Andre S. Rovai Maria Fernanda Adame Janine B. Adams Jose Alvarez-Rogel William E.N. Austin Kim Beasy Francesco Boscutti Michael E. Bottcher Tjeerd J. Bouma Richard H. Bulmer Annette Burden Shannon A. Burke Saritta Camacho Doongar R. Chaudhary Gail L. Chmura Margareth Copertino Grace M. Cott Christopher Craft John W. Day Carmen B. de los Santos Lionel Denis Weixin Ding Joanna C. Ellison Carolyn J. Ewers Lewis Luise Giani Maria Gispert Swanne Gontharet Jose A. Gonzalez-Perez M. Nazaret Gonzalez-Alcaraz Connor Gorham Anna Elizabeth L. Graversen Anthony Grey Roberta Guerra Qiang He James R. Holmquist Alice R. Jones Jose A. Juanes Brian P. Kelleher Karen E. Kohfeld Dorte Krause-Jensen Anna Lafratta Paul S. Lavery Edward A. Laws Carmen Leiva-Duenas Pei Sun Loh Catherine E. Lovelock Carolyn J. Lundquist Peter I. Macreadie Ines Mazarrasa J. Patrick Megonigal Joao M. Neto Juliana Nogueira Michael Osland Jordi F. Pages Nipuni Perera Eva-Maria Pfeiffer Thomas Pollmann Jacqueline L. Raw Maria Recio Ana Carolina Ruiz-Fernández Sophie K. Russell John M. Rybczyk Marek Sammul Christian Sanders Rui Santos Oscar Serrano Matthias B. Siewert Craig Smeaton Zhaoliang Song Carmen Trasar-Cepeda Robert R. Twilley Marijn Van de Broek Stefano Vitti Livia Vittori Antisari Baptiste Voltz Christy N. Wails Raymond D. Ward Melissa Warden Jaxine Wolfe Renmin Yang Sebastian Zubrzycki Emily Landis Lindsey Smart Mark Spalding Thomas A. Worthington Tania L. Maxwell 2023 <div id="Abs1-section" class="c-article-section"><div id="Abs1-content" class="c-article-section__content"><p>Tidal marshes store large amounts of organic carbon in their soils. Field data quantifying soil organic carbon (SOC) stocks provide an important resource for researchers, natural resource managers, and policy-makers working towards the protection, restoration, and valuation of these ecosystems. We collated a global dataset of tidal marsh soil organic carbon (MarSOC) from 99 studies that includes location, soil depth, site name, dry bulk density, SOC, and/or soil organic matter (SOM). The MarSOC dataset includes 17,454 data points from 2,329 unique locations, and 29 countries. We generated a general transfer function for the conversion of SOM to SOC. Using this data we estimated a median (±&nbsp;median absolute deviation) value of 79.2 ± 38.1 Mg SOC ha⁻¹<span>&nbsp;</span>in the top 30 cm and 231 ± 134 Mg SOC ha⁻¹<span>&nbsp;</span>in the top 1 m of tidal marsh soils globally. This data can serve as a basis for future work, and may contribute to incorporation of tidal marsh ecosystems into climate change mitigation and adaptation strategies and policies.</p></div></div> application/pdf 10.1038/s41597-023-02633-x en Springer Nature Global dataset of soil organic carbon in tidal marshes article