EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/27/2021 | 2:00 PM - 3:30 PM | SOIL NUTRIENT RETENTION ACROSS RESTORED FLOOPLAIN WETLAND HABITATS | Virtual Platform
SOIL NUTRIENT RETENTION ACROSS RESTORED FLOOPLAIN WETLAND HABITATS
Floodplain wetlands have been historically degraded by agricultural practices. The U.S. Department of Agriculture’s Wetlands Reserve Program (WRP) transitions cropland back to wetlands to restore ecosystem structure and function. We evaluated how WRP restoration practices influence nutrient retention on 14 restored wetlands in western Tennessee and Kentucky during the summers of 2019 and 2020. Thirty soil cores were collected from dominant habitat types and inundated with elevated nitrogen and phosphorus water using a flow-through system to estimate maximum uptake potentials. Nitrogen and phosphorus uptake, and denitrification rates were measured over 48-h. A linear mixed effects model was used to compare nutrient removal rates with habitat type and soil properties. Preliminary data suggest that soil oxygen demand, soil moisture, and soil organic matter have the strongest influence on nutrient uptake and denitrification potential. Natural regeneration habitats had greater phosphate retention and denitrification potential relative to shallow water and tree planting habitats. Phosphate uptake and denitrification rates appear to be highest after 24 h and 48 h of inundation, respectively. These preliminary results suggest that prolonging inundation and allowing for natural succession to occur may maximize nutrient retention in these wetlands.
- Biogeochemistry
- Management
- Restoration
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Spencer Womble
(), Tennessee Tech University, sgwomble42@tntech.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Justin Murdock
(), Tennessee Tech University, jnmurdock@tntech.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Robert Brown
(), Tennessee Tech University, rsbrown43@tntech.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Shrijana Duwadi
(), Tennessee Tech University, sduwadi42@tntech.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -