2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 2:00 PM - 2:15 PM | INTEGRATING HYDROLOGY, PLANT COMMUNITIES, AND MICROBIAL COMMUNITIES TO ENHANCE MITIGATION OF GREENHOUSE GAS FLUXES IN WETLANDS | 301B
INTEGRATING HYDROLOGY, PLANT COMMUNITIES, AND MICROBIAL COMMUNITIES TO ENHANCE MITIGATION OF GREENHOUSE GAS FLUXES IN WETLANDS
To better manage wetland ecosystem services for carbon sequestration, nitrogen removal, and reduced greenhouse gas (GHG) production, a deeper understanding of management impacts on microbial communities facilitating those processes is needed. These microbially mediated biogeochemical processes are dependent on soil hydrology and redox status, which determines electron acceptors available for respiration. Since plants can transport gas to and from soils, measuring plant influences on GHG fluxes is also critically important. Using a mesocosm design, we manipulated duration and hydrologic condition (i.e. stable dry, stable flooding, and interim) to induce soil redox changes. One mesocosm represents a wetland ecosystem, where half of the mesocosm included plants and the other half was absent of plants. We characterized total bacterial communities using targeted amplicon sequencing, soil physicochemical properties, redox potential, and GHG rates. Microbial community functional response to hydrology is more dynamic across a wider redox gradient and is also possibly buffered by the presence of plants. By integrating plant, microbial, and soil physicochemical responses to hydrology, we quantified how contemporary hydrologic change on wetland microbes relates to greenhouse gas emissions.
- C04 Microbial Ecology
- C10 Biogeochemistry
- C09 Wetland Ecology
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Presenters/Authors
Regina Bledsoe
(), East Carolina University, bledsoer15@students.ecu.edu;
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Ariane Peralta
(), East Carolina University, peraltaa@ecu.edu;
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