Roy is a postdoctoral scholar with the Natural Capital Project at Stanford University with a focus on urban ecosystem services. He helps develop spatial models and applications for Urban InVEST, with a current focus on recreation and health-related ecosystem services. Roy obtained his Ph.D. at Wageningen University, the Netherlands, developing spatial models for ecosystem services and biodiversity and ecosystem accounting methods. After his research at Wageningen University worked as an ecosystem service researcher at the Dutch National Institute for Public Health and Environment where he developed spatial modelling tools for (urban) ecosystem services and at Statistics Netherlands to develop national ecosystem accounts. Roy holds an MSc diploma in Climate Studies from Wageningen University and a BSc diploma in Environmental Sciences from Utrecht University, the Netherlands.