Long-Term Ecological Research (LTER)/AND015: Riparian Geomorphic Surface-Vegetation Relationships in the H.J. Andrews Forest

Phytosociological data (% cover, presence, live/dead tree density, basal area) were collected on randomly picked geomorphic surfaces. Multivariate techniques were used to group geomorphic surfaces and plant communities and to test the strength of association between surfaces and communities.

Cores were taken from the largest trees and shrubs on the surface to determine time since last major disturbance or creation. The Andrews Forest is in the western Cascade Range of Oregon in the 15,800-acre drainage basin of the Lookout Creek, a tributary of Blue River and the McKenzie River. The area elevation ranges from 1350 feet to 5340 feet and contains excellent examples of Pacific Northwest conifer forests, wildlife, and ecosystems.