Organic nitrogen and carbon transformations in a stream network of Chesapeake Bay watershed

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dc.contributor.advisorKaushal, Sujay Sen_US
dc.contributor.authorDelaney, Katie M.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.accessioned2009-10-06T06:42:37Z
dc.date.available2009-10-06T06:42:37Z
dc.date.issued2009en_US
dc.description.abstractIncreased export of anthropogenically-derived nitrogen in streams has contributed to increased water quality problems. I investigated in-stream transformations of nitrogen and carbon at the benthic habitat and reach network scale. Both indicated large transformations of dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) along the Gwynns Falls urban stream network. In-stream transformation of DON and DOC declined from headwaters to outflow, with a mean 23% removal of DOC and 57% removal of DON. Transformation rates ranged from in-stream internal loading of 28 g/m<super>2</super>/day to in-stream removal of 740 g/m<super>2</super>/day for DOC (mean: uptake 64 g/m<super>2</super>/day) and in-stream internal loading of 4.8 g/m<super>2</super>/day to in-stream removal of 74 g/m<super>2</super>/day for DON (mean: uptake 3.5 g/m<super>2</super>/day). Urban stream networks may act as both "transporters" and "transformers" of nitrogen and knowledge regarding in-stream N transformations is critical in predicting the sources and removal of nitrogen en route to adjacent tidal waters.en_US
dc.format.extent1884127 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/9659
dc.language.isoen_US
dc.subject.pqcontrolledBiogeochemistryen_US
dc.subject.pqcontrolledBiology, Ecologyen_US
dc.subject.pqcontrolledBiology, Limnologyen_US
dc.subject.pquncontrolledDOCen_US
dc.subject.pquncontrolledDONen_US
dc.subject.pquncontrolledin-stream processingen_US
dc.subject.pquncontrolledorganic nitrogenen_US
dc.subject.pquncontrolledtransformation ratesen_US
dc.subject.pquncontrolledurbanizationen_US
dc.titleOrganic nitrogen and carbon transformations in a stream network of Chesapeake Bay watersheden_US
dc.typeThesisen_US

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