover soils commonly used for land reclamation post open pit oil sands mining in northern Alberta, Canada. While in such land reclamation practices the organic matter comes from the peat material salvaged before land...
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Consequences of peatland disturbance for dissolved organic matter and nutrient transport and fate in northern catchments
DownloadFall 2023
Northern peatlands contain ~415 Pg of carbon (C) in soil organic matter and are significant sources of dissolved organic matter (DOM) in inland waters. DOM includes a range of molecules that are C-rich and may also contain nitrogen (N) and phosphorus (P). The escalating disturbance of peatlands...
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Rapid thaw-driven geomorphic change transforms fluvial, sedimentary, and biogeochemical environments in the Willow River, NT
DownloadSpring 2023
The effects of global climate change are acute in permafrost environments. In the western Canadian Arctic, permafrost degradation of ice-rich slopes is resulting in the development of thermokarst and other forms of mass wasting, which transports previously frozen materials into aquatic systems....
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Records of atmospheric mercury deposition and post-depositional mobility in peat permafrost archives from central and northern Yukon, Canada
DownloadFall 2017
Environmental archives provide a feasible means for studying the biogeochemical cycling of heavy metals including mercury (Hg). Although many temperate peat bogs have been successfully used to reconstruct natural and anthropogenic atmospheric Hg deposition fluxes, northern circumpolar permafrost...
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SOIL BIOGEOCHEMICAL PROCESSES AND FINE ROOT DYNAMICS OF VEGETATION IN LFH MINERAL SOIL MIX AND PEAT MINERAL SOIL MIX ORGANIC CAPPING MATERIALS USED FOR OIL SANDS RECLAMATION
DownloadFall 2016
Peat mineral soil mix (PMM) and LFH, identifiable litter (L), fragmented litter (F) and humus (H), mineral soil (MS) mix are organic capping materials commonly used over overburden (OB) and tailings sand (TS) substrate materials in oil sands reclamation. These organic capping materials have...
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Spring 2020
Permafrost peatlands in northern regions store a significant proportion of global soil carbon and have historically played an important role in global carbon cycling. Recent warming is accelerating permafrost thaw and causing thermokarst formation. Thermokarst formation in peatlands leads to a...
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The role of microbial extracellular polymeric substances in psychrotolerance and geochemistry of subglacial environments
DownloadFall 2012
Extracellular polymeric substances (EPS) were investigated to determine their potential role in microbial cryotolerance in the subglacial environment. The cell surface chemistry of Hymenobacter aerophilus cells, with and without EPS, was determined using potentiometric titrations and cadmium...