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Methane and Nitrous Oxide Fluxes from Water, Plants, and Soils of a Constructed Treatment Wetland in Phoenix, AZ


Abstract Constructed treatment wetlands (CTW) have been a cost-efficient technological solution to treat different types of wastewater but may also be sources of emitters of methane (CH4) and nitrous oxide (N2O). Thus, my objective for this dissertation was to investigate CH4 and N2O fluxes via multiple pathways from the Tres Rios CTW located in Phoenix, AZ, USA. I measured gas fluxes from the CTW along a whole-system gradient (from inflow to outflow) and a within-marsh gradient (shoreline, middle, and open water sites). I found higher diffusive CH4 release in the summer compared to spring and winter seasons. Along the whole-system gradient, I found greater CH4 and N2O emission fluxes near the inflow compared to near the outflow. Within the vegetate... (more)
Created Date 2017
Contributor Ramos, Jorge (Author) / Childers, Daniel L (Advisor) / Grimm, Nancy B (Committee member) / Sala, Osvaldo E (Committee member) / Vivoni, Enrique R (Committee member) / Arizona State University (Publisher)
Subject Ecology / Environmental science / Soil sciences / constructed wetlands / ecosystem ecology / greenhouse gases / hdyroperiod / wetlands
Type Doctoral Dissertation
Extent 150 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Biology 2017
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis