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. 2005-01-31
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. 2007-03-31
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 2017-04-30
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. 2001-01-31
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. 2002-05-31
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. 2011-01-31
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. 2012-08-31
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. 2002-02-13
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. 2002-02-21
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. 2004-01-23
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. 2001-02-15
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. 2014-02-20
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 2010-09-10
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. 2012-08-16
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. 2007-03-15
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. 2017-02-24
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) 2015-01-24
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. 2002-12-21
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. 2003-09-08
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. 2003-12-31
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. 2004-06-30
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. 2005-06-30
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. 2013-12-31
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. 2007-06-30
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. 2018-09-30
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. 2012-01-31