This report highlights significant research findings and accomplishments by scientists at the Pacific Northwest (PNW) Research Station during fiscal year 2008. The mission of the PNW Research Station is to generate and communicate scientific knowledge that helps people understand and make informed choices about people, natural resources, and the environment. The work featured in this report illustrates the breadth and the depth of research underway that enables the station to accomplish this mission and deliver timely information to those in the management and policy arenas.