Reservoir Scour as a Major Source of Bioavailable Phosphorus to a Coastal Plain Estuary?

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dc.contributor.advisorCornwell, Jeffrey Cen_US
dc.contributor.authorVulgaropulos, Zoe L.en_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2017-09-14T05:50:03Z
dc.date.available2017-09-14T05:50:03Z
dc.date.issued2017en_US
dc.description.abstractSuspended sediment and particulate phosphorus (P) loads from the Susquehanna River, the largest tributary to the Chesapeake Bay, have been increasing due to the infilling of the Lower Susquehanna reservoirs and event-driven scour of sediment from behind the dams. A synthesis of sediment-water exchange data along the Bay salinity gradient confirmed that P likely remains associated with particles except under sulfate reducing conditions in the mid-Bay, where the formation of iron sulfides releases iron-bound phosphate to the water column. To estimate what fraction of scoured particulate P could become bioavailable through iron sulfide formation, P was extracted from reservoir sediment samples using a sulfide solution. Other extractions were used to quantify total P, inorganic P, and iron. Sulfide-extractable P ranged up to about 35% of total P. Findings showed that the reactivity of scoured particulate P would likely be limited and dependent on environmental conditions at the site of deposition.en_US
dc.identifierhttps://doi.org/10.13016/M26Q1SH5S
dc.identifier.urihttp://hdl.handle.net/1903/20038
dc.language.isoenen_US
dc.subject.pqcontrolledEnvironmental scienceen_US
dc.titleReservoir Scour as a Major Source of Bioavailable Phosphorus to a Coastal Plain Estuary?en_US
dc.typeThesisen_US

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