David V. Buchanan

• Northern squawfish (Ptychocheilus oregonensis) predation on juvenile salmonids in the Willamette River basin
• Relative susceptibility of four stocks of summer steelhead (Salmo gairdneri) to infections of ceratomyxosis and bacterial diseases found in the Willamette River
• Status of Oregon's bull trout
• Status of Oregons bull trout, distribution, life history, limiting factors, management considerations, and status
• Willamette River steelhead