Effects of land use on oxygen uptake by microorganisms on fine benthic organic matter in two Appalachian mountain streams

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dc.contributor.authorSchaeffer, Mary Aliceen
dc.contributor.committeechairWebster, Jackson R.en
dc.contributor.committeememberBenfield, Ernest F.en
dc.contributor.committeememberHendricks, Albert C.en
dc.contributor.departmentBiologyen
dc.date.accessioned2014-03-14T21:51:32Zen
dc.date.adate2009-12-16en
dc.date.available2014-03-14T21:51:32Zen
dc.date.issued1993en
dc.date.rdate2009-12-16en
dc.date.sdate2009-12-16en
dc.description.abstractOxygen uptake rates by fine benthic organic matter were measured on samples from two Appalachian mountain streams to determine the effects of land use patterns on microbial respiration. Both Coweeta Creek in western North Carolina, and Wolf Creek in western Virginia, flow through national forest, agricultural land and scattered residential areas. Seven sites were sampled at six to ten week intervals over one year. Land use was determined using infrared aerial photographs. ARC/INFO was used to obtain land use areas for various land uses. Oxygen uptake rates were measured using a Gilson differential respirometer, at ambient temperature and 20°C. Temperature was the most important factor influencing oxygen uptake rates in both streams, with oxygen uptake rates consistently lower at ambient temperatures than 20°C. Oxygen uptake rates were higher in Wolf Creek than Coweeta Creek and were higher at sites that drained agricultural areas. Nitrates increased as the percent of agriculture increased in Wolf Creek, but not in Coweeta Creek. Nitrates were positively correlated with oxygen uptakeen
dc.description.degreeMaster of Scienceen
dc.format.extentix, 71 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-12162009-020244en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12162009-020244/en
dc.identifier.urihttp://hdl.handle.net/10919/46247en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1993.S323.pdfen
dc.relation.isformatofOCLC# 28922300en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1993.S323en
dc.subject.lcshBenthos -- Microbiology -- Virginia -- Coweeta Creeken
dc.subject.lcshBenthos -- Microbiology -- Virginia -- Wolf Creeken
dc.subject.lcshMicrobial respirationen
dc.subject.lcshStream ecologyen
dc.titleEffects of land use on oxygen uptake by microorganisms on fine benthic organic matter in two Appalachian mountain streamsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineBiologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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