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The role of terrrestrial habitat in the population dynamics and conservation of pond-breeding amphibians
(University of Missouri--Columbia, 2007)
to determine microclimate and thereby influence amphibian survival. Returning to the model building process, I used the results of my field experiments to develop a demographic model designed to evaluate the potential effects of forestry practices on wood frog...
Effects of riparian buffer width on stream salamander populations in the southern Appalachian Mountains
(University of Missouri--Columbia, 2008)
salamanders were significantly less abundant. It is unlikely that salamanders will persist or thrive for more than a season or two in logged forests due to a significant deterioration in body condition of Ocoee salamanders in logged riparian areas. My results...
Behavioral choice and demographic consequences of wood frog habitat selection in response to land use
(University of Missouri--Columbia, 2007)
Land use is a pervasive form of disturbance affecting natural systems on Earth. My dissertation research is set within the context of a large scale project referred to as Land-use Effects on Amphibian Populations (LEAP), where researchers in Maine...
Beyond the edge : riparian habitat use and forest management effects on stream salamanders in the southern Appalachian mountains
(University of Missouri--Columbia, 2007)
on the effects of logging on amphibians that require streams for reproduction. In order to mitigate the impacts of habitat alteration on stream amphibians, it is necessary to have a clear understanding of the role abiotic and biotic factors play in determining...
Conservation and ecology of breeding landbirds in a riparian restoration context
(University of Missouri--Columbia, 2006)
of floodplain forest restoration on a large, regulated river in an agricultural valley. I used infrared, time-lapse video to identify agriculture-associated nest predators as a primary source of nest mortality in the Sacramento River Valley, California. Then...
Multi-scale investigations of gray treefrong movements: patterns of migration, dispersal, and gene flow
(University of Missouri--Columbia, 2005)
The movement of individuals within and among populations has been recognized as an important determinant of the persistence of species. Fragmentation of terrestrial landscapes has exacerbated the need to understand the ...
Mechanisms of call recognition in three sympatric species of Neoconocephalus (Orthoptera: Tettigoniidae) : asymmetrical interactions and evolutionary implications
(University of Missouri--Columbia, 2006)
character displacement. Empirical studies of reproductive character displacement often report that the interactions between species are asymmetrical, such that one species shows the expected pattern of displacement while the other does not. This may be a...
Behavioral endocrinology of female gray treefrogs, Hyla versicolor, in response to acoustic stimulation
(University of Missouri--Columbia, 2008)
Particularly in organisms with a limited breeding period, females must rely on both external and physiological cues to regulate the phenology of reproduction and behavior. I investigated the relationship between male acoustic signals...