2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/27/2021 | 2:00 PM - 3:30 PM | CONTRIBUTION OF MICROBIAL ASSEMBLAGES TO NITROGEN CYCLING IN WETAND RESERVE PROGRAM EASEMENTS | Virtual Platform
CONTRIBUTION OF MICROBIAL ASSEMBLAGES TO NITROGEN CYCLING IN WETAND RESERVE PROGRAM EASEMENTS
Recent work has suggested that microbial assemblages within wetland ecosystems may serve as bioindicators for the restoration of wetland functions, as microbes make direct contributions to nutrient retention, cycling, and redox potential within soil. Our project seeks to understand patterns of microbial assemblage structure and function across federally restored agricultural easements as part of the USDA Natural Resources Conservation Service’s Wetland Reserve Program in western Tennessee and western Kentucky, within the greater Mississippi Alluvial Valley. Our lab has developed a novel methodology for collecting microbial assemblages from soil cores, allowing for fine-scale spatial analysis within the organic layer of wetland soils. The purpose of this study was to uncover broad to fine-scale spatial patterns and determine the contribution of microbial assemblages to nitrogen cycling within and among wetlands by developing diversity profiles from high-throughput DNA sequencing data, measurements of soil geochemistry, functional N cycling genes, and nutrient flux rates from soil core incubations. This work aims to address temporal and spatial dynamics of restored wetland soils in a multidisciplinary context to better link microbial processes with whole easement nutrient retention and restoring wetland ecological services.
- Restoration
- Nutrient cycling
- Ecosystem functioning
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Presenters/Authors
Nicholas Alexander
(), Middle Tennessee State University, n.reed.alexander@gmail.com;
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Donald Walker
(), Middle Tennessee State University, dmwalker.dmw@gmail.com;
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Justin Murdock
(), Tennessee Tech University, jnmurdock@tntech.edu;
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Robert Brown
(), Tennessee Tech University, rsbrown43@tntech.edu;
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Shrijana Duwadi
(), Tennessee Tech University, sduwadi42@tntech.edu;
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Spencer Womble
(), Tennessee Tech University, sgwomble42@tntech.edu;
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