Global controls on carbon storage in mangrove soils

André S. Rovai (), Robert R. Twilley, Edward Castañeda-Moya, Pablo Riul, Miguel Cifuentes-Jara, Marilyn Manrow-Villalobos, Paulo A. Horta, José C. Simonassi, Alessandra L. Fonseca and Paulo R. Pagliosa
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André S. Rovai: Louisiana State University
Robert R. Twilley: Louisiana State University
Edward Castañeda-Moya: Louisiana State University
Pablo Riul: Universidade Federal da Paraíba
Miguel Cifuentes-Jara: Centro Agronómico Tropical de Investigación de Enseñanza
Marilyn Manrow-Villalobos: Centro Agronómico Tropical de Investigación de Enseñanza
Paulo A. Horta: Universidade Federal de Santa Catarina
José C. Simonassi: Universidade Federal de Santa Catarina
Alessandra L. Fonseca: Universidade Federal de Santa Catarina
Paulo R. Pagliosa: Universidade Federal de Santa Catarina

Nature Climate Change, 2018, vol. 8, issue 6, 534-538

Abstract: Abstract Global-scale variation in mangrove ecosystem properties has been explained using a conceptual framework linking geomorphological processes to distinct coastal environmental settings (CES) for nearly 50 years. However, these assumptions have not been empirically tested at the global scale. Here, we show that CES account for global variability in mangrove soil C:N:P stoichiometry and soil organic carbon (SOC) stocks. Using this ecogeomorphology framework, we developed a global model that captures variation in mangrove SOC stocks compatible with distinct CES. We show that mangrove SOC stocks have been underestimated by up to 50% (a difference of roughly 200 Mg ha−1) in carbonate settings and overestimated by up to 86% (around 400 Mg ha−1) in deltaic coastlines. Moreover, we provide information for 57 nations that currently lack SOC data, enabling these and other countries to develop or evaluate their blue carbon inventories.

Date: 2018
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DOI: 10.1038/s41558-018-0162-5

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