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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Mar 2021
Research article |
| 15 Mar 2021
| 15 Mar 2021
Representing methane emissions from wet tropical forest soils using microbial functional groups constrained by soil diffusivity
Debjani Sihi
Climate Change Science Institute and Environmental Sciences Division,
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Department of Environmental Sciences, Emory
University, Atlanta, GA 30322, USA
Xiaofeng Xu
Department of Biology, San Diego State University, San Diego, CA
92182-4614, USA
Mónica Salazar Ortiz
Institute of Plant Science and Microbiology, University of
Hamburg, 20148 Hamburg, Germany
Christine S. O'Connell
Department of Environmental Science, Policy and Management, University
of California, Berkeley, CA 94720-3114, USA
Department of Environmental Studies, Macalester
College, St. Paul, MN 55105-1899, USA
Whendee L. Silver
Department of Environmental Science, Policy and Management, University
of California, Berkeley, CA 94720-3114, USA
Carla López-Lloreda
Department of Natural Resources and the Environment, University of New
Hampshire, Durham, NH 03824, USA
Julia M. Brenner
Climate Change Science Institute and Environmental Sciences Division,
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
currently at: Research and Development Department for Jarðgerðarfélagið, 101 Reykjavík, Iceland
Ryan K. Quinn
Climate Change Science Institute and Environmental Sciences Division,
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Department of Biology, Boston University, Boston, MA 02215, USA
Jana R. Phillips
Climate Change Science Institute and Environmental Sciences Division,
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Brent D. Newman
Earth and Environmental Sciences Division, Los Alamos National
Laboratory, Los Alamos, NM 87545, USA
Climate Change Science Institute and Environmental Sciences Division,
Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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The Sphagnum mosses are the important species of a wetland ecosystem. To better represent the peatland ecosystem, we introduced the moss species to the land model component (ELM) of the Energy Exascale Earth System Model (E3SM) by developing water content dynamics and nonvascular photosynthetic processes for moss. We tested the model against field observations and used the model to make projections of the site's carbon cycle under warming and atmospheric CO2 concentration scenarios.
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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.
Humid tropical soils are important sources and sinks of methane. We used model simulation to...
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