Search for dissertations about: "nitrogen mineralization"
Showing result 1 - 5 of 22 swedish dissertations containing the words nitrogen mineralization.
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1. Microbial mobilization and immobilization of soil nitrogen
Abstract : Microorganisms in forest ecosystems normally recycle nitrogen (N), such that gaseous losses and leaching are limited. Mobilization of organic N, including microbial N, and immobilization of inorganic N, especially NH4+, are the quantitatively most important N transformation processes. Various factors influence their rates, e.g. READ MORE
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2. Nitrogen transformations in wetlands: Effects of water flow patterns
Abstract : In this thesis, I have studied nitrogen turnover processes in watermeadows. A watermeadow is a wetland where water infiltrates through the soil of a grassland field. READ MORE
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3. The Nitrogen Cycle in Soil - Climate Impact and Methodological Challenges in Natural Ecosystems
Abstract : Nitrogen (N) is a fundamental element for life, and limiting in many terrestrial ecosystems. In non-N-fertilized ecosystems, the N inputs can be low, and the nutrient availability for plants is determined by the internal cycling of N. READ MORE
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4. Priming of carbon and nitrogen mineralization in forest soils
Abstract : Decomposition of soil organic matter (SOM) contributes significantly to the global carbon (C) cycle and climate feedbacks. SOM decomposition depends on soil microbial activities, and these activities are driven by the availability of C and other nutrients. READ MORE
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5. Nutrient Limitation of Bacterial Growth in Soil
Abstract : Lack of carbon has been assumed to be the most common limiting factor for bacterial growth in soil, although there are reports of limitation by nitrogen and phosphorus. I have studied nutrient limitation of bacterial growth in soil using a novel technique, where thymidine or leucine incorporation is used to detect changes in growth rates after adding nutrients. READ MORE