Associate Editor, Estuaries, Estuarine Research Federation, 1998-2007.
Associate Editor, Frontiers in Ecology and Environment, ESA, 2002-2006.
Secretary, International Association for Great Lakes Research, 1983-1986.
Board of Directors, American Society for Limnology and Oceanography, 1987-1990.
Board of Directors, Great Lakes Observing System, 2009-2014