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| Submitter's Name |
Lisa Gardner |
| Session Name |
Poster Session: Hydrologic, Biogeochemical and Ecological Processes 1 |
| Category |
Hydrologic, biogeochemical and ecological processes |
| Poster Number |
213 |
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| Author(s) |
Lisa M. Gardner, University of Florida |
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K. R. Reddy,
University of Florida |
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Todd Z. Osborne, University of Florida |
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Carbon Pool Dynamics in a Phosphorus-Impacted Wetland (Everglades, FL) |
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Wetlands function as a major sink of carbon, but also release C through microbial respiration. Human disturbances, such as hydrologic changes and nutrient additions, often increase the rate at which wetland C is released to the atmosphere. In water conservation area 2A (WCA-2A), a managed hydrologic unit within the Everglades, a historically P-limited wetland is receiving high concentrations of P. The goal of this study was to determine if anaerobic respiration and the character of the C pools differed between P-enriched areas and unenriched areas of the wetland. Results indicate unenriched soils (0-10cm) store the most TC (ยต=3341g C m-2) and organic C represents >97% of the TC at all sites. Anaerobic CO2 and CH4 production was significantly greater in the un-enriched detritus than all other sites (p |
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