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CEGL002947 Populus tremuloides - Abies concolor / Poa pratensis Ruderal Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Quaking Aspen - White Fir / Kentucky Bluegrass Ruderal Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association has only been described from Zion National Park, Utah. Additional global information will be added as it becomes available. At Zion National Park, Populus tremuloides and Abies concolor are prominent in the canopy layer of this association. The shrub layer is not significant, but there may be a presence of Quercus gambelii or Symphoricarpos oreophilus. The herbaceous layer is clearly dominated by Poa pratensis (over 40% cover). Other herbaceous species that are commonly present and contribute minor cover are Lupinus argenteus, Vicia americana, Achillea millefolium, and Tragopogon dubius. This association occurs at elevations above 2133 m (7000 feet) on flat to gently sloping terrain. Soils are somewhat poorly drained clays.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association was described by Mueggler (1988) in his comprehensive report on aspen communities of the Intermountain West. Because it is a grazing-induced type, it was not recognized in the USNVC until now (2002). It is likely to be widely distributed in the mountains of Utah and Nevada and may also occur in Colorado.

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

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This association has currently only been described from Zion National Park in southwestern Utah.

Nations: US

States/Provinces:  CO?, NV, UT




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNA

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Populus tremuloides - Abies concolor / Poa pratensis Community Type (Mueggler 1988)
= Populus tremuloides - Abies concolor / Poa pratensis Semi-natural Forest (Cogan et al. 2004)

Concept Author(s): W.F. Mueggler (1988)

Author of Description: J. Thompson

Acknowledgements: No Data Available

Version Date: 04-25-17

  • Cogan, D., J. E. Taylor, and K. Schulz. 2012. Vegetation inventory project: Great Basin National Park. Natural Resource Report NPS/MOJN/NRR--2012/568. National Park Service, Fort Collins, CO. 373 pp.
  • Cogan, D., M. Reid, K. Schulz, and M. Pucherelli. 2004. Zion National Park, Utah 1999-2003. Vegetation Mapping Project. Technical Memorandum 8260-03-01. Remote Sensing and GIS Group Technical Service Center, Bureau of Reclamation, Denver, CO. Appendix F: Vegetation Association Descriptions for Zion.
  • 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.
  • Schulz, K. A., and M. E. Hall. 2011. Vegetation inventory project: Great Basin National Park. Unpublished report submitted to USDI National Park Service, Mojave Desert Inventory and Monitoring Network. NatureServe, Western Regional Office, Boulder, CO. 30 pp. plus Appendices A-H.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.