Dave Perry, Forest Science, OSU Professor Emeritus, Ecosystems Studies. Research interests focus on the relationship between ecosystem structure and processes, with particular emphasis on the role of biodiversity in ecosystem stability, including genetic diversity within tree populations, factors influencing herbivory in forests, impacts of harvest and site preparation on soil nutrients and biota, the functional role of mycorrhizal fungi in forest ecosystems, restoration ecology, landscape process, the response of ecosystems to global climate change, and ecosystem management. He is author of the textbook, Forest Ecosystems. SNR 530 Ecological Principles of Sustainable Natural Resources