1981-present Reviewer for Fish Red Data Book, International Union for Conservation of Nature and Natural Resources

1982-1983 INHS representative to Association of Systematic Collections

1984-present Member, Illinois Endangered Species Technical Advisory Committee on Invertebrates

1984-1985 Member, Editorial Board for Copeia, publication of the American Society of Ichthyologists and Herpetologists

1985-present Member, Illinois Nature Preserves Commission's Technical Advisory Committee on Management

1986 Invited panelist on National Forum on Biodiversity Teleconference, Urbana, IL, 24 September

1986-1994 Illinois Nongame Wildlife Conservation Fund Advisory Committee

1987-1991 Member, Editorial Board for Copeia, publication of the American Society of Ichthyologists and Herpetologists

1987-present Elected to Board of Governors, American Society of Ichthyologists and Herpetologists

1987-present Member, Editorial Board of the Illinois Biological Monographs

1991 Member, American Society of Ichthyologists and Herpetologists Time, Place and Program Committee

1991 Elected Treasurer, American Society of Ichthyologists and Herpetologists\

1991 Member, Indiana Mollusk and Crustacean Technical Advisory Committee

1992-1996 Elected to Board of Directors, North American Native Fishes Association

1993 Named representative of American Society of Ichthyologists and Herpetologists to Association of Systematics Collections

1994 Named representative of Illinois Natural History Survey to Association of Systematics Collections

1995-present Named delegate to International Union for the Conservation of Nature

1999 Local Committee for National Meeting of North American Native Fishes Association, Urbana, 19-22 August