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Spatial-Temporal Responses Of Cow Elk To Targeted And Non-Targeted Hunting Risk, Randall Mcbride
Spatial-Temporal Responses Of Cow Elk To Targeted And Non-Targeted Hunting Risk, Randall Mcbride
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Predation is one of the most important interspecies interactions that affect a wildlife population. Predator-prey interactions may cause species to shift their behavior, such as changing the use of their habitat in both space and time, based on their ability to assess risk. Wildlife population responses to predation stresses have been studied in the past, but individuals' responses to these stresses have not been studied in fine detail. For this study, cow elk were collared with GPS collars, and hunters carried hand-held GPS units. GPS locations were taken at 10-minute intervals for both cow elk and hunters during the hunting …
Quantifying The Indirect Effect Of Wolves On Aspen In Northern Yellowstone National Park: Evidence For A Trophic Cascade?, Elaine M. Brice
Quantifying The Indirect Effect Of Wolves On Aspen In Northern Yellowstone National Park: Evidence For A Trophic Cascade?, Elaine M. Brice
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Yellowstone National Park is renowned for its incredible wildlife, and perhaps the most famous of these species is the gray wolf, which was reintroduced to the Park in the mid-1990s. After reintroduction, it was highly publicized by scientists, journalists, and environmentalists that the wolf both decreased elk density and changed elk behavior in a way that reduced elk effects on plants, a process known as a “trophic cascade.” Aspen, which is eaten by elk in winter, is one species at the forefront of Yellowstone trophic cascade research because it has been in decline across the Park for over a century. …