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dc.contributor.authorHolmquist, James R.  Concept link
dc.contributor.authorWindham-Myers, Lisamarie  Concept link
dc.contributor.authorBliss, Norman B.  Concept link
dc.contributor.authorCrooks, Stephen  Concept link
dc.contributor.authorMorris, James T.  Concept link
dc.contributor.authorMegonigal, J. Patrick  Concept link
dc.contributor.authorTroxler, Tiffany G.  Concept link
dc.contributor.authorWeller, Donald  Concept link
dc.contributor.authorCallaway, John  Concept link
dc.contributor.authorDrexler, Judith  Concept link
dc.contributor.authorFerner, Matthew C.  Concept link
dc.contributor.authorGonneea, Meagan E.  Concept link
dc.contributor.authorKroeger, Kevin D.  Concept link
dc.contributor.authorSchile-Beers, Lisa  Concept link
dc.contributor.authorWoo, Isa  Concept link
dc.contributor.authorBuffington, Kevin  Concept link
dc.contributor.authorBreithaupt, Joshua  Concept link
dc.contributor.authorBoyd, Brandon M.  Concept link
dc.contributor.authorBrown, Lauren N.  Concept link
dc.contributor.authorDix, Nicole  Concept link
dc.contributor.authorHice, Lyndie  Concept link
dc.contributor.authorHorton, Benjamin P.  Concept link
dc.contributor.authorMacDonald, Glen M.  Concept link
dc.contributor.authorMoyer, Ryan P.  Concept link
dc.contributor.authorReay, William  Concept link
dc.contributor.authorShaw, Timothy  Concept link
dc.contributor.authorSmith, Erik  Concept link
dc.contributor.authorSmoak, Joseph M.  Concept link
dc.contributor.authorSommerfield, Christopher K.  Concept link
dc.contributor.authorThorne, Karen  Concept link
dc.contributor.authorVelinsky, David  Concept link
dc.contributor.authorWatson, Elizabeth  Concept link
dc.contributor.authorWilson Grimes, Kristin  Concept link
dc.contributor.authorWoodrey, Mark  Concept link
dc.identifier.citationScientific Reports 8 (2018): 9478en_US
dc.description© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Reports 8 (2018): 9478, doi:10.1038/s41598-018-26948-7.en_US
dc.description.abstractTidal wetlands produce long-term soil organic carbon (C) stocks. Thus for carbon accounting purposes, we need accurate and precise information on the magnitude and spatial distribution of those stocks. We assembled and analyzed an unprecedented soil core dataset, and tested three strategies for mapping carbon stocks: applying the average value from the synthesis to mapped tidal wetlands, applying models fit using empirical data and applied using soil, vegetation and salinity maps, and relying on independently generated soil carbon maps. Soil carbon stocks were far lower on average and varied less spatially and with depth than stocks calculated from available soils maps. Further, variation in carbon density was not well-predicted based on climate, salinity, vegetation, or soil classes. Instead, the assembled dataset showed that carbon density across the conterminous united states (CONUS) was normally distributed, with a predictable range of observations. We identified the simplest strategy, applying mean carbon density (27.0 kg C m−3), as the best performing strategy, and conservatively estimated that the top meter of CONUS tidal wetland soil contains 0.72 petagrams C. This strategy could provide standardization in CONUS tidal carbon accounting until such a time as modeling and mapping advancements can quantitatively improve accuracy and precision.en_US
dc.description.sponsorshipSynthesis efforts were funded by NASA Carbon Monitoring System (CMS; NNH14AY67I), USGS LandCarbon and the Smithsonian Institution. J.R.H. was additionally supported by the NSF-funded Coastal Carbon Research Coordination Network while completing this manuscript (DEB-1655622). J.M.S. coring efforts were funded by NSF (EAR-1204079). B.P.H. coring efforts were funded by Earth Observatory (Publication Number 197).en_US
dc.publisherNature Publishing Groupen_US
dc.rightsAttribution 4.0 International*
dc.titleAccuracy and precision of tidal wetland soil carbon mapping in the conterminous United Statesen_US

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