White-tailed deer (Odocoileus virginianus) in the Big Cypress Basin of South Florida must cope with top-down and bottom-up forces, including frequent pyrogenic and hydrological disturbances and the threat of predation. These forces affect their space use, behavior, and survival. Recent changes to the regional hydrology and increased abundances the Florida panther (Puma concolor coryi), their primary predator in this system, call for a renewed look at how these forces affect this deer herd. To assess the effects of these forces on seasonal space use, behavior, and survival of deer, I analyzed GPS telemetry and camera trap data, highlighting the factors influencing deer space use across hydrological and biological seasons, and connected behavioral data captured on camera traps to female deer survival. Space use is primarily a function of intrinsic sex affects and landscape composition and configuration, and varies as resources and reproductive cycles fluctuate across seasons. Disturbance has little effect on space use, suggesting deer are well adapted to these disturbance regimes. Temperament in foraging behavior in female deer impacted survival, influencing prey catchability and potentially buffering prey populations against cycles of predation. / Master of Science / White-tailed deer (Odocoileus virginianus) in the Big Cypress Basin of South Florida must cope with a changing landscape of resources caused by frequent fire and flooding, while avoiding predation by their primary predator in this system, the Florida panther (Puma concolor coryi). Recent changes to water flow across this landscape and increasing numbers of Florida panthers call for a renewed look at how disturbance, landscape features, and predation influence the seasonal space use, behavior, and survival of deer in this system. Differences from sex and landscape features most explain seasonal space use of deer, while the influence of fire and flooding is limited. Variability in vigilance of female deer led to differences in female survival, suggesting a tradeoff between acquiring resource and safety when foraging under predation risk.
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/108140 |
| Date | 13 August 2020 |
| Creators | Ellsworth, William Hunter |
| Contributors | Fish and Wildlife Conservation, Cherry, Michael J., Chandler, Richard B., Ford, W. Mark, Conner, Mike |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Detected Language | English |
| Type | Thesis |
| Format | ETD, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
Page generated in 0.0017 seconds