EVALUATING CARBON SEQUESTRATION POTENTIAL OF NATURAL AND RESTORED TIDAL MARSHES IN CHESAPEAKE BAY THROUGH QUANTIFICATION OF METHANE FLUXES AND IDENTIFICATION OF DRIVERS

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dc.contributor.advisorStaver, Lorieen_US
dc.contributor.advisorCornwell, Jeffreyen_US
dc.contributor.authorHanacek, Daniellaen_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.accessioned2023-02-01T06:46:07Z
dc.date.available2023-02-01T06:46:07Z
dc.date.issued2022en_US
dc.description.abstractThe production of methane in brackish marshes may offset the carbon sequestered by these wetlands. Brackish tidal marshes are widespread in Chesapeake Bay and there exists a need for understanding the carbon balance of these ecosystems. This thesis presents the results of measurements of methane flux, through static flux chamber experiments, and analysis of marsh porewater to examine biogeochemical and plant-mediated drivers of methane flux in marshes of Chesapeake Bay. In addition, there is growing interest from the scientific and resource management community in how natural marshes cycle carbon and whether restored marshes show biogeochemical similarities. Therefore, I tested my hypotheses in the natural marshes of Monie Bay, part of the Chesapeake Bay National Estuarine Research Reserve – Maryland, and in restored tidal marshes created with dredged sediments at Poplar Island. Methane emissions offset annual carbon storage at Monie Bay and Poplar Island by 0.7 and 2.1 percent, respectively, based on average values of annual fluxes. However, there remains uncertainty in the accuracy of this estimate given the spatial and temporal variability in my observed fluxes, and the limited sampling frequency and spatial extent of my study. Within such uncertainty lays a justification for continued long-term monitoring of methane emissions in restored and natural marshes of Chesapeake Bay to resolve this important marsh management question.en_US
dc.identifierhttps://doi.org/10.13016/mtp2-lkw2
dc.identifier.urihttp://hdl.handle.net/1903/29637
dc.language.isoenen_US
dc.subject.pqcontrolledBiogeochemistryen_US
dc.subject.pqcontrolledEcologyen_US
dc.titleEVALUATING CARBON SEQUESTRATION POTENTIAL OF NATURAL AND RESTORED TIDAL MARSHES IN CHESAPEAKE BAY THROUGH QUANTIFICATION OF METHANE FLUXES AND IDENTIFICATION OF DRIVERSen_US
dc.typeThesisen_US

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