2021 - 2025 Development of a method for the detection of microbial food web in terrestrial and aquatic environments by using compound specific stable isotope analysis of multiple amino acids
2020 - 2025 Developing an analytical method of multi-elemental Isoscapes by international networks
2021 - 2024 Development of migration history ecology using multi-isoscapes and analysis of tissues having an individual history
2021 - 2023 放射性炭素同位体を用いた食物年齢測定に基づく土壌食物網の生態系機能の再定義
2022 - 2023 流域生態系の栄養バランスを診断する安定同位体手法の開発
2020 - 2023 Applied research platform based on environmental traceability
2018 - 2021 Construction of ecosystem stoichiometry concept based on bio-geological coupling
2017 - 2020 A novel way to link terrestrial and aquatic ecosystems: a bio-geo multi-isotope approach
2017 - 2020 Proposal and verification of the validity of isotope environmental traceability method in environmental studies
2016 - 2020 Development of ecosystem traceability techniques using multi-elements and molecular level isotope ratios
2016 - 2019 Estimation of geographic origin based on elementary analysis
2016 - 2019 Evaluation of stability of a tropical rainforest food web through isotope anlayses
2013 - 2019 Development of multi-isotope tracer techniques for evaluating functions of coastal ecosystem
2015 - 2017 Development of the precise analytical techniques for studying migratory history using isotope ratios of heavy elements
2012 - 2016 Methanotrophic food webs and carbon recycling in a subtrophic lake
2013 - 2016 Development of molecular level isotope techniques to analyze ecosystems
2012 - 2015 Biodiversity and phosphorous metabolism in watershed ecosystems: a blood vessel hypothesis
2012 - 2015 Development and utilization of a method for growth history analyses by 14C dating in aseasonal tropical rain forest trees
2013 - 2015 Ecosystem structure analysis based on metabolic isotope mapping
2011 - 2014 Stable isotope indicators for evaluating ecosystem functions of biodiversity
2010 - 2013 Study of ecosystem structure and carbon cycling using radiocarbon concentration and molecular level isotope analysis
2011 - 2013 The road of shellfish in the Japanese Archipelago revealed by stable isotope analysis
2011 - 2012 Understanding the relationship between masting and stored carbohydrate resources in trees by a radioactive carbon analysis method
2011 - 2012 Estimation of detritus subsidy on terrestrial food webs
2008 - 2011 Scaling-up effects of intra-specific phenotypic polymorphism on lake ecosystems : experimental approaches
2007 - 2010 Study of ecosystem structure and carbon turnover - Elucidation of carbon cycling in ecosystems using radiocarbon analysis
2003 - 2009 Development of Stable Isotope Indices for Assessing Health and Sustainability of Watershed Ecosystems
2006 - 2009 Study on the change of terrestrial and freshwater ecosystems using environmental isotope traceability method
2002 - 2007 Multi-disciplinary research for understanding interactions between human and nature in the Lake Biwa-Yodo River water shed
2002 - 2006 資源と生態史-空間領域の占有と共有
2003 - 2005 酸素安定同位体を用いた、集水域の生物活性モニタリング法の開発
1997 - 2000 熱帯林の分解システムに関する新しいパラダイムの提示
1994 - 1997 シロアリ体内共生系の生態学的意義と群集・生態系との関係
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Papers (206)：
Emi Arai, Masaru Hasegawa, Chikage Yoshimizu, Naoto F Ishikawa, Naohiko Ohkouchi, Ichiro Tayasu. Divergent Ornamentation Within a Single Population of the Barn Swallow. Journal of Evolutionary Biology. 2024
Masayuki Morohashi, Tatsuyoshi Saito, Masaaki Takahashi, Yayoi Inomata, Makoto Nakata, Masaki Ohno, Tomohiro Kose, Tsuyoshi Ohizumi, Ki-Cheol Shin, Ichiro Tayasu, et al. Variations of dissolved trace elements in precipitation and stream water in Japanese forest area: additional evidence of changing air pollution in the region. Asian Journal of Atmospheric Environment. 2024. 18. 18
Shinya Takano, Tomoya Iwata, Ki-Cheol Shin, Ichiro Tayasu. Strontium isotope analysis identifies the source and transport of fluvial suspended solids in the Fuji River Basin, Japan. Journal of Hydrology: Regional Studies. 2024. 55. 101920-101920
Ryuta Yagi, Takashi F. Haraguchi, Ichiro Tayasu, Kenji Suetsugu. Do exchangeable hydrogens affect the evaluation of partial mycoheterotrophy in orchids? Insights from δ2H analysis in bulk, α-cellulose, and cellulose nitrate samples. New Phytologist. 2024. 243. 2430-2442
Hiroki Yotsuyanagi, Masayuki Morohashi, Masaaki Takahashi, Tsuyoshi Ohizumi, Yayoi Inomata, Shiho Yabusaki, Ichiro Tayasu, Hiroshi Okochi, Hiroyuki Sase. Sulfate runoff processes during rainfall events in a small forested catchment on the sea of Japan side recovering from acidification under climate change. Hydrological Processes. 2024. 38. 7. e15221
Tayasu, I. Ecological studies using Isoscapes. Kaiyo Monthly. 2021. 53. 12. 605-612
Kurita, Y, Tominaga, O, Shirai, K, Tayasu, I. Estimating fish migration history using multi-element isotopes: state-of-the-art techniques and applications. Kaiyo Monthly. 2021. 53. 12. 599-602
Stable isotope analysis for ecological and forensic purposes
(The Coaching Clinic “The Role of Stable Isotopes in Tracing Biological Materials and Talent Mobility Post JASTIP 2025” 2023)
Use of multiple isoscapes on environmental research
(Workshop on “Biodiversity, Genetic Resources and Innovative Bioresources Technology for Future Sustainable Use of Biodiversity” 2023)
Education (2)：
1992 - 1997 Kyoto University Graduate School, Division of Natural Science Zoology
1988 - 1992 Kyoto University Faculty of Science Biology
Professional career (2)：
Doctor(Science) (Kyoto University)
Master(Scinece) (Kyoto University)
Work history (11)：
2024/04 - 現在 Research Institute for Humanity and Nature Fundamental Research Department Director
2024/04 - 現在 Kanazawa University Visiting Professor
2023/04 - 現在 The Graduate University for Advanced Studies, SOKENDAI Global Environmental Studies Course Professor, Chief
2022/04 - 現在 Research Institute for Humanity and Nature Deputy Director-General (Planning and Coordination)
2020/04 - 現在 Graduate School of Life Sciences, Tohoku University Ecosystem Functions, Eco-Socio Dynamics, Ecological Developmental Adaptability Fields Visiting Professor
2014/12 - 現在 Research Institute for Humanity and Nature Professor
2022/04 - 2024/03 Research Institute for Humanity and Nature RIHN Center Director
2003/11 - 2014/11 Kyoto University Center for Ecological Research Associate Professor
2002/03 - 2003/10 Research Institute for Humanity and Nature Assistant Professor
2000/04 - 2002/02 JSPS Research Fellow (Research Abroad) in France
1997/04 - 2000/03 JSPS Research Fellow (PD)
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Committee career (10)：
2013/11 - 現在 Frontiers in Environmental Science Review Editor
2016/01 - 2025/12 The Ecological Society of Japan Representatives of Kinki Branch (Kyoto)
2020/01 - 2023/12 The Japanese Society of Limnology Council member
2019/01 - 2021/12 Japanese Society of Limnology Limnology Editor-in-Chief
2019/03 - 2021/03 Ecological Society of Japan Auditor-secretary
2017/03 - 2019/03 Japanese Society of Ecology Managing Director
2014/01 - 2017/12 Ecological Society of Japan Ecological Research, Associate Editor-in-Chief
2012/04 - 2013/03 Ecological Society of Japan Chief, Annual Meeting Planning Committee
2005/04 - 2011/03 Japanese Society of Limnology Limnology , Associate Editor
2005/01 - 2007/12 Ecological Society of Japan Japanese Journal of Ecology, Associate Editor
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Awards (2)：
2019/07 - Ecological Society of Japan 20th Biwako Prize for Ecology
1999 - Inoue Foundation for Science INOUE Researc Award for Young Scientist
Association Membership(s) (5)：
JAPAN GEOSCIENCE UNION
, The International Union for the Study of Social Insects
, The Japanese Society of Limnology
, The Japanese Society of Soil Zoology
, Ecological Society of Japan
