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 98 for “"human impacts"”.
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A DYNAMIC LANDSCAPE OF FEAR: HUMAN IMPACTS ON CARNIVORE COMMUNITIES
… many carnivore species are experiencing rapid human-mediated population declines due to landscape change and habitat disturbance. For researchers, carnivores present unique challenges due to their large home ranges, low population densities, sensitivity to human disturbance, and direct …
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Better understanding human impacts on river thermal regimes under climate change
Human activities, especially dam construction, greatly modify the response of river thermal regimes to climate change. Dams impound large water bodies, decrease surface to volume ratios, and increase water residence times. All of these changes affect the interaction between surface meteorology and …
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Human Impacts on Fire in De Soto National Forest, Mississippi, U.S.A.
<p>Fire is a common occurrence in the longleaf pine (<em>Pinus palustris</em>) forests of the Southeast United States. Prescribed fire is used to manage these threatened ecosystems, but information regarding historical fire activity is unknown. My goals were to determine the historical fire regimes …
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Human impacts on ecosystems in the Chibefwe river catchment area in Mkushi district, Zambia
… main objective of the study was to assess the impacts of anthropogenic land use activities on river health conditions using aquatic macroinvertebrates as indicators of water quality in the Chibefwe River Catchment area in Mkushi district, Central Province, Zambia. Three study sites were …
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Human impacts on ecosystems in the Chibefwe river catchment area in Mkushi district, Zambia
… main objective of the study was to assess the impacts of anthropogenic land use activities on river health conditions using aquatic macroinvertebrates as indicators of water quality in the Chibefwe River Catchment area in Mkushi district, Central Province, Zambia. Three study sites were …
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Assessing cumulative human impacts on northern woodland caribou with traditional ecological knowledge and resource selection functions
… across Canada because of the cumulative impacts of human infrastructure development. The Atlin northern mountain herd, in the territory of the Taku River Tlingit First Nation (TRTFN), British Columbia, is less affected by development than southern herds. However, recent low productivity …
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Assessing cumulative human impacts on northern woodland caribou with traditional ecological knowledge and resource selection functions
… across Canada because of the cumulative impacts of human infrastructure development. The Atlin northern mountain herd, in the territory of the Taku River Tlingit First Nation (TRTFN), British Columbia, is less affected by development than southern herds. However, recent low productivity …
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A multiscale analysis and quantification of human impacts on Sumatran tiger (Panthera tigris sumatrae) habitat in Riau, Sumatra
… at preventing deforestation. Next, I examine human impacts within Tesso Nilo specifically, due to its suitability for oil palm and its potential as a stepping stone for wildlife movement from the western, mountains to the eastern peatlands of Sumatra. Finally, I examine impacts of human …
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Marine Reserves Promote Coral Reef Resilience by Mitigating Human Impacts Through the Restoration of Parrotfish Populations, Increasing Their Reproductive Output and Seeding Neighboring Overfished Reefs
… the ability of marine reserves to mitigate human impacts, restore herbivorous fish populations and seed nearby reefs is still poorly known.</p> <p>The study location was within the central Philippines wherein 58 reefs (30 marine reserves and 28 sites open to fishing) were surveyed and …
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Mitigation Strategies for Developed Areas of Galveston Bay
… that much of this loss can be attributed to human impacts from development (Salveson, 1990). Of the human impacts affecting wetlands, dredging and dredge-related activities are perhaps the most significant (Salveson, 1990). This study analyzes and evaluates mitigation strategies for managing …
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Hydrogeo-Eco-Systems in Aquaba/Jordan - Coasts and Region
… with the aquifer’s flow amounts, where human impacts in terms of over-pumping allowed more encroachment of seawater into land, and unintended recharge which led to seaward interface migration. A groundwater balance and solute transport were approached by developing a flow model from the …
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Characterization of Natural and Anthropogenic Seabed Features in the Southwestern Baltic Sea
The marine environment faces threats from human activities that can disturb the seabed and may threaten the proper functioning of marine ecosystems. A sustainable balance between human uses and seabed integrity requires knowledge of the seabed's physical characteristics, benthic habitat …
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Distribution and community structure of Chaetodontidae (Perciformes) in iSimangaliso Wetland Park with the view to applying the Butterflyfish Indicator Hypothesis in this region of South Africa
… globally in a vulnerable state, because of both human impacts and environmental alterations. An understanding of coral reef ecosystems and the ability to detect changes in the reef environment early on are necessary to apply effective conservation. The co-evolution of coral and coral feeding …
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Spectral Mixture Analysis for Monitoring and Mapping Desertification Processes in Semi-arid Areas in North Kordofan State, Sudan
… observation was adopted to verfiy the role of human impacts in the temporal changes in the study area. The findings of the study proved the powerfull of remotely sensed data in monitoring and mapping the desertification processes and come out with valuable recommendations which could contribute …
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Density, Shell Use and Species Composition of Juvenile Fiddler Crabs (Uca Spp.) at Low and High Impact Salt Marshes on Georgia Barrier Islands
… often coming in the form of dense vegetation. Human impacts have led to a 67% loss of coastal wetlands worldwide in the past 300 years, thus decreasing available refuges. There are no studies that show what affect this has on fiddler crabs (Uca spp.), a key species in salt marsh habitats. The …
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Assessing Landscape Change in Western Honduras, 1957-2010
<p>Human impacts on environmental conditions have long concerned researchers investigating changing forest conditions in the world's tropical regions. This thesis uses repeat photography, satellite imagery, and quantitative spatial statistics to evaluate landscape change in western Honduras between …
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The application of spatial capture-recapture models to investigate leopard ecology and conservation in South Africa
… characteristics of protected areas matter, human impacts around and within protected areas are the primary drivers of variation in leopard density. Based on these analyses, I conclude that South African protected areas are not conferring sufficient protection to leopard populations and that …
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Perspectives on Antarctic conservation: an analysis of New Zealand Antarctic stakeholder views
… utilisation of natural resources, increased human visitation and growing science-related activities in the area that are placing pressure on Antarctica’s unique ecosystems and biodiversity. In an effort to understand stakeholder perspectives from one of the states involved its governance, …
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