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CEGL000528 Populus tremuloides - Abies lasiocarpa / Pedicularis racemosa Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Quaking Aspen - Subalpine Fir / Parrot''s-beak Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This forest type has been described from the southern parts of the Wyoming and Salt River mountain ranges in western Wyoming. Most stands are found on cool, moderately steep, northerly slopes and are surrounded by conifer forests. The vegetation consists of a tree overstory codominated by Populus tremuloides and Abies lasiocarpa var. lasiocarpa, with a sparse undergrowth dominated by Pedicularis racemosa. Picea engelmannii and Pseudotsuga menziesii var. glauca may also grow in the overstory. Traces of Symphoricarpos oreophilus, Shepherdia canadensis, Paxistima myrsinites, Arnica cordifolia, and Carex rossii also may grow beneath the trees. This seems to be a seral type that is replaced by Abies lasiocarpa forest.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association is based on data from just 2 plots (and, apparently, reconnaissance from additional stands) in western Wyoming. This information was collected in a comprehensive survey of Populus tremuloides vegetation in western Wyoming and, therefore, merits confidence, but a description of Populus tremuloides types in the area from western Wyoming westward to western Nevada and southward to southern Utah does not mention this association.

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

Physiognomy and Structure: No Data Available

Floristics: The vegetation consists of a tree overstory codominated by Populus tremuloides and Abies lasiocarpa var. lasiocarpa, with a sparse undergrowth dominated by Pedicularis racemosa. Picea engelmannii and Pseudotsuga menziesii var. glauca may also grow in the overstory. Traces of Symphoricarpos oreophilus, Shepherdia canadensis, Paxistima myrsinites, Arnica cordifolia, and Carex rossii also may grow beneath the trees.

Dynamics:  This seems to be a seral type that is replaced by Abies lasiocarpa forest.

Environmental Description:  Most stands are found on cool, moderately steep, northerly slopes and are surrounded by conifer forests.

Geographic Range: This association apparently is restricted to the southern Salt River and Wyoming mountain ranges in west-central Wyoming. It is described only in the classification of aspen community types on the Bridger-Teton National Forest of western Wyoming (Youngblood and Mueggler 1981), and is not mentioned in the regionwide classification of aspen community types in the Intermountain region (Mueggler 1988).

Nations: US

States/Provinces:  WY




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G2

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: < Abies lasiocarpa / Pedicularis racemosa Habitat Type (Steele et al. 1983)
= Populus tremuloides - Abies lasiocarpa / Pedicularis racemosa Community Type (Youngblood and Mueggler 1981)

Concept Author(s): G.P. Jones

Author of Description: G.P. Jones

Acknowledgements: No Data Available

Version Date: 11-26-97

  • 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.
  • Mueggler, W. F. 1988. Aspen community types of the Intermountain Region. General Technical Report INT-250. USDA Forest Service, Intermountain Research Station, Ogden, UT. 135 pp.
  • Steele, R., S. V. Cooper, D. M. Ondov, D. W. Roberts, and R. D. Pfister. 1983. Forest habitat types of eastern Idaho - western Wyoming. General Technical Report INT-144. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 122 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.
  • Youngblood, A. P., and W. F. Mueggler. 1981. Aspen community types on the Bridger-Teton National Forest in western Wyoming. Research Paper INT-272. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 34 pp.