Cooperative Fish and Wildlife Research Units Program: Oregon
Education, Research and Technical Assistance for Managing Our Natural Resources

Oregon Project


Avian Predation on Juvenile Salmonids in the Lower Columbia River

February 1997 - January 2019


Personnel

Participating Agencies

  • DOE - Bonneville Power Administration

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 Publications Publication Date
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. January 2005
Anderson, S. K., D. D. Roby, D. E. Lyons, and K. Collis. 2007. Relationship of Caspian tern foraging ecology to nesting success in the Columbia River estuary, Oregon USA. Estuarine, Coastal, and Shelf Science 73:447-456. March 2007
Collar, S., D. D. Roby, and D. E. Lyons. Top-down and bottom-up interactions influence nesting success at the world's largest colony of Caspian terns (Hydroprogne caspia) in the Columbia River estuary. | Abstract April 2017
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. January 2001
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. May 2002
Lyons, D.E., and D.D. Roby. 2011. Validating growth and development of a seabird as an indicator of food availability: Captive-reared Caspian Tern chicks fed ad libitum and restricted diets. Journal of Field Ornithology 82: 88-100. January 2011
Technical Publications Publication Date
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. August 2012
Presentations Presentation Date
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. February 2002
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. February 2002
Anderson, S.K., D.D. Roby, D.E. Lyons, and K. Collis. Anchovy for dinner again? Importance of marine forage fishes to the nesting success of Caspian terns in the Columbia River estuary. Annual Meeting of the Pacific Seabird Group, La Paz, Baja California Sur, Mexico, 23 January 2004. January 2004
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. February 2001
Collar, S., D.D. Roby, and D.E. Lyons. 2014. Top-down and bottom-up interactions influence reproductive success at a Caspian Tern super-colony. 41st Annual Meeting of the Pacific Seabird Group, Juneau, Alaska. February 2014
Collar, S., D.D. Roby, and D.E. Lyons. A non-invasive technique of colony mapping for colonially nesting seabirds. 1st World Seabird Conference, Victoria, B.C., Canada. POSTER September 2010
Collar, S., D.D. Roby, and D.E. Lyons. There goes the neighborhood: Site fidelity and group adherence at a Caspian Tern (Hydroprogne caspia) colony facing habitat reduction and increased predation. Fifth North American Ornithological Conference, Vancouver, B.C., 16 August. August 2012
Lyons, D.D., D. D. Roby, J.Y. Adkins, and L.H. Reinalda. When do alternative prey buffer avian predation on juvenile salmonids in the Columbia River estuary? 9th Annual Salmon Ocean Ecology Meeting, Hatfield Marine Science Center, Newport OR. March 2007
Bailey, O.A., D.D. Roby, D.E. Lyons, Y. Suzuki, P.J. Loschl, and K.S. Bixler. 2017. Kid-friendly: Factors affecting breeding success of Caspian Terns on East Sand Island in the Columbia River estuary. 44th Annual Meeting of the Pacific Seabird Group, Tacoma, Washington. February 2017
Bailey, O.A., Y. Suzuki, D.D. Roby, D.E. Lyons, P.J. Loschl, T.J. Lawes, and K.S. Bixler. 2015. Site fidelity and inter-colony movements of known-age Caspian Terns. Willamette Valley Bird Symposium, Corvallis, OR, 24 January. (Poster) January 2015
Wright, S.K., D.D. Roby, and R.G. Anthony. 2002. California brown pelicans nesting in the Pacific Northwest?: Potential for a major northward expansion in breeding range. Annual meeting of the Pacfic Seabird Group, Santa Barbara CA. December 2002
Wright, S.K., D.D. Roby, and R.G. Anthony. 2003. A major new roost site for endangered California brown pelicans in the Columbia River estuary. Joint annual meeting of the Northwest Section and the Oregon Chapter of The Wildlife Society. September 2003
Theses and Dissertations Publication Date
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. December 2003
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. June 2004
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. June 2005
Collar, S. 2013. Site fidelity and colony dynamics of Caspian terns nesting at East Sand Island, Columbia River estuary, Oregon, USA. M.S. in Wildlife Science, Oregon State University, Corvallis, OR. 125 pp. December 2013
Myers, A.M. 2007. Evaluating the fatty acid signature technique for studies of diet composition in piscivorous waterbirds. M.S. thesis, Oregon State University, Corvallis, OR. 107 pp. June 2007
Bailey, O.A. 2018. Extrinsic and intrinsic factors associated with reproductive success of Caspian Terns (Hydroprogne caspia) at East Sand Island, Columbia River estuary. M.S. thesis, Oregon State University, Corvallis, Oregon. 142 pp. September 2018
Suzuki, Y. 2012. Piscivorous colonial waterbirds in the Columbia River estuary: Demography, dietary contaminants, and management. Ph.D. dissertation, Oregon State University, Corvallis, OR. 204 pp. January 2012