Graduate School Human and Environmental Studies/Earth, Life and Environment
Undergraduate School Earth, Life and Environment (Division of Natural Sciences)
Other Affiliation Institute for Liberal Arts and Sciences
Email 「メール通信欄」からお願いします
Personal Page Website
Until 2023, the undergraduate school had five divisions. 'Division' provided above refers to the faculty member's former affiliation.
Research areas Paleontology, Geochemistry
Keywords micropaleontology, foraminifera, stable isotope, otolith, development of analytical system
Themes Isotope geochemistry with ultra-sensitive determination for the stable carbon and oxygen isotopic compositions of the minute amount of carbonate.
Geochemistry specialized with development the automated analytical systems.
Geology and micropaleontology, specialized with environmental reconstruction, taxonomy of foraminifera and biostratigraphy.
Applications of the ultra-high resolution stable isotopic analytical technique for clarifying the life history recorded in fish otolith.
Major publications Muto, D., Ishimura, T., Takahashi, M., Nishida, K. (2022). Extracting daily isotopic records on fish otolith (Trachurus japonicus) by combining micro‐milling and micro‐scale isotopic analysis (MICAL‐CF‐IRMS). Rapid Communications in Mass Spectrometry, 36(20), p.e9366.
Sakamoto, T., Takahashi, M., Chung, M.T., Rykaczewski, R.R., Komatsu, K., Shirai, K., Ishimura, T., Higuchi, T. (2022). Contrasting life-history responses to climate variability in eastern and western North Pacific sardine populations. Nature Communications, 13(1), p.5298.
石村豊穂, (2021). 極微量炭酸塩の高精度安定同位体比分析の実現: ナノグラム領域の新たな環境解析. 地球化学, 55(3), pp.63-86. (招待論文)
Nishida, K., Yasu, A., Nanjo, N., Takahashi, M., Kitajima, S., Ishimura, T. (2020). Microscale stable carbon and oxygen isotope measurement of individual otoliths of larvae and juveniles of Japanese anchovy and sardine. Estuarine, Coastal and Shelf Science, 245, p.106946.
Nakamura, M., Yoneda, M., Ishimura, T., Shirai, K., Tamamura, M. and Nishida, K., Temperature dependency equation for chub mackerel (Scomber japonicus) identified by a laboratory rearing experiment and microscale analysis. Marine and Freshwater Research.
Ujiie, U., Kimoto, K., Ishimura, T. Advanced approach to analyzing calcareous protists for present and past pelagic ecology: comprehensive analysis of 3D-morphology, stable isotopes, and genes of planktic foraminifers. PLoS ONE. DOI: 10.1371/journal.pone.0213282 2019年3月
Sakamoto, T., Komatsu, K., Shirai, K., Higuchi, T., Ishimura, T., Setou, T., Kamimura, Y., Watanabe, C., and Kawabata, A. Combining micro-volume isotope analysis and numerical simulation to reproduce fish migration history. Methods in Ecology and Evolution. DOI: 10.1111/2041-210X.13098
Nishida, K. and Ishimura, T. Grain-scale stable carbon and oxygen isotopic variations of the international reference calcite, IAEA-603. Rapid Communications in Mass Spectrometry 2017年9月
Takagi, H., Moriya, K., Ishimura, T., Suzuki, A., Kawahata, H., and Hirano, H., 2016. Individual migration pathways of modern planktic foraminifers: Chamber-by-chamber assessment of stable isotopes. Paleontological Research, doi:10.2517/2015PR036.
Ishimura, T., Tsunogai, U., Hasegawa, S., Nakagawa, F., Oi, T., Kitazato, H., Suga, H., Toyofuku, T. 2012. Variation in stable carbon and oxygen isotopes of individual benthic foraminifera: tracers for quantifying the magnitude of isotopic disequilibrium. Biogeosciences. 9, 4353-4367, doi:10.5194/bg-9-4353-2012
Ishimura, T. Tsunogai, U., Nakagawa, F. 2008. Grain-scale heterogeneity of the stable carbon and oxygen isotopic compositions in international standard calcite materials (NBS19, NBS18, IAEA-CO-1, and IAEA-CO-8). Rapid Communications in Mass Spectrometry. 22, 1925–1932. DOI: 10.1002/rcm.3571
Ishimura, T., Tsunogai, U., and Gamo, T., Stable carbon and oxygen isotopic determination of sub-microgram quantities of CaCO3 to analyze individual foraminiferal shells. Rapid Communications in Mass Spectrometry. 18. pp 2883-2888. DOI: 10.1002/rcm.1701. 2004.
Professional societies/Research and synergic activities Cushman Foundation
American Geophysical Union
Paleosciences Society
Teaching Areas
  • Undergraduate courses
  • Graduate courses (Master's program)
  • Graduate courses (Doctor's program)
  • Undergraduate courses open to all departments
Background Associate Professor, Kyoto University (2020- present)
Associate Professor, National Institute of Technology, Ibaraki College (2012- 2020)
Visiting Scientist (AIST, 2012- present)
Visiting Scientist (JAMSTEC, 2012-2014)
Post-Doctoral Research Fellow (April 2012 -2012). Creative Research Institution, Hokkaido University,
Post-Doctoral Research Fellow (April 2009 -2012). Geological Survey of Japan, AIST
Post-Doctoral Research Fellow (April 2005 - March 2009) Graduate School of Sciences, Hokkaido University,
Research scientist, Nakagawa Museum of Natural History, April 1999 - March 2000.
Ph.D. (Earth Science), Hokkaido University, 2005
Master of Science (Environmental Science), Hokkaido University, 1999
Bachelor of Science (Geology)., Hokkaido University, 1997

Send message to Professor ISHIMURA, Toyoho by mail

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

    人間・環境学研究科パンフレット 総合人間学部パンフレット