Keynote/Plenary/Invited International Presentations
  • Invited: “Exploring the deep biosphere-frontier beneath the ocean: A geobiological perspective on the oceanic crust and the underlying upper mantle”, Japan Geoscience Union (JpGU), SCG42-02, June 2, 2021 (Online) 

  • Invited: “The nature and limits of the deep subseafloor biosphere: A geomicrobiological perspective on the oceanic crust and upper mantle”, The Tokai University Workshop “Challenges of Marine Observations and Development of International Collaboration”, Institute of Ocean Research and Development, Tokai University, Japan, March 6, 2021 (Online).

  • Invited and Program Co-chair: “Great Debate: Geoscience and societal leadership in support of planetary stewardship”, JpGU-AGU Joint Meeting 2020, July 15, 2020 (Online).

  • High-Level Sector Presentation: “Exploring the deep Arctic biosphere with Chikyu”, Norway-Japan Collaboration Workshop “Scientific Exploration of the Deep Arctic Ocean”, JAMSTEC Tokyo Office, Tokyo, Japan, 2019.

  • Invited: “Missions to the upper mantle: Toward the most challenging endeavor in geosciences”, Deep Carbon Observatory (DCO), Deep Carbon 2019, National Academy of Science, Washington D.C., USA, 2019.

  • Invited & Panelist: “Exploring the deep biosphere beneath the ocean: Perspective on planetary habitability”, Special Session “Blue Innovation, Science to Policy”, International Marine Biotechnology Conference, Shimizu, Shizuoka, Japan, 2019.

  • High-Level Sector Presentation: EU Science, Technology, and Innovation (STI) Counselors Open Lecture “Missions to Mantle: International collaborations toward the most challenging endeavor in geoscience”, The Europa House, EU Embassy at Tokyo, Japan, 2019.

  • High-Level Sector Presentation (G20 side event): “Missions to Mantle: the most challenging endeavor in Earth science”, France-Japan Collaboration Workshop, JAMSTEC Tokyo Office, Tokyo Japan, 2019.

  • Copernicus Medal 2019 EGU Lecture: “Exploring the limits of deep subseafloor life and geosphere-biosphere interactions through scientific ocean drilling”, EGU General Assembly, Vienna, Austria, 2019.

  • Keynote: “Exploring new scientific frontiers with Chikyu”, J-DESC Workshop for the Future IODP, JAMSTEC Yokohama Earth Institute, Yokohama, Japan, 2019.

  • Invited University Seminar: “Exploring the planetary habitability beneath the Ocean”, Center for Geobiology (CGB) Seminar Series, University of Bergen, Norway, 2019.

  • Invited: “Geosphere-biosphere interactions in the Nankai accretionary complex”, Inaugural Symposium for The International Center for Deep Life Investigation (ICDLI) and Deep Carbon Observatory (DCO) Deep Life Community Meeting, Shanghai Jiao-Tong University, China, 2018.

  • Invited University Seminar: Exploring deep subseafloor life and the biosphere: What are the limits of habitability?”, The CORE Seminar, School of Engineering, Newcastle University, UK, 2018.

  • Keynote: “Exploring deep subseafloor life and limits of the biosphere through scientific ocean drilling”, UK-IODP Symposium for Celebrating 50 Years of Scientific Ocean Drilling, Natural History Museum, London, UK, 2018.

  • Plenary Lecture: “Exploring deep microbial life in the planetary interior -What are the limits of habitability?”, Goldschmidt 2018, Boston, MA, USA, 2018.

  • Invited: “Biogenic methane production in the deep subseafloor biosphere”, Gordon Research Conference for Molecular Basis of One-Carbon Metabolism, Boston, MA, USA, 2018.

  • Keynote: “Exploring the limits of deep subseafloor geosphere-biosphere interactions through scientific ocean drilling”, 50 Years Anniversary of International Ocean Drilling, EGU General Assembly, Vienna, Austria, 2019.

  • Invited & Discussion Leader: “Populating the deep biosphere”, Gordon Research Conference for Deep Carbon Science, Smithfield, RI, USA, 2018.

  • Invited: “Deep-biosphere methane production stimulated by geosphere-biosphere interactions”, IODP ECORD MagellanPlus Workshop, The Arctic University of Norway in Tromsø, Norway, 2018.

  • Invited: “Ecosystem functions and limits in the deep subseafloor biosphere”, ConBio2017, Kobe, Japan, 2017.

  • Invited: “Deciphering geosphere-biosphere interactions and limits of life through scientific ocean drilling”, International Society for Subsurface Microbiology (ISSM) 2017, Rotorua, New Zealand, 2017.

  • Invited: “Limits to deep subseafloor life and geosphere-biosphere interactions”, International Workshop on “Marine Geomicrobiology: A matter of energy”, Aarhus University, Denmark, 2017.

  • Invited University Seminar: “Deciphering geosphere-biosphere interactions and limits of life through scientific ocean drilling”, Department Lecture, Department of Earth System Sciences, Yonsei University, Saul, South Korea, 2017.

  • Keynote and Convener: “Biosphere Frontiers: Global pictures and perspectives”, Australian IODP Regional Planning Workshop, University of Sydney, Australia, 2017.

  • Invited: “Exploration of the limits of life in the deep subseafloor biosphere”, The 4th IGS Precambrian World Workshop, Kyushu University, Fukuoka, Japan, 2017.

  • Keynote: “Exploring multi-spheres interactions through scientific ocean drilling: A perspective from the deep biosphere”, 50th Anniversary of Scientific Ocean Drilling, Japan Geoscience Union (JpGU) 2017, Makuhari Messe, Chiba, Japan, 2017.

  • Invited & Moderator: “IODP Expedition 370: Temperature limit of the deep biosphere off Muroto”, Deep Carbon Observatory (DCO) 3rdInternational Science Meeting, St. Andrews, Scotland, UK, 2017.

  • Keynote & Workshop Chair: “Temperature limit of the deep biosphere off Muroto”, Deep Carbon Observatory (DCO)-Goldschmidt 2016 Joint Workshop, Chikyu, Shimizu, Japan, 2016.

  • Invited Special Lecture: “Exploring deep biosphere frontiers through scientific ocean drilling”, The Chikyu IODP Board (CIB) Meeting 2016, Kobe University, Kobe, Japan, 2016.

  • Invited: “The deep mud-volcano biosphere associated with the Nankai accretionary complex: Implication for geosphere-biosphere interactions”, Gordon Research Conference on Gas Hydrates, Galveston, TX, USA, 2016.

  • Invited University Seminar: “Exploring frontiers of the deep biosphere through scientific ocean drilling”, Geobiology Course, Department of Earth Science, University of Southern California, Los Angeles, CA, USA, March 22, 2016.

  • AGU Taira Prize Lecture: “Exploring Frontiers of the Deep Biosphere through Scientific Ocean Drilling”, AGU Fall Meeting, San Francisco, CA, USA, December 14, 2015.

  • Invited: “Exploring the extent and limits of the deep biosphere associated with coal-bearing hydrocarbon system down to ~2.5 km below the seafloor off Shimokita, Japan”, The 3rd International Symposium on “Application of Nano-Geosciences in Petroleum Engineering”, Kyoto University, Kyoto, Japan, September 15, 2015.

  • Invited University Seminar & Conference Chair: “Exploring deep life in coal-bearing sediments down to 2.5 km below the seafloor”, International Symposium “Frontiers in Marine Geology—Deep Life and Deep Carbon”, National Sun Yat-Sen University, Kaohsiung, Taiwan, 2015.

  • Invited: “Exploring deep life in coal-bearing sediments down to 2.5 km below the seafloor”, Deep Carbon Observatory (DCO) 2nd International Science Meeting, Deutsches Museum, Münich, Germany, 2015.

  • Keynote & Moderator: “Limits and habitability of microbial life in the deep subseafloor biosphere”, International Marine Microbiology Conference, Qingdao, China, May 24, 2015.

  • Invited Seminar: “Exploring deep life in coal-bearing sediments down to ~2,5 km below the seafloor”, Max Plank Institute for Marine Microbiology, Bremen, Germany, May 12, 2015.

  • Keynote and Symposium Chair: “Exploring deep life in coal-bearing sediments down to 2.5 km below the seafloor” International Symposium “Frontiers in Marine Geology -Deep Life and Deep Carbon”, National Sun Yat-Sen University, Kaohsiung, Taiwan, April 16, 2015.

  • Keynote: “Limits and habitability of subseafloor life in the deep sedimentary biosphere”, International Society for Microbial Ecology (ISME) 2014, Saul, South Korea, 2014.

  • Invited: “Exploring deep life in coal-bearing sediments down to 2.5 km below the seafloor”, Deep Carbon Observatory (DCO) 2nd International Science Meeting, Deutsches Museum, Munich, Germany, March 27, 2015.

  • Invited University Seminar: “Methodological advances for the identification of subseafloor communities and their activities”, ECORD Summer School “Subseafloor Biosphere: Current Advances and Future Challenges” ECORD summer school, University of Bremen, Germany, 2014.

  • Keynote: “Limits and habitability of subseafloor life in the deep sedimentary biosphere”, The 3rd International Conference for Geobiology, Wuhan, China, 2014.

  • Invited University Seminar: “Limits and habitability of subseafloor life”, Shanghai Jiao Tong University, Shanghai, China, 2014.

  • High-Level Sector Presentation: “New insights into deep life and carbon cycle: IODP Expedition 337 Deep coalbed biosphere off Shimokita”, JAMSTEC-ECORD MoU Ceremony, The Europa House, EU Embassy at Tokyo, Tokyo, Japan, 2014.

  • Invited University Seminar: “Exploration of deep life and deep carbon through scientific ocean drilling: What do we learn from Earth’s ecosystems?”, World Premier Institute (WPI) I2NER Program, WPI-I2CNER Seminar Series, Kyushu University, Fukuoka, Japan, 2014.

  • Invited: “Drilling technology and contamination assessment for deep and low-biomass samples”, Deep Carbon Observatory (DCO) Deep Life Community Meeting, Monterey, San Diego, CA, USA, November 6, 2014.

  • Invited: “The deep mud-volcano biosphere in the Nankai Trough accretionary prism”, International Symposium for Subsurface Microbiology (ISSM 2014), Monterey , San Diego, CA, USA, October 9, 2014.

  • Invited: “Methodological advances for the identification of subseafloor communities and their activities”, ECORD Summer School “Subseafloor Biosphere: Current Advances and Future Challenges”, MARUM University of Bremen, Bremen, Germany, September 22, 2014.

  • Keynote: “Limits and habitability of subseafloor life in the deep sedimentary biosphere”, International Society for Microbial Ecology (ISME) 2014, Seoul, South Korea, August 25, 2014.

  • Invited University Seminar: “Limits and habitability of subseafloor life”, Shanghai Jiao-Tong University, Shanghai, China, June 20, 2014.

  • Keynote and Session Chair: “Limits and habitability of subseafloor life in the deep sedimentary biosphere”, The 3rd International Conference for Geobiology, Wuhan, China, June 17, 2014.

  • High-Level Sector Presentation: “New insights into deep life and carbon cycle: IODP Expedition 337 Deep coalbed biosphere off Shimokita”, JAMSTEC-ECORD MoU Ceremony, The Europa House, EU Embassy at Tokyo, Japan,February 17, 2014.

  • Invited University Seminar: “Limits and habitability of life in the deep subseafloor biosphere—Lessons from scientific ocean drilling”, Department of Earth Science, California Institute of Technology, Los Angeles, CA, USA, 2013.

  • Invited: "Limits and habitability of life in the deep subseafloor biosphere: Lessons from scientific ocean drilling “, International Astrobiology Workshop, JAXA/ISAS, Sagamihara, Kanagawa, Japan, November 29, 2013.

  • Invited and Session Chair: “Exploration of the deep coalbed biosphere (IODP Expedition 337)”, Goldschmidt 2013, Florence, Italy, August 26, 2013.

  • Invited: “Exploration of the deep coalbed biosphere off Shimokita: Overview and perspectives”, Japan Geoscience Union (JpGU) 2013, Makuhari Messe, Chiba, Japan, May 24, 2013.

  • Invited: “The deep submarine mud-volcano biosphere in the Nankai accretionary prism”, Deep Carbon Observatory (DCO) Deep Life Workshop, McMenamins, Portland, OR, USA, May 15, 2013.

  • Keynote: “Exploration of deep carbon cycle and limits of life with CHIKYU”, CHIKYU+10 Workshop, Tokyo, Japan, April 21, 2013.

  • Invited JCVI Seminar: "The IODP Expedition 337: Exploration of microbial processes and hydrocarbon system associated with deeply buried coalbed in the ocean”, J. Craig Venter Institute, JCVI Rockville Seminar, Rockville, MD, USA, March 4, 2013.

  • Invited: “The deep coalbed biosphere off Shimokita”, JOGMEC-TRC Week, Makuhari, Chiba, Japan, November 21, 2012.

  • Invited: "Subseafloor life in the seismogenic accretionary wedge”, The 2nd  International Workshop on Microbial Life under Extreme Energy Limitation, Aarhus University, Aarhus, Denmark, May 7, 2012.

  • Keynote and Workshop Chair: "Frontiers in Life and Earth Planetary Sciences: Lessons from Scientific Ocean Drilling “, International Workshop “Frontiers in Life and Planetary Sciences”, JAMSTEC KCC, February 15, 2012.

  • Invited JCVI Seminar: "Habitability and potential functioning power of deep subseafloor life”, JCVI Seminar,  J. Craig Venter Institute, San Diego, CA, USA, December 1, 2012.

  • Invited: "Exploration of biosphere frontiers through scientific ocean drilling (IODP Expeditions 329 & 337)”, International Symposium for Subsurface Microbiology (ISSM), Garmisch-Partenkirchen, Germany, September 12, 2011.

  • Invited: "New analytical technologies for the deep-subseafloor biosphere research”,  IODP-InterRIDGE Workshop “Melting, Magma, Fluids, Life”, University of Southampton, NOCS Charnockx Lecture Theatre, UK, July 27, 2009.

  • Invited: "Deep subseafloor life and biosphere in the seismogenic plate-subduction zone”, The 109th American Society for Microbiology (ASM) General Meeting, Philadelphia, PA, USA, May 19, 2009.

  • Invited and Session Chair: “Coal-based subseafloor seep microbial ecosystem”, Goldschmidt 2008, University of British Columbia, Vancouver, Canada, July 11, 2008.

  • Invited: "The Chikyu Shakedown Expedition Offshore Shimokita Peninsula”,  International Workshop on Microbial Life under Extreme Energy Limitation “The Starving Majority”, Aarhus University, Aarhus, Denmark, October 22, 2007.

  • Invited: "Exploration of the deep subseafloor life and biosphere”,  The Gordon Research Conference, Applied and Environmental Microbiology, Mount Holyoke College, South Hadley, MA, USA, July 18, 2007.

  • Invited Special Seminar: "How greater understanding of subseafloor life through the IODP”,  Scientific briefings of recently held IODP long-term planning workshops, IODP Town Hall Meeting-Charting IODP Investigations: Planning Workshops, Drilling Vessels, AGU Fall Meeting, San Fransisco, CA, USA, December 14, 2006.

  • Invited and Workshop Co-Chair: "Thematic Overview: Technology of the riser drilling vessel Chikyu”,  Integrated Ocean Drilling Program (IODP) Workshop “Exploration of Subseafloor Life with the Integrated Ocean Drilling Program”, Vancouver, Canada, October 3, 2006.

  • Invited University Seminar: "In search of the deep biosphere: on going explorations and future prospectus”,  Wageningen University, Wageningen, Netherlands, March, 2006.

  • Invited Seminar: "Microbial community in deep-sea liquid CO2/CO2-hydrate hydrothermal system”, Max Plank Institute for Terrestrial Microbiology, Marburg, Germany, February 28, 2006.  

  • Invited and Session Chair: "Microbial community inhabited a borehole observatory (CORK) recovered from ODP Site 1026, the eastern Juan de Fuca Ridge flank, IODP Leg 301International Symposium for Subsurface Microbiology (ISSM), Jackson Hole, WY, USA, August 19, 2005.

  • Invited: "The Paleome: Letters from ancient earth”,  Joint Meeting of the 3 Division of the International Union of Microbiological Societies (IUMS) 2005, San Fransisco, CA, USA, July 27, 2005.

  • Invited University Seminar: In search of the deep biosphere: on going explorations and future prospectus”, University of Oldenburg, ICBM Seminar, Oldenburg, Germany, May 24, 2005.

  • Invited: Unseen majority of prokaryotes in marine subsurface sediments”, The 2nd Okazaki Biology Conference (OBC) “Terra Microbiology”, Ise-Shima, Mie, Japan, September 28, 2004.

  • Invited: "Microbial distribution and diversity in methane hydrate-baring marine sediments from the Peru Margin (ODP Leg 201) and the Cascadia Margin (ODP Leg. 204) “, NATO Advanced Research Workshop 2003, Sevastopol, Crimea, Ukraine, October 4-8, 2003.

  • Invited: Deep-subterranean microbial communities in the Hishikari epithermal gold mine: active thermophilic microbial habitats and endolithic ancient microbial relics”, ESF Subseafloor Biosphere Symposium, Max Plank Institute for Marine Microbiology, Bremen, Germany, September 2001.

  • Invited Seminar: "Genetic records of subsurface microbes associated with the shift of paleo-environment“, NASA/JPL CISSR Seminar, NASA JPL, Los Angeles, CA, USA, January 12, 2001.

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