Search for dissertations about: "Ekologi"
Showing result 1 - 5 of 1138 swedish dissertations containing the word Ekologi.
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1. Chemical Communication and Mate Choice Investigations into the Meaning of a Fruit Fly Pheromone
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : Chemical signals are the most widely used form of sexual communication throughout the living world. However, there is in general little knowledge about what these signals actually communicate. The role of chemical signals, i.e. READ MORE
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2. Mosquitoes as a Part of Wetland Biodiversity
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : Wetlands contain both aquatic and terrestrial environments which generates high biodiversity. However, they are commonly associated with mosquitoes (Diptera: Culicidae), and mosquitoes are usually regarded as negative by humans because they can cause nuisance and transmit diseases. READ MORE
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3. Foraging behaviour in benthivorous fish
University dissertation from Department of Ecology, Lund UniversityAbstract : The foraging ability of an organism is essential since it affects various traits, e.g. growth, reproduction effort, social status and, ultimately, fitness. READ MORE
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4. Direct and indirect effects of fish predation and excretion in aquatic food webs
University dissertation from Limnologiska avdelningen, Ekologihuset S-223 62 Lund, SwedenAbstract : The aim of this thesis was to elucidate the mechanisms by which planktivorous fish can affect planktonic communities in lakes and how they may affect benthic communities through their effects on planktonic communities. In a laboratory experiment, nutrients released by fish increased algal biomass and altered phytoplankton community structure, suggesting that fish can affect phytoplankton by directly releasing nutrients. READ MORE
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5. Limitations and possibilities for microbial degradation of organic contaminants in aquifers
University dissertation from Christel Carlsson, Department of Ecology, Chemical Ecology and Ecotoxicology, Lund UniversityAbstract : Many factors can influence the rate of microbial degradation of organic contaminants in aquifers. Some of these factors, e.g. READ MORE
