Search for dissertations about: "freshwater and marine ecology Marine ecology"
Showing result 1 - 5 of 208 swedish dissertations containing the words freshwater and marine ecology Marine ecology.
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1. Evolutionary ecology of arctic char (Salvelinus alpinus (L.)) : Intra- and interspecific interactions in circumpolar populations
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : This thesis examines a suite of ecological and genetic mechanisms influencing the fundamental and realized niche borders of European and North American populations of the Arctic char (Salvelinus alpinus (L.)) species complex in allopatry as well as in sympatry with brown trout (Salmo trutta) or brook trout (Salvelinus fontinalis). READ MORE
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2. Sex and symbionts New discoveries in local and regional patterns of coral ecology and reproduction
University dissertation from Stockholm : Department of Systems Ecology, Stockholm UniversityAbstract : Coral reefs belong to the most diverse and the most threatened ecosystems on earth. Anthropogenic stressors and climate change have led to mortalities at levels unprecedented in modern times. The aims of this thesis are to investigate aspects of the corals’ ability to reproduce, disperse, adapt and survive. READ MORE
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3. Marine Seaweed Invasions the Ecology of Introduced Fucus evanescens
University dissertation from Stockholm : Botaniska institutionenAbstract : Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fate and effect of a perennial, habitat-forming seaweed introduced to a coastal ecosystem. READ MORE
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4. Predator-prey interactions in freshwater systems: The importance of chemical communication
University dissertation from Kajsa Åbjörnsson, Limnology, Ecology Building, S-223 62 Lund, SwedenAbstract : 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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5. Network Based Tools and Indicators for Landscape Ecological Assessments, Planning, and Design
University dissertation from Stockholm : Land and Water Resources EngineeringAbstract : Land use change constitutes a primary driving force in shaping social-ecological systems world wide, and its effects reach far beyond the directly impacted areas. Graph based landscape ecological tools have become established as a promising way to efficiently explore and analyze the complex, spatial systems dynamics of ecological networks in physical landscapes. READ MORE
