Iron’s role in soil organic carbon (de)stabilization in mangroves under land use change

Francisco Ruiz (), Angelo Fraga Bernardino, Hermano Melo Queiroz, Xosé Luis Otero, Cornelia Rumpel and Tiago Osório Ferreira ()
Additional contact information
Francisco Ruiz: “Luiz de Queiroz” College of Agriculture/University of São Paulo (ESALQ/USP)
Angelo Fraga Bernardino: Federal University of Espírito Santo
Hermano Melo Queiroz: Cidade Universitária
Xosé Luis Otero: Faculty of Biology, University of Santiago de Compostela – USC
Cornelia Rumpel: (iEES Paris, UMR Sorbonne Université, CNRS, INRAE, UPEC, IRD)
Tiago Osório Ferreira: “Luiz de Queiroz” College of Agriculture/University of São Paulo (ESALQ/USP)

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Mangroves are coastal hotspots for carbon storage and yet face multiple threats from anthropogenic activities. Here we explore the role of iron-mediated organomineral interactions (FeOMIs) in soil organic carbon (SOC) stabilization and their sensitivity to land use change (LUC) in Amazonian mangroves. We show that Fe oxides protect more labile SOC fractions, which would otherwise be vulnerable to biological degradation, with poorly crystalline Fe oxides being the most effective phase for SOC retention. Despite the fragile equilibrium of FeOMI under dynamic redox conditions in mangroves, this balance sustains approximately 8% of total SOC. The studied LUC scenario led to massive loss of FeOMIs as less crystalline phases were either degraded or transformed into more crystalline ones, losing the efficiency in retaining SOC. The conversion of mangroves to pastures and shrimp ponds, which are pervasive globally, triggers important biogeochemical changes, with major implications for the carbon sequestration potential of mangrove soils.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-54447-z Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54447-z

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-024-54447-z

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().