Search for dissertations about: "diversification rates"
Showing result 1 - 5 of 24 swedish dissertations containing the words diversification rates.
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1. Bayesian Phylogenetic Inference : Estimating Diversification Rates from Reconstructed Phylogenies
Abstract : Phylogenetics is the study of the evolutionary relationship between species. Inference of phylogeny relies heavily on statistical models that have been extended and refined tremendously over the past years into very complex hierarchical models. READ MORE
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2. Multi-trait Branching Models with Applications to Species Evolution
Abstract : This thesis provides an analysis of the evolution of discrete traits and their effect on the birth and survival of species using the theory of supercritical, continuous time Markov branching processes. We present a branching modeling framework that incorporates multi-trait diversification processes associated with the emergence of new species, death of existing species, and transition of species carrying one type of a trait to another. READ MORE
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3. Microbial evolution: patterns of diversity in aquatic protists
Abstract : Little is known about how microbes diversify in nature. In contrast to the more studied multicellular organisms, microbes can have a) huge population sizes, b) high reproductive rates and c) long-distance dispersal. These characteristics can affect their tempo and mode of diversification in ways that still need to be understood. READ MORE
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4. Essays on exchange rates and international finance
Abstract : This dissertation consists of three essays. Essay 1: Common Trends in Prices and Exchange Rates – Tests of Long-Run Purchasing Power Parity. This essay examines the empirical validity of long-run purchasing power parity by means of multivariate cointegration tests due to Johansen (1988, 1991a). READ MORE
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5. Rural Income Diversification, Employment, and Differentiation in Kenya and Implications for Rural Change
Abstract : To contribute to contemporary rural development debates, the present thesis conducts a contextual analysis of rural development using Kenya as a case study from the colonial era to today. To perform the analysis, two critical trends in rural Africa are focused on: socioeconomic differentiation and rural income diversification, with a particular focus on large-scale farm employment. READ MORE