USGS Forest and Rangeland Ecosystem Science Center

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Landscapes and Freshwater Systems

Principal Investigator

Torgersen, Christian E.
Supervisory Research Landscape Ecologist
Office: 206-616-1874

Federal Staff

Mejia, Francine H.
Research Ecologist


Cram, Jeremy
WA Dept. Fish & Wildlife - Research Scientist (PhD Graduate Student)
Kubo, Josh S.
Tulalip Tribes Natural Resources Department - Salmon Recovery Scientist (PhD Graduate Student)
Office: 206-616-1874
Dittbrenner, Benjamin
Tulalip Tribes Natural Resources Department - Independent Contractor (PhD Graduate Student)


Alex Thomas: Ecologist and Independent Contractor (2012-2013), Multivariate analysis of zooplankton assemblages in Mt. Rainier National Park

James Starr: MS student (2009-2012), Mountain whitefish distribution and habitat associations

Audrey Taylor: Postdoc (2009-2011), Shorebird ecology and monitoring; integrated landscape monitoring

Josh Kubo: MS student (2009-2011), Aquatic insect assemblages in alpine streams

Katie Klett, nee Murray: MS student (2009-2010), Airborne mapping of salmon redd distribution

Ryan Klett: MS student (2008-2011), Spatial patterns of fine sediment infiltration in the Yakima River

Aaron Ruesch: MS student (2008-2011), Climate change and water temperature in stream networks

Jason Walter: MS student (2007-2012), Cutthroat trout distribution in headwater stream networks

Anne Weekes: Postdoc (2007-2011), Geohydrology of glaciated alpine headwaters

Tracy Kugler: Ecologist (2007-2009), Integrated landscape monitoring

Tyler Bax: MS student (2007-2008), Watershed classification of headwater catchments

Ethan Welty: Geographer (2006-2011), Riverscape mapping and analysis

Karen Hutten: PhD student (2007-2015), Landscape disturbance on the Olympic Peninsula

Susan Priest: Student Intern in Support of Native American Relations (SISNAR) (2014), Using beavers to restore headwaters in the Skykomish River watershed, WA

David Bailey: Student Intern in Support of Native American Relations (SISNAR) (2014), The Beaver Project: Experiences of a USGS SISNAR intern

David Hagopian: Student Intern in Support of Native American Relations (SISNAR) (2015), Effects of beaver reintroductions on large woody in headwater streams in the Skykomish River watershed, WA

Samantha Greene: Postdoc (2014-2015), Effects of thinning in riparian forests on stream temperature

Nicoleta Cristea: Contractor (2013-2015), Thermal IR remote sensing of rivers on the Olympic Peninsula, WA

Aimee Fullerton: PhD student (2011-2016), Thermal heterogeneity and salmon in Pacific Northwest rivers

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