Joan C Hagar
I am a Research Wildlife Biologist at the U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center. My research focuses on providing information to support management and conservation of native wildlife species and their habitats.
My research interests include forest and wildlife ecology, conservation of biodiversity in managed forests, conservation and management of native Willamette Valley ecosystems, and riparian songbird response to floodplain restoration. Much of my work has focused on the biologically and economically important conifer forests of the PNW that are intensively managed for multiple uses and represent a large area in public domain. My research projects are designed to increase understanding of how conifer forest management affects biodiversity across a range of spatial and temporal scales, and to provide science-based information that can be directly applied in an adaptive management framework.
Professional Experience
2003-Present: Research Wildlife Biologist, USGS, Forest and Rangeland Ecosystem Science Center, Corvallis, OR
1998-2004: Graduate Research Assistant, Department of Forest Science, Oregon State University, Corvallis, OR
1993-1998: Sr. Faculty Research Assistant, Department of Forest Science, Oregon State University, Corvallis, OR
Education and Certifications
Ph.D., Forest Ecology, Oregon State University, Corvallis, OR (2004)
M.S., Forest Ecology, Oregon State University, Corvallis, OR (1993)
B.S., Biological Aspects of Conservation, University of Wisconsin, Madison, WI (1984)
Affiliations and Memberships*
2004-Present: Affiliate Faculty, Oregon State University, Forest Ecosystems and Society
2008-Present: Graduate Faculty, Oregon State University, Master of Natural Resources Program
American Ornithological Society
Association of Field Ornithologists
Oregon Birding Association
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades
Use of non-alpine anthropogenic habitats by American pikas (Ochotona princeps) in western Oregon, USA
Geostatistical modeling of riparian forest microclimate and its implications for sampling
Estimating riparian understory vegetation cover with beta regression and copula models
Thresholds in forest bird occurrence as a function of the amount of early-seral broadleaf forest at landscape scales
Young Stand Thinning and Diversity Study: Response of Songbird Community One Decade Post-Treatment
Assessment and management of dead-wood habitat
Pygmy rabbit surveys on state lands in Oregon
Rainforest birds: A land manager's guide to breeding bird habitat in young conifer forests in the Pacific Northwest
Wildlife species associated with non-coniferous vegetation in Pacific Northwest conifer forests: A review
Arthropod prey of Wilson's Warblers in the understory of Douglas-fir forests
Arthropod prey of Wilson's Warblers in the understory of Douglas-fir forests
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades
Use of non-alpine anthropogenic habitats by American pikas (Ochotona princeps) in western Oregon, USA
Geostatistical modeling of riparian forest microclimate and its implications for sampling
Estimating riparian understory vegetation cover with beta regression and copula models
Thresholds in forest bird occurrence as a function of the amount of early-seral broadleaf forest at landscape scales
Young Stand Thinning and Diversity Study: Response of Songbird Community One Decade Post-Treatment
Assessment and management of dead-wood habitat
Pygmy rabbit surveys on state lands in Oregon
Rainforest birds: A land manager's guide to breeding bird habitat in young conifer forests in the Pacific Northwest
Wildlife species associated with non-coniferous vegetation in Pacific Northwest conifer forests: A review
Arthropod prey of Wilson's Warblers in the understory of Douglas-fir forests
Arthropod prey of Wilson's Warblers in the understory of Douglas-fir forests
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government