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Hydroperiod and Water Level Effects on Greenhouse Gas Exchanges in Great Lakes Coastal Wetlands

Ann Arbor, Michigan, USA
Project Description

Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are key radiatively active greenhouse gases (hereafter GHGs) with variable global warming potential. Wetlands play a vital role in regulating global GHG emission through plant assimilation and soil sequestration of CO2 as well as microbial production of CH4 and N2O. These gas dynamics are greatly affected by seasonal water-level fluctuations that modulate plant productivity and dictate the location and extent of oxic and anoxic zones, which regulate soil microbial processes including denitrification and mineralization of organic carbon in detritus. Modeling results suggest that high water level lowers net CO2 emissions by promoting C storage while seasonally fluctuating water levels increased N2O production. High N-loading and high residence time of water consistently lowered net CO2 emissions but increased N2O production.

Year
2020
Project Status
Past Project
Students Involved

Ye Yuan, MS (CE,EI)

Final Report
Link to Report
Specializations
Ecosystem Science and Management
Geospatial Data Sciences

I'M READY TO APPLYI WANT TO LEARN MORE

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University of Michigan School for Environment and Sustainability
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Ann Arbor, MI 48109
(734) 764-6453
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