Search for dissertations about: "Systems Ecology"
Showing result 6 - 10 of 336 swedish dissertations containing the words Systems Ecology.
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6. Predator-prey interactions in freshwater systems: The importance of chemical communication
Abstract : Predator released chemical cues provide a valuable source of information to prey organisms that can be used to alter their behaviour in order to reduce predation risk. In this thesis, I have examined under what circumstances chemical cues may be used by prey, and if prey discriminate between different cues. READ MORE
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7. Food web dynamics in open and closed systems
Abstract : This thesis is a summary of enclosure and microcosm experiments that aimed to study the impact of allochtonous subsidies on food web dynamics in a heterogeneous food web. In the enclosure studies, a three trophic level littoral food web was used. READ MORE
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8. Plumage Colours and the Eye of the Beholder : The Ecology of Colour and its Perception in Birds
Abstract : Virtually all diurnal birds have tetrachomatic vision based on four different colour receptors. As a result, birds are potentially able to perceive their environment in twice as many colours as humans and four times as many colours compared to most other mammals, which are dichromatic. READ MORE
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9. Female Reproductive Strategies in the Ruff (Philomachus pugnax)
Abstract : Traditionally, females have been considered to be strictly monogamous. Today, we know that females in the majority of species actively seek out and mate with several males. Trying to understand female preferences, including what benefits mate choice entails, has been the focus of intense research during the last decades. READ MORE
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10. High-throughput DNA Sequencingin Microbial Ecology : Methods and Applications
Abstract : Microorganisms play central roles in planet Earth’s geochemical cycles, in food production, and in health and disease of humans and livestock. In spite of this, most microbial life forms remain unknown and unnamed, their ecological importance and potential technological applications beyond the realm of speculation. READ MORE