Tsutomu Kanasashi

Project researcher

Institute of Environmental Radioactivity Radioecological Transfer and Effects, Fresh Water Radioecology

Main Focus of Research

  • Radionuclide dynamics in cooling pond in Chernobyl Nuclear Power Plant.
  • Evaluation of relationship between temporal change of food contents for freshwater fish and radiocesium contamination in the fish.
  • Radiocesium dynamics in forest ecosystem.

Fields of Research

Forest science, freshwater ecosystem, environmental radioactivity


Riparian forest, headwater stream, aquatic macroinvertebrate, allochthonous organic matter

Academic Society Memberships

The Ecological Society of Japan, The Japanese Forest Society, The Japanese Society of LIMNOLOGY, The Japan Society for Analytical Chemistry

Research Overview

Allochthonous organic matter is important for headwater stream ecosystems as nutrient source. In autumn, leaf input to the stream is essential for food web in this ecosystem. I have been studying functions of the riparian forest for the leaf supply, and the relationships between riparian vegetation and headwater stream ecosystem, especially, aquatic insect community. After the Fukushima Dai-ichi Nuclear Power Plant accident, I have started research of radiocesium contaminations in forests and headwater stream ecosystems in and around Fukushima.

A few words

Radionuclide contamination due to Fukushima Dai-ichi Nuclear Power Plant accident is still important issue for freshwater and forest ecosystems, as well as other environments. Also, Chernobyl Nuclear Power Plant accident has been important one thought it happened about 25 years ago. To clarify and predict the radionuclide dynamics in Chernobyl will contribute to management of radiocesium contamination in and around Fukushima. I coporate closely with other researchers to resolve the issue.

Curriculum vitae


Degree of Agricultural Science from School of Agricultural Sciences, Nagoya University, Japan


Degree of Agricultural Science from Graduate School of Bioagricultural Sciences, Nagoya University, Japan


Postdoctoral researcher, Graduate School of Bioagricultural Sciences, Nagoya University, Japan


Postdoctoral researcher, Forestry and Forest Products Research Institute, Japan


Postdoctoral researcher, Center for Research in Isotopes and Environmental Dynamics, Tsukuba University, Japan


Postdoctoral researcher, Fukushima University