Research

  • Integrated Landscape Monitoring in the Puget Sound. (2006-present). USGS FRESC, USGS Washington Water Center, USGS Coastal and Marine Geology Program, USGS Pacific Geographic Science Team, University of Washington.  Collaborators: Guy Gelfenbaum, Mark Munn, Vivian Queija, and Liora Van Natta.
  • Multi-layered, interdisciplinary mapping of a riverine ecosystem in a wilderness stream. (2005-present). Idaho State University, USGS FRESC, University of Washington, Boise State University, U.S. Forest Service, Freshwaters Illustrated, U.S. Environmental Protection Agency (EPA), National Park Service. Collaborators: Colden Baxter, Joe Ebersole, Kate Dwire, Jeremy Monore, Jen Pierce, and Joe Giersch.
  • Classification of coldwater thermal refugia and salmonid habitat in the Pacific Northwest. (2005-present) U.S. Environmental Protection Agency (EPA), USGS FRESC. Collaborators: Joe Ebersole and Dru Keenan (EPA).
  • Longitudinal patterns of fish assemblage structure, stream habitat, and water temperature in the Lower Crooked River, Oregon. (2004-present) U.S. Bureau of Land Management (BLM), USGS FRESC. Collaborators: Doug Bateman, Michelle McSwain, David Hockman-Wert, and Bob Gresswell.
  • Physiographic and climatic associations of mountain lakes in the western conterminous USA. (2003-present) USGS FRESC. Collaborators: Gary Larson, George Lienkaemper, and Bob Hoffman.
  • Influences of riparian vegetative community composition on animal community response: Analysis of Riparian Management Alternatives and Conservation Strategies (ARMACS). (2002-present) USGS FRESC, Oregon State University, Cooperative Forest Ecosystem Research (CFER) Program. Collaborators: Bob Gresswell, Doug Bateman, David Hockman-Wert, Dave Hibbs, John Hayes, Judy Li, and Steve Perakis.
  • Effects of landscape pattern on the distribution of coastal cutthroat trout in western Oregon. (2002-present) USGS FRESC, Oregon State University, CFER. Collaborators: Bob Gresswell, Doug Bateman, and David Hockman-Wert.
  • Multiscale effects of contemporary timber harvest on aquatic biota in Hinkle Creek. (2002-present) Watershed Research Cooperative (WRC), USGS FRESC. Collaborators: Bob Gresswell, Doug Bateman, David Hockman-Wert, and Arne Skaugset.
  • Spatially explicit landscape modeling of alternative forest management scenarios in western Oregon. (2003-present) USGS FRESC, Oregon State University, CFER, BLM. Collaborators: John Cissel (BLM), David Hockman-Wert, Tom Atzet, and Ed Reilly (BLM).
  • Spatial patterns and habitat associations of larval lampreys in relation to stream morphology and channel structure in the Middle Fork John Day River. (1999-2001) Confederated Tribes of the Umatilla Indian Reservation. Collaborator: Dave Close.
  • Hydrologic, geomorphic, and ecological connectivity in Columbia River Watersheds: Implications for endangered salmonids. (1996-2000) NSF-EPA Partnership for Environmental Research, Water and Watersheds Program. Oregon State University. Collaborators: Hiram Li, Bruce McIntosh, Bob Beschta, Boone Kauffman, Judy Li, Colden Baxter, Kris Wright, and Kate Dwire.
  • Modeling, monitoring and restoring water quality and habitat in Pacific Northwestern Watersheds. (1994-2000) Environmental Protection Agency and the Intelligence Community's Environmental Program, Governmental Applications Task Force. USDA Forest Service, Pacific Northwest Research Station and Oregon State University. Collaborators: Doug Norton, Jim Sedell, Bruce McIntosh, Russ Faux, Nathan Poage, and others.
  • Aerial survey of the Upper McKenzie River: Thermal infrared and color videography. (1999) USDA Forest Service. Watershed Sciences, Inc. Collaborators: Bruce McIntosh and Russ Faux,
  • Thermal refugia and habitat ecology of spring chinook salmon in the John Day Basin. (1993-95) Bonneville Power Administration. Collaborators: Bruce McIntosh, Dave Price, and Hiram Li.

 

Teaching

  • Instructor, “Management Principles of Pacific Salmon in the Northwest” OSU STATEWIDE, Distance and Continuing Education, FW 323, 2000-2001. Department of Fisheries and Wildlife, Oregon State University. See the course web site.
  • Instructor, “Landscape Perspectives in Fish and Wildlife Ecology” Senior Seminar, FW 407, Fall 1999. Department of Fisheries and Wildlife, Oregon State University.  See the course outline and reading list.

 

Curriculum vitae

  • Download a printable version (PDF).

 

Publications

Refereed articles and book chapters

  • Gresswell, R. E., C. E. Torgersen, and D. S. Bateman. 2006. A spatially explicit approach for evaluating relationships among coastal cutthroat trout, habitat, and disturbance in headwater streams. Pages 457-471 in R. M. Hughes, L. Wang, and P. W. Seelbach, editors. Influences of landscapes on stream habitats and biological assemblages. American Fisheries Society, Symposium 48, Bethesda, Maryland. (PDF)
  • Torgersen, C.E., C.V. Baxter, H.W. Li., and B.A. McIntosh. 2006. Landscape influences on longitudinal patterns of river fishes: Spatially continuous analysis of fish-habitat relationships. Pages 473-492 in R. M. Hughes, L. Wang, and P. W. Seelbach, editors. Influences of landscapes on stream habitats and biological assemblages. American Fisheries Society, Symposium 48, Bethesda, Maryland. (PDF)
  • Ganio, L.M., C.E. Torgersen, and R.E. Gresswell. 2005. A geostatistical approach for describing spatial pattern in stream networks. Frontiers in Ecology and the Environment 3(3): 138-144. (PDF).
  • Bateman, D. S., R. E. Gresswell, and C. E. Torgersen.  2005. Evaluating single-pass catch as a tool for identifying spatial pattern in fish distribution.  Journal of Freshwater Ecology 20(2): 335-345. (PDF).
  • Torgersen, C.E., R.E. Gresswell, and D.S. Bateman. 2004. Pattern detection in stream networks: Quantifying spatial variability in fish distribution. In: GIS/Spatial Analyses in Fishery and Aquatic Sciences (T. Nishida, P. J. Kailola, and C.E. Hollingworth, eds.), pp. 405-420, Fishery and Aquatic GIS Research Group, Saitama, Japan. (PDF).
  • Torgersen, C.E., and D.A. Close. 2004. Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (Lampetra tridentata) at two spatial scales. Freshwater Biology 49(5): 614-630. (PDF).
  • Beschta, R.L., B.A. McIntosh, and C.E. Torgersen. 2003. Comment: Perspectives on water flow and the interpretations of FLIR images. Journal of Range Management 56(1): 97-101. (PDF).
  • Fausch, K.D., C.E. Torgersen, C.V. Baxter, and H.W. Li. 2002. Landscapes to riverscapes: Bridging the gap between research and conservation of stream fishes. BioScience 52(6): 483-498. (PDF).
  • Torgersen, C.E., R.N. Faux, B.A. McIntosh, N.J. Poage, and D.J. Norton. 2001. Airborne thermal remote sensing for water temperature assessment in rivers and streams. Remote Sensing of Environment 76(3): 386-398. (PDF).
  • Torgersen, C.E., D.M. Price, H.W. Li, and B.A. McIntosh. 1999. Multiscale thermal refugia and stream habitat associations of chinook salmon in northeastern Oregon. Ecological Applications 9: 301-319. (PDF).
  • Torgersen, C.E., J.A. Jones, A.R. Moldenke, and M.P. LeMaster. 1995. The spatial heterogeneity of soil invertebrates and edaphic properties in an old growth forest stand in western Oregon. In: The significance and regulation of soil biodiversity (H.P. Collins, G.P. Robertson, and M.J. Klug, eds.), pp. 225-236, Kluwer Academic Publishers, Dordrecht, Netherlands. (PDF).

 

Proceedings papers

  • Poage, N., C. Torgersen, D. Norton, and M. Flood. 1996. Application of thermal infrared (FLIR) and visible videography to the monitoring and restoration of salmonid habitat in the Pacific Northwest. In: Proceedings of the Sixth Forest Service Remote Sensing Applications Conference (J.D. Greer, ed.), pp. 376-379, American Society for Photogrammetry and Remote Sensing, Denver, CO. (PDF).
  • Torgersen, C.E., N.J. Poage, M. A. Flood, D.J. Norton, and B.A. McIntosh. 1996. Airborne thermal remote sensing of salmonid habitat for restoration planning in Pacific Northwestern watersheds. In: Proceedings of the Watershed 96 Conference, Baltimore, MD, pp. 812-814, Water Environment Federation, Alexandria, VA. (PDF).
  • Torgersen, C.E. D.M. Price, H.W. Li, and B.A. McIntosh. 1995. Thermal refugia and chinook salmon habitat in Oregon: Applications of airborne thermal videography. In: Proceedings of the 15th Biennial Workshop on Color Photography and Videography (P. Mausel, ed.), pp. 167-171, American Society for Photogrammetry and Remote Sensing, Terre Haute, IN. (PDF).

 

Technical reports / information exchange

  • Torgersen, C.E., D.P. Hockman-Wert, J.H. Cissel, C.D. Sheridan, and J.H. Guetterman. 2004. Modeling responses of forest landscapes to alternative management scenarios in the East Fork Coquille watershed, Oregon. Final report to the BLM Coos Bay District, North Bend, Oregon. (PDF).
  • Torgersen, C.E., J.H. Cissel, D.P. Hockman-Wert, C.D. Sheridan, and J.H. Guetterman. 2004. Modeling alternative landscapes in western Oregon. CFER News 4(3): 1-5. (PDF).
  • Torgersen, C.E., R.E. Gresswell, and D.S. Bateman. 2003. Detecting spatial patterns in coastal cutthroat trout distribution with single- versus multiple-pass electrofishing: Tradeoffs in precision and accuracy. CFER News 3(1): 2-5. (PDF).
  • Gresswell, R.E., C.E. Torgersen, and D.S. Bateman. 2002-2005. Cooperative Forest Ecosystem Research (CFER) Program Annual Report. Oregon State University, Corvallis, Oregon.
  • Faux, R.N., H. Lachowsky, P. Maus, C.E. Torgersen, and M.S. Boyd. 2001. New approaches for monitoring stream temperature: Airborne thermal infrared remote sensing. Inventory and Monitoring Project Report,  Integration of Remote Sensing. Remote Sensing Applications Laboratory, USDA Forest Service, Salt Lake City, Utah. (PDF).
  • Torgersen, C., R. Faux, and B. McIntosh. 1999. Aerial survey of the Upper McKenzie River: Thermal infrared and color videography. Report to the USDA, Forest Service, McKenzie River Ranger District, Blue River, Oregon. (PDF).

 

Dissertation

  • Torgersen, C.E. 2002. A geographical framework for assessing longitudinal patterns in stream habitat and fish distribution. Ph.D. dissertation. Oregon State University, Corvallis. (PDF).

 

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