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American Black Bears (Ursus Americanus) Of The Paunsaugunt Plateau: Movements And Habitat Use, Rebekah Adriana Castro Dungan
American Black Bears (Ursus Americanus) Of The Paunsaugunt Plateau: Movements And Habitat Use, Rebekah Adriana Castro Dungan
Theses and Dissertations
Concerns over human-bear conflict and questions about the ecology of Paunsaugunt Plateau's population of black bears (Ursus americanus) arose due to their visitation to popular recreation sites. Greater insight about bears and their habitat use provides a foundation for conflict mitigation and effective management decisions. Between 2014 and 2017, seventeen black bears (11 female, 6 male) were fitted with global positioning system (GPS) radio-collars so that we could track their locations, daily activity patterns, and ambient temperatures. By analyzing bear locations, we calculated annual and seasonal home ranges for 16 bears, including 25 den sites. Home ranges typically consisted of …
Landscape Of Stress: Does Drought Prevail Over Anthropogenic Activity In Influencing Cortisol Levels And Fitness In The Pacific Fisher?, Jennifer R. Kordosky
Landscape Of Stress: Does Drought Prevail Over Anthropogenic Activity In Influencing Cortisol Levels And Fitness In The Pacific Fisher?, Jennifer R. Kordosky
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Fishers (Pekania pennanti) are a species of concern in the Sierra Nevada Mountains of California. Cortisol is a glucocorticoid hormone released to mobilize energy in response to stress and has been used as an indication of an individual’s physiological response to its environment. By collecting samples of fisher hair and measuring an individual’s cortisol, we examined the physiological stress response of the animals to human disturbances (housing density, road density, habitat type, and silvicultural treatements) and drought (tree mortality) in their home ranges. Using AICc model selection, we found that levels of tree mortality within a fisher’s home …
Factors Influencing Parental Care And Home Range Size Of A Monomorphic Species, The Red-Headed Woodpecker (Melanerpes Erythrocephalus), L. Abigail Walter
Factors Influencing Parental Care And Home Range Size Of A Monomorphic Species, The Red-Headed Woodpecker (Melanerpes Erythrocephalus), L. Abigail Walter
Theses and Dissertations
Parental care in animals can be costly and is shared between both parents in many bird species. Not surprisingly, most studies of how parental care is shared between the sexes are in sexually dimorphic species, and much less in known about sexually monomorphic species where sex cannot be determined in the field. This has prevented a full understanding of parental care behaviors – which are intrinsically linked to fitness – in species such as the Red-headed Woodpecker (Melanerpes erythrocephalus) that is experiencing population declines throughout much of its range. In this study we assessed whether Redheaded Woodpecker brooding time, nestling …
Annual And Seasonal Measurements Of Home Ranges And Habitat Use By Female Elk (Cervus Elaphus) In Northwestern Minnesota, Alicia E. Freeman
Annual And Seasonal Measurements Of Home Ranges And Habitat Use By Female Elk (Cervus Elaphus) In Northwestern Minnesota, Alicia E. Freeman
All Graduate Theses, Dissertations, and Other Capstone Projects
Elk were present historically in Minnesota’s prairies and forest transition zone up until their extirpation from the state in the late 1800s (Hazard 1982, Minnesota Department of Natural Resources [MNDNR] 2017). Settlers moving into the region converted much of the land for agricultural purposes, significantly reducing the amount of habitat available for elk, and ultimately leading to their extirpation in the early 1900s. Elk returned to the state in the 1930s through a reintroduction effort, as well as through natural dispersal from North Dakota USA, and Manitoba Canada in the 1980s (MNDNR 2017). In 2016, the Minnesota Department of Natural …
Effects Of Energy Development On Movements, Home Ranges, And Resource Selection Of White-Tailed Deer In The Western Dakotas, Bailey S. Gullikson
Effects Of Energy Development On Movements, Home Ranges, And Resource Selection Of White-Tailed Deer In The Western Dakotas, Bailey S. Gullikson
Electronic Theses and Dissertations
Oil and natural gas development has increased in recent years and research is needed to assess potential impacts on white-tailed deer (Odocoileus virginianus) populations. Our objectives were to document movements, home ranges, and resource selection of female white-tailed deer in response to energy development in the western Dakotas. Our study areas included Dunn County, North Dakota, an area with current oil and gas development, and Grant County, North Dakota, and Perkins County, South Dakota, areas without current oil and gas development. We captured and fitted 150 female deer with Very High Frequency (VHF) collars across study sites, and …