Search for dissertations about: "biotic interactions"
Showing result 1 - 5 of 73 swedish dissertations containing the words biotic interactions.
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1. Phenolics, Nitrogen, and Biotic Interactions : A Study of Phenylpropanoid Metabolites and Gene Expression in the Leaves of Populus tremula
Abstract : European aspen (Populus tremula) is a fast growing tree species, rich in phenolic compounds. Defense theories suggest that soil nitrogen greatly influence plant allocation togrowth and defense; however, the allocation priorities are not well understood. READ MORE
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2. Spatial heterogeneity and biotic interactions : scaling from experiments to natural systems
Abstract : Much of current ecological theory stems from experimental studies. These studies have often been conducted in closed systems, at spatial scales that are much smaller than the systems of interest. READ MORE
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3. Interactions between plants, microbes and insects
Abstract : Plants interact with an astonishing diversity of insects and microorganisms. Both above- and belowground, plants are attacked by herbivores and pathogens, and interact with mutualists such as pollinating insects and beneficial microorganisms. READ MORE
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4. Indirect biotic interactions in the rhizosphere
Abstract : The rhizosphere (the soil environment around plant roots) is characterized by complex direct and indirect interactions among its organisms. Studies of interactions among organisms in the rhizosphere are difficult to carry out due to a high diversity of inconspicuous organisms on a micro scale and the highly heterogeneous nature of the soil environment. READ MORE
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5. Aquatic vegetation in coastal ecosystems : The role of biotic interactions and environmental change for ecosystem functions and resilience in the Baltic Sea
Abstract : Coastal ecosystems are among the most productive on Earth but subjected to many human pressures. In shallow coastal areas, aquatic vegetation constitutes foundation species that sustain secondary production and act as a nutrient filter, which may buffer human impacts. READ MORE