Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"freshwater eutrophication"”.
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Urea as an Effective Nitrogen Source for Cyanobacteria
… with the reappearance of cyanobacteria blooms in freshwaters. Here, we examined urea as a nitrogen source for three bloom-forming cyanobacteria species. We found that (1) urea was consumed more rapidly relative to inorganic nitrogen substrates, suggesting that cyanobacteria exhibit a preference …
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Investigating Ammonium Toxicity In The Performance Of Recirculating Periphytic Algal Wastewater Treatment Systems
<p>Freshwater nutrient enrichment from wastewater facilities and other sources can lead to freshwater eutrophication, a threat to global aquatic ecosystems. Mechanical and chemical ways to curb this threat are either too expensive or not sustainable, and thus, not feasible. Compared to mechanical …
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Biodiversity Impact of China's Power System Transition From a Life Cycle Perspective
… Emissions (GHG), Particulate Matter Formation, Freshwater Eutrophication, Mineral Resource Use, and Land Transformation, then subsequently applied to biodiversity impact assessment. The environmental footprint results of 2020 indicate that coal power dominated climate and air pollution impacts, …
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Development and analysis of the measured annual nutrient loads from agricultural environments (manage) drainage nutrient concentration database
… transport from this land use leading to the eutrophication of surface waters and the hypoxic zone in the Gulf of Mexico. It is also vital to understand the effects of management practices in drained systems, as subsurface drains are important pathways connecting agricultural landscapes with …
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Legacy Nutrient Management and Remediation in Diverse Agricultural Watersheds
… landscapes remains a primary driver of freshwater eutrophication in the United States, despite decades of conservation investment. In many watersheds, water quality impairments persist due to the accumulation of legacy nutrients—phosphorus (P) stored in soils and nitrogen (N) stored in …
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Life Cycle Environmental Impacts and Decarbonisation Pathways of China’s Urban Water Systems
… is the primary contributor to climate change, freshwater ecotoxicity, freshwater eutrophication, human non-carcinogenic toxicity, terrestrial acidification, terrestrial ecotoxicity impacts among all UWS stages. Purchased electricity is the main driver of climate change, terrestrial …
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A life cycle-based investigation into the potential of a circular and low-carbon plastics economy in South Africa
… and ecotoxicity, fossil resource scarcity, and freshwater eutrophication. Additionally, the contribution analysis revealed that the major quantifiable environmental impacts are associated with upstream processes such as monomer and polymer production and product manufacturing with a combined …