Subject
- Chinook salmon -- Behavior -- Columbia River Estuary (Or. and Wash.)1
- Chinook salmon -- Effect of stress on -- Columbia River Estuary (Or. and Wash.)1
- Chinook salmon -- Migration -- Columbia River Estuary (Or. and Wash.)1
- Ecological disturbances -- Pacific Ocean1
- El Nino Current1
- Fisheries -- Climatic factors -- Pacific Ocean1
- Oregon -- Biography -- Indexes1
- Steelhead (Fish) -- Behavior -- Columbia River Estuary (Or. and Wash.)1
- Steelhead (Fish) -- Effect of stress on -- Columbia River Estuary (Or. and Wash.)1
- Steelhead (Fish) -- Migration -- Columbia River Estuary (Or. and Wash.)1