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dc.contributor.authorKroeger, Kevin D.  Concept link
dc.contributor.authorCrooks, Stephen  Concept link
dc.contributor.authorMoseman-Valtierra, Serena M.  Concept link
dc.contributor.authorTang, Jianwu  Concept link
dc.identifier.citationScientific Reports 7 (2017): 11914en_US
dc.description© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Reports 7 (2017): 11914, doi::10.1038/s41598-017-12138-4.en_US
dc.description.abstractCoastal wetlands are sites of rapid carbon (C) sequestration and contain large soil C stocks. Thus, there is increasing interest in those ecosystems as sites for anthropogenic greenhouse gas emission offset projects (sometimes referred to as “Blue Carbon”), through preservation of existing C stocks or creation of new wetlands to increase future sequestration. Here we show that in the globallywidespread occurrence of diked, impounded, drained and tidally-restricted salt marshes, substantial methane (CH4) and CO2 emission reductions can be achieved through restoration of disconnected saline tidal flows. Modeled climatic forcing indicates that tidal restoration to reduce emissions has a much greater impact per unit area than wetland creation or conservation to enhance sequestration. Given that GHG emissions in tidally-restricted, degraded wetlands are caused by human activity, they are anthropogenic emissions, and reducing them will have an effect on climate that is equivalent to reduced emission of an equal quantity of fossil fuel GHG. Thus, as a landuse-based climate change intervention, reducing CH4 emissions is an entirely distinct concept from biological C sequestration projects to enhance C storage in forest or wetland biomass or soil, and will not suffer from the non-permanence risk that stored C will be returned to the atmosphere.en_US
dc.description.sponsorshipResearch supported by the USGS Coastal & Marine Geology Program, USGS Land Carbon Program, and NOAA Science Collaborative grant #NA09NOS4190153.en_US
dc.publisherNature Publishing Groupen_US
dc.rightsAttribution 4.0 International*
dc.titleRestoring tides to reduce methane emissions in impounded wetlands : a new and potent Blue Carbon climate change interventionen_US

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International