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CEGL002692 Acer negundo / Brickellia (grandiflora, longifolia) Riparian Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Box-elder / (Tassel-flower Brickellbush, Splitleaf Brickellbush) Riparian Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This box-elder woodland association is currently known from Zion National Park in Utah and Grand Canyon National Park in Arizona, and the description is based on occurrences there. More survey and classification work are needed to fully characterize this type. At Zion, this association occurs on a narrow valley floor at an elevation of 1675 m (5500 feet) on sandy soils. At Grand Canyon, it occurs in drainages and along intermittent streams in the Inner Canyon. It generally occurs at 1225 to 1400 m (4100-4625 feet) elevation, but has been observed as low as 1050 m (3450 feet). It is typically found in shaded areas, on flat or very gentle slopes (up to 2°). Soils are well- to rapidly-drained sandy loams or clays that typically lie on top of limestone. This association supports a moderately dense canopy and subcanopy of Acer negundo, and a short- or dwarf-shrub layer dominated by Brickellia longifolia (Arizona) or Brickellia grandiflora (Utah). Shrubs are scarce or absent. Native graminoid cover is extremely low. Other herbaceous species present are variable and contribute minimal cover.

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: 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 and Grand Canyon National Park in northern Arizona.

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: = Acer negundo / Brickellia grandiflora Woodland [Provisional] (Cogan et al. 2004)

Concept Author(s): Cogan et al. (2004)

Author of Description: R. Meszaros and J. Thompson

Acknowledgements: No Data Available

Version Date: 04-06-12

  • 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.
  • 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.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.