Dynamics of nitrogen and methane in ground and surface waters

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dc.contributor.advisorFisher, Thomas Ren_US
dc.contributor.authorBunnell-Young, Dana Elizabethen_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.accessioned2021-07-07T05:33:16Z
dc.date.available2021-07-07T05:33:16Z
dc.date.issued2020en_US
dc.description.abstractMethane and nitrogen have critically important biogeochemical cycles. Methane is a strong greenhouse gas, while nitrogen is a eutrophication agent in estuarine and coastal systems. This thesis investigates the presence of methane and nitrogen in groundwater and streams as well as any linkages between these biogeochemical cycles. In agricultural groundwater with elevated nitrogen concentrations, dissolved methane concentrations ranged from 0 to over 400 M. Restored streams in forested and urban watersheds had a range of methane concentrations from 0 to 5.37 M. The impact of land use was investigated as well, finding that within 3-5 years after the cessation of intensive grain production, groundwater nitrate concentrations in the top of the surface unconfined aquifer dropped from 11 mg NO3--N L-1 to 0.5 mg NO3--N L-1. Biogeochemical methods were used to investigate the process of anaerobic oxidation of methane coupled to denitrification in agricultural soils and groundwater.en_US
dc.identifierhttps://doi.org/10.13016/adpg-dqe7
dc.identifier.urihttp://hdl.handle.net/1903/27221
dc.language.isoenen_US
dc.subject.pqcontrolledBiogeochemistryen_US
dc.subject.pqcontrolledEnvironmental scienceen_US
dc.subject.pqcontrolleden_US
dc.titleDynamics of nitrogen and methane in ground and surface watersen_US
dc.typeThesisen_US

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