Forest Ecosystems

David A. Perry is a professor of ecosystem studies at Oregon State University. He is lead editor of Maintaining Long-Term Productivity of Pacific Northwest Ecosystems. Ram Oren is a professor of ecology and chair of the Environmental Sciences and Policy Division of the Nichols School of the Environment and Earth Sciences at Duke University. Stephen C. Hart is a professor at Northern Arizona University's School of Forestry.Stephen C. Hart is the author of 'Forest Ecosystems', published 2008 under ISBN 9780801888403 and ISBN 0801888409.