Subject
- Riparian ecology -- Oregon2
- Stream ecology -- Oregon2
- Stress (Physiology)2
- Alien plants -- Effect of fires on -- Hawaii -- Hawaii Volcanoes National Park1
- American beaver -- Ecology -- Alaska -- Copper River Delta1
- American beaver -- Habitat -- Alaska -- Copper River Delta1
- Antibacterial agents -- Pharmacokinetics1
- Aquatic insects -- Predators of -- Ecology -- Oregon -- Alsea River Watershed1
- Aquatic insects -- Seasonal variations -- Oregon -- Alsea River Watershed1
- Aquatic invertebrates -- Ecology -- Oregon -- H.J. Andrews Experimental Forest1
- Aquatic invertebrates -- Effect of habitat modification on -- Oregon -- H.J. Andrews Experimental Forest1
- Aquatic invertebrates -- Effect of logging on -- Coast Ranges1
- Aquatic invertebrates -- Effect of logging on -- Oregon1
- Aquatic invertebrates -- Habitat -- Coast Ranges1
- Aquatic invertebrates -- Habitat -- Oregon1
- Big sagebrush -- Ecology -- California -- Lava Beds National Monument1
- Big sagebrush -- Oregon -- Hart Mountain National Antelope Refuge1
- Big sagebrush -- Washington (State) -- Hanford Reach National Monument1
- Biomass -- Utah -- Great Salt Lake1
- Bird populations -- West (U.S.) -- Geographical distribution1