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CEGL000027 Abies lowiana / Symphoricarpos mollis Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Sierra White Fir / Creeping Snowberry Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This is a coniferous community found at cool, dry sites. It is widely distributed in Oregon''s Klamath-Siskiyou region and may also occur in adjacent California. Stands are found at elevation of 1070-1980 m (3500-6500 feet) on a variety of slopes and aspects. Surprisingly little is documented about the soils character except that they are deep and often of granodiorite, gabbros or of mixed volcanic origin. Abies lowiana and Pseudotsuga menziesii are the most common species in the tree canopy cover. Symphoricarpos mollis is the most common shrub. No other shrub or herb species has more than 2% cover.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Atzet et al. (1996) inventoried sixteen sites on National Forest land.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Abies lowiana (= Abies concolor var. lowiana) and Pseudotsuga menziesii are the most common species in the tree canopy cover averaging 35% and 24%, respectively. Symphoricarpos mollis is the most common shrub and averages 4% cover. No other shrub or herb species has more than 2% cover.

Dynamics:  No Data Available

Environmental Description:  This is a coniferous community found at cool, dry sites. It is widely distributed in Oregon''s Klamath-Siskiyou region and may also occur in adjacent California. Stands are found at elevation of 1070-1980 m (3500-6500 feet) on a variety of slopes and aspects. Surprisingly little is documented about the soils character except that they are deep and often of granodiorite, gabbros or of mixed volcanic origin.

Geographic Range: This type is only known from the Klamath Mountains in Oregon, where it is fairly widely distributed. It has not been reported from California, although habitat is present there for it.

Nations: US

States/Provinces:  CA?, OR




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = White Fir - Ponderosa Pine/ Snowberry / Starwort CW-S3-13 (Hopkins 1979a)

Concept Author(s): M.P. Murray

Author of Description: M.P. Murray

Acknowledgements: No Data Available

Version Date: 11-26-97

  • Atzet, T. A., D. E. White, L. A. McCrimmon, P. A. Martinez, P. R. Fong, and V. D. Randall. 1996. Field guide to the forested plant associations of southwestern Oregon. Technical Paper R6-NR-ECOL-TP-17-96. USDA Forest Service, Pacific Northwest Region, Portland, OR.
  • Atzet, T., and D. L. Wheeler. 1984. Preliminary plant associations of the Siskiyou Mountains Province, Siskiyou National Forest. USDA Forest Service, Pacific Northwest Region, Portland, OR.
  • Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
  • Hopkins, W. E. 1979a. Plant associations of the Fremont National Forest. Technical Report R6-ECOL-79-004. USDA Forest Service, Pacific Northwest Region, Portland.
  • Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
  • McNeil, R .C. 1975. Vegetation and fire history of a ponderosa pine-white fir forest in Crater Lake National Park. M.S. thesis, Oregon State University, Corvallis.
  • McNeil, R. C. and D. B. Zobel. 1980. Vegetation and fire history of a ponderosa pine-white fir forest in Crater Lake National Park. Northwest Science 54:30-46.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.