2009-2010 — Visiting Scientist, USDA Forest Service, Rocky Mountain Research Station, Fort Collins, CO.
2008-Present — Adjunct Member of the Graduate Faculty, Texas A&M University, College Station.
2008-Present — Fellow, Baylor University Institute for Ecological, Earth, and Environmental Sciences.
2000-Present — Full Professor, Department of Biology, Baylor University. Tenured. Member of the Graduate Faculty. Member of the Interdisciplinary Faculty in the Baylor Department of Environmental Science. Member of the Advisory Board for the Baylor Center for Applied Geographic and Spatial Research. Statistical consultant.
1994-2000 — Associate Professor, Department of Biology and Department of Environmental Studies, Baylor University. Tenured 5/94. Member of the Graduate Faculty. Member of the Advisory Boards for the Baylor Center for Applied Geographic and Spatial Research, and the Baylor Institute of Biomedical Studies. Statistical consultant.
1991-1994 — Faculty Affiliate, Department of Fishery and Wildlife Biology, Colorado State University, Fort Collins.
1987-1994 — Assistant Professor, Department of Biology and Department of Environmental Studies, Baylor University. Member of the Graduate Faculty. Statistical consultant.
1986-1987 — Lecturer, Department of Environmental Studies, Baylor University. Statistical consultant. Member of Baylor Hazardous Waste Task Force.
1985-1986 — Instructor, Department of Statistics, University of Wyoming (1-year sabbatical replacement position), Laramie. Statistical consultant.
1985 — Research Associate, Wyoming Cooperative Fish and Wildlife Research Unit, University of Wyoming, Laramie. Statistical consultant.
1981-1985 — Teaching Assistant, Department of Zoology and Physiology, and Department of Statistics, University of Wyoming, Laramie.
1980-1981 — Research Assistant, Pennsylvania Cooperative Fish and Wildlife Research Unit, Pennsylvania State University, University Park.
1978-1979 — Field Assistant, Pennsylvania Cooperative Fish and Wildlife Research Unit, Pennsylvania State University, University Park.
