Representing methane emissions from wet tropical forest soils using microbial functional groups constrained by soil diffusivity

Sihi, Debjani; Xu, Xiaofeng; Salazar Ortiz, Mónica; O'Connell, Christine S.; Silver, Whendee L.; López-Lloreda, Carla; Brenner, Julia M.; Quinn, Ryan K.; Phillips, Jana R.; Newman, Brent D.; Mayes, Melanie A.

doi:https://doi.org/10.5194/bg-18-1769-2021

Articles | Volume 18, issue 5

https://doi.org/10.5194/bg-18-1769-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-1769-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 5

Research article

|

15 Mar 2021

Research article |

| 15 Mar 2021

Representing methane emissions from wet tropical forest soils using microbial functional groups constrained by soil diffusivity

Debjani Sihi, Xiaofeng Xu, Mónica Salazar Ortiz, Christine S. O'Connell, Whendee L. Silver, Carla López-Lloreda, Julia M. Brenner, Ryan K. Quinn, Jana R. Phillips, Brent D. Newman, and Melanie A. Mayes

Supplement

https://doi.org/10.5194/bg-18-1769-2021-supplement

Data sets

Soil chemistry data across a catena in the Luquillo Experimental Forest, Puerto Rico: A Comprehensive Framework for Modeling Emissions from Tropical Soils and Wetlands Sihi, D., López-Lloreda, C., Brenner J. M., Quinn R. K., Phillips J. R., Mayes, M. A. https://doi.org/10.15485/1618870

Porewater data across a catena in the Luquillo Experimental Forest, Puerto Rico: A Comprehensive Framework for Modeling Emissions from Tropical Soils and Wetlands Sihi, D., López-Lloreda, C. Brenner J. M., Quinn R. K., Phillips J. R., Newman B. D., Mayes, M. A. https://doi.org/10.15485/1618869

Soil chamber fluxes (CO2 and CH4) across a catena in the Luquillo Experimental Forest, Puerto Rico: A Comprehensive Framework for Modeling Emissions from Tropical Soils and Wetlands Sihi, D., Salazar-Ortiz, M., Mayes, M. A. https://doi.org/10.15485/1632882

Model code and software

PR-model v1.0 Sihi, D. https://doi.org/10.5281/zenodo.3890562

Download

Article (2391 KB)
Full-text XML

Short summary

Humid tropical soils are important sources and sinks of methane. We used model simulation to understand how different kinds of microbes and observed soil moisture and oxygen dynamics contribute to production and consumption of methane along a wet tropical hillslope during normal and drought conditions. Drought alters the diffusion of oxygen and microbial substrates into and out of soil microsites, resulting in enhanced methane release from the entire hillslope during drought recovery.