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dc.contributor.authorMerbold, L.
dc.contributor.authorKutsch, Werner L.
dc.contributor.authorKolle, O.
dc.contributor.authorZimov, S. A.
dc.contributor.authorCorradi, C.
dc.contributor.authorStoy, Paul C.
dc.contributor.authorSchulze, E.-D.
dc.identifier.citationMerbold, L.,W. L. Kutsch, O. Kolle, S. A. Zimov, C. Corradi, P. C. Stoy, E-D. Schulze. “Artificial Drainage and Associated Carbon Fluxes (CO2/CH4) in a Tundra Ecosystem.” Global Change Biology 15, no. 11 (November 2009): 2599–2614. doi:10.1111/j.1365-2486.2009.01962.x.en_US
dc.description.abstractEcosystem flux measurements using the eddy covariance (EC) technique were undertaken in 4 subsequent years during summer for a total of 562 days in an arctic wet tundra ecosystem, located near Cherskii, Far‐Eastern Federal District, Russia. Methane (CH4) emissions were measured using permanent chambers. The experimental field is characterized by late thawing of permafrost soils in June and periodic spring floods. A stagnant water table below the grass canopy is fed by melting of the active layer of permafrost and by flood water. Following 3 years of EC measurements, the site was drained by building a 3 m wide drainage channel surrounding the EC tower to examine possible future effects of global change on the tundra tussock ecosystem. Cumulative summertime net carbon fluxes before experimental alteration were estimated to be about +15 g C m−2 (i.e. an ecosystem C loss) and +8 g C m−2 after draining the study site. When taking CH4 as another important greenhouse gas into account and considering the global warming potential (GWP) of CH4 vs. CO2, the ecosystem had a positive GWP during all summers. However CH4 emissions after drainage decreased significantly and therefore the carbon related greenhouse gas flux was much smaller than beforehand (475 ± 253 g C‐CO2‐e m−2 before drainage in 2003 vs. 23 ± 26 g C‐CO2‐e m−2 after drainage in 2005).en_US
dc.rightsThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).en_US
dc.titleArtificial drainage and associated carbon fluxes (CO2/CH4) in tundra ecosystemsen_US
mus.citation.journaltitleGlobal Change Biologyen_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US

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