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Full-Text Articles in Life Sciences
Individual And Population Responses To Hydrologic Variability In A Headwater Stream Salamander, Madaline Cochrane
Individual And Population Responses To Hydrologic Variability In A Headwater Stream Salamander, Madaline Cochrane
Graduate Student Theses, Dissertations, & Professional Papers
Understanding how organisms respond to environmental variability is a central goal in ecology – a goal made even more pressing by the herculean challenge global climate change presents to all organisms. Climate change is increasing the frequency and intensity of floods and droughts, which will likely have disproportionate effects on freshwater organisms. Many stream-associated species have multi-stage life histories. However, we lack an empirical understanding of life history and movement responses of these organisms to hydrologic disturbances, and how these responses may influence demographic rates. In my dissertation, I used a combination of growth, developmental, movement, and demographic data to …
Survival, Movements, And Resource Selection Of Female White-Tailed Deer In Missouri, Chloe A. Wright
Survival, Movements, And Resource Selection Of Female White-Tailed Deer In Missouri, Chloe A. Wright
Graduate Student Theses, Dissertations, & Professional Papers
White-tailed deer (Odocoileus virginianus) in Missouri are a socially and economically important game species generating annual revenue in excess of $1 billion. The last comprehensive deer study in Missouri was conducted in the 1980s – 1990s when deer populations were rapidly expanding. Since this time there has been a reduction in deer population size, declining growth rates, changes in harvest strategies, and the emergence and spread of chronic wasting disease (CWD). These changes have rendered prior survival estimates outdated, and the presence of CWD requires a deeper understanding of movement patterns and space use. We were interested in …
Generating Best Management Practices For Avian Conservation In A Land-Sparing Agriculture System, And The Habitat-Specific Survival Of A Priority Migrant, Jeffrey D. Ritterson
Generating Best Management Practices For Avian Conservation In A Land-Sparing Agriculture System, And The Habitat-Specific Survival Of A Priority Migrant, Jeffrey D. Ritterson
Masters Theses
A large amount of the world’s biodiversity is located in a disproportionately small amount of area, namely the tropics. Many of these areas are experiencing rapid landscape changes, mainly in the form of deforestation for agricultural practices. Current conservation efforts are focused on agricultural areas and their ability to provide habitat. The conservation value of a novel land-sparing agroforestry system, known as Integrated Open Canopy (IOC), was recently demonstrated on the study site when applied to coffee. IOC coffee supports forest species that are uncommon or absent in shade grown coffee. I generated best management practices for IOC farms relative …
Movement, Habitat Selection, And Survival Of Female Wood Ducks (Aix Sponsa) And Ducklings At Long Point, Ontario., Matthew E. Dyson
Movement, Habitat Selection, And Survival Of Female Wood Ducks (Aix Sponsa) And Ducklings At Long Point, Ontario., Matthew E. Dyson
Electronic Thesis and Dissertation Repository
Nest box programs provide additional nesting opportunities for wood ducks throughout their breeding range. The purpose of my research was to understand habitat use and survival of wood ducks produced from nest boxes during the brood-rearing period. I used radio-telemetry to monitor female wood ducks and ducklings to 30 days post-hatch. Females showed the greatest selection for swamp, scrub-shrub, and emergent marsh habitats, and used emergent marsh most. Female survival was high (0.90, 95% CI = 0.81 – 1.0). Conversely, brood survival (0.47, 95% CI = 0.33 - 0.69) and duckling survival (0.18, 95% CI = 0.14 – 0.22) were …