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Greenhouse Gas Emissions Over A Tidal Cycle In A Freshwater Wetland, Joseph C. Morina, Rima B. Franklin
Greenhouse Gas Emissions Over A Tidal Cycle In A Freshwater Wetland, Joseph C. Morina, Rima B. Franklin
Rice Rivers Center Research Symposium
Tidal freshwater wetlands are located at the interface of non-tidal freshwater riverine systems and estuarine tidal systems. These habitats experience freshwater tides, creating unique redoximorphic soil characteristics while simultaneously presenting an opportunity for hydrologic nutrient transport into the system. Because of this periodic flooding and draining, tidal freshwater wetlands are systems of intense biogeochemical transformations, which are microbially mediated. Several microbial transformations (e.g., methanogenesis, incomplete denitrification, and nitrification) result in the production of greenhouse gases (CO2, CH4, and N2O) at globally-significant levels. For example, wetlands are one of the greatest sources of methane on Earth, accounting for 20-33% of the …