Subject
- African buffalo -- Parasites -- Ecology -- South Africa -- Kruger National Park1
- African buffalo -- Parasites -- South Africa -- Kruger National Park1
- Atmospheric carbon dioxide -- Oregon -- Metolius River Watershed1
- Bird populations -- Alaska -- Prince William Sound1
- Blood -- Parasites -- South Africa -- Kruger 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 ecology -- Oregon -- Applegate River Watershed1
- Cheatgrass brome -- Great Basin1
- Exxon Valdez Oil Spill, Alaska, 1989 -- Environmental aspects1
- Fire ecology -- Oregon -- Metolius River Watershed1
- Fire ecology -- Oregon, Eastern -- Remote sensing1
- Fish communities -- Effect of water levels on -- Oregon1
- Fish communities -- Effect of water levels on -- Washington (State)1
- Fishes -- Habitat -- Oregon1
- Fishes -- Habitat -- Washington (State)1
- Floodplain ecology -- Oregon1