Keisuke Koba CV


Keisuke Koba


Kyoto University, Kyoto, Japan


BA, 1994

Kyoto University, Kyoto, Japan


MS, 1996

Kyoto University, Kyoto, Japan


PhD, 2000



Professor, Center for Ecological Research, Kyoto University, Japan

Work experience

October, 1998 - May, 2003: Research Associate (nearly comparable to Assistant Professor in US academic system) in Graduate School of Informatics, Kyoto University

February, 2000 - January, 2001: Visiting Scientist in The Ecosystems Center, Marine Biological Laboratory

May, 2003 - October, 2007: Lecturer (nearly comparable to Research Associate Professor in US academic system) in Department of Environmental Science and Technology, Tokyo Institute of Technology

November, 2006 - March, 2011: Associate Professor (tenure-track position) in Tokyo University of Agriculture and Technology

April, 2011 - January, 2016: Associate Professor in Tokyo University of Agriculture and Technology

February, 2016 - Present: Professor in Center for Ecological Research, Kyoto University

Fields and Interests

Ecosystems Ecology with stable isotope techniques:
Biogeochemical cycles of materials (N, P, C, S, O, H, Si, Fe)

Isotope/Isotopomer technique for biogeochemical cycle studies

Anoxic environment (CH4, N2O dynamics in soil and water)

Ecosystems Ecology (plant - soil systems featuring microbial function)

Marriage of Environmental Economy and Ecosystems Ecology for more appropriate evaluations of ecosystems

Systems themselves (as nitrogen cycles, ecosystems, human systems, www etc.)

Selected Publications (in recent five years)

1. X.-Y. Liu*, K. Koba*, L. A. Koyama, S. E. Hobbie, M. S. Weiss, Y. Inagaki, G. R. Shaver, A. E. Giblin, S. Hobara, K. J. Nadelhoffer, M. Sommerkorn, E. B. Rastetter, G. W. Kling, J. A. Laundre, Y. Yano, A. Makabe, M. Yano and C.-Q. Liu. 2018.
 Nitrate is an important nitrogen source for Arctic tundra plants. PNAS 115:3398-3403
2. S. Toyoda, N. Yoshida, and K. Koba. 2017.
 Isotopocule analysis of biologically produced nitrous oxide in various environments. Mass Spectrometry Reviews 36(2): 135-160.

3. T. Nunoura, Y. Takaki, M. Hirai, S. Shimamura, A. Makabe, O. Koide, T. Kikuchi, J. Miyazaki, K. Koba, N. Yoshida, M.Sunamura, and K. Takai. 2015.
 Hadal biosphere: Insight into the microbial ecosystem in the deepest ocean on Earth. PNAS 112: E1230-E1236

4. Y. Fang, K. Koba*, A. Makabe, C. Takahashi, W. Zhu, T. Hayashi, A. A. Hokari, R. Urakawa, E. Bai, B. Z. Houlton, D. Xi, S. Zhang, K. Matsushita, Y. Tu, D. Liu, F. Zhu, Z. Wang, G. Zhou, D. Chen, T. Makita, H. Toda, X. Liu, Q. Chen, D. Zhang, Y. Li, and M. Yoh. 2015.
 Microbial denitrification dominates nitrate losses from forest ecosystems.

PNAS 112: 1470-1474.

5. J. M. Craine, E. N. J. Brookshire, M. D. Cramer, N. J. Hasselquist, K. Koba, E. Marin-Spiotta, and L. Wang. 2015.
 Ecological interpretations of nitrogen isotope ratios of terrestrial plants and soils.Plant and Soil 396(1): 1-26.


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