Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Factors Influencing Mountain Lion Kill Rates Across Three Ecosystems In The Americas, Steven Cross
Factors Influencing Mountain Lion Kill Rates Across Three Ecosystems In The Americas, Steven Cross
Undergraduate Theses, Professional Papers, and Capstone Artifacts
Kill rate, defined as the number of prey killed per predator per unit time, is a key component to understanding predator-prey dynamics. A multitude of factors may affect kill rates, including, variation in age, sex, weight, or presence of offspring of either predator or prey species (intraspecific variation) and events such as the theft of a kill made by another animal (kleptoparasitism). These factors may influence the time a predator spends locating prey (search time) and the pursuing, killing, and consumption of prey (handling time). The sum of search time and handling time may be measured as the time between …
High-Resolution Mapping Of Hierarchical Greater Sage-Grouse Nesting Habitat: A Grain-Spectrum Approach In Northwestern Wyoming, Robert T. Haynam Iii
High-Resolution Mapping Of Hierarchical Greater Sage-Grouse Nesting Habitat: A Grain-Spectrum Approach In Northwestern Wyoming, Robert T. Haynam Iii
Graduate Student Theses, Dissertations, & Professional Papers
Our overall objective was to create a probabilistic nesting-habitat map for the Jackson Hole sage-grouse population that would have utility as a tool for future research, conservation, and management. The models that we developed for this purpose were specified to evaluate whether sage-grouse may be selecting nesting-habitat characteristics simultaneously at various spatial scales. Our spatially-explicit landscape-scale research was implemented primarily with readily available National Agriculture Imagery Program (NAIP) data. All nesting data was collected from 2007-2010. We tested how a broad range of grain sizes (spatial resolution) of covariate values affected the fit to logistic regression models used to estimate …
Why Did The Walleye Cross The Reservoir? Explaining Adult Walleye Use Of The Missouri River Upstream Of Canyon Ferry Reservoir To Toston Dam, Tanner M. Traxler
Why Did The Walleye Cross The Reservoir? Explaining Adult Walleye Use Of The Missouri River Upstream Of Canyon Ferry Reservoir To Toston Dam, Tanner M. Traxler
Undergraduate Theses, Professional Papers, and Capstone Artifacts
Over the last decade, walleye (Sander vitreus) have been increasingly using the Missouri River upstream of Canyon Ferry Reservoir to Toston Dam, and Montana Fish, Wildlife, and Parks wants to understand why these walleye are moving upstream and how it could impact the existing fish community in the river. To understand if this expansion of habitat could be associated with spawning and/or foraging, we examined the composition and distribution of juvenile fish in the area. Specifically, the presence of juvenile walleye would indicate that adult walleye were using the river to spawn and/or if there were abundant prey …
Integrated Stress And Community Perceptions: Toward An Understanding Of Human-Cougar Tolerance, Lara Brenner
Integrated Stress And Community Perceptions: Toward An Understanding Of Human-Cougar Tolerance, Lara Brenner
Graduate Student Theses, Dissertations, & Professional Papers
Evidence suggests that cougars (Puma concolor) are beginning to recolonize their traditional range in the Midwestern and Eastern US, returning to a landscape and a social environment that have changed drastically in a century of absence. Any hope of the cougar’s persistence depends on both human tolerance of their presence and on cougar tolerance of disrupted habitat. In this thesis, we took advantage of diverse cougar policy in place in the Western US to explore variation in human attitudes and acceptability of cougars and in the cougar stress response. We validated a process to identify and extract cortisol …