<i>Sphagnum</i> and herbaceous net ecosystem exchanges in a Pyrenean peatland: a long-term study using the ISBA model

Garisoain, Raphael; Delire, Christine; Decharme, Bertrand; Gandois, Laure

doi:10.5194/bg-23-3407-2026

Articles | Volume 23, issue 10

https://doi.org/10.5194/bg-23-3407-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-23-3407-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 10

Research article

|

20 May 2026

Research article |

| 20 May 2026

Sphagnum and herbaceous net ecosystem exchanges in a Pyrenean peatland: a long-term study using the ISBA model

Raphael Garisoain, Christine Delire, Bertrand Decharme, and Laure Gandois

Data sets

Sphagnum and Herbaceous Net Ecosystem Exchanges in a Pyrenean Peatland: A Long-Term Study Using the ISBA Model [Data set] Raphael Garisoain et al. https://doi.org/10.5281/zenodo.16984992

The S2M meteorological and snow cover reanalysis in the French mountainous areas (1958-present) Matthieu Vernay et al. https://doi.org/10.25326/37#v2020.2

Model code and software

Sphagnum and Herbaceous Net Ecosystem Exchanges in a Pyrenean Peatland: A Long-Term Study Using the ISBA Model [Data set] Raphael Garisoain et al. https://doi.org/10.5281/zenodo.16984992

Short summary

Peatlands store vast amounts of carbon, helping to slow climate change. We studied a mountain peatland in the Pyrenees to understand how warming and drought affect its ability to retain carbon. Using land surface modeling and field data from the past 64 years, we found that higher temperatures increase plant growth, but frequent and intense droughts cause large carbon losses, threatening peatlands' role as long-term carbon sinks.