Articles | Volume 23, issue 16
https://doi.org/10.5194/bg-23-5653-2026
https://doi.org/10.5194/bg-23-5653-2026
Research article
 | 
17 Aug 2026
Research article |  | 17 Aug 2026

Long-term patterns of peat accumulation and organic matter decomposition in Costa Rican peatlands

Hannah Mitchell, Julie Loisel, Jacklyn Rivera Wong, Alessandra C. Leri, and Mia Allison

Related authors

C-PEAT’s Global Peatland Carbon Database (v.2025)
Julie Loisel, Angela Gallego-Sala, Daniela Ransby, Emily Rabel, Cornelia Behrens, Stefanie Schumacher, Kathe Todd-Brown, Vaasuki Marupaka, and the C-PEAT Working Group Members
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2026-222,https://doi.org/10.5194/essd-2026-222, 2026
Revised manuscript accepted for ESSD
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Cited articles

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Artz, R. R. E., Chapman, S. J., Jean Robertson, A. H., Potts, J. M., Laggoun-Défarge, F., Gogo, S., Comont, L., Disnar, J.-R., and Francez, A.-J.: FTIR spectroscopy can be used as a screening tool for organic matter quality in regenerating cutover peatlands, Soil Biol. Biochem., 40, 515–527, https://doi.org/10.1016/j.soilbio.2007.09.019, 2008. 
ASTM: Standard Test Methods for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils, ASTM International, West Conshohocken, PA, https://doi.org/10.1520/D2974-20E01, 1987. 
Baird, A. J., Low, R., Young, D., Swindles, G. T., Lopez, O. R., and Page, S.: High permeability explains the vulnerability of the carbon store in drained tropical peatlands, Geophys. Res. Lett., 44, 1333–1339, https://doi.org/10.1002/2016GL072245, 2017. 
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The peatlands of Central America are vastly understudied, despite their role as long-term carbon stores. This study presents 9 new peat-core datasets from different landscapes found across Costa Rica. Our approach includes multiple paleoenvironmental tools that provide peatland ages, peat-soil geochemical characteristics, and ecological succession histories. The total peat carbon store in Costa Rica is estimated at 0.15 gigatonnes and the averaged peatland carbon stock is 1080 Mg C/ha. 
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