2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/07/2017 | 9:00 AM - 9:15 AM | DENITRIFICATION HOTSPOTS IN ACCIDENTAL URBAN WETLANDS IN PHOENIX, ARIZONA | 302A
DENITRIFICATION HOTSPOTS IN ACCIDENTAL URBAN WETLANDS IN PHOENIX, ARIZONA
In wetlands, denitrification is an ecosystem process that permanently removes reactive nitrogen from systems. Much research on denitrification has occurred in non-urban or highly managed urban wetlands. However, in urban landscapes nitrogen-rich water is often discharged into areas not designed or managed to reduce nitrogen loads. “Accidental” wetlands resulting from these discharges have the capacity to remove nitrate, but little known about what drives where hotspots of denitrification occur in these systems. We measured potential denitrification on soils from nine accidental wetlands forming at storm drain outfalls in Phoenix, AZ. Denitrification hotspots were defined as data within the fourth quartile of the data distribution. Soil moisture was the best predictor of hotspots in the study wetlands. Further, denitrification hotspots were more likely to occur under patches of Ludwigia peploides and at wetlands that remained inundated for a greater proportion of the year. There was no seasonal variability in when hotspots were more likely to occur. These results suggest that promoting particular hydrologic regimes and vegetation growth could increase the capacity of accidental wetlands to remove excess nitrate via denitrification.
- C09 Wetland Ecology
- C10 Biogeochemistry
- C08 Urban Ecology & C16 Restoration Ecology
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
Amanda Suchy
(), City University of New York, suchya@caryinstitute.org;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Monica Palta
(), Pace University, mpalta@asu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Daniel Childers
(), Arizona State University, dan.childers@asu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -