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Skip to Search Results- 20Graduate and Postdoctoral Studies (GPS), Faculty of
- 20Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 7Biological Sciences, Department of
- 7Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 4Roy Berg Kinsella Research Ranch
- 4Roy Berg Kinsella Research Ranch/Journal Articles (Kinsella Ranch)
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Wolves Influence Elk Movements: Behavior Shapes a Trophic Cascade in Yellowstone National Park
Download2005
Fortin, D., Beyer, H. L., Smith, D. W., Boyce, M. S., Mao, J. S., Duchesne, T.
A trophic cascade recently has been reported among wolves, elk, and aspen on the northern winter range of Yellowstone National Park, Wyoming, USA, but the mechanisms of indirect interactions within this food chain have yet to be established. We investigated whether the observed trophic cascade...
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2007
Merrill, E., Varley, N., Boyce, M. S., Beyer, H. L.
Reintroduction of wolves (Canis lupus) to Yellowstone National Park in 1995–1996 has been argued to promote a trophic cascade by altering elk (Cervus elaphus) density, habitat-selection patterns, and behavior that, in turn, could lead to changes within the plant communities used by elk. We...
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1985
Hoskin, B., Wilk, J., Woolnough, K., Nietfeld, M.
This manual attempts to summarize and highlight information to assist in defining species habitat relationships relevant to Alberta environments and for a number of Alberta wildlife species. The degree of specificity of the summaries, in part or whole, varies according to the background...
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Trade-offs between predation risk and forage differ between migrant strategies in a migratory ungulate
Download2009
Trade-offs between predation risk and forage fundamentally drive resource selection by animals. Among migratory ungulates, trade-offs can occur at large spatial scales through migration, which allows an \"escape'' from predation, but trade-offs can also occur at finer spatial scales. Previous...
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Fall 2019
Ungulates are known to avoid predation by grouping up, increasing vigilance, and reducing residency time among preferred habitats. Similarly, shifting return rates may represent a means of pre-emptively minimizing exposure to risk by being less predictable on the landscape to predators. We...
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The response of Tropical Dry Forests to meteorological drought and El Niño Southern Oscillation
DownloadSpring 2020
As a result of economic pressures from agricultural development, timber extraction, tourism and the expansion of cattle ranching, Tropical Dry Forests (TDFs) are considered one of the most threatened and least protected ecosystems in the neotropics. Interacting with these human-induced effects,...
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The life cycle and systematics of Parelaphostrongylus odocoilei (Nematoda: Metastrongyloidea), a a parasite of mule deer (Odocoileus hemionus hemionus), with special reference to the molluscan intermediate host
Download1978
Doctoral thesis. Study area was within a 9 km radius of Jasper townsite.
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Succession, herbicides, forage nutrition and elk body condition at Mount St. Helens, Washington
DownloadSpring 2014
Concerns have been voiced over recent reductions in forest cutting, herbicide spraying, and past heavy grazing on nutritional resources for elk (Cervus elaphus) and their body condition in the Pacific Northwest. I evaluated the effects of herbicides and herbivory on elk forage in a paired,...
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State-space models link elk movement patterns to landscape characteristics in Yellowstone National Park
Download2007
Smith, D. W., Anderson, D. P., Ives, A. R., Turner, M. G., Beyer, H. L., Boyce, M. S., Forester, J. D., Fortin, D.
Explaining and predicting animal movement in heterogeneous landscapes remains challenging. This is in part because movement paths often include a series of short, localized displacements separated by longer-distance forays. This multiphasic movement behavior reflects the complex response of an...