Skip to Main Content
Horse Rock Ridge Research Natural Area: guidebook supplement 27.Author(s): Alan B. Curtis
Source: Gen. Tech. Rep. PNW-GTR-571. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 30 p
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
Download Publication (2.36 MB)
DescriptionHorse Rock Ridge Research Natural Area (HRR RNA) was established in June 1995 to protect the best remaining example of a grassy “bald” (treeless area) on the western margin of the Cascade Range and its associated botanical, wildlife, and scenic values. This bald is surrounded by old-growth Pseudotsuga menziesii/Tsuga heterophylla (Douglas-fir/western hemlock) forest in the Coburg Hills on the eastern edge of the Willamette Valley in western Oregon. The site is recognized for its considerable diversity of plant species that includes both Willamette Valley plants as well as plants more often found in the montane zone of the Cascade Range. There are also several species present at the site that are normally found east of the Cascade Range. This guidebook describes the area, environment, biota, disturbance history, research, and access.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCurtis, Alan B. 2003. Horse Rock Ridge Research Natural Area: guidebook supplement 27. Gen. Tech. Rep. PNW-GTR-571. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 30 p
KeywordsResearch natural area, vegetation types, vascular plants, lichens, liverworts, mosses, birds, mammals, mollusks, amphibians, reptiles
- Wild horse and burro considerations [Chapter 8]
- Horse Ridge Research Natural Area: guidebook supplement 37.
- Effects of feral horse herds on plant communities across a precipitation gradient
XML: View XML