Search for dissertations about: "marginal and central populations"
Showing result 1 - 5 of 7 swedish dissertations containing the words marginal and central populations.
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1. The spatial structure of genetic and morphometric variation in Corylus avellana (Betulaceae): pattern and scale
Abstract : In the present thesis, I investigated the spatial structure of genetic and morphometric variation in the widespread wind-pollinated shrub Corylus avellana (L.) Betulaceae, hazel, and related the variation to geographic distribution and different spatial scales. READ MORE
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2. Genetic structure and dispersal in plant populations
Abstract : This thesis focuses on the spatial structure and methods to identify spatial structure in plants. Methods that investigate genetic structure can mainly be divided into equilibrium methods that reveal summed dispersal over many generations, and cluster methods, that reveal more recent dispersal events. READ MORE
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3. Essays on Conflict, Institutions, and Ethnic Diversity
Abstract : The thesis consists of five self-contained papers. Paper 1: Social Capital vs Institutions in the Growth Process Is social capital a substitute or a complement to formal institutions for achieving economic growth? Research on the impacts of social capital and formal institutions on economic development have so far mainly emerged as two distinct …elds. READ MORE
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4. Population size, viability and genetic diversity in the orchid Gymnadenia conopsea
Abstract : In this thesis, I combined controlled crosses with genetic and demographic data to examine how a main conservation value indicator, population size, was associated with estimates of population viability. I focused on the still common, but decreasing, perennial orchid Gymnadenia conopsea at two spatial scales—locally on the island Öland, in SE Sweden, and regionally across Scandinavia. READ MORE
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5. Population biology of the clonal plant Ranunculus lingua
Abstract : The scope of this thesis was to identify, describe and quantify important life-history traits for the pseudoannual aquatic plant Ranunculus lingua in different ecological settings, by comparing populations from geographically marginal vs. central habitats. READ MORE