Subject
- Stream ecology -- Oregon4
- Caspian tern -- Ecology -- Columbia River Estuary (Or. and Wash.)3
- Double-crested cormorant -- Food -- Columbia River Estuary (Or. and Wash.)3
- Aquaculture2
- Caspian tern -- Food -- Columbia River Estuary (Or. and Wash.)2
- Chinook salmon2
- Chinook salmon -- Columbia River Estuary (Or. and Wash.)2
- Chinook salmon -- Migration -- Columbia River Estuary (Or. and Wash.)2
- Coho salmon2
- Colonial birds -- Ecology -- Columbia River Estuary (Or. and Wash.)2
- Double-crested cormorant -- Ecology -- Columbia River Estuary (Or. and Wash.)2
- Fish stock assessment -- Mathematical models2
- Fishery resources -- Hatchery vs. wild stocks2
- Geomorphology -- Coast Ranges2
- Geomorphology -- Oregon2
- Ghost shrimps -- Age determination -- Oregon -- Yaquina Bay2
- Habitat (Ecology) -- Oregon2
- Lipofuscins2
- Logging -- Environmental aspects -- Coast Ranges2
- Logging -- Environmental aspects -- Oregon2