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Articles 1 - 4 of 4
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Habitat Associations Of Stream-Dwelling Salamanders At Multiple Spatial Scales In Central Kentucky Headwaters., John Mark Yeiser
Habitat Associations Of Stream-Dwelling Salamanders At Multiple Spatial Scales In Central Kentucky Headwaters., John Mark Yeiser
Online Theses and Dissertations
Headwater stream systems are productive habitats that are often at risk of human perturbation, and it is crucial that ecologists understand natural patterns and processes within these ecosystems. Using a multi-scale approach, I investigated factors influencing habitat associations of Ambystoma barbouri (streamside salamander) and Eurycea cirrigera (southern two-lined salamander) in a relatively undisturbed stream network in central Kentucky. I used likelihood ratio G-tests to identify associations between species and mesohabitat types (i.e., runs, riffles, and pools). I used second order Akaike's Information Criterion (AICc) model selection to predict patterns of presence and abundance throughout headwater reaches. Fine-scale abiotic …
Effects Of Thermal Acclimation On The Critical Thermal Maxima Of The Tropical Cockroaches: Blaptica Dubia, Eublaberus Posticus And Blaberus Discoidalis (Blaberidae), Lauren Michelle Goode
Effects Of Thermal Acclimation On The Critical Thermal Maxima Of The Tropical Cockroaches: Blaptica Dubia, Eublaberus Posticus And Blaberus Discoidalis (Blaberidae), Lauren Michelle Goode
Online Theses and Dissertations
The Critical Thermal Maxima (CTMax) is a measure of upper thermal tolerance. The physiological response upon reaching CTMax is similar across taxa, making CTMax useful in comparative studies. The CTMax defines the ecological lethal temperature of an organism and has been used to predict the effects of global climate change. CTMax was determined for adults and first instar nymphs of three species of tropical cockroaches: Blaptica dubia, Eublaberus posticus, and Blaberus discoidalis. Adult cockroaches were acclimated to temperatures of 10°C, 15°C, 20°C, 25°C, 31°C and 37°C for a period of seven days. Blaptica dubia was the only species to survive …
Winter Behavior And Ecology Of Eastern Bluebirds (Sialia Sialis): Home Ranges, Habitat Use, And Effect Of Weather On Foraging Behavior, Todd J. Weinkam
Winter Behavior And Ecology Of Eastern Bluebirds (Sialia Sialis): Home Ranges, Habitat Use, And Effect Of Weather On Foraging Behavior, Todd J. Weinkam
Online Theses and Dissertations
Eastern bluebirds (Sialia sialis) are widespread across eastern North America, but populations appear to be susceptible to extreme winter weather. Declines in population following cold winters in states like Kentucky suggest the need to better understand winter-specific habitat requirements and behavioral responses to inclement weather. My objectives were to 1) describe the size and habitat composition of the home ranges of wintering bluebirds, and 2) examine the effects of weather (i.e., temperature, wind speed, and snow presence) on habitat occupancy, group size, and foraging behavior. My study was conducted at the Blue Grass Army Depot in Madison County, …
Validation Of Kentucky Wetlands Rapid Assessment Method (Ky-Wram) Metrics Using Macroinvertebrate Communities Of Forested Depressional Wetlands, Britney Yvonne Garrison
Validation Of Kentucky Wetlands Rapid Assessment Method (Ky-Wram) Metrics Using Macroinvertebrate Communities Of Forested Depressional Wetlands, Britney Yvonne Garrison
Online Theses and Dissertations
The Kentucky Wetlands Rapid Assessment Method (KY-WRAM) is currently being developed by the collaborative efforts of the Kentucky Division of Water and Eastern Kentucky University as a tool to measure the function and condition of wetlands. To ensure the rapid assessment method properly evaluates wetland condition, the KY-WRAM needs to be validated by comparison to intensive biological data. This project initiated such a comparison using macroinvertebrate communities. Macroinvertebrates play a critical role in wetland ecosystem functioning, thus it is imperative to have an understanding of the macroinvertebrate community responses to degradation of wetlands. Whereas indices of wetland invertebrate communities have …