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 10 of 10 for “"Agricultural pollution"”.
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Constructed treatment wetlands: Tools to attenuate diffuse agricultural pollution and enhance the biodiversity of eutrophic peat lake ecosystems
Agricultural land use is a major source of nitrogen (N), phosphorus (P) and suspended sediment (SS) to aquatic ecosystems. Elevated inputs of N, P and SS associated with agricultural expansion and intensification have led to widespread degradation of surface waters throughout the world, causing …
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Welfare Impacts of Alternative Public Policies for Environmental Protection in Agriculture in an Open Economy: A General Equilibrium Framework
… gains) for two main reasons: pre-existing agricultural support subsidies and exports of agricultural products. The extent of the welfare gains differ across policies and with the nitrogen reduction target. In addition, this dissertation shows that a two-part instrument (a combination of …
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Agricultural slurry an increasing problem to the environment: A comparative study of controls in the UK, Netherlands and Denmark
Pollution of watercourses from farm waste have been steadily increasing mainly as a result of deliberate or accidental discharge. A number of factors have contributed to this steady increase; the increase in intensive livestock farming has generally occurred without the necessary improvements in …
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Pollutant swapping in constructed agricultural wetlands
Diffuse agricultural pollution presents a major challenge to global water quality management, requiring the adoption of new land management practices such as constructed agricultural wetlands. These wetlands, promoted in agri-environment schemes, may effectively intercept rainfall-mobilised …
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Biogeochemistry of denitrifying bioreactors to enhance phosphorus removal from agricultural subsurface drainage
… a global environmental concern. In Aotearoa, agricultural pollution of freshwaters by nutrients is increasing. Therefore, strategies need to be implemented to minimize nutrient pollution in surface waters. Denitrifying bioreactors (DBRs) are a prominent edge-of-field treatment technology to …
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Landscape and climate drivers of harmful algal blooms in Iowa
1 PDF file (viii, 74 pages)
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Assessment and prediction of surface water vulnerability from non-point source pollution in Midwestern watersheds
<p>"Non-point source pollution is the leading cause of impairment in surface water in the Midwest. In this research, we seek to predict which watersheds are most vulnerable to point source pollution without field sampling using publically available GIS databases. Watersheds with higher …
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Bovine faecal contamination in an Irish agricultural catchment: sources and pathways
Agricultural impacts on surface waters have been an intensive source of contamination on freshwaters worldwide. Faecal contamination is one of the most under regulated and poorly understood pollutants within Irelands surface waters, despite is widely recorded ability to cause harm to both animals …