Horse Ridge Research Natural Area.
By: Reid Schuller and Ron Halvorson.
Contributors: Halvorson, Ron.; Pacific Northwest Research Station (Portland, Or.)
Series: General technical report PNW -- GTR-771; General technical report PNW -- 771.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 2008
Place of publication: Portland, OR
Language: eng
Number of pages: 25
Subjects: Research natural areas -- Oregon -- Linn County; Natural resources management areas -- Oregon -- Linn County; Ecological surveys -- Oregon -- Linn County
Other titles: Federal research natural areas in Oregon and Washington, a guidebook for scientists and educators.
Description: Horse 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.
Notes: Cover title.

"October 2008."

Includes bibliographical references (p. 13-17).

Also available via Internet.