Phosphate-mineral interactions and potential consequences for nutrient cycling


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dc.contributor.author Oates, Roger Hunter
dc.coverage.spatial Massachusetts
dc.date.accessioned 2008-09-04T16:49:52Z
dc.date.available 2008-09-04T16:49:52Z
dc.date.issued 2008-06
dc.identifier.uri http://hdl.handle.net/1912/2395
dc.description Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 2008. en
dc.description.abstract Biogeochemical cycling of phosphate is a key component in the overall production rate of coastal ecosystems. Mineral phases in the near-shore sediments play a significant role in the return of phosphate remineralized in the upper sediments to the water column. Sequential Extraction (SEDEX) of the solid-phase associated PO4-3 yielded reservoir profiles of phosphate at three sites off of the Massachusetts coast. These extractions found Fe-associated PO4 to be the dominant phase associated with rapid porewater-solid P exchange. Additionally, a seasonal enrichment/depletion pattern of phosphate fluxes relative to total carbon was observed from the sediments. These observations established the behavior of phosphate in coastal sediments as interconnected with the ongoing Fe-cycling in the sediments as well. en
dc.description.sponsorship This work was made possible by sponsorship and funding provided by NOAA, (U.S. Department of Commerce (Grant # NA06OAR4170021, project # R/G-29)); National Science Foundation (Grant # OCE-0526389); WHOI / USGS Cooperative Agreement; and the WHOI Academic Programs Office. en
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Massachusetts Institute of Technology and Woods Hole Oceanographic Institution en
dc.relation.ispartofseries WHOI Theses en
dc.subject Nutrient cycles en_US
dc.subject Phosphate minerals en_US
dc.title Phosphate-mineral interactions and potential consequences for nutrient cycling en
dc.type Thesis en
dc.identifier.doi 10.1575/1912/2395

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