Search for dissertations about: "demographic structure"
Showing result 6 - 10 of 85 swedish dissertations containing the words demographic structure.
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6. Population Genetic Structure of Black Grouse (Tetrao tetrix) : From a Large to a Fine Scale Perspective
Abstract : Black grouse (Tetrao tetrix) is a bird species with a lek mating system found in the Palearctic boreal taiga. It is assumed that it has a continuous distribution along Scandinavia and Siberia, whereas in Central Europe it has declined during the last decades. READ MORE
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7. Hybridization and Evolution in the Genus Pinus
Abstract : Gene flow and hybridization are pervasive in nature, and can lead to different evolutionary outcomes. They can either accelerate divergence and promote speciation or reverse differentiation. The process of divergence and speciation are strongly influenced by both neutral and selective forces. READ MORE
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8. Genetic Disequilibria and the Interpretation of Population Genetic Structure in Daphnia
Abstract : Understanding the processes that shape the spatial distribution of genetic variation within species is central to the evolutionary study of diversification and demography. Neutral genetic variation reflects past demographic events as well as current demographic characteristics of populations, and the correct interpretation of genetic data requires that the relative impact of these forces can be identified. READ MORE
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9. Fishing the gene pool : Genetic structure, admixture and behavioural complexity in fisheries management
Abstract : Prudent management of marine fish resources relies on separation and management of biologically meaningful groups of conspecifics, termed fishery stocks, often depicted as self-sustaining, spatiotemporally separated and demographically independent entities. Such stock discrimination has however proven challenging. READ MORE
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10. Past demography and local adaptation in forest trees : Insights from natural populations and breeding programs of Norway spruce
Abstract : Spatial changes in natural selection patterns can give rise to local adaptation and genetic differentiation between populations. Local adaptation for phenological traits is pronounced in many forest tree species. READ MORE