Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Salamander populations"”.
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Genetic Structure of Yonahlossee Salamander Populations.
… is the largest eastern Plethodontid salamander. It has been classified as a species of greatest conservation need by the Tennessee Wildlife Resources Agency (TWRA). Found only in mountainous areas along the borders of Tennessee, North Carolina, and Virginia, populations of the …
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RESISTANCE AND RESILIENCE OF STREAM SALAMANDER POPULATIONS TO DISTURBANCE
… of small, first-order streams. Stream salamanders (Family Plethodontidae) represent the dominant vertebrate group and play important ecological roles in first-order streams, although they have often been neglected in previous studies on the effects of disturbance on system ecosystems. …
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Effects of Forest Regeneration Methods on Salamander Populations in Central Appalachia
In forested ecosystems, salamanders occupy important ecological roles as predator, prey and as potential regulators of ecological processes. The effects of forest management, particularly clearcut harvesting, on salamanders have been well documented; removal of overstory trees negatively affects …
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Temporal changes in unisexual and sexual Ambystoma salamander populations in southeast Michigan
… Unisexual (all female) <em>Ambystoma</em> salamanders reproduce via kleptogenesis, resulting in ploidy-variable offspring. I analyzed genetic data of historic and modern-day unisexual and <em>A. laterale</em> samples from the University of Michigan’s E. S. George Reserve using epidermal …
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Effects of riparian buffer width on stream salamander populations in the southern Appalachian Mountains
Salamanders in the Appalachian region have been extensively studied, but the majority of research assessing the impacts of logging has focused on terrestrial species that are not dependent on stream habitats for egg deposition or larval development. I have collected data on both larval and adult …
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Land Usage Impacts on Springhead Salamander Populations, at Callaway Extended Properties, Harris County, Georgia
… studies have indicated that anrphibian populations appear to be declining in many areas of the world or exhibiting local population fluctuations. Some of the reasons given for this population decline are associated with land usage, and the negative biological impacts of many forms of …
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The Effects of Prescribed Fire on Millipede and Salamander Populations in a Southern Appalachian Deciduous Forest.
… the effects of prescribed fire on millipede and salamander populations. Seventeen sites within the Cherokee National Forest in east Tennessee that were treated once with prescribed fire between 1998 and 2002 were examined in the spring of 2002. Each burned plot was paired with an adjacent …
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The influence of silvicultural manipulations on plethodontid salamanders
… on how methods of forest management impact salamanders. In this research, I examine how experimental silviculture impacts plethodontid salamander relative abundance and count, and I compare three different body condition indices. Chapter 1 focuses on plethodontid salamander relative …
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Effects of Timber Harvesting on Terrestrial Salamander Abundance and Behavior
… of 7 silvicultural treatments on terrestrial salamander populations at 4 sites in southwest Virginia and West Virginia. The 3 silvicultural treatments with the most canopy removal (4-7 m2 basal area Shelterwood, Leavetree, Clearcut) had significantly fewer salamanders than the control (p < …
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Population Dynamics of Ouachita Dusky Salamanders (Desmognathus brimleyorum) in a Managed Forest Landscape
… of biodiversity on managed landscapes. Salamander populations can play key roles in the function and diversity of temperate forest ecosystems. Several studies have reported negative effects of forestry on terrestrial plethodontid salamanders, but less research has focused on …
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Interacting effects of temperature and food on early growth of two plethodontid salamanders
… of young-of-the-year and juvenile plethodontid salamanders with different life cycles, Plethodon cinereus (direct development) and Eurycea cirrigera (metamorphosis). Specifically, I was interested in examining the response of growth trajectories to different temperatures and food availability. I …
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Salamander Mating Behaviors and Their Consequences for Individuals and Populations
… studies in a little studied species, the marbled salamander (Ambystoma opacum). I studied female mating behavior, sexual selection, and the consequences of polyandry for individual females and salamander populations. I also compared the performance of several statistical approaches for analyzing …
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Where the Zigzags go: a microhabitat analysis for the Plethodon dorsalis complex within the Tennessee River gorge
… high-biomass animals such as the Northern Zigzag salamander (Plethodon dorsalis) are known contributors to essential nutrient cycles within their respective habitats. Knowing that these sensitive creatures serve as bioindicators for the overall health and quality of many ecosystems, we should aim …
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Amphibian and reptile conservation in a changing environment: Case studies from the southeastern United States
… on two species, the Reticulated Flatwoods Salamander (Ambystoma bishopi) and the Eastern Indigo Snake (Drymarchon couperi) both of which are listed on the U.S. Endangered Species List. Chapter 1 used Light Detection and Ranging (LiDAR) data to measure wetland bathymetry (basin shape) in …