Research Natural Areas
Hale Ridge RNA
Hale Ridge RNA is on the Mendocino National Forest near Upper
Target element: knobcone pine (Pinus attenuata)
Secondary target(s): serpentine species
General Technical Report Chapter for this RNA (pdf file)
Hale Ridge Publications and Reports
Johnson, D. R. 1995. Establishment record for Hale Ridge Research
Natural Area within Mendocino National Forest in Lake County, California.
Unpublished report on file, Pacific Southwest Research Station,
Download the *.pdf
Keeler-Wolf, T. 1987. An ecological survey of the proposed Hale
Ridge research natural area, Mendocino National Forest, Lake County,
California. Unpublished report on file, Pacific Southwest Research
Station, Albany, Calif.