This dissertation research examined the causes and consequences of Neotropical migrant songbird distribution during the stationary portion of the non-breeding period. American redstarts (Setophaga ruticilla) are one of several species that exhibit...
Many organisms recognize and respond to categories: predator, prey, rival, or juvenile. Organisms recognize these ecologically-important categories by assessing diverse sensory stimuli. A primary focus of my research has been understanding how...
Black-throated blue warbler -- Habitat. Black-throated blue warbler -- Behavior. Black-throated blue warbler -- Food. Black-throated blue warbler -- Nests.
In this dissertation, I present an examination of the role of two biotic interactions in the population dynamics of Vibrio cholerae. Traits with a genetic basis such as size, physiological processes, stress tolerance, and even behavior, are key...
Black-throated blue warbler -- Fertility. ; Black-throated blue warbler -- Reproduction. ; Black-throated blue warbler -- Behavior. ; Black-throated blue warbler -- Food. ; Black-throated blue warbler -- New Hampshire -- West Thornton. ; Parental...
Populations are, by definition, a collection of individuals, so the mechanisms of population change often occur at the level of the individual. The goal of this research was to examine how variability in the behavior of individual females...
Black-throated blue warbler -- Reproduction. ; Black-throated blue warbler -- New Hampshire. ; Black-throated blue warbler -- Jamaica. ; Black-throated blue warbler -- Mortality -- Mathematical models. ; Climatic changes -- Environmental aspects --...
Understanding the processes that determine the abundance of migratory birds has been difficult because these species move between diverse locations on different continents. Furthermore, events during one stage of the annual cycle are likely to...
Within a species, the abundance of individuals varies in time and space. This dissertation research examines processes giving rise to patterns of spatial and temporal variation in the abundance of multiple species of forest-breeding migratory...
Identifying and understanding sources of individual variation in fecundity is of central importance to life history theory and population ecology. In this study, I first examined how factors on the breeding grounds in eastern Maryland affected the...
Rufous-crowned sparrow -- Effect of habitat modification on. ; Rufous-crowned sparrow -- California Southern. ; Fragmented landscapes -- California.
The Rufous-crowned Sparrow (Aimophila ruficeps ; RCSP) is a non-migratory, ground-nesting songbird that resides in southern California coastal sage scrub, which has been highly fragmented by urban development. RCSP's spatial pattern of abundance...
Tadpoles -- Ecology -- Atlantic States. ; Anura -- Evolution -- Atlantic States. ; Tadpoles. ; Bufonidae -- Atlantic States. ; Ranidae -- Atlantic States. ; Hylidae -- Atlantic States.
Understanding the distribution of species is a long-standing goal of ecology. Progress toward this understanding requires elucidation of how present-day patterns have been generated through history. Accomplishing this demands the study of...
Functional magnetic resonance imaging (fMRI) is an important tool for understanding neural mechanisms underlying human brain function. Most fMRI studies use limited sets of well-controlled stimuli to understand neural systems in isolation. The...