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CEGL000145 Pinus contorta / Ceanothus velutinus Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Lodgepole Pine / Snowbrush Ceanothus Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This is a dry, well-drained forest occurring on all aspects; slopes range from 2 to 15% on flat, concave, or convex slopes, benches, plateaus or lower slopes of buttes and escarpments. It appears to be a post-fire forest type. All stands sampled are recent regeneration from known fires. Elevation range is 1463 to 2085 m (4800-6841 feet). Soils are sandy loam to loamy coarse sand, that can be derived from pumice and lava colluvium, or granitics. This forest type is represented by stands of pole or immature Pinus contorta with 10-40% cover. Few other trees may be present, such as Pinus ponderosa in Oregon. The shrub layer can be limited but is usually clearly defined with a dominance of Ceanothus velutinus with trace to 70% cover. Other shrub species that may be present include Amelanchier alnifolia and Spiraea betulifolia in Wyoming, or Arctostaphylos patula, Arctostaphylos nevadensis, or Purshia tridentata in Oregon. Herbaceous layer species include Carex geyeri, Carex rossii, and Calamagrostis rubescens. Elymus elymoides, Chamerion angustifolium, Chimaphila umbellata, and Fragaria virginiana may also be present in trace amounts.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: This forest type is represented by stands of pole or immature Pinus contorta with 10-40% cover. Few other trees may be present, such as Pinus ponderosa in Oregon. The shrub layer may be limited but is usually clearly defined with a dominance of Ceanothus velutinus with trace to 70% cover. Other shrub species that may be present include Amelanchier alnifolia and Spiraea betulifolia in Wyoming, or Arctostaphylos patula, Arctostaphylos nevadensis, or Purshia tridentata in Oregon. Herbaceous layer species include Hesperostipa comata (= Stipa comata), Carex geyeri, Carex rossii, Calamagrostis rubescens, Elymus elymoides (= Sitanion hystrix), Chamerion angustifolium (= Epilobium angustifolium), Chimaphila umbellata, and Fragaria virginiana.

Dynamics:  This is a post-fire, early-seral forest association.

Environmental Description:  This is a dry, well-drained forest occurring on all aspects; slopes range from 2 to 15% on flat, concave, or convex slopes, benches, plateaus or lower slopes of buttes and escarpments. It appears to be a post-fire forest type. All stands sampled are recent regeneration from known fires. Elevation range is 1463 to 2085 m (4800-6841 feet). Soils are sandy loam to loamy coarse sand, that can be derived from pumice and lava colluvium, or granitics.

Geographic Range: This association is known from central Oregon, north-central Montana, and western Wyoming.

Nations: US

States/Provinces:  MT, OR, WY




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G4

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Lodgepole Pine / Snowbrush - Manzanita (Volland 1976) [(p.45)]

Concept Author(s): Western Ecology Group

Author of Description: G. Kittel

Acknowledgements: No Data Available

Version Date: 01-03-05

  • 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.
  • Cogan, D., K. Varga, and G. Kittel. 2005. USGS-NPS Vegetation Mapping Program: Grand Teton National Park and John D. Rockefeller, Jr. Memorial Parkway. Final Project Report 2002-2005 Vegetation Mapping Project. Technical Memorandum 8260-06-02. USDI Bureau of Reclamation, Denver, CO. 87 pp. plus Appendixes A-F.
  • 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.
  • MTNHP [Montana Natural Heritage Program]. 2002b. List of ecological communities for Montana. Montana Natural Heritage Program, Montana State Library, Helena, MT.
  • Scow, K. L., and L. D. Culwell. 1986. Vegetation inventory of the Mill Gulch Extension Area, Little Rocky Mountains, Montana. Unpublished report prepared for Hydrometrics, Inc., Helena, MT. 26 pp. plus appendices.
  • Volland, L. A. 1976. Plant communities of the central Oregon pumice zone. USDA Forest Service R-6 Area Guide 4-2. Pacific Northwest Region, Portland, OR. 113 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.