Subject
- Arthropoda -- Effect of habitat modification on1
- Clearcutting -- Environmental aspects1
- Cover crops -- Environmental aspects -- Oregon -- Willamette River Valley1
- Debris avalanches -- Oregon -- Longitudinal studies1
- Flood damage -- Oregon -- Longitudinal studies1
- H.J. Andrews Experimental Forest (Or.) -- Watersheds1
- Microbial ecology -- Oregon -- Willamette River Valley1
- Nitrogen cycle -- Oregon -- H.J. Andrews Experimental Forest1
- Old growth forest ecology1
- Soil ecology -- Oregon -- Willamette River Valley1
- Water -- Oregon -- H.J. Andrews Experimental Forest -- Nitrogen content1