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dc.contributor.authorFlaishans, Jonathan Mark
dc.date.accessioned2014-03-04T18:59:01Z
dc.date.available2014-03-04T18:59:01Z
dc.date.issued2010-12
dc.identifier.otherflaishans_jonathan_m_201012_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/flaishans_jonathan_m_201012_ms
dc.identifier.urihttp://hdl.handle.net/10724/26894
dc.description.abstractEutrophication alters the quality of surface water, limiting its use for drinking water and recreation. A notable chemical alteration to surface waters is a photosynthetically elevated pH, where phytoplankton production raises the pH due to the depletion of aqueous carbonate species. Elevated pH limits phosphorus (P) adsorption to iron oxides, releasing P into solution through alkaline desorption. This study characterizes suspended sediments (SS) in Georgia Piedmont streams in an effort to better understand P desorption mechanisms in terms of a photosynthetically elevated pH. SS behave like topsoils at low solution P concentrations but are able to sorb high P concentrations like subsoils. Alkaline P desorption from SS and cultivated topsoils is substantial at high sediment loading. Cultivated topsoils pose the greatest risk to causing eutrophic waters through alkaline P desorption. Subsoils act as P sinks in the aquatic environment and pose little risk when exposed to a photosynthetically elevated pH.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectphosphorus
dc.subjectiron oxides
dc.subjectalkaline desorption
dc.subjectadsorption isotherm
dc.subjectphotosynthetically elevated pH
dc.subjectreservoir
dc.subjectBroad River
dc.subjectPiedmont
dc.titlePhosphorus adsorption-desorption from soils and sediments with a photosynthetically elevated PH
dc.typeThesis
dc.description.degreeMS
dc.description.departmentCrop and Soil Sciences
dc.description.majorCrop and Soil Sciences
dc.description.advisorWilliam P. Miller
dc.description.committeeWilliam P. Miller
dc.description.committeeTodd C. Rasmussen
dc.description.committeeMiguel L. Cabrera


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