Mark joined The Nature Conservancy in 1994, fresh out of graduate school, working as a seasonal ecologist with the Conservancy in North Carolina. From 1996-2000, Mark served as the Director of Science and Stewardship in Delaware. Mark continued to migrate north in 2000, becoming the Conservancy in New Hampshire’s Director of Conservation Programs and, in 2006, its Deputy State Director. In March 2013, Mark rejoined the Conservancy as State Director for the New Hampshire program.
During his tenure, he has played catalyzing leadership roles in many landmark conservation initiatives including the effort to conserve 171,000 acres of working forest and natural areas in the Connecticut Lakes Headwaters; the development of widely used landscape conservation plans for the Ashuelot River and Coastal New Hampshire watersheds; the launch of a multi-state collaborative to protect and maintain connectivity for wildlife across the Northern Appalachians; an ambitious initiative to restore shellfish reefs to improve habitat and water quality in Great Bay estuary; and the protection and restoration of thousands of acres in the Ossipee Pine Barrens, New Hampshire's largest intact pine barrens ecosystem. In 2012, Mark was recognized by New Hampshire's conservation community for his contributions and track record, when he was awarded the Sarah Thorne Conservation Leadership Award.
Mark earned a Bachelor of Arts from Dartmouth College, and a Master of Science from the University of Michigan. He lives in Hopkinton, New Hampshire with his wife Susan and their two children. When he is not out saving nature, Mark enjoys hiking, biking, snowshoeing and skiing with his family, playing guitar, and brewing up homemade maple syrup. He also serves on the Board of Trustees of the Capitol Center for the Arts, and on the Budget Committee for the Town of Hopkinton.