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dc.contributor.advisorSheldon, Fran
dc.contributor.authorNewham, Michael Johnen_US
dc.date.accessioned2018-01-23T02:26:36Z
dc.date.available2018-01-23T02:26:36Z
dc.date.issued2011en_US
dc.identifier.urihttp://hdl.handle.net/10072/366141
dc.description.abstractWorldwide, contamination of streams and groundwater with excess nitrate has been linked to agricultural land use and particularly to the application of nitrogen fertilisers to increase agricultural production. Nitrate is an effective contaminant in agricultural areas; it is highly mobile, having a low affinity for soil sorption, and so moves with runoff and sub-surface flows. Excess nitrate can cause ecological impacts on waterways and coastal receiving water through eutrophication and, in some cases, contributes to coastal ‘dead zones’. Nitrate also has toxicological effects on aquatic organisms and those using contaminated water as a drinking source. Riparian zones, those zones where interaction of aquatic and terrestrial environments occurs, are identified as areas of intense biogeochemical cycling and can act as buffers against excess nitrate by reducing the amount of nitrate reaching stream channels. Nitrate retention processes of biotic uptake and transformation to less mobile forms can increase the residence time of nitrate within the riparian zone, while removal processes of denitrification can permanently remove nitrate-nitrogen in gaseous forms.en_US
dc.languageEnglishen_US
dc.publisherGriffith Universityen_US
dc.publisher.placeBrisbaneen_US
dc.rights.copyrightThe author owns the copyright in this thesis, unless stated otherwise.en_US
dc.subject.keywordsNitrate retention in streamsen_US
dc.subject.keywordsRiparian nitrate removalen_US
dc.subject.keywordsRiparian zonesen_US
dc.titleNitrate Retention and Removal in Sub-Tropical Riparian Zonesen_US
dc.typeGriffith thesisen_US
gro.facultyScience, Environment, Engineering and Technologyen_US
gro.hasfulltextFull Text
dc.contributor.otheradvisorBunn, Stuart
dc.rights.accessRightsPublicen_US
gro.identifier.gurtIDgu1342670681891en_US
gro.source.ADTshelfnoADT0en_US
gro.source.GURTshelfnoGURT1213en_US
gro.thesis.degreelevelThesis (PhD Doctorate)en_US
gro.thesis.degreeprogramDoctor of Philosophy (PhD)en_US
gro.departmentGriffith School of Environmenten_US
gro.griffith.authorNewham, Michael


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