Osamu Saito is the Principal Policy Researcher at the Institute for Global Environmental Strategies (IGES). As an expert in the field of biodiversity and ecosystem services, he has been working on the interlinkages between ecological, human, and social systems through sustainability science approaches. His research experiences include socio-ecological studies on the ecosystem services provided by traditional rural production landscapes (Satoyama) in both Japan and other Asian countries. He has also been actively promoting various activities for the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) as a lead author of both regional and global assessments. He has been a managing editor of the Sustainability Science journal (Impact Factor 2019: 5.301) published by Springer Nature since 2011.