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 16 of 16 for “"demographic models"”.
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On the use of demographic models to inform amphibian conservation and management: A case study of the reticulated flatwoods salamander
… populations of A. bishopi to construct a demographic model that can be used to evaluate future extinction risk. In chapter one, we quantify population sizes through time, and estimate the impact of annual variability in numbers on genetic viability. This species exists in small (< 500) …
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Demografía y ecología evolutiva del subarbusto carnívoro Drosophyllum lusitanicum (L.) Link. (Drosophyllaceae)
… and in-situ field experiments and stochastic demographic models quantified biological and ecological characteristics of the study species that could be linked to an important, positive role of recurrent fires in population dynamics. At the same time, population censuses across the species …
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Mark-recapture statistics and demographic analysis
… provide a link between mark-recapture data and demographic models such as matrix population models and integrodifference models. I resolve some issues that are commonly encountered during sampling, such as the fact that the sex or life-stage of some individuals is unknown during some sampling …
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Inferring Genomic Histories of Structured Populations: Lessons from the Hominids
… analysis of locus ancestry under idealised demographic models. It jointly analyses samples of ancient and modern whole genomes in which modern sequences trace some recent part of their ancestry to populations from which the ancient sequences are drawn. I illustrate some of the possibilities …
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Modelagem dos registros de nascimentos com as condições de vida no semiárido brasileiro
… a dependent, and nineteen socio-economic and demographic models as independent. Two data bases banks were built: Bank 1- that considered being bene ciary or having income monthly from the Social Program Bolsa Família or Child Labor Eradication Program, and Bank 2, without considering this …
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Statistical inference in stochastic/deterministic epidemic models to jointly estimate transmission and severity
… high censored data, new methods, inspired by demographic models and by parametric survival analysis, are formulated. A comprehensive review of these methods and existing methods is also carried out. To jointly estimate transmission and severity, an initial Bayesian epidemic model is fitted to …
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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
… offer a great data set to fit process-based models. These species are subject to wildflower 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. …
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Introgression, Population Structure, and Systematics of the Sphagnum capillifolium complex
<p>How geographical distance and historical events affect patterns of population divergence and gene flow is an important question in evolution and biogeography. Sphagnum subgenus Acutifolia is one of the four major subgenera of Sphagnum peatmoss comprising numerous species with broad geographic …
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Mark-recapture statistics and demographic analysis
… provide a link between mark-recapture data and demographic models such as matrix population models and integrodifference models. I resolve some issues that are commonly encountered during sampling, such as the fact that the sex or life-stage of some individuals is unknown during some sampling …
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Some characteristics and environmental sensitivities of taxpayers taking the United States political contribution tax credit during 1979-1982
… regression analysis. Statistically significant models have been developed for each period tested. The explanatory power of the models is low. Income level was associated with the credit for each period tested; several other variables were also associated with the credit for over half of the …
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Looking into the Past: The Diversification of Amphibians in the Neotropical Savannas
… I applied phylogenetic, phylogeographic, demographic, and coalescent species delimitation methods to these molecular data, in combination with species distribution modeling for the past, in order to resolve questions of evolutionary history, taxonomic diversity, species boundaries, and …
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Investigating the Impact of Employment and Demographic Factors on Health Among Bereaved Adults: A Quantitative Approach
… how bereavement, employment-related factors, and demographic characteristics are associated with health among working-age adults. The Georgia Behavioral Risk Factor Surveillance System (BRFSS) offered a large dataset for examining these relationships.</p> <p>This retrospective, exploratory, …
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Combining natural enemies and selective pesticides in IPM programmes of exotic pests: the Tuta absoluta (Lepidoptera: Gelechiidae) case
… sex-ratio of the progeny. In addition, demographic models developed by integrating possible sublethal effects of pesticides on B. nigricans life history traits, showed that biopesticides would strongly impact long-term population growth of the wasp. A thorough review of articles …
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Household moving and tenure behavior : translating retrospective "Recent Mover" surveys into prospective moving decisions
… bias. Then, this study uses discrete choice models to identify key household and housing factors that influence households' moving behavior at the household-level. In order to capture household characteristics at the time of decision-making, the household characteristics for those households …
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Spatiotemporal Modeling for Wildlife Demographic Analysis: Bridging Analysis to Waterfowl Conservation
… is critical to understanding the fundamental demographic processes (e.g. reproduction, survival, growth, and dispersal) that govern populations and manage them in an increasingly altered world. Population dynamics often respond to environmental alterations, such as habitat fragmentation, …
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Mortality, morbidity and population health dynamics
… process, which underpin the validity of demographic models of mortality and morbidity, and their population level manifestations. These theoretical extensions provide the context for an evaluation of contemporary theories on mortality trends and changes in morbidity in relation to …