Search for dissertations about: "grazed grasslands"
Showing result 1 - 5 of 15 swedish dissertations containing the words grazed grasslands.
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1. Plant community assembly in grazed grasslands
Abstract : Species assembly into local communities from the surrounding region can be caused either by species failure to reach the site (i.e. seed limitation) or to establish (i.e. READ MORE
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2. Conservation of semi-natural grasslands : Effects of different management methods on biodiversity
Abstract : Species-rich semi-natural grassland are valuable habitats in the agricultural landscape as they may contain a high diversity of both plant and animal species, as well as provide essential ecosystem services like pollination. To keep these habitats open and to maintain the biodiversity in them, management like grazing or mowing is necessary. READ MORE
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3. Monitoring biodiversity in cultural landscapes: development of remote sensing- and GIS-based methods
Abstract : In this thesis, I explore the relationships between structural and compositional landscape properties, and species diversity, using remotely sensed data on a variety of spatial scales. The thesis shows that increased landscape heterogeneity, measured using environmental and spectral variables that were used both separately and combined, is generally positively related to plant species richness. READ MORE
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4. Land Use Change in Space and Time : implications for plant species conservation in semi-natural grasslands
Abstract : Land use change has during the last century altered the traditional rural landscape in Sweden, resulting in a major decline in species diversity. Traditional small-scale farming, with a remarkably high small-scale species richness, has changed in favour of rationalized agriculture, and many semi-natural grasslands, i.e. READ MORE
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5. Regional and local variation in plant species richness
Abstract : In this thesis, I examine the variation in plant species richness along gradients of productivity and disturbance in grasslands and forest habitats in southern Sweden, and I compare the documented patterns with theoretical predictions. Moreover, I evaluate the relative importance of habitat quality and habitat configuration for the occurrence of field layer species in deciduous forests. READ MORE