[B-BC02] Methane in terrestrial and aquatic ecosystems: from microbes to the atmosphere

Fri. May 26, 2023 3:30 PM - 4:45 PM 103 (International Conference Hall, Makuhari Messe)

convener:Daniel EPRON(Kyoto University), Susumu Asakawa(Nagoya University), Prabir Patra(Research Institute for Global Change, JAMSTEC), Ayaka Sakabe(Kyoto University), Chairperson:Daniel EPRON(Kyoto University)

Methane is an important anthropogenic greenhouse gas. The rise of atmospheric CH4 concentration has accelerated these last 10 years, challenging our ability to meet the goal of the Paris agreement to limit climate warming to less than 2 degrees, and leading to the launch of the Global Methane Pledge during the COP26 in 2021. There is still a large gap between bottom-up and top-down estimates of the global CH4 budget, with natural emissions being recognized as the greatest source of uncertainty: clarifying the role of terrestrial ecosystems in its balance is essential for understanding and predicting global warming.
The purpose of the session is to bring together scientists working on methanogenic and methanotrophic microorganisms and communities, measuring methane fluxes from soil, vegetation and at the ecosystem scale, and modelling the methane transport and methane budget at different spatial scales to enhance our understanding of methane sources and sinks, and their responses to changing environmental conditions, in terrestrial and aquatic ecosystems, including but not limited to forests, grasslands, wetlands, freshwater bodies, mangroves and other coastal areas and agricultural lands.

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3:30 PM - 3:45 PM

[BBC02-01] Tropical trees and methane exchange: How trees help solve problems in regional and global methane budgets.

★Invited Papers

*Vincent Gauci¹ (1.School of Geography, Earth and Environmental Sciences, University of Birmingham, UK)

3:45 PM - 4:00 PM

[BBC02-02] Shoot-level methane emissions from Scots pine trees: New insights and technical advances

*Salla A. M. Tenhovirta^1,2, Lukas Kohl^1,2,3, Markku Koskinen^1,2, Tatu Polvinen^1,2, Mari Pihlatie^1,2,4 (1.Environmental Soil Science, Department of Agricultural Sciences, University of Helsinki, Finland, 2.Institute for Atmospheric and Earth System Research / Forest Sciences, University of Helsinki, Finland, 3.Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland, 4.Viikki Plant Science Centre (ViPS), University of Helsinki, Finland)

4:00 PM - 4:15 PM

[BBC02-03] Expanding the eco-collection of methane-oxidizing bacteria from rice roots

*Fumika OE¹, Rina Shinjo¹, Sachiko Masuda², Arisa Shibata², Ken Shirasu², Shun Hashimoto³, Hisayuki Mitsui³, Shusei Sato³, Takeshi Watanabe¹, Susumu Asakawa¹ (1.Graduate School of Bioagricultural Sciences, Nagoya University, 2.Center for Sustainable Resource Science, RIKEN, 3.Graduate School of Life Sciences, Tohoku University)

4:15 PM - 4:30 PM

[BBC02-04] Seasonal variations and its controlling factors of dissolved methane concentrations in lakes and ponds from tropical to temperate region

*Masayuki Itoh¹, Yuki Kobayashi², Milette U Mendoza³, Takeshi Tokida⁴, Ayaka Sakabe⁵, Megumu Fujibayashi⁶, Manabu Fukui⁷, Noboru Okuda⁸, Fuh-Kwo Shiah⁹ (1.University of Hyogo, 2.Yamaguchi University, 3.Ateneo de Manila University, 4.NARO, 5.Kyoto University, 6.Kyusyu University, 7.Hokkaido University, 8.Kobe UniveKobe , 9.Academia Sinica)

4:30 PM - 4:45 PM

[BBC02-05] Influence of sampling depth on the potential methane consumption of forest soils at different season and for forest stands of different species.

*Caroline Plain¹, Nicolas bras^2,1, Charlotte Boumans¹, Alan Pierre¹, Thomas Z Lerch³, Daniel Epron^1,4 (1.Universite de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000 Nancy, 2.Universite de Lorraine, INRAE, LAE, F-54000 Nancy, 3.IEES Paris, CNRS, INRAE, IRD, Sorbonne Université, Université Paris Cité, UPEC, F94010 Créteil, 4.Laboratory of Forest Hydrology (S482) Graduate School of Agriculture Kyoto University Kyoto, 606-8502, Japan)

Session information