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Assessing Algal Community Structure and Nutrient Uptake Kinetics Across a Nutrient Gradient in Agricultural Streams
DownloadFall 2020
Streams provide important ecosystem services, such as the transformation of organic matter and water purification, while transporting water from headwaters to larger receiving waterbodies downstream. Excess nutrients introduced through anthropogenic land use put stress on aquatic ecosystems and...
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Assessment of Perennial Cereals in Central Alberta: Environmental Performance and Productivity
DownloadFall 2023
Despite their paramount importance, modern, high-input agroecosystems used for annual grain production are often characterized as degraded systems with substantial greenhouse gas (GHG) emissions, namely nitrous oxide (N2O), a GHG 273x more potent than carbon dioxide (CO2) on a mass basis....
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Aviat diamonds: a window into the deep lithospheric mantle beneath the Northern Churchill Province
DownloadFall 2012
The northern Churchill Province is an intensely explored, yet poorly researched target area for diamonds. I examined the mantle sources and residence history of diamonds from Aviat, located on the Melville Peninsula. Aviat diamonds display a δ13C range extending far below the average mantle value...
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Growth Characterization and Transcriptomics of Methanotrophic Bacteria as Effected by Carbon and Nitrogen Sources
DownloadFall 2019
While industrial activities have shaped our modern world and lifestyles, one of their many important environmental effects is the significant increase in methane emissions and the resultant atmospheric methane concentrations. A common byproduct of many industries, methane is often burned off as...
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Integrating enhanced efficiency fertilizers and nitrogen rates to improve Canada Western Red Spring wheat production in the Canadian prairies
DownloadSpring 2023
Canada Western Red Spring (CWRS) wheat (Triticum aestivum L.) is the most widely grown wheat class in western Canada. This is mainly due to its excellent milling and baking quality, concomitant with a high protein concentration. Adequate nitrogen (N) supply is important to achieve optimal CWRS...
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Interactions among Nitrogen Input, Nitrification Inhibition, Edaphic and Environmental Conditions on N2O Fluxes and associated Biological Processes in Central Alberta Soils
DownloadFall 2020
Increasing atmospheric concentration of nitrous oxide (N2O) emissions due to intensified human activities is of concern, as N2O is not only a precursor for stratospheric ozone destruction but also an important greenhouse gas. Agriculture accounted for about 82% of the anthropogenic N2O production...
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Long-term grazing effects on soil greenhouse gases emission and soil microbial communities of Alberta grasslands
DownloadFall 2018
Grasslands cover a large area of the terrestrial surface and their soils store vast amounts of carbon (C) and nitrogen (N). Small changes in the processes driving C and N cycling can lead to either sequestration of these elements or their release as greenhouse gases (GHG) into the atmosphere....