Provided here are in-season weekly reports and background information on a study investigating the impacts of piscivorous waterbirds (i.e., gulls, terns, and cormorants) on the survival of juvenile salmonids in the lower Columbia River. These data were collected by researchers working with Oregon State University, Columbia River Inter-Tribal Fish Commission, and Real Time Research.
Weekly reports on managed Caspian terns are provided to monitor and evaluate the 2000 Caspian Tern Management Plan (Click here to see map of study area). Other data on unmanaged bird populations (i.e., double-crested cormorants and glaucous-winged/western gulls) are being collected by the researchers, but are not provided here.
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