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Skip to Search Results- 11Graduate and Postdoctoral Studies (GPS), Faculty of
- 11Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 4Biological Sciences, Department of
- 4Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 2Cahill Lab of Experimental Plant Ecology
- 2Cahill Lab of Experimental Plant Ecology/Journal Articles (Cahill Lab)
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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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Benthic Responses to Nitrogen and Phosphorus Deposition on Alpine Ponds in Banff National Park: A Replicated Whole-Ecosystem Experiment
DownloadFall 2012
Nitrogen (N) and Phosphorous (P) deposition at high elevations has increased by 40% over the last fifteen years, causing concern for the 3000+ alpine ponds in Banff National Park. A novel whole-ecosystem experiment was used to test for the effects of elevated N and P deposition on benthic...
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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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Experimental evidence for the rapid evolution of behavioral canalization in natural populations
Download2009
Lynch, B.R., Trussell, G.C., Palmer, A.R., Edgell, T.C.
Canalization—the evolutionary loss of the capacity of organisms to develop different phenotypes in different environments— is an evolutionary phenomenon suspected to occur widely, although examples in natural populations are elusive. Because behavior is typically a highly flexible component of an...
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Spring 2016
After decades of recent fire exclusion in southern Alberta, Canada, forests are progressively aging and landscape mosaics are departing from their historical conditions. A large-scale fire history study spanning three natural subregions: Subalpine, Montane and Upper Foothills, was undertaken to...
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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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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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Local Mobile Gene Pools Rapidly Cross Species Boundaries To Create Endemicity within Global Vibrio cholerae Populations
Download2011
Boucher, Y., Tarr, C.L., Cordero, O.X., Takemura, A., Schliep, K., Hunt, D.E., Polz, M.F., Lopez, P., Bapteste, E.
Vibrio cholerae represents both an environmental pathogen and a widely distributed microbial species comprised of closely related strains occurring in the tropical to temperate coastal ocean across the globe (Colwell RR, Science 274:2025–2031, 1996; Griffith DC, Kelly-Hope LA, Miller MA, Am. J....
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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...