NDLI: Net Ecosystem Production and Carbon Greenhouse Gas Fluxes in Three Prairie Wetlands

Content Provider	Springer Nature Link
Author	Bortolotti, Lauren E. St. Louis, Vincent L. Vinebrooke, Rolf D. Wolfe, Alexander P.
Copyright Year	2015
Abstract	In central North America, prairie wetlands provide many important ecosystem services including attenuating floods, improving water quality, and supporting biodiversity. However, over half of these wetlands have been drained for agriculture. Relatively little is known about the functioning of these ecosystems either in their natural state or restored after drainage. We characterized net ecosystem production and carbon greenhouse gas (GHG) fluxes (carbon dioxide [CO2] and methane) in the open-water zones of three prairie wetlands over two ice-free seasons. These wetlands included a natural site and sites restored 3 and 14 years prior to study (hereafter “recently restored” and “older restored”). We also assessed how two techniques for estimating metabolic status, the diel oxygen method (used to measure NEP) and net CO2 fluxes, compared. The diel oxygen method suggested that the restored wetlands were net heterotrophic across years, whereas the natural wetland was net heterotrophic in 1 year and net autotrophic in the other. Similar conclusions arose from quantifying net CO2 fluxes, although this technique proved to be relatively insensitive for understanding metabolic status at a daily temporal scale owing to the influence of geochemical processes on CO2 concentrations. GHG efflux was greatest from the recently restored wetland, followed by the older restored and natural wetlands. Overall, GHG flux rates were high and variable compared with other inland aquatic ecosystems. Although restoration may progressively return wetland functioning to near-natural states, our results highlight the necessity of preventing wetland drainage in the first place to preserve ecosystem functions and services.
Starting Page	411
Ending Page	425
Page Count	15
File Format	PDF
ISSN	14329840
Journal	Ecosystems
Volume Number	19
Issue Number	3
e-ISSN	14350629
Language	English
Publisher	Springer US
Publisher Date	2015-12-21
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	carbon dioxide ecosystem metabolism ecosystem restoration greenhouse gas emissions methane net ecosystem production prairie pothole wetlands Ecology Plant Sciences Zoology Environmental Management Geoecology/Natural Processes Hydrology/Water Resources
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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