Search for dissertations about: "food abundance"
Showing result 6 - 10 of 154 swedish dissertations containing the words food abundance.
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6. Direct and indirect effects of fish predation and excretion in aquatic food webs
Abstract : 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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7. The role of terrestrial and phytoplankton-derived organic matter in planktonic food webs
Abstract : Lakes are important global ecosystems and many of them are nutrient-poor (unproductive). Especially in northern boreal latitudes, lakes may be heavily subsidized by terrestrial organic material (t-OM) from peat layers in the catchment. READ MORE
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8. High fiber rye foods decrease body weight and body fat and affect metabolic risk markers
Abstract : Overweight and obesity are major risk factors for development of non-communicable diseases, such as type-2 diabetes and cardiovascular disease, and increase the risk of early mortality. Diet and food consumption are among the most important factors in preventing and reversing overweight, obesity and their comorbidities. READ MORE
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9. Whole grain and the gut-brain axis : The role of microbiota composition, dietary fiber, and metabolites
Abstract : Whole grain (WG) is rich in dietary fiber, other nutrients, and phytochemicals, and has potential effects on the brain through the gut-brain axis and non-microbiotarelated routes. This thesis explored the interplay between gut microbiota, dietary fiber, and microbiota-derived metabolites during in vitro fermentation of WG oat bread, WG rye bread, and refined bread. READ MORE
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10. Protecting food with poison : Exploring ecotoxicity of agrochemicals and pharmaceuticals
Abstract : Chemicals are being emitted into the environment through human activities, such as agriculture or animal husbandry. Emissions can either occur intentionally, as pesticide application of crops, or inadvertently, such as pharmaceutical residues in wastewater effluents. READ MORE