- 2017 – Eastern Massasauga Conservation and Coordination Meeting, Carlyle, Illinois. Status of the Eastern Massasauga in Illinois.
- 2016 – Blanding’s & Wood Turtle Conservation Symposium, Westborough, Massachusetts. Blanding’s Turtle conservation and management in Illinois.
- 2015 – Annual IDNR Division of Natural Heritage Retreat, Springfield, Illinois. Controlled burning and amphibians and reptiles – a hot topic.
- 2013 – Midwest Herpetological Symposium, Peoria, Illinois. Ecology and conservation of the Eastern Massasauga through long-term study.
- 2011 – Biology of the Rattlesnakes Symposium, Tucson, Arizona. Demography and life history of the Eastern Massasauga: long–term study at the southern range limit.
- 2010 – Chicago Wilderness Blanding’s Turtle Workshop. Brookfield Zoo, Brookfield, Illinois. Population Biology of Emydoidea blandingii: Challenges for Conservation.
- 2008 – United States Fish and Wildlife Service: Ten–year status assessment of the Eastern Massasauga, East Lansing, Michigan. The Massasauga Saga: Summary of the Biology of Sistrurus catenatus. (Co–presented with Richard Seigel and Bruce Kingsbury.
- 2008 – Meeting of Michigan Eastern Massasauga Working Group. East Lansing, Michigan. Population viability and demography of the Eastern Massasauga: a risk assessment.
- 2007 – Reintroduction and translocations of wildlife: challenges and strategies for wildlife managers, a workshop. Lincoln Park Zoo, Chicago, Illinois. Monitoring turtles and snakes: methods, considerations, and uses.
- 2006 – Illinois State Museum Seminar Series, Springfield, Illinois. Ecology and conservation of the Eastern Massasauga (Sistrurus catenatus).
- 2005 – 66th Annual Midwest Fish and Wildlife Conference, Amphibian and Reptile Conservation Symposium, Grand Rapids, Michigan. A turtle’s pace: Conservation strategies for Midwestern turtle species. Co–authored with W. J. Banning and C. A. Phillips.
- 2004 – 3rd Annual Illinois Wilds Institute for Nature – Reptiles and Amphibians, Cache River, Illinois. Life history and ecology of the Eastern Massasauga.
- 2004 – Champaign Area Society of Herpetoculturists, Champaign, Illinois. An ecological portrait of a critically imperiled species: The Eastern Massasauga (Sistrurus c. catenatus) in Illinois.
- 2003 – Central Illinois Herpetological Society. Peoria, Illinois. An ecological portrait of a critically imperiled species: The Eastern Massasauga (Sistrurus c. catenatus) in Illinois.
- 2003 – Central Illinois Prairie Conference. Champaign, Illinois. An ecological portrait of a critically imperiled species: The Eastern Massasauga (Sistrurus c. catenatus) in Illinois.
- 2002 – Department of Biology, Southern Illinois University, Edwardsville, Illinois. Spatial dynamics of the Eastern Massasauga rattlesnake, Sistrurus c. catenatus and their application to reserve design and conservation.
- 2002 – Chicago Herpetological Society. Natural history of the Eastern Massasauga Rattlesnake, Sistrurus catenatus catenatus.
- 2001 – Herpetology Group. George Washington University, St. Louis, Missouri. Conservation and ecology of the Eastern Massasauga rattlesnake (Sistrurus catenatus catenatus) at Carlyle Lake. Co–presented with Dr. C. A. Phillips, D. B. Shepard, and B. C. Jellen.
- 2000 – Department of Ecology, Ethology and Evolution – Eco–lunch. University of Illinois, Urbana–Champaign, Illinois. Evidence of ontogenetic dimorphism in the chelonian shell.
- 1998 – 99th meeting of the Illinois Endangered Species Protection Board. Springfield, Illinois. Ecology of the River Cooter, Pseudemys concinna, from a southern Illinois flood–plain lake.
- 1998 – Department of Ecology, Ethology and Evolution – Eco–lunch. University of Illinois, Urbana–Champaign, Illinois. Growth modeling in turtles: assumption reduction and further advances.
