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.
Results
Showing 1 to 20 of 265 for “"habitat loss"”.
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Designing against habitat loss: Facilitating movement of the Louisiana black bear
… to ecosystem deterioration and biodiversity loss. This combination of factors is particularly relevant in the South-Central United States, where fertile soils have made cropland (namely soybean, corn, and cotton fields) a significant portion of the landscape, and rising temperatures and sea …
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Theoretical Impacts of Habitat Loss and Generalist Predation on Predator-Prey Cycles
… southern ranges. Generalist predation and habitat loss have been identified as two features of southern habitats that may contribute to the attenuation of cycles in southern latitudes. I used a reaction-diffusion-advection framework to investigate the relative and combined damping impacts …
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The Role of Breeding Habitat Loss in the Decline of Eastern Whip-Poor-Will (Antrostomus Vociferus) Populations in Canada
… since at least the late 1960s, and breeding habitat loss is thought to be a primary cause. Here we test this hypothesis using data from the North American Breeding Bird Survey — the same data that were used to document long-term Whip-poor-will population declines in Canada. If breeding …
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INVESTIGATION INTO THE INDIVIDUAL AND COMBINED IMPACTS OF WILDLIFE TRADE AND HABITAT LOSS ON BIODIVERSITY AND CONSERVATION INTERVENTIONS INTHE TROPICS
… and biodiversity decline, wildlife trade and habitat loss. My first data chapter explores how socio-economic factors undermine protected areas by studying the spatial occurrence of protected area downgrading, downsizing and degazettement. Next, I apply a gravity-underreporting framework to …
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A Global GIS Analysis of Primate Diversity and Biogeography: Assessing Trends in Habitat Loss and Extinction Risk to Inform Primate Conservation
… rainforests in particular. Tropical tree cover loss is therefore central to the biodiversity crisis, and unfortunately it is continuing at alarming rates and showing no signs of slowing. This forest loss severely impacts primates, which are one of the most diverse and threatened species groups …
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Relative Effects of Landscape Structure Variables, and Interactions with Life-History Traits, on the Abundance and Distribution of Wetland-Dependent Vertebrate Species
… population declines worldwide primarily due to habitat loss, but are a relatively understudied ecological group in landscape ecology. The overarching goal of my dissertation is to advance our understanding of the effects of landscape structure on wetland-dependent vertebrate populations and the …
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The demography of Red Sea reef fishes since the Last Glacial Maximum
… not know how coral reef fish species respond to habitat loss on temporal and spatial scales relevant to climate change. The Red Sea represents an ideal model system to address this given that many reef fish populations persisted during the Last Glacial Maximum despite a significant loss of coral …
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Demographic processes determining the range dynamics of plant species, and their consequences for biodiversity maintenance in the face of environmental change
… harvesting and environmental threats like habitat loss and climate change. The general introduction of this thesis presents shortly the available models for species distribution modelling. Subsequently, it presents the feasibility of process-based modelling. Finally, it introduces the study …
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Landscape patterns and patch dynamics in Hamilton county over a forty year period: applicability to the conservation of the eastern box turtle
… in the southeastern US and the primary driver of habitat and biodiversity loss. Species with long generation times such as the eastern box turtle (Terrapene carolina carolina) can persist in an urbanizing environment but have higher mortality than in forested habitat and show a response lag which …
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Habitat connectivity and spotted owl population dynamics
The ecological consequences of habitat fragmentation include the direct effects of habitat loss and the indirect effects of reduced inter-patch dispersal. I examine these consequences of habitat fragmentation through two separate studies. The first study measures habitat connectivity through the …
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Modelling the structuring of animal communities in heterogeneous landscapes : the role of individual home range formation, foraging movement, competition and habitat configuration
… understand their response to landscape changes (habitat loss and fragmentation).
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Extensive green roof design in the City of Cape Town : barriers and opportunities for developing a green industry
… of direct human disturbance from development, habitat loss and fragmentation and the increasing frequencies of extreme weather events, it is critical that building practices in the next decade adopt a more adaptive and holistic approach to building design.
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Impacts of Exotic Invasive Vines on the Ecology and Reproduction of the Endangered Trillium Reliquum
… counties in three states that is imperilled by habitat loss and encroachment from the exotic invasive vines, kudzu (Pueraria montana Ohwi) and Japanese honeysuckle (Lonicera japonica Thunb.) My study examines the impact of kudzu and honeysuckle on native plant communities, T. reliquum population …
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A Spatial Analysis of the Impact of Development on Wetland Habitat in Mount Pleasant, South Carolina
In response to growing concerns over wetland habitat loss and the associated impact on water resources, federal and state legislation has been enacted to protect vulnerable wetland habitats from the impacts of humans. In order to examine the efficacy of current coastal resource policy and its …
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Sex-specific Habitat Use and Responses to Fragmentation in an Endemic Chameleon Fauna
… collection for the international pet trade and habitat loss and fragmentation. A recent field study reports a highly female-biased sex ratio in the Eastern Arc Endemic Usambara three horned chameleon, Trioceros deremensis, a large, sexually dimorphic species. This species is collected for the …
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Collaborative Conservation of Taimen (Hucho taimen)Through Education and Awareness Khovsgol Aimag Mongolia
… aimag) are threatened by illegal poaching, habitat loss, mining and recreational fishing. Taimen are the world’s largest salmonid, historically reaching lengths of 6.5 ft. and weighing as much as 200 lbs This unique species of fish is incredibly slow-growing, long-lived (up to 40 years) and …
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Collaborative Conservation of Taimen (Hucho taimen)Through Education and Awareness Khovsgol Aimag Mongolia
… aimag) are threatened by illegal poaching, habitat loss, mining and recreational fishing. Taimen are the world’s largest salmonid, historically reaching lengths of 6.5 ft. and weighing as much as 200 lbs This unique species of fish is incredibly slow-growing, long-lived (up to 40 years) and …
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Modelling spatial turnover patterns in tree species diversity for conservation
… of rapid environmental change. Biodiversity loss led by expanding anthropogenic activity, combined with the effects of changing climatic regimes, pose a threat to natural communities and the ecosystem services that they underpin. Understanding how communities of species vary across space and …
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