Thomas Rosswall is Executive Director of the International Council for Science (ICSU). Formerly he has been Director of the International Foundation for Science (IFS), Rector (President) of the Swedish University of Agricultural Sciences, Director of the International START Secretariat, Executive Director of the International Geosphere-Biosphere Programme (IGBP) and Professor of Water in Nature and Society at the Universities of Stockholm and Linköping, Sweden. He has also served on numerous international and national committees and boards and is an elected member of six learned societies including the Royal Swedish Academy of Sciences, Academia Europaea and the Academy of Sciences for the Developing World.
Thomas Rosswall has been instrumental in the development of microbial ecology, both nationally and internationally. His leadership in three major ecosystem projects has been important not only for ecosystem sciences in Sweden, but also for the development of international networks, which have fostered intensive collaboration between scientists in many countries. His work on carbon and nitrogen cycling has ranged from microcosm studies to the globe and has linked deep process understanding to modelling efforts of entire systems at all scales.