Subject
- American beaver -- Coast Ranges -- Geographical distribution1
- American beaver -- Oregon -- Geographical distribution1
- Animal-plant relationships -- Coast Ranges1
- Animal-plant relationships -- Oregon1
- Carbon cycle (Biogeochemistry) -- Central America1
- Ecology -- Oregon1
- Forest canopies -- Central America -- Remote sensing1
- Forest fires -- Oregon1
- Forests and forestry -- Oregon1
- Ips -- Blue Mountains (Or. and Wash.)1
- Land use -- Central America -- Remote sensing1
- Old growth forests -- Oregon1
- Ponderosa pine -- Diseases and pests -- Blue Mountains (Or. and Wash.)1
- Ponderosa pine -- Effect of fires on -- Blue Mountains (Or. and Wash.)1
- Prescribed burning -- Blue Mountains (Or. and Wash.)1
- Prescribed burning -- Oregon1
- Soil fertility -- Oregon1
- Western pine beetle -- Blue Mountains (Or. and Wash.)1
- Wood borers -- Blue Mountains (Or. and Wash.)1
- Woodpeckers -- Food -- Blue Mountains (Or. and Wash.)1