For more information on species & ecosystem science:

Wildlife Science

Fish Science

Habitat Science


Project Leads


Vander Haegen, Matthew, Ph.D., Senior Research Scientist and Eastside Research Team Leader


Research Focus
Shrubsteppe ecology, avian population dynamics, small mammal ecology

Ph.D., University of Maine
M.S., University of Massachusetts
B.S., University of Massachusetts

University Affiliations
Affiliate Associate Professor of Wildlife Ecology, University of Washington

Matthew Vander Haegen, Ph.D.
Senior Research Scientist and Eastside Research Team Leader

Dr. Vander Haegen joined WDFW in 1994 and has since focused his research activities on issues related to wildlife populations and habitats in sagebrush-steppe and oak woodland communities. He has 27 years of experience studying wildlife populations and habitat associations in forested and rangeland ecosystems, working previously as a Research Wildlife Biologist for the U.S. Forest Service in Maine. Matt's current work includes studies of western gray squirrel population ecology and the potential of Conservation Reserve Program lands to aid in the conservation of shrubsteppe and grassland wildlife. As a member of the graduate faculty at the University of Washington, Matt works with graduate students to help address questions of management concern. He is a Certified Wildlife Biologist.

Current Research

Selected Publications