Sarah Chamberlain holds dual appointments as Assistant Research Professor for Riparia, a research center in the Department of Geography and as Curator of the PAC Herbarium in the Department of Biology. She has been a member of the Penn State faculty since 1999. For Riparia, Ms. Chamberlain conducts collaborative and independent research studies on plants. Her research primarily focuses on the development and validation of plant-based bioassessment tools for wetlands in the Mid-Atlantic region. She currently directs the Mid-Atlantic Wetland Work Group, a consortium of states within the region collaborating on wetland monitoring and assessment strategies and tools. As Curator of the PAC Herbarium, she manages a collection of over 107,000 plants and seeds, conducts workshops and tours, and directs a project to digitize the Pennsylvania and Mid-Atlantic collections as part of the Mid-Atlantic Megalopolis Project. In both positions, Ms. Chamberlain has taught numerous workshops on plant identification, particularly related to grasses, sedges and rushes. She has developed a number of materials to aid in plant identification of this difficult group of plants including her recently published Field Guide to Grasses of the Mid-Atlantic. Chamberlain earned her masters degree in ecology and systematics from San Francisco State University in 1995.