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 13 of 13 for “"plethodontid salamanders"”.
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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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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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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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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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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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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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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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Social behavior and kinship in the four-toed salamander, Hemidactylium scutatum
… the largest global decline in biodiversity. Many salamanders, 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 …
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Amphibian Population and Community Characteristics, Habitat Relationships, and First-Year Responses to Clearcutting in a Central Appalachian Industrial Forest
… object use/availability analyses, I discovered salamanders preferred rocks over woody debris, relative to the amount available of each. Salamanders preferred flat rocks to any other shape, flagstones to any other type of rock, and rock lengths in the 31-40 cm class. Preferred wood widths were in …
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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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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
… the most important habitat characteristics for salamanders. I counted salamanders in 240 10 x 10 m plots located in the MeadWestvaco Wildlife and Ecosystem Research Forest in north-central West Virginia. We also collected a variety of habitat data in these plots to predict salamander abundance …