Cooperative Research Units
Education, Research And Technical Assistance For Managing Our Natural Resources
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Avian Predation on Juvenile Salmonids in the Lower Columbia River

Duration

February 1997 - January 2019

Narrative

Long-term research, monitoring, and evaluation project investigating the impact of piscivorous colonial waterbirds on survival of ESA-listed salmonids from the Columbia River basin.

Research Products and Activities

Peer Reviewed Publications

  • Collis, K., D. D. Roby, D. P. Craig, B. A. Ryan, and R. D. Ledgerwood. 2001. Colonial waterbird predation on juvenile salmondis tagged with passive integrated transponders in the Columbia River estuary: vulnerability of different salmonid species, stocks, and rearing types. Transactions of the American Fisheries Society 130:385-396.
  • Collis, K., D. D. Roby, D. P. Craig, S. Adamany, J. Y. Adkins, and D. E. Lyons. 2002. Colony size and diet composition of piscivorous waterbirds on the lower Columbia River: Implications for losses of juvenile salmonids to avian predation. Transactions of the American Fisheries Society 131: 537-550.
  • Anderson, S. K., D. D. Roby, D. E. Lyons, and K. Collis. 2005. Factors affecting chick provisioning by Caspian terns nesting in the Columbia River estuary. Waterbirds 28:95-105.
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Technical Publications

  • Roby, D.D., K. Collis, D.E. Lyons, A. Evans, J.Y. Adkins, Y. Suzuki, P. Loschl, T. Lawes, K. Bixler, B. Cramer, A. Peck-Richardson, M. Hawbecker, N. Hostetter, E. Dykstra, J. Harms, W. Mashburn, J. Tennyson, N. Ventolini, R.D. Ledgerwood, and S. Sebring. 2012. Research, monitoring, and evaluation of avian predation on salmonid smolts in the lower and mid-Columbia River. Final 2011 Annual Report. Bonneville Power Administration and U.S. Army Corps of Engineers, Portland, OR. 171 pp.

Thesis

  • Anderson, S.K. 2003. Foraging ecology, colony attendance, and chick provisioning of Caspian terns (Sterna caspia) in the Columbia River estuary. M.S. thesis, Oregon State University, Corvallis, OR. 101 pp.
  • Lyons, D.E. 2004. Foraging ecology of Caspian terns and double-crested cormorants in the Columbia River estuary. M.S. thesis, Oregon State University, Corvallis, OR. 90 pp.
  • Wright, S.K. 2005. Disturbance and roosting ecology of California brown pelicans (Pelecanus occidentalis californicus) on East Sand Island in the Columbia River estuary. M.S. thesis, Oregon State University, Corvallis, OR. 106 pp.
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Presentations

  • Anderson, S.K., D.E. Lyons, and D.D. Roby. February 2001. Density-dependent foraging patterns of Caspian terns in the Columbia River estuary. Joint annual meeting of the Oregon Chapters of American Fisheries Society and The Wildlife Society.
  • Anderson, S.K., D.D. Roby, and K. Collis. Factors affecting prey capture rates by Caspian terns. Oregon Chapter of the Wildlife Society Annual Meeting, 13 February, Gleneden Beach, OR.
  • Anderson, S.K., D.D. Roby, and K. Collis. Prey type and tide stage affect prey delivery rates of Caspian terns. Pacific Seabird Group Annual Meeting, 21 February, Santa Barbara, CA.
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Current Staff

Federal Staff: 99

Masters Students: 225

Phd Students: 143

Post Docs: 53

University Staff: 247

5 Year Summary

Students graduated: 658

Scientific Publications: 1872

Presentations: 4186

 

Personnel

Funding Agencies

  • DOE - Bonneville Power Administration

Links

Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey