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 25 for “"Biodiversity Crisis"”.
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British botanic gardens and the biodiversity crisis, c.1960 – c.2000
… explores the integration of the idea of a biodiversity crisis into the research, governance, and outreach of four British botanic gardens: the Royal Botanic Gardens, Kew, the Royal Botanic Garden, Edinburgh, the University of Oxford Botanic Garden and Cambridge University Botanic Garden. …
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Biodiversity crisis and recovery during the Triassic-Jurassic greenhouse interval: testing ocean acidification hypotheses
The Late Rhaetian (Late Triassic) extinction event is characterised by shelled species showing a reduction in size, and thickness, which together with changed mineralogy is thought to be as a result of increased atmospheric pCO2 levels. Similar morphological changes have been demonstrated for …
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Prevalence assessment of the amphibian chytrid fungus Batrachochytrium dendrobatidis across two habitat types in East Tennessee
In light of the biodiversity crisis facing amphibian populations globally, studies investigating the pathogenic amphibian fungus Batrachochytrium dendrobatidis (Bd) are a foremost priority for biologists. Understanding effects of habitat variation on Bd prevalence is important for identifying …
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Local and landscape scale effects of fragmentation on aerial insectivorous bats in the Amazon
Deforestation is the main driver of the biodiversity crisis. Resulting landscapes are left fragmented with isolated remnant forest patches embedded in a human-modified matrix which has the propensity to regenerate into successional forest. The Biological Dynamics of Forest Fragments Project (BDFFP) …
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Morphometrics, molecular ecology and multivariate environmental niche define the evolutionary history of the Western Rattlesnake (Crotalus viridis) complex
Species are the currency of biodiversity and an accurate recognition of their status is a scientific necessity, particularly given the onset of the Anthropocene (the most recent biodiversity crisis). Yet, concept-based species approaches are contentious whereas those more deterministic work against …
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Species distribution, abundance and conservation in Nakai-nam Theun National Protected Area, Central-Eastern Laos: Implications for future local wildlife conservation project
Southeast Asia is experiencing unprecedented biodiversity declines brought about by human population growth and economic development leading to unsustainable use of natural resources and loss of natural habitat. The scientific community has emphasized this biodiversity crisis in the past decade, …
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Ecological, Social, And Educational Dimensions Of Restoration: Insights From Berenty Reserve, Madagascar
Amidst a global biodiversity crisis, ecological restoration emerges as a critical solution to mitigate the devastating effects of biodiversity loss and climate change. Focusing on Madagascar, a biodiversity hotspot facing significant forest loss, this dissertation explores various aspects of …
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Human-turtle interactions during freshwater recreational activities: Understanding risks and mitigation strategies
… provides valuable insights into the human-led biodiversity crisis, and directions for effective environmental and conservation. In this thesis, we use an interdisciplinary approach to understand human-turtle interactions during water-based recreational activities in the Rideau Canal Waterway, …
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Group density estimates for lar gibbons (Hylobates lar) and siamangs (Symphalangus syndactylus) and the quantitative analysis of the vegetative characteristics of the Sikundur field site.
… at the moment, this region is in the midst of a biodiversity crisis since it is experiencing a higher rate of forest loss than any other region. Indonesia has one of the highest deforestation rates globally, it experienced a total loss of 0.84 Mha of primary forest cover in 2012, with 51% of this …
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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
Biodiversity is crucial for the healthy functioning of ecosystems. Terrestrial biodiversity is disproportionately concentrated in the tropics, and tropical rainforests in particular. Tropical tree cover loss is therefore central to the biodiversity crisis, and unfortunately it is continuing at …
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Population dynamics of the Columbia spotted frog (Rana luteiventris): inference from long-term demography
… of amphibians are at the forefront of the biodiversity crisis, with climate change figuring prominently as a potential driver of continued amphibian decline. Changes in both the mean and variability of climate conditions may affect amphibian populations in complex, unpredictable ways. …
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Population dynamics of the Columbia spotted frog (Rana luteiventris): inference from long-term demography
… of amphibians are at the forefront of the biodiversity crisis, with climate change figuring prominently as a potential driver of continued amphibian decline. Changes in both the mean and variability of climate conditions may affect amphibian populations in complex, unpredictable ways. …
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Making a grand challenge: the social-symbolic work of conserving nature
Problems like social inequality and shrinking biodiversity seem ever more unwieldy. Scholars are called upon to study how grand challenges like these develop and how organisations respond to them. Scholars and practitioners alike tend to focus on the received and ostensibly objective facts of these …
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CHANGES OF CLIMATE ZONES AND THEIR IMPLICATIONS FOR BIODIVERSITY
Climate change is driving biodiversity redistribution on Earth, undermining the effectiveness of protected areas (PAs) in conserving global biodiversity. Managing the consequences of biodiversity redistribution and promoting effective conservation necessitates a better understanding of climate …
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The rise of modern mammalian faunas: tempo and mode of faunal turnover in western Montana during the Oligocene
The ongoing biodiversity crisis affects almost one in four mammal species. The main threat affecting them is the loss of their habitat with changes in their environment. Paleontological data allow an exploration of the patterns and processes that regulate such faunal turnovers linked to …
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From camera traps to conservation: biodiversity and mammal functional diversity in the Langkloof Corridor, Eastern Cape province, South Africa
ENGLISH ABSTRACT: The global biodiversity crisis has intensified the urgency of conservation strategies that extend beyond traditional protected areas. International frameworks such as the Convention on Biological Diversity’s Global Biodiversity Framework (GBF) calls for protecting 30% of the …
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Using population ecology to inform the conservation of Nevada's rare plants
… those trends. Plant species are facing a global biodiversity crisis, with almost two in five species of vascular plants at risk for extinction. Rare plants make up a nontrivial portion of that global diversity, but are disproportionately threatened by global change. Therefore, it is critical to …
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Responses of the Ocellated Turkey (Meleagris ocellata) to Human Disturbance
… degradation are major drivers of the current biodiversity crisis. Nowhere else are these threats more severe than in the tropics. Because the tropics are estimated to contain as much as 60% of all the species on Earth, they are critically important for the conservation of biodiversity. To …
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Investigating Predation in the Fossil Record: Modern Analogs
… of community interactions in the current global biodiversity crisis, understanding ecological and evolutionary dimensions of predation is critical to conservation biology and ecology, as predators are thought to play a vital role in maintaining ecosystem health and biodiversity. Predation has …
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Life history implications of the mother's choice for a larval habitat. Niche choice and niche conformance in the fire salamander, Salamandra salamandra
We are in the midst of a global biodiversity crisis, and many species experience drastic population declines or local extinction events. Amphibians are by far the most threatened taxon. They are highly affected by habitat loss, climate change, pollution and emerging infectious diseases such as …
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