Current Activities

• Urban Forestry Commission, City of Portland: Chair 2010-2012

Selected Past Activities

• Member-Editorial Board, Local Environment, 1999-2007
• Chair, Geography Department Graduate Admissions and Awards Committee, 2000-2011.
• Member, Portland State University Student Conduct Committee, 2000-07, 2008-11; Chair, 2003-07, 2009-11.
• Board of Directors, North American Cartographic Information Society (NACIS)
• Member, "Portland / Olmsted 2003 Celebration" Committee.
• Editorial Board, Cartographic Perspectives, quarterly journal of the North American Cartographic Information Society, 1998-2000.
• Urban Forestry Commission, City of Portland, 1992-2001, 2009; Chair, 1997-2001, 2010-12.
• Board of Directors, Oregon Community Trees, 1991-2001.
• Steering Committee, Green City Data Project, 1991-99.
• President, Oregon Academy of Science, 1987.
• Editor, Newsletter of the Columbia River Region Chapter, American Society for Photogrammetry and Remote Sensing, 1986-87.
• Secretary-Treasurer, Columbia River Region Chapter, American Society for Photogrammetry and Remote Sensing, 1985-86.
• Co-Chair, Geography Section, Oregon Academy of Science (1984-86, 2004-7).