NDLI: Greenhouse gas emissions and carbon sequestration potential in restored wetlands of the Canadian prairie pothole region

Content Provider	Springer Nature Link
Author	Badiou, Pascal McDougal, Rhonda Penck, Dan Clark, Bob
Copyright Year	2011
Abstract	North American prairie pothole wetlands are known to be important carbon stores. As a result there is interest in using wetland restoration and conservation programs to mitigate the effects of increasing greenhouse gas concentration in the atmosphere. However, the same conditions which cause these systems to accumulate organic carbon also produce the conditions under which methanogenesis can occur. As a result prairie pothole wetlands are potential hotspots for methane emissions. We examined change in soil organic carbon density as well as emissions of methane and nitrous oxide in newly restored, long-term restored, and reference wetlands across the Canadian prairies to determine the net GHG mitigation potential associated with wetland restoration. Our results indicate that methane emissions from seasonal, semi-permanent, and permanent prairie pothole wetlands are quite high while nitrous oxide emissions from these sites are fairly low. Increases in soil organic carbon between newly restored and long-term restored wetlands supports the conclusion that restored wetlands sequester organic carbon. Assuming a sequestration duration of 33 years and a return to historical SOC densities we estimate a mean annual sequestration rate for restored wetlands of 2.7 Mg C ha$^{−1}$year$^{−1}$ or 9.9 Mg CO$_{2}$ eq. ha$^{−1}$ year$^{−1}$. Even after accounting for increased CH$_{4}$ emissions associated with restoration our research indicates that wetland restoration would sequester approximately 3.25 Mg CO$_{2}$ eq. ha$^{−1}$year$^{−1}$. This research indicates that widescale restoration of seasonal, semi-permanent, and permanent wetlands in the Canadian prairies could help mitigate GHG emissions in the near term until a more viable long-term solution to increasing atmospheric concentrations of GHGs can be found.
Starting Page	237
Ending Page	256
Page Count	20
File Format	PDF
ISSN	09234861
Journal	Wetlands Ecology and Management
Volume Number	19
Issue Number	3
e-ISSN	15729834
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-03-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon sequestration Greenhouse gas emissions Methane Prairie pothole wetlands Evolutionary Biology Ecology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics Management, Monitoring, Policy and Law

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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