Mitsuru Tada PhD is a Visiting Research Fellow in the Biodiversity Division, National Institute for Environmental Studies in Tsukuba, Japan. His previous position was the Senior Researcher and the Senior Research Associate until March, 2025. He majored in biology in Waseda University and applied entomology in University of Tokyo Graduate School. After he started working at the research institute from 1986, his papers were published in Environmental science journals, such as Japanese Journal of Limnology, Ecology and Environmental Toxicology related to organisms/ecosystems and chemicals.