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CEGL005359 Cercocarpus ledifolius / Quercus gambelii Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Curl-leaf Mountain-mahogany / Gambel Oak Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland association is currently described from Bryce Canyon National Park in Utah. It is also reported from Grand Canyon National Park in Arizona. Additional global information will be added as it becomes available. This woodland occurs on a mesatop. The sites are gentle (3° slope), occur between 2434 and 2435 m in elevation, and are oriented to the east or west. The ground surface has low exposure of bare soil, high cover of litter, low cover of small rocks, and sparse cover of downed wood. Litter depths range from 0.1-2.6 cm. Soils are rapidly drained silty clay loams or loams derived from new alluvium. Total vegetation cover is dense (70-84% cover) and is characterized by the canopy tree Cercocarpus ledifolius that ranges in height from 2-5 m and the tall shrub Quercus gambelii. The remaining canopy layer provides sparse cover and includes Juniperus osteosperma. The herbaceous layer is moderately diverse floristically and provides sparse to moderate cover. The medium-tall bunchgrasses Leymus salinus and Pseudoroegneria spicata provide low to moderate cover. Forbs include Lappula occidentalis, Packera multilobata, and Chaetopappa ericoides.

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: Total vegetation cover is dense (70-84% cover) and is characterized by the canopy tree Cercocarpus ledifolius that ranges in height from 2-5 m and the tall shrub Quercus gambelii. The remaining canopy layer provides sparse cover and includes Juniperus osteosperma. The herbaceous layer is moderately diverse floristically and provides sparse to moderate cover. The medium-tall bunchgrasses Leymus salinus and Pseudoroegneria spicata (= Elymus spicatus) provide low to moderate cover. Forbs include Lappula occidentalis, Packera multilobata (= Senecio multilobatus), and Chaetopappa ericoides.

Dynamics:  No Data Available

Environmental Description:  This woodland occurs on a mesatop. The sites are gentle (3° slope), occur between 2434 and 2435 m in elevation, and are oriented to the east or west. The ground surface has low exposure of bare soil, high cover of litter, low cover of small rocks, and sparse cover of downed wood. Litter depths range from 0.1-2.6 cm. Soils are rapidly drained silty clay loams or loams derived from new alluvium.

Geographic Range: This woodland association is currently only known from Bryce Canyon National Park, Utah, and Grand Canyon National Park, Arizona. Additional range information will be added as it becomes available.

Nations: US

States/Provinces:  AZ, UT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: Upgraded to Standard during screening.

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Cercocarpus ledifolius / Quercus gambelii Woodland [Provisional] (Tendick et al. 2011b)

Concept Author(s): Tendick et al. (2011b)

Author of Description: M. Smith and J. Von Loh

Acknowledgements: No Data Available

Version Date: 04-06-12

  • Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
  • Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
  • Tendick, A., G. Kittel, J. Von Loh, P. Williams, D. Cogan, J. Coles, A. Wight, G. Wakefield, and A. Evenden. 2011b. Vegetation classification and mapping project report, Bryce Canyon National Park. Natural Resource Technical Report NPS/NCPN/NRTR--2011/442. National Park Service, Fort Collins, CO.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.