Walter G. Duffy

Photo Walt Duffy

 

Adjunct Professor
Cooperative Research Unit Leader


Education

  • B.S. Fisheries & Wildlife, Michigan State University, 1973
  • M.S. Fisheries & Wildlife, Michigan State University, 1975
  • PhD. Fisheries & Wildlife, Michigan State University, 1985


Courses taught at HSU

  • FISH 480/580 Restoring River Fisheries


Current Research Interests

  • Ecosystem energetic processes
  • Ecology of Pacific salmon
  • Watershed restoration


Selected Publications

  • Bell, E. and W. G. Duffy. 2007.  Previously undocumented two-year freshwater residency of juvenile coho salmon in California.  Transactions of the American Fisheries Society 136:966-970.

  • Bell, E., W. G. Duffy, and T. D. Roelofs. 2001. Fidelity and survival of juvenile coho salmon in response to a flood. Transactions of the American Fisheries Society 130:450-458.

  • Duffy, W. G.  1998. Population dynamics, production and prey consumption by fathead minnows in prairie wetlands: a bioenergetics approach. Canadian Journal of Fisheries and Aquatic Sciences 54: 1-13.

  • Duffy, W. G. 1999. Wetlands of Yellowstone and Grand Teton National Parks: aquatic invertebrate diversity and community structure. Wetland Aquatic Invertebrates: Ecology and Management 733-756.

  • Duffy, W. G. and E. P. Bjorkstedt.  Demographics of coastal cutthroat trout, Oncorhynchus clarki clarki, in Prairie Creek, California.  Proceedings of the 2nd Conference on Sea Run Cutthroat Trout, Port Townsend, WA, 29 Sept. – 1 Oct., 2005.  Accepted 2007.

  • Gleason, R. A., N. H. Euliss Jr., D. E. Hubbard, and W. G. Duffy. 2002. The invertebrate egg banks of restored, natural and drained wetlands in the Prairie Pothole region of the United States. Wetlands 24:562-572.

  • Gleason, R. A., N. H. Euliss Jr., E. E. Hubbard, and W. G. Duffy. 2002. Effects of sediment load on emergence of aquatic invertebrates and plants from wetland soil egg and seed banks. Wetlands 23:26-34.

  • Pope, K. L., J. L. Brown, W. G. Duffy, and P. H. Michaletz. 2001. A caloric based evaluation of diet indices. Environmental Biology of Fishes 61: 329-339.

  • Railsback, S. F., R. H. Lamberson, B. C. Harvey, and W. G. Duffy. 1999. Movement rules for spatially explicit individual-based stream fish models. Ecological Modeling 123: 73-89.

  • Railsback, S. F., R. H. Lamberson, B. C. Harvey, and W. G. Duffy. 2001. Reply to discussion on movement rules for individual-based models of stream fish. Ecological Modeling 143: 249-251.

  • Takekawa, J. Y., A. K. Miles, D. H. Schoelhamer, N. D. Athearn, M. K. Saiki, W. G. Duffy, S. Kleinschmidt, G. G. Shellenbarger and C. A. Jannusch. 2006. Trophic structure of avian communities across a salinity gradient in evaporation ponds of the San Francisco Bay estuary. Hydrobiologia (2006) 567:307-327.

  • Zimmer, K. D., M. A. Hanson, M. G. Butler, and W. G. Duffy. 2001. Influence of fathead minnows on nutrient cycling, nutrient partitioning and ecosystem structure in prairie wetlands. Achives fur Hydrobiologia 150: 411-433.

  • Zimmer, K. D., M. A. Hanson, M. G. Butler, and W. G. Duffy. 2001. Size distribution of aquatic invertebrates in two prairie wetlands, with and without fish, with implications for community production. Freshwater Biology 46: 1-14.

Contact:  Walter.Duffy@humboldt.edu

Please visit personal web site for more information.