
The GTCD staff and board are passionate and motivated. Our expertise ranges from ecology and aquatic insects to education, resource development, and more! Learn more about individual staff and board members below.
GTCD Staff
- Treenen Sturman, Executive Director
- Jessica Beachy, Invasive Species Network Technician
- Tammy Durfee, Development Coordinator
- Garrett Coggon, Safe Food & MAEAP Technician
- Christine Crissman, Conservation Director
- Michelle Handke, Education Assistant
- Matthew Bertrand, Invasive Species Specialist
- Colleen Masterson-Bzdok, Education Director
- Cindy Retherford, Education Specialist
- Steve Largent, Boardman River Program Coordinator
- Dan Busby, Water Stewardship Program Coordinator
- Kath Zatorski, Administrative Assistant
- Ben Purdy, Parkland Program Coordinator
- Robin Christensen, Invasive Species Program Coordinator
- John Gessner, Marketing & Outreach Specialist
- Lorraine Austin, GTSI Program Coordinator



