Subject
- Ash (Plants) -- Diseases and pests -- Oregon -- Willamette River Valley1
- Ash (Plants) -- Oregon -- Willamette River Valley1
- Cavity-nesting birds -- Effect of fires on -- Oregon, Eastern1
- Cavity-nesting birds -- Habitat -- Oregon, Eastern -- Remote sensing1
- Ecological disturbances1
- Ecosystem management1
- Emerald ash borer -- Oregon -- Willamette River Valley1
- Fire ecology -- Oregon, Eastern -- Remote sensing1
- Forest conservation1
- Forest dynamics -- Oregon -- Willamette River Valley1
- Forest management -- Philosophy1
- Habitat (Ecology) -- Oregon, Eastern -- Remote sensing1
- Hospitals -- Administration -- Evaluation1
- Hospitals -- Quality control1
- Lewis woodpecker -- Effect of fires on -- Oregon, Eastern1
- Lewis woodpecker -- Habitat -- Oregon, Eastern -- Remote sensing1
- Plant communities -- Oregon -- Willamette River Valley1
- Silvicultural systems1
- Snags (Forestry) -- Oregon, Eastern -- Remote sensing1
- Wetland plants -- Conservation -- Oregon -- Willamette River Valley1