Search for dissertations about: "Växtsamhällen"
Showing result 1 - 5 of 11 swedish dissertations containing the word Växtsamhällen.
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1. Microbial Communities in Boreal Peatlands : Responses to Climate Change and Atmospheric Nitrogen and Sulfur Depositions
Abstract : Myrmarker har en stor roll i regleringen av den globala kolbalansen och koncentrationerna av koldioxid och metan i atmosfären, vilket gör dem till speciellt viktiga ekosystem ur ett klimatförandringsperspektiv. Förändringar av myrmarker genom naturlig utveckling eller antropogen påverkan kan därför få långtgående störningar av myrars klimatreglerande funktion. READ MORE
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2. Plant species richness and community assembly in Swedish semi-natural grasslands
Abstract : .... READ MORE
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3. The vegetation of kettle-holes in central Poland
Abstract : The study aimed at an investigation of the vegetation of kettle-holes in the agricultural landscape of the Ziemia Chelminska region in northern central Poland. Most of these kettle-holes have been influenced strongly by human activities. READ MORE
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4. Remote sensing of grassland communities : integrated effects of soil nutrients and habitat age
Abstract : Semi-natural grasslands are characterized by high fine-scale plant species richness. The richest grassland communities, with many habitat-specialist species, are found in ancient grassland sites that have a long continuity of grazing management and low levels of soil nutrients. Grazed grasslands were widespread in the historical landscape. READ MORE
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5. Soil phosphorus – a multidimensional resource that plays an important role for grassland plant species richness
Abstract : The semi-natural grassland habitats contain an important part of the plant diversity in Europe. Changes in farming practices have lead to drastic decreases in plant species richness. The aim of the present thesis is to contribute to the knowledge about mechanisms governing the plant species richness in grasslands with emphasis on soil nutrients. READ MORE