Colony size and diet composition of piscivorous waterbirds on the lower Columbia River: implications for losses of juvenile salmonids to avian predation.

Author(s)
Collis, K., Roby, D.D., Craig, D.P., Adamany, S., Adkins, J.Y. and Lyons, D.E.
Volume
131
Issue
3
Start Page Number
537
Final Page
550

Datapoints

Displaying 1 - 2 of 2 datapoints.
Species: Double-crested Cormorant (Phalacrocorax auritus)
Exposure Endpoint Type Endpoint Description Endpoint Value Sample Size Units Life Cycle Stage Specific Location Countries Type
Dietary Composition Percent by mass from adult foregut and chick regurgitation samples Herring, shad: 0.6, Peamouth/Pikeminnow: 24.0, Sucker: 5.8, Smelt: 0.3, Salmonid: 45.5, Stickleback: 5.0, Sculpin: 8.0, Surfperch: 0.3, Flounder: 8.5, Other: 1.8 206 % Both Adults and Juveniles Rice Island/Channel Markers USA Exposure Factor Datasets
Dietary Composition Percent by mass from adult foregut and chick regurgitation samples Herring, shad: 27.8, Peamouth/Pikeminnow: 0.7, Sucker: 4.7, Smelt: 7.6, Salmonid: 15.9, Stickleback: 2.1, Sculpin: 9.2, Surfperch: 7.3, Flounder: Pacific sand lance: 1.8, Flounder: 9.8 Other: 1.3 128 % Both Adults and Juveniles East Sand Island USA Exposure Factor Datasets

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