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 20 of 177 for “"Habitat quality"”.
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Assessing Habitat Quality for the Endangered Red-cockaded Woodpcker
… revised U.S. Fish and Wildlife Service Foraging Habitat Guidelines depict good quality habitat for the red-cockaded woodpecker (Picoides borealis) at Camp Lejeune, NC. To accomplish this, I used multiple linear and logistic regression to examine the relationships between fitness, habitat use, …
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Effects of Habitat Quality on Reproduction in Two Georgia Populations of Gopherus Polyphemus
… investment by examining variation in the habitat structure and reproductive parameters for two populations of Gopherus polyphemus in Southeast GA. Both habitat structure and reproductive parameters for these populations are known from a previous study, thus this study expands upon the …
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The impact of habitat quality on female red colobus monkey (Procolobus rufomitratus) reproduction
This study examines the relationship between habitat quality and reproduction in female red colobus monkeys in Kibale National Park, Uganda. Because energetic constraints impact reproductive function in female primates, this dissertation includes data on feeding ecology, activity budgets, mating …
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Modeling white-tailed deer habitat quality and vegetation response to succession and management
A habitat suitability index (HSI) model for white-tailed deer (Odocoileus virginianus) was tested to determine the relationship between habitat quality predicted by the model and habitat quality suggested by the condition of 1.5 year-old bucks on Quantico Marine Corps Base, Virginia. Additionally, …
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Local and Regional Aspects of Habitat Quality Jointly Affect the Biodiversity of Ephemeral Ponds
… communities is likely affected by both local habitat quality and by the quality of the landscape surrounding the locality. In pond environments, habitat quality may be affected by the kind of leaf litter present because leaf species differ in the kind of habitat structure they provide and the …
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An assessment of the nutritional status and habitat quality of a southwestern Virginia deer herd
… and nutritional status of the deer herd and the habitat quality of the HK area were studied relative to a deer herd and an area in the Stony Creek (SC) section of Giles County, Virginia, known to produce deer of good physical size and antler development and sustained high hunter harvests. …
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Influence of nature preserves on macroinvertebrate assemblages, water quality, and habitat quality along two urban streams
… techniques, such as riparian re-planting and habitat enhancement, are often met with little improvement in stream biodiversity. The understanding of the ecological effect of nature preserves in urban areas on stream assemblages can lead to more effective stream restoration. Benthic …
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Understanding key factors influencing habitat quality for the endangered fountain darter (Etheostoma fonticola) in the Comal River.
The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient …
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Using the Index of Biotic Integrity of Fish Communities to Evaluate Habitat Quality in Middle Chattahoochee River Tributaries
… varying degrees of anthropogenic impact on habitat quality.' Samples were taken twice per year during Spring and Fall over a time span of two years in order to obtain representative samples during periods of normal and low seasonal flow, respectively. Samples were obtained using backpack and …
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Should I Stay or Should I Go? The Influence of Habitat Quality on Movement Patterns in Northern Crayfish (Orconectes virilis)
… that population densities have tracked resource quality. Various models have been proposed to account for such “resource matching.” For example, the Ideal Free Distribution (Fretwell and Lucas 1970) model employs habitat selection rules which assume mobile animals evaluate available habitat …
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The Importance of Thermal Habitat Quality for Pumpkinseed (Centrarchidae: Lepomis gibbosus) in Small and Constructed Coastal Embayments Along the Northwest Shoreline of Lake Ontario
… or modified to restore warmwater fish habitat. I describe how Lake Ontario (hereafter the Lake) alters the thermal regime of these small coastal embayments, how the altered thermal regimes affect growth and survival of age-0 warmwater fishes, and how the thermal habitat quality for such …
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Ecology of greater gliders, Petauroides Volans Kerr 1792, in relation to variations in habitat quality in eucalypt forests in south-east New South Wales
… B and C which appeared to be the only favourable habitats within the site. The population density of P. volans did not appear to be related to forest site productivity. Based on the entire area of the site, the number of resident adult P. volans per hectare was 0.18 at Morton; but on the basis of …
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Ecology of greater gliders, Petauroides Volans Kerr 1792, in relation to variations in habitat quality in eucalypt forests in south-east New South Wales
… B and C which appeared to be the only favourable habitats within the site. The population density of P. volans did not appear to be related to forest site productivity. Based on the entire area of the site, the number of resident adult P. volans per hectare was 0.18 at Morton; but on the basis of …
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Nutritional condition and stress response of fishes along a gradient of habitat quality in the St. Lawrence River: physiological consequences of anthropogenic habitat degradation
Anthropogenic alterations to terrestrial habitat (e.g., urbanization, deforestation, agriculture) can have a variety of negative effects on riverine systems that flow through disturbed landscapes. These in-stream changes can alter aquatic population size and community structure; however, the …
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THE EFFECTIVENESS OF TROUT HABITAT RESTORATION IN EUSTACHE CREEK, A FORMERLY PLACER-MINED STREAM IN WESTERN MONTANA
… Environmental Studies The Effectiveness of Trout Habitat Restoration in Eustache Creek, a Formerly Placer-Mined Stream in Western Montana Committee Chair: Dr. Daniel Spencer Aquatic ecosystems in the western U.S. have been severely degraded over the last century by anthropogenic activities such as …
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THE EFFECTIVENESS OF TROUT HABITAT RESTORATION IN EUSTACHE CREEK, A FORMERLY PLACER-MINED STREAM IN WESTERN MONTANA
… Environmental Studies The Effectiveness of Trout Habitat Restoration in Eustache Creek, a Formerly Placer-Mined Stream in Western Montana Committee Chair: Dr. Daniel Spencer Aquatic ecosystems in the western U.S. have been severely degraded over the last century by anthropogenic activities such as …
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Storage effects: the relationship between the hydrological dynamics of small infield pools and plant functional groups
Small infield pools are important habitats. But, the properties that make them attractive for several wetland species as well as the traits which allow species to survive in such high dynamical systems are largely unknown. I investigated the habitat quality with a time series model which requires …
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A Gis-Based Habitat Model Predicting Elk Nutritional Condition in the Pacific Northwest
"Declining habitat quality has been implicated in population declines in elk (Cervus elaphus) in the Pacific Northwest (PNW) although specific causes are unknown. Nutrition and summer-autumn body condition (percent body fat) have been linked to virtually every aspect of successful ungulate …
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Spatial and temporal genetic variation in small and declining populations of Atlantic salmon
… The research investigated population size, habitat quality, population structure and stability over time using Atlantic salmon parr in the River Frome (a chalk stream in Dorset, England) surveyed at 15 sites, in summer and autumn over three consecutive years. The hypotheses were:* Abundance …
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