Stef de Haan has 25 years of experience in agricultural R&D with emphasis on community-level mapping of climate change impacts, agrobiodiversity, land use, food systems, and human nutrition in mountain regions and vulnerable communities. Stef works for the International Potato Center (CIP) and coordinates the Andean Initiative with emphasis on agrobiodiversity conservation and use, participatory climate action, and sustainable food systems. He previously worked with the Dutch development cooperation in the Andean region, International Potato Center in Peru, and International Center for Tropical Agriculture in Vietnam. He holds a PhD in biosystematics and an MSc in agroecology from Wageningen University.