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dc.contributor.authorHart, Adam Michaelen_US
dc.date.accessioned2013-06-22T08:00:07Z
dc.date.available2013-06-22T08:00:07Z
dc.date.issued2013-06-21en_US
dc.identifier.othervt_gsexam:1324en_US
dc.identifier.urihttp://hdl.handle.net/10919/23256
dc.description.abstractHistorically, whole stream open channel metabolism has been measured over short periods in conjunction with nutrient injections to assess nutrient dynamics within streams. The purpose of my study was to understand the seasonal changes in metabolism within and among streams as well as the impacts of different land use. This was addressed by monitoring nine different watersheds in the Little Tennessee River watershed in southwestern North Carolina.  The nine study watersheds were selected to represent a gradient of forested, agricultural, and developed land use / land cover types. Data loggers were deployed to collect continuous oxygen, temperature, conductivity, and stage height data from 2010-2011. I used these data to estimate gross primary production (GPP) and ecosystem respiration (ER). GPP and ER were compared to stream chemistry, light, land cover, and storms. I found that there is greater influence of local riparian land cover than watershed land cover on GPP and ER. Streams had varying annual GPP, but generally the peak in GPP occurred in late winter- early spring with lows in fall. GPP was most strongly influenced by the amount of available light, which is directly related to the amount of canopy cover. ER was much more variable than GPP within and among streams but generally peaked in summer and was lowest in the winter. ER was most strongly related to the proportion of agricultural land cover in the local riparian area. My results suggest that local riparian vegetation may have a greater impact on metabolism than mountainside development.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectmetabolismen_US
dc.subjectgross primary productionen_US
dc.subjectrespirationen_US
dc.subjectstreamsen_US
dc.subjectexurbanizationen_US
dc.titleSeasonal Variation in Whole Stream Metabolism across Varying Land Use Typesen_US
dc.typeThesisen_US
dc.contributor.departmentBiological Sciencesen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineBiological Sciencesen_US
dc.contributor.committeechairWebster, Jackson R.en_US
dc.contributor.committeememberBenfield, Ernest Fredricken_US
dc.contributor.committeememberDolloff, C A.en_US


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