I examined the effects of potential predators in relation to habitat selection in Peromyscus leucopus. I also examined habitat selection in three other sympatric species (Blarina brevicauda, Blarina carolinensis, Sorex longirostris). I utilized data fiom 49 sampling sites on National Park Service land; Petersburg National Battlefield Eastern Front Unit (15), Five-Forks Unit (17), Appomattox Court House National Historical Park (15) and Booker T. Washington National Monument (12). Sites were categorized by location (park unit) and habitat type (i.e. bottom-land hardwood), and the microhabitat within each sampling site was characterized by four variables (% cover of grasses, herbs, shrubs, and volume of downed wood). Importance values of tree species within each sampling site were also measured. Peromyscus leucopus, B. brevicauda, B. carolinensis, and S. longirostris were captured in all habitat types. Low capture rates for shrew species and high variability in the abundance of shrew species among all sampling sites were likely responsible for the lack of differences in abundance among habitats (p > 0.05). Peromyscus leucopus represented 76% of the captures among prey species and was the only species to demonstrate differences in relative abundance among habitat types. The relative abundance of P. leucopus was higher in bottom-land hardwood habitat when compared to pine forest plantation habitat (ANOVA, p P. leucopus among these habitat types may be explained by differences in understory structural diversity. Furthermore, the corresponding increase in the relative abundance of Procyon lotor (the most abundant predator during the study) in structurally heterogeneous habitat (bottom-land hardwood) suggests the importance of anti-predator behaviors within these habitat types. Ultimately, this may suggest that prey cannot escape the presence or calculate the abundance of predators and instead simply avoid dangerous habitats. Although the relative abundance of the most abundant predator (P. lotor) and prey (P. leucopus) species were positively associated within certain habitat types, a negative association between predator and prey species abundance was evident within parks. In the Eastern Front unit the relative abundance of prey (P. leucopus, S. longirostris) was lower in comparison to the Five-Forks unit while the abundance of P. lotor was higher (ANOVA, p P. lotor, Didelphis virginiana, and Urocyon cinereoargenteus were higher in the Eastern Front unit when compared to the Five-Forks unit. It appeared that the lethal effects of predators are evident at larger scales (within parks) despite the anti-predator behaviors of prey at smaller scales (within microhabitats). My results indicate that at larger scales (within parks) the lethal effects (removal of prey) of abundant predators may overwhelm the non-lethal effects (anti-predator behavior) exhibited by prey at smaller scales, especially in areas where structurally heterogenous habitats are lacking.

The word revise means to reconsider or modify as with text. If we think of the suburban landscape as a text, the culture of each era left documentation of their values, policies and way of life in the form of transportation networks and other infrastructure, such as Main Streets, squares and public buildings. While evidence of most of the everyday life of individuals of every era gets erased by the following era, infrastructure investments of each era are adaptively reused and remain to tell the story. This thesis documents the adaptive reuse of these suburban frameworks and develops a proposition for the appropriate next layer to accommodate a new culture of inhabitants. Focusing on second generation suburbs, using Gwinnett County as a case study, this analysis identifies three problems of the current suburban situation: the problem of abandoned strips, a demographic shift, and the need for place. As new strip highways develop, old strips decline leaving abandoned shopping centers and declining property values. New development continues to move north and out of the county, and middle class residents, for which existing auto-oriented suburbs were created, move as well. A new, poorer, and more ethnically diverse population inherits the auto-oriented landscape left behind. This phenomenon is particularly concentrated along the southern portion of the Buford Highway corridor. Those with more money move closer to new development, while those with less money have less choice and are found near declining strips with fewer services, poorer quality housing and lower quality of life. Finally, county officials have expressed a desire for defining "the epicenter of Gwinnett." I believe that there is no one "center" of Gwinnett, but a series of places defined by memory, design or events. I propose to improve the situation of these three problems with a light rail line that connects existing places and creates new walkable, livable places to improve quality of life. This connective piece will serve as a social condenser in lieu of a center, provide links between polar populations, and reactivate declining strips while creating a sustainable infrastructural spine for future growth in the region.

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