Thu. May 30, 2024 9:00 AM - 10:30 AM 302 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Biogeochemistry

convener:Keitaro Fukushima(Faculty of Food and Agricultural Sciences, Fukushima University), Keisuke Koba(Center for Ecological Research, Kyoto University), Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Naohiko Ohkouchi(Japan Agency for Marine-Earth Science and Technology), Chairperson:Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Karibu Fukuzawa(Field Science Center for Northern Biosphere, Hokkaido University)

Thu. May 30, 2024 10:45 AM - 12:00 PM 302 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Biogeochemistry

convener:Keitaro Fukushima(Faculty of Food and Agricultural Sciences, Fukushima University), Keisuke Koba(Center for Ecological Research, Kyoto University), Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Naohiko Ohkouchi(Japan Agency for Marine-Earth Science and Technology), Chairperson:Keisuke Koba(Center for Ecological Research, Kyoto University), Keitaro Fukushima(Faculty of Food and Agricultural Sciences, Fukushima University)

Thu. May 30, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Biogeochemistry

convener:Keitaro Fukushima(Faculty of Food and Agricultural Sciences, Fukushima University), Keisuke Koba(Center for Ecological Research, Kyoto University), Youhei Yamashita(Faculty of Environmental Earth Science, Hokkaido University), Naohiko Ohkouchi(Japan Agency for Marine-Earth Science and Technology)

Sun. May 26, 2024 10:45 AM - 12:00 PM 106 (International Conference Hall, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-OS Ocean Sciences & Ocean Environment

[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

11:00 AM - 11:15 AM

[AOS13-07] Heme B as a tool to constrain stable iron isotopic composition of biological iron

*Yuta Isaji¹, Toshihiro Yoshimura¹, Daisuke Araoka², Minako Kurisu¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.The National Institute of Advanced Industrial Science and Technology)

Sun. May 26, 2024 3:30 PM - 4:45 PM 106 (International Conference Hall, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-OS Ocean Sciences & Ocean Environment

[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

3:30 PM - 3:45 PM

[AOS13-11] Integrated trophic positions of zooplankton communities as a new indicator of marine ecosystem structure

*Naoto F. Ishikawa¹, Kazuaki Tadokoro², Chisato Yoshikawa¹, Nanako O. Ogawa¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Japan Fisheries Research and Education Agency)

Wed. May 29, 2024 9:00 AM - 10:15 AM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT16] Development and application of environmental traceability methods

9:45 AM - 10:00 AM

[HTT16-09] Nitrogen isotopic relationships in diets, eye lenses, and muscle of chub mackerel revealed through a laboratory rearing experiment

*Chisato Yoshikawa¹, Nanako O. Ogawa¹, Naoto F. Ishikawa¹, Michio Yoneda², Ryuji Yukami², Shin-ichi Ito³, Naohiko Ohkouchi¹ (1.JAMSTEC, 2.FRA, 3.AORI)

10:00 AM - 10:15 AM

[HTT16-10] Insights of the aquatic ecosystem in Lake Suwa using compound-specific isotope ratio analysis

*Atsushi URAI^1,2, Yoshinori Takano², Naoto F. Ishikawa², Nanako O. Ogawa², Hiroaki Tatsuno¹, Satoe Kasahara¹, Yuichi Miyabara¹, Naohiko Ohkouchi² (1.Shinshu University, 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

Wed. May 29, 2024 10:45 AM - 12:00 PM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT16] Development and application of environmental traceability methods

11:45 AM - 12:00 PM

[HTT16-15] Sub-micro level isotope analysis of sulfur to understand its biogeochemical and ecological cycles

*Nanako O. Ogawa¹, Toshihiro Yoshimura¹, Takeru Kochi^2,1, Junichiro Kuroda^2,1, Yoshinori Takano¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

Tue. May 28, 2024 3:30 PM - 5:00 PM 301A (International Conference Hall, Makuhari Messe)

[E] Oral
| B (Biogeosciences )
| B-BG Biogeosciences & Geosphere-Biosphere Interactions

[B-BG01] Earth and Planetary Science Frontiers for Life and Global Environment

4:10 PM - 4:30 PM

[BBG01-07] Extraterrestrial Nucleobases Are More Abundant Than Previously Thought: Potential Links of the Distributions of N-heterocycles with Meteorite Minerals

★Invited Papers

*Toshiki Koga¹, Yoshinori Takano¹, Yasuhiro Oba², Nanako O. Ogawa¹, Hiroshi Naraoka³, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Institute of Low Temperature Science, Hokkaido University, 3.Department of Earth and Planetary Sciences, Kyushu University)

4:30 PM - 4:45 PM

[BBG01-08] The end-Triassic Mass Extinction Event: Insights from compound-specific nitrogen isotopes

*Calum Peter Fox¹, Yuta Isaji¹, Nanako O. Ogawa¹, Jessica H. Whiteside², Aisha Al Suwaidi³, Naohiko Ohkouchi¹ (1.Japanese Agency for Marine-Earth Science and Technology, Japan, 2.San Diego State University, USA, 3.Khalifa University of Science and Technology, UAE)

Fri. May 31, 2024 10:45 AM - 12:00 PM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS10] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

11:30 AM - 11:45 AM

[MIS10-10] Past and present variability of nitrate utilization in the seasonally ice-covered Southern Ocean

*Aymeric Pierre Marie Servettaz¹, Yuta Isaji¹, Chisato Yoshikawa¹, Nanako O. Ogawa¹, Yeongjun Ryu², Boo-Keun Khim³, Yang-Hee Jang⁴, Daniel M. Sigman², Francisco J. Jiménez-Espejo^1,5, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, 2.Department of Geosciences, Princeton University, Princeton, New Jersey 08544, USA, 3.Department of Oceanography and Marine Research Institute, Pusan National University, Busan 46241, Korea, 4.Marine Ecosystem Management Department, Marine Environment Research Institute, Korea Marine Environment Management Corporation, Busan 49111, Korea, 5. Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, Spain)

Thu. May 30, 2024 9:00 AM - 10:15 AM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS12] Paleoclimatology and paleoceanography

9:30 AM - 9:45 AM

[MIS12-13] The reactive phase of sediments as an archive for the magnesium isotope composition of seawater

*Adam David Sproson¹, Toshihiro Yoshimura¹, Shigeyuki Wakaki², Tsuyoshi Ishikawa³, Naohiko Ohkouchi¹ (1.Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan, 2.National Museum of Japanese History, 117 Jonai-cho, Sakura City, Chiba Prefecture 285-8502, Japan, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology 200 Monobe Otsu, Nankoku City, Kochi 783-8502, Japan)

Thu. May 30, 2024 10:45 AM - 12:00 PM 302 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Biogeochemistry

11:00 AM - 11:15 AM

[MIS14-08] Carbon isotopic compositions of 16 proteinogenic amino acids and their enantiomers for biogeochemical studies

*Naohiko Ohkouchi¹, Yunchen Sun^1,2, Nanako O Ogawa¹, Yoshinori Takano¹, Naoto F Ishikawa¹, Yuta Isaji¹, Thomas M Blattmann^1,3, Junichiro Kuroda^1,2, Hodaka Kawahata^2,4 (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, University of Tokyo, 3.ETH Zurich, 4.Waseda University)

Naohiko Ohkouchi

Convener, Chairperson

[M-IS14] Biogeochemistry

[M-IS14] Biogeochemistry

[M-IS14] Biogeochemistry

Speaker, Author, Co-Author

[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

[AOS13-07] Heme B as a tool to constrain stable iron isotopic composition of biological iron

[A-OS13] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

[AOS13-11] Integrated trophic positions of zooplankton communities as a new indicator of marine ecosystem structure

[H-TT16] Development and application of environmental traceability methods

[HTT16-09] Nitrogen isotopic relationships in diets, eye lenses, and muscle of chub mackerel revealed through a laboratory rearing experiment

[HTT16-10] Insights of the aquatic ecosystem in Lake Suwa using compound-specific isotope ratio analysis

[H-TT16] Development and application of environmental traceability methods

[HTT16-15] Sub-micro level isotope analysis of sulfur to understand its biogeochemical and ecological cycles

[B-BG01] Earth and Planetary Science Frontiers for Life and Global Environment

[BBG01-07] Extraterrestrial Nucleobases Are More Abundant Than Previously Thought: Potential Links of the Distributions of N-heterocycles with Meteorite Minerals

★Invited Papers

[BBG01-08] The end-Triassic Mass Extinction Event: Insights from compound-specific nitrogen isotopes

[M-IS10] Global climate change driven by the Southern Ocean and the Antarctic Ice Sheet

[MIS10-10] Past and present variability of nitrate utilization in the seasonally ice-covered Southern Ocean

[M-IS12] Paleoclimatology and paleoceanography

[MIS12-13] The reactive phase of sediments as an archive for the magnesium isotope composition of seawater

[M-IS14] Biogeochemistry

[MIS14-08] Carbon isotopic compositions of 16 proteinogenic amino acids and their enantiomers for biogeochemical studies