Jari Niemelä is Professor of Urban Ecology and Dean of the Faculty of Biological and Environmental Sciences at the University of Helsinki. He has a PhD degree in zoology (ecology) from the University of Helsinki. He has been working in various research teaching positions since 1980s. He also spent three years as a Postdoctoral researcher in Canada (University of Alberta, Edmonton) in the early 1990s. He has had his professorship in urban ecology since year 2000. Professionally, Niemelä is broadly interested in issues related to sustainable urban development. His own expertise is in ecology, biodiversity, and conservation biology, but his research team also addresses issues related to the integration of natural and social sciences. Niemelä is also interested and active in the science-policy interface, i.e. in transferring research results to the society to inform planners, decision-makers etc.