President, International Input-Output Association (IIOA), 2004-2006.

Science Advisory Board, Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany, 2005-2008.

Managing Editor (founding), Structural Change and Economic Dynamics, Amsterdam: Elsevier, 1990- .

Editorial Board (founding), Journal of Industrial Ecology, Cambridge: MIT Press, 1997- .

Chair, Gordon Research Conference in Industrial Ecology, 2008; Vice Chair, 2006.

Scientific Advisory Board, Sustainable Europe Research Institute (SERI), 1999- .

Editorial Board, International Journal of Global Environmental Issues, Geneva: Interscience Enterprises Ltd., 2000- .

Topical Groups Committee of the International Society for Industrial Ecology, 2005- .

Advisory Group on Social Ecology for Rector, University of Klagenfurt, Austria, 2004- .

Associate Editor, Estudios de Economia Aplicada, 2003- .