Yamaguchi Yasuhiko T

ヤマグチヤスヒコ | Yamaguchi Yasuhiko T

Affiliation and department：
Job title： Senior Researcher
Homepage URL (1)： https://sites.google.com/view/y-t-yamaguchi/home

Research field (4)： Environmental dynamics , Atmospheric and hydrospheric science , Ecology and environmental science , Biogeoscience

Research keywords (15)： Geochemistry , Geology , Limnology , Oceanography , Carbon cycle , Nitrogen cycle , Amino Acids , Lake Biwa , Climate Change , Dissolved Organic Matter , Sedimentary Organic Matter , Biogeochemistry , Isotope Ecology , Organic Geochemistry , Isotope Geochemistry

Research theme for competitive and other funds (13)：

2023 - 2029 微量高速C-14分析による水圏炭素動態解明手法の開発
2022 - 2026 極微量安定同位体を用いた水柱酸素消費速度実測:貧酸素水形成におけるその重要性実証
2022 - 2026 湖沼の深水層に卓越する未知の有機物循環系の解明
2022 - 2025 溶存有機物の長期残存性を規定する分子複雑性とその規定要因の解明
2022 - 2025 地球温暖化により生じた貧酸素水塊における酸素消費システムの解明

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Papers (14)：

Akira Ijiri, Fumio Inagaki, Yusuke Kubo, Rishi R Adhikari, Shohei Hattori, Tatsuhiko Hoshino, Hiroyuki Imachi, Shinsuke Kawagucci, Yuki Morono, Yoko Ohtomo, et al. Deep-biosphere methane production stimulated by geofluids in the Nankai accretionary complex. Science advances. 2018. 4. 6. eaao4631
Yasuhiko T. Yamaguchi, Matthew D. McCarthy. Sources and transformation of dissolved and particulate organic nitrogen in the North Pacific Subtropical Gyre indicated by compound-specific delta N-15 analysis of amino acids. GEOCHIMICA ET COSMOCHIMICA ACTA. 2018. 220. 329-347
Naohiko Ohkouchi, Yoshito Chikaraishi, Hilary G. Close, Brian Fry, Thomas Larsen, Daniel J. Madigan, Matthew D. McCarthy, Kelton W. McMahon, Toshi Nagata, Yuichi I. Naito, et al. Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies. ORGANIC GEOCHEMISTRY. 2017. 113. 150-174
Yasuhiko T. Yamaguchi, Yoshito Chikaraishi, Yoshinori Takano, Nanako O. Ogawa, Hiroyuki Imachi, Yusuke Yokoyama, Naohiko Ohkouchi. Fractionation of nitrogen isotopes during amino acid metabolism in heterotrophic and chemolithoautotrophic microbes across Eukarya, Bacteria, and Archaea: Effects of nitrogen sources and metabolic pathways. ORGANIC GEOCHEMISTRY. 2017. 111. 101-112
Sakashita, Wataru, Yokoyama, Yusuke, Miyahara, Hiroko, Yamaguchi, Yasuhiko T., Aze, Takahiro, Obrochta, Stephen P., Nakatsuka, Takeshi. Relationship between early summer precipitation in Japan and the El Nino-Southern and Pacific Decadal Oscillations over the past 400 years. QUATERNARY INTERNATIONAL. 2016. 397. 300-306

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MISC (8)：

Yamaguchi Y. T, Ohkouchi N. Compound-Specific Isotope Analysis as a Tool to Study Microbial Processes in Marine Environments. Journal of Japan Society on Water Environment. 2013. 36. 7. 242-246
Yamaguchi Yasuhiko, Takano Yoshinori, Chikaraishi Yoshito, Suga Hisami, Ogawa Nanako, Yokoyama Yusuke, Ohkouchi Naohiko. Nitrogen isotopic composition and D/L ratio of amino acids in deep-subsurface marine sediments. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0
Ijiri Akira, Takai Ken, Ashi Juichiro, Inagaki Fumio, Toki Tomohiro, Yamaguchi Yasuhiko, Kawagucci Shinsuke, Hattori Shohei, Morono Yuki, Yoshida Naohiro, et al. Biogeochemistry on mud-volcano sediments from the Kumano forearc basin, Japan. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2011. 58. 0. 93-93
Yamaguchi Yasuhiko, Takano Yoshinori, Chikaraishi Yoshito, Ogawa Nanako, Imachi Hiroyuki, Suga Hisami, Yokoyama Yusuke, Ohkouchi Naohiko. Nitrogen isotopic signatures of amino acids in microbes: culture experiments and applications to marine sediments. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2011. 58. 0. 92-92
Yamaguchi Yasuhiko, Takano Yoshinori, Chikaraishi Yoshito, Ogawa Nanako, Imachi Hiroyuki, Suga Hisami, Yokoyama Yusuke, Ohkouchi Naohiko. Nitrogen isotopic signature of amino acids in microbes: a novel tool in biogeochemistry. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2010. 57. 0. 115-115

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Education (4)：

2010 - 2013 The University of Tokyo, Japan Graduate School of Science Department of Earth and Planetary Sciences (Ph.D.)
2008 - 2010 The University of Tokyo, Japan Graduate School of Science Department of Earth and Planetary Sciences (M.Sc.)
2006 - 2008 The University of Tokyo, Japan School of Science Department of Earth and Planetary Environmental Sciences (B.Sc.)
2003 - 2006 The University of Tokyo, Japan College of Arts and Sciences

Professional career (1)：

Ph.D.

Work history (7)：

2022/04 - 現在 Lake Biwa Environmental Research Institute System Analysis Division Senior Researcher
2017/07 - 2022/03 Lake Biwa Environmental Research Institute, Japan Systems Analysis Division Researcher
2016/04 - 2017/06 The University of Tokyo, Japan Atmosphere and Ocean Research Institute Research Fellow
2013/04 - 2016/03 The University of Tokyo, Japan Department of Earth and Planetary Sciences JSPS Research Fellow PD
2013/06 - 2014/12 University of California, Santa Cruz, USA Ocean Sciences Department Research Scholar

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Committee career (7)：

2020/10 - 現在 Japan Geoscience Union Information & System Committee Member
2020/07 - 現在 Researches in Organic Geochemistry Associate Editor
2020/01 - 現在 Geochemical Journal Associate Editor
2019/11 - 現在日本有機地球化学会理事
2021/09 - 2023/09 日本地球化学会広報委員(HP担当)

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Awards (9)：

2018/08 - The Japanese Association of Organic Geochemists Taguchi Award
2012/09 - 2012 Youth Symposium for Japanese Geochemists Oral Presentation Award
2010/09 - 2010年日本地質学会表彰地球科学系の若手研究者の継続的育成活動
2010/08 - 28th Symposium for Japanese Organic Geochemists Poster Award
2010/03 - Graduate School of Science, The University of Tokyo Award for Best M.Sc. Thesis

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Association Membership(s) (7)：

THE JAPANESE SOCIETY OF LIMNOLOGY , Japanese Society of Biogeochemistry , Association for the Sciences of Limnology and Oceanography , THE JAPANESE ASSOCIATION OF ORGANIC GEOCHEMISTS , THE GEOCHEMICAL SOCIETY OF JAPAN , JAPAN GEOSCIENCE UNION , American Geophysical Union

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