Methane emissions from tree stems: a new frontier in the global carbon cycle

Barba, Josep; Bradford, Mark A.; Brewer, Paul E.; Bruhn, Dan; Covey, Kristofer; van Haren, Joost; Megonigal, J. Patrick; Mikkelsen, Teis Nørgaard; Pangala, Sunitha R.; Pihlatie, Mari; Poulter, Ben; Rivas-Ubach, Albert; Schadt, Christopher Warren; Terazawa, Kazuhiko; Warner, Daniel L.; Zhang, Zhen; Vargas, Rodrigo

doi:10.1111/nph.15582

Title: Methane emissions from tree stems: a new frontier in the global carbon cycle

Journal Article · 04 November 2018 · New Phytologist

DOI: https://doi.org/10.1111/nph.15582 · OSTI ID:1484115

Barba, Josep ^[1]; Bradford, Mark A. ^[2]; Brewer, Paul E. ^[3]; Bruhn, Dan ^[4]; Covey, Kristofer ^[5]; van Haren, Joost ^[6]; Megonigal, J. Patrick ^[3]; Mikkelsen, Teis Nørgaard ^[7]; Pangala, Sunitha R. ^[8]; Pihlatie, Mari ^[9]; Poulter, Ben ^[10]; Rivas-Ubach, Albert ^[11];

^[12]; Terazawa, Kazuhiko ^[13]; Warner, Daniel L. ^[1]; Zhang, Zhen ^[14]; Vargas, Rodrigo ^[1]

Univ. of Delaware, Newark, DE (United States)
Yale Univ., New Haven, CT (United States)
Smithsonian Environmental Research Center, Edgewater, MD (United States)
Aalborg Univ. (Denmark)
Yale Univ., New Haven, CT (United States); Skidmore College, Saratoga Springs, NY (United States)
Univ. of Arizona, Tucson, AZ (United States)
Technical Univ. of Denmark (Denmark)
Lancaster Univ., Lancaster (United Kingdom)
Univ. of Helsinki (Finland)
NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Tokyo Univ. of Agriculture (Japan)
Univ. of Maryland, College Park, MD (United States)

Tree stems from wetland, floodplain and upland forests can produce and emit methane (CH₄). Tree CH₄ stem emissions have high spatial and temporal variability, but there is no consensus on the biophysical mechanisms that drive stem CH₄ production and emissions. Here, we summarize up to 30 opportunities and challenges for stem CH₄ emissions research, which when addressed will improve estimates of magnitudes, patterns, drivers and trace the potential origin of CH₄ emissions. We identified the need (i) for both long–term high frequency measurements of stem CH₄ emissions to understand the fine scale processes, alongside rapid large–scale measurements designed to understand variability across individuals, species and ecosystems; (ii) to identify microorganisms and biogeochemical pathways associated with CH₄ production; and (iii) to develop a mechanistic model including passive and active transport of CH₄ from the soil–tree–atmosphere continuum. Addressing these challenges would help to constrain magnitudes and patterns of CH₄ emissions, and would allow for the integration of pathways and mechanisms of CH₄ production and emissions into process–based models. As a result, these advances will facilitate upscaling of stem CH₄ emissions to the ecosystem level and quantify the role of stem CH₄ emissions for the local–to–global CH₄ budget.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1484115

Alternate ID(s):: OSTI ID: 1506688; OSTI ID: 1487299

Journal Information:: New Phytologist, Journal Name: New Phytologist Journal Issue: none Vol. in press; ISSN 0028-646X

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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methane emissions
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