Mark has been with the RCD since 2013 and has a B.S. in Landscape Architecture from Cal Poly San Luis Obispo. He has been involved in environmental work beginning with native plant landscaping then giving composting workshops and ecological gardening classes. Since 1998, Mark has worked in the Guadalupe-Nipomo Dunes, where he eliminates invasive plant species and enhances opportunities for rare plants to thrive. Mark also writes a monthly invasive species report for Obispoensis a publication of the San Luis Obispo chapter of the California Native Plant Society.