Subject
- Riparian ecology -- Oregon21
- Riparian ecology -- Coast Ranges9
- Riparian ecology -- Oregon -- Willamette River Valley4
- Riparian ecology -- Oregon -- John Day River Watershed3
- Riparian ecology -- Oregon, Western3
- Riparian forests -- Ecology -- Oregon3
- Vegetation dynamics -- Oregon3
- Forest canopy ecology -- Coast Ranges2
- Forest canopy ecology -- Oregon2
- Riparian ecology -- Blue Mountains (Or. and Wash.)2
- Riparian forests -- Ecology -- Coast Ranges2
- Riparian plants -- Oregon -- Catherine Creek2
- Stream ecology -- Oregon2
- Tualatin River Watershed (Or.)2
- Wildlife habitat improvement -- Oregon2
- Agricultural conservation -- Oregon1
- Alder -- Grande Ronde River (Or. and Wash.)1
- Alder -- Oregon -- Catherine Creek1
- Alder -- Oregon -- Meadow Creek (Union County)1
- Amphibians -- Coast Ranges -- Habitat1