Tommy Dalgaard is a professor and section manager at the Department of Agroecology, Aarhus University Denmark. His main research interest is in agricultural systems analysis and sustainable resource management. He holds an MSc and a PhD in Agroecology and a BSc in Agricultural Politics from the University of Copenhagen, and a diploma in research management from Copenhagen Business School. Currently he heads the DNMARK interdisciplinary research alliance, and is co-chair for the UN-ECE Task Force on Reactive Nitrogen.