Effect of sea lions on steelhead population

Oregon warns Willamette steelhead face extinction if sea lions’ feast continues (Oregonian, 8/7/2017)

Report: Sea lions push Willamette River steelhead to brink of extinction (Statesman Journal, 8/7/2017)

ODFW report: Sea lions pushing native Willamette River steelhead toward extinction (Register Guard, 8/7/2017)

Population viability of Willamette River winter steelhead: an assessment of the effect of sea lions at Willamette Falls (2017) Oregon Department of Fish and Wildlife

Lamprey research

Tagging Tiny Fish: Scientists Aim To Learn More About Lamprey Migration (KUOW, 7/28/2017)

Assessment of western Oregon adult winter steelhead and lamprey – redd surveys (annual) Oregon Adult Salmonid Inventory & Sampling Project

Oregon lampreys : natural history, status, and analysis of management issues (2002) Oregon Department of Fish and Wildlife, Fish Division