- Assistant Professor Mentoring Committees: 8 (Chair: 3)
- Faculty Senate, 1987-1991; 2002 – present
- UW Biological Sciences Division Strategic Planning Exec. Committee: 2000 – 2003.
- Madison Ecology Group: 1996 -present; Chair Activities Comm. 2005, 2006.
- UW Arboretum Committee: 2005 – present
- UW Lakeshore Nature Preserve Committee: 2006 – present
State and Local
- Wisconsin Gypsy Moth Strategic Planning Committee. 1992 – Present.
- Governor’s Council on Invasive Species. 2003-2008; Research Subcommittee Chair.
- City of Madison Habitat Stewardship Committee
National / International
- USDA CSRS Competitive Grants: Insect Pest Science Panel, 1986, 1987.
- NSF Competitive Grants: Ecology Panel, 1994-1999
- CSRS Review Team:, Univ. Minnesota , 1994; North Carolina St. Univ. 2001.
- Associate Editor, Ecology. 2001-present.
- Associate Editor, Forest Science. 1996-1998.
- National Research Council: Future of Pesticides in Pest Management in US Agric & Forestry: 1997-2000
- APHIS Steering Committee on Tree Biotechnology. 2003-2004.
- Forestry Canada Genomics Project, Strategic Advisory Board: 2005-present
- Organizer & Moderator, Internat. Symp. on Natural Enemies and Biological Control of Bark Beetles 1994
- Organizer & Moderator, Bark Beetle Genetics Workshops: 1999, 2006
- Program Committee, North Central Forest Pest Work Conference, 2005.
- Chair: Evaluation Committee of US Forest Service R&D Response to Invasive Species