Takuma Watari, PhD
Contact: watari.takuma(at)


Takuma is a tenure-track researcher at the National Institute for Environmental Studies, (NIES), Japan and an Adjunct Fellow at the University of Technology Sydney, Australia. He received his PhD from the University of Tokyo in 2021, focusing on the global metal cycles in a carbon-constrained world. He is currently leading several research projects funded by the Japan Society for the Promotion of Science and is a core researcher in the “Material Flow Innovation Research Program,” a five-year research project underway at the Material Cycles Division of NIES.

Research areas

Industrial Ecology, Circular Economy, Energy Systems


Adjunct Fellow

University of Technology Sydney, Australia

Tenure-Track Researcher

National Institute for Environmental Studies, Japan

Junior Research Associate

National Institute for Environmental Studies, Japan


Dean’s Award (University of Tokyo, 2022)

Best Presentation Award for Master Thesis (Kyoto University, 2019)

Japan Business Federation Global Scholarship (Japan Business Federation, 2018)

1st Place of Yamaoka Award (Yamaoka Memorial Foundation, 2018)

The 6th Best Presentation Award for Students (Japan Society of Energy and Resources, 2018)

External links