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Skip to Search Results- 7Graduate and Postdoctoral Studies (GPS), Faculty of
- 7Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 2Cahill Lab of Experimental Plant Ecology
- 2Cahill Lab of Experimental Plant Ecology/Journal Articles (Cahill Lab)
- 2Renewable Resources, Department of
- 2Renewable Resources, Department of/Journal Articles (Renewable Resources)
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2004
Shotyk, W., Norenberg, T., Goodsite, M. E. G.
Abstract: An improved corer and associated equipment for obtaining continuous samples of frozen peat are described. We developed the system through laboratory and field trials-on Bathurst Island, Nunavut, Canada in 2000 and Nordvesto, Carey Islands, Greenland, in 2001-as part of efforts to...
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Fall 2016
Prairie wetlands provide many important ecosystem services including supporting biodiversity, improving water quality, preventing erosion, recharging groundwater, and attenuating floods. However, more than half of prairie wetlands in North America have been lost, primarily due to drainage for...
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Consequences of mountain pine beetle outbreak on forest ecosystem services in western Canada
Download2016-01-01
Dhar, Amalesh, Parrott, Lael, Heckbert, Scott
After affecting millions of hectares of pine forests in western Canada , the mountain pine beetle (MPB; Dendroctonous ponderosae Hopkins) is spreading out of its native range and into Canada's boreal forest . Impacts of outbreaks can be environmental, economic, and social, and an ecosystem...
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2003
Tonn, W.M., Katopodis, C., Jones, N.E., Scrimgeour, G.J.
We examined spatiotemporal variation in the physical, chemical, and biological characteristics of pristine streams that represent a range of conditions near Lac de Gras in the Barrenlands region of the Northwest Territories, Canada. Principal component analysis organized streams into four groups...
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2013
Gardner Costa, J.M., Daly, c., Kovalenko, K.E., Dixon, D.G., Ciborowski, J.J.H., Slama, C.A., Kennedy, K., Foote, A.L., Liber, K., Smits, J.E.G., Frederick, K.R., Roy, M.C., Farwell, A.J.
Boreal wetlands play an important role in global carbon balance. However, their ecosystem function is threatened by direct anthropogenic disturbance and climate change. Oil sands surface mining in the boreal regions of Western Canada denudes tracts of land of organic materials, leaves large areas...
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Spring 2014
The worldwide biodiversity crisis has intensified the need to better understand how biodiversity and human disturbance are related. Yet this relationship lacks both consensus in theoretical expectations and consistency in observed empirical patterns. I present one of the largest extent studies...
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Influence of forest canopies on the deposition of methylmercury to boreal ecosystem watersheds
DownloadFall 2010
Methylmercury (MeHg) is a potent vertebrate neurotoxin and a contaminant of global concern. Increased anthropogenic emissions of mercury (Hg) to the atmosphere have led to increased bioaccumulation of MeHg in top predatory organisms such as fish, the consumption of which is the main exposure...
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Limited impacts of extensive human land use on dominance, specialization, and biotic homogenization in boreal plant communities
Download2015-01-01
Mayor, S. J., Boutin, S., He, F., Cahill, J. F.
Background Niche theory predicts that human disturbance should influence the assembly of communities, favouring functionally homogeneous communities dominated by few but widespread generalists. The decline and loss of specialists leaves communities with species that are functionally more similar....
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Spring 2018
Climate change will continue to affect the Arctic more intensely than other biomes. These changes can have dramatic effects on biotic interactions that influence the functioning of these systems, including plant-herbivore interactions. Invertebrate herbivores strongly depend on external...
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Perspectives on Large Volume & Diverse Data Sets: Tundra and Climate Interactions in the Southwest Yukon
Download2012
Hik, David, Williamson, Scott, Gamon, John
Presentation given at the 2012 University of Alberta Campus Data Summit, March 22-23, 2012.