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 17 of 17 for “"plethodontid"”.
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The influence of silvicultural manipulations on plethodontid salamanders
… 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 abundance 30 years after experimental treatments (including clearcut and shelterwood …
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Interacting effects of temperature and food on early growth of two plethodontid salamanders
… the growth 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 …
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Assemblages of salamanders (Family Plethodontidae) in CWA 305(b) fully-supporting, partially-supporting, and non-supporting streams on Walden's Ridge, Tennessee
… (AMD) has caused significant declines in plethodontid salamander communities in AMD affected streams. The Clean Water Act (CWA) requires that each navigable body of water in the United States be assigned a use designation and a support status based upon the stream's use designation and how …
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Incorporating microclimate into habitat suitability analysis for plethodonitd salamanders
… for predicting the metabolic rate of three plethodontid salamander species of varying sizes, sexes, and stage classes. Predictions of suitable climatic habitat, vapor pressure deficit, and salamander physiology were combined (performance component) at varying spatial scales and temporal …
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Variation in Salamander Life History and Community Composition Across an Urban Gradient in Atlanta, Georgia, USA
… and degree of urbanization; and 4) changes in plethodontid salamander species richness across an urban gradient, using environmental DNA. I found that 1) drainage basin area was a better predictor of stream temperature than impervious surface cover; 2) cooler August temperatures predicted a …
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Social behavior and kinship in the four-toed salamander, Hemidactylium scutatum
… especially North American members of the family Plethodontidae, are at risk of local extirpation because they persist in small, isolated populations due to specialized habitat requirements and limited dispersal ability. To effectively conserve and manage such species, factors influencing …
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Comparative Morphometrics of the Sacral Vertebra in <em>Aneides</em> (Caudata: Plethodontidae).
<p>The genus <em>Aneides</em> (Caudata: Plethodontidae) is an arboreal salamander with a prehensile tail and a distribution that spans North America. It is hypothesized that adaptations for arboreality will be visible in the osteology of the sacral vertebra either by qualitative analysis or linear …
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Food Habits, Growth, Conversion Efficiency and Response to Prey Odors of the Copperhead, Agkistrodon Contortrix
… small skinks, various small colubrid snakes, and plethodontid salamanders. Growth rate was similar for all snakes with average values of 2.6 mm/wk for adults and 2.1 mm/wk for juveniles. Rate of weight gain was strongly dependent on body weight with adults averaging 2.94 g/wk and juveniles 0.69 …
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Salamanders of the Mio-Pliocene Gray Fossil Site, Washington County, Tennessee.
… taxa from three modern families (Ambystomatidae, Plethodontidae, and Salamandridae) supporting the woodland-pond interpretation of the site. All specimens represent the earliest record of their respective families in the Appalachian Mountains; with the <em>Notophthalmus</em> sp. vertebrae being …
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Genetic Variation of the Grotto Salamander, Typhlotriton Spelaeus in Missouri
The Ozark Plateau is home to several species of plethodontid salamanders. A previous study has shown that members of a population of Typhlotriton spelaeus from Webster Co., Missouri show a high degree of genetic similarity with members of the genus Eurycea, particularly Eurycea tynerensis. In this …
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Genetic Structure of Yonahlossee Salamander Populations.
… yonahlossee</em> 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 …
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Phylogenetic Niche Modeling
… our model on a clade of eastern United States Plethodontid salamanders by accurately estimating species niche, even when no occurrence data is present. Our model demonstrates a novel framework where niche changes can be studied forwards and backwards through time to understand ancestral ranges, …
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Natural History and Conservation of Bolitoglossine Salamanders in Central Panama
… a decrease in surface activity of some tropical plethodontid species. Conservationists need to be aware of the effects of drought on surface activity of these species and understand that it likely will make monitoring and detection of population changes more difficult.</p>
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Population Dynamics of Ouachita Dusky Salamanders (Desmognathus brimleyorum) in a Managed Forest Landscape
… negative effects of forestry on terrestrial plethodontid salamanders, but less research has focused on stream-dwelling species, evaluated mechanisms driving observed shifts in abundance, or described the dynamics of populations residing in managed forests. Using a Before-After-Control-Impact …
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Amphibian Population and Community Characteristics, Habitat Relationships, and First-Year Responses to Clearcutting in a Central Appalachian Industrial Forest
The overall goal of this project was to provide baseline data on amphibian species richness, relative abundance, and habitat use for a long-term landscape ecology study on MeadWestvaco industrial forest in the Allegheny Highlands of West Virginia. From results of area-constrained daytime searches …
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Effects of Forest Regeneration Methods on Salamander Populations in Central Appalachia
… laboratory experiments to describe the role of plethodontid salamanders in ecosystem functions.
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Model Validation and Improvement Using New Data on Habitat Characteristics Important to Forest Salamanders, and Short-Term Effects of Forestry Practices on Salamander Movement and Population Estimates
Amphibians, because of their semi-permeable skin, sensitivity to changing microclimates, and important role in ecosystems, are often viewed as indicators of ecosystem health. They make excellent organisms for studies on the effects of silvicultural practices. My goal was to provide recommendations …