Subject
- Atmospheric carbon dioxide -- Oregon -- Metolius River Watershed1
- Biological invasions -- California1
- Bird populations -- Alaska -- Prince William Sound1
- Bryophytes -- Cascade Range1
- Bryophytes -- Oregon1
- California black oak -- Oregon -- Rogue River Watershed (Klamath County-Curry County)1
- Camp sites, facilities, etc. -- Environmental aspects -- California -- Yosemite National Park1
- Carbon cycle (Biogeochemistry) -- Oregon -- Metolius River Watershed1
- Cavity-nesting birds -- Effect of fires on -- Oregon, Eastern1
- Cavity-nesting birds -- Habitat -- Oregon, Eastern -- Remote sensing1
- Ceanothus -- Effect of fires on -- Oregon -- Applegate River Watershed1
- Ceanothus -- Effect of grazing on -- Oregon -- Applegate River Watershed1
- Chaparral -- Thinning -- Oregon1
- Chaparral ecology -- Oregon -- Applegate River Watershed1
- Cheatgrass brome -- Great Basin1
- Coastal cutthroat trout -- Age -- Oregon, Western1
- Coastal cutthroat trout -- Habitat -- Oregon, Western1
- Coastal cutthroat trout -- Mortality -- Oregon, Western1
- Coastal cutthroat trout -- Oregon, Western1
- Coastal cutthroat trout -- Oregon, Western -- Growth1