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Contact Us: Our Faculty & Staff

Amy WilstermannRandall Van Dragt
Preserve Director



B.S. in Biology, Calvin College
M.S. in Wildlife Science, Cornell University
Ph.D. in Biology, University of Rhode Island

Professional Experience
Management of the preserve and it programs are under the direction of Randy Van Dragt, a Calvin College biology professor. Dr. Van Dragt is an ecologist with interests in ecosystem management and restoration. He has designed and supervised construction of several nature preserves, and for almost thirty years has directed the Calvin College Ecosystem Preserve. For nearly two decades, he has also taught restoration ecology at the Au Sable Institute of Environmental Studies. He is currently directing the restoration of a native prairie in Central Whidbey Island, Washington and is the board chair of Pacific Rim Institute.

Research and Professional Interests
Dr. Van Dragt's research topics are Pacific lowland prairie restoration, plant succession on abandoned oil well sites in northern Michigan, and forest succession of the Calvin College Ecosystem Preserve. They are funded by Au Sable Institute, The Nature Conservancy, and Calvin College.


Amy WilstermannJeanette Henderson
Program Manager



B.S. in Biology, Calvin College

Certifications in: Project Learning Tree, Project WILD, Project Wet, Growing Up WILD, Flying WILD, Aquatic WILD, Leopold Education Project

Professional Organizations: National Association of Interpretation, Association of Nature Center Administrators, West Michigan Cluster of the Stewardship Network

Professional Experience
Jeanette is responsible for the day to day management of the Ecosystem Preserve & Bunker Interpretive Center. She oversees all aspects of the education and outreach programs here, including developing interpretive curriculum, displays and programs, hiring and training Calvin students in environmental education/interpretation techniques, and teaching programs for ages Pre-K through adult.  Additional responsibilities include collaborating with academic departments across the college, and building and maintaining partnerships with other environmental community partners.

Jeanette's previous work experience includes working at the state level for Michigan Audubon directing and coordinating programs, as a summer naturalist for Michigan State Parks, and as a marine educator for the University of Georgia's Marine Education Center and Aquarium in Savannah, Georgia.


Amy WilstermannJulie Wilbourn
Department Assistant



B.S. in Marketing, Miami University

Professional Experience
Julie handles a variety of behind-the-scenes processes at the Ecosystem Preserve. She primarily registers school groups for programs, schedules spaces, and manages communications, including administering our website, publishing our e-newsletter, and assisting in the creation of various print and display pieces.

Julie's previous work experience includes project management and analysis of market research studies, as well as market analysis and product management of various manufactured products.