Avian predation on salmonids in the Columbia River Basin

prepared by Real Time Research, Inc. and Oregon State University ; funded by U.S. Army Corps of Engineers, Bonneville Power Administration, Grant County Public Utility District/Priest Rapids Coordinating Committee, and Oregon Department of Fish and Wildlife ; editors: Daniel D. Roby, Allen F. Evans, and Ken Collis., Title from PDF cover (viewed on May 3, 2021)., This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes., Includes bibliographical references., Funded by: U.S. Army Corps of Engineers, Bonneville Power Administration, Grant County Public Utility District/Priest Rapids Coordinating Committee, and Oregon Department of Fish and Wildlife., Mode of access: Internet from the Oregon Government Publications Collection., Text in English.
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
Abstract/Description: The primary goal of this report is to assemble and summarize results from previous published and unpublished studies of avian predation in the Columbia River basin (CRB) and to present results from retrospective analyses of data from previous studies to identify long-term patterns and trends. Results of these analyses are vital for assessing the efficacy of management initiatives to reduce predation impacts on Endangered Species Act-listed juvenile salmonids by Caspian terns and double-crested cormorants in the CRB and to inform an adaptive approach that ensures that management objectives are fully achieved and sustained into the future. These analyses are also essential for evaluating how management actions have and will continue to affect populations of piscivorous colonial waterbirds in the CRB and throughout the Pacific Flyway, populations of native species that are protected by the Migratory Bird Treaty Act. Finally, we hope that this report will serve as a comprehensive repository of results from research, monitoring, and evaluation of avian predation during 1997-2019 and provide a single-source document on the topic for regional managers, stakeholders, researchers, and the public.
Subject(s): n-us-or
Salmonidae -- Effect of predation on -- Columbia River Watershed -- Evaluation
Caspian tern -- Columbia River Watershed -- Management -- Evaluation
Double-crested cormorant -- Columbia River Watershed -- Management -- Evaluation
Date Issued: March 31, 2021