Search for dissertations about: "limnology"
Showing result 1 - 5 of 94 swedish dissertations containing the word limnology.
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1. Studies on the Life Cycles of Akinete Forming Cyanobacteria
Abstract : Cyanobacteria which can form resting cells (in this case akinetes) are common in meso-eutrophic lakes in temperate regions, often dominating the phytoplankton communities during summer. The life cycles of akinete-forming cyanobacteria has been studied with Gloeotrichia echinulata as a model organism. READ MORE
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2. Greenhouse Gas Dynamics in Ice-covered Lakes Across Spatial and Temporal Scales
Abstract : Lakes play a major role in the global carbon (C) cycle, despite making up a small area of earth’s surface. Lakes receive, transport and process sizable amounts of C, emitting a substantial amount of the greenhouse gases, carbon dioxide (CO2) and methane (CH4), into the atmosphere. READ MORE
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3. Combining limnology and paleolimnology : a refined understanding of environmental sediment signal formation in a varved lake
Abstract : Paleoclimatic archives, such as lake sediments, extend our understanding of terrestrial and aquatic ecosystem dynamics in relation to climate variability beyond the period covered by instrumental data. In this context, annually laminated (i.e. READ MORE
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4. Effects of solar radiation on the abiotic and bacterially mediated carbon flux in aquatic ecosystems
Abstract : In this Thesis, I studied some of the current aspects of organic matter photochemistry. I analyzed abiotic phototransformations of several types of dissolved (DOM) and particulate organic matter (POM). I also evaluated the effects of phototransformation of several types of DOM on bacteria. READ MORE
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5. The origin and fate of sediment organic carbon in tropical reservoirs
Abstract : Recently, the construction of reservoirs has boomed, particularly in the tropics, but the impact of reservoirs on the global carbon cycle is not evident. Reservoirs accumulate sediments that simultaneously bury organic carbon (OC) and thus act as a C sink, and also produce methane (CH4) and thus emit a strong greenhouse gas. READ MORE