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CEGL003065 Opuntia bigelovii Shrubland

The U.S. National
Vegetation Classification
Type Concept Sentence:
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Common (Translated Scientific) Name: Teddy-bear Cholla Shrubland
Colloquial Name:
Hierarchy Level: Association
Type Concept: This cholla shrubland association occurs in northern Arizona, southeastern California and southern Nevada. It is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs on xeric sideslopes at 600 to 675 m (2000-2200 feet) elevation, on moderate (10-30°), south- or southeast-facing slopes. Soils are rapidly-drained sandy loams or clays that usually lie on top of shale or quartzite. Vegetation is characterized by the dominance of the short shrub Opuntia bigelovii. Tall shrubs such as Fouquieria splendens do occur but are sparse and infrequent. Opuntia bigelovii is invariably accompanied by Encelia farinosa in the short-shrub layer. Scattered Krameria erecta, Opuntia acanthocarpa, Ferocactus cylindraceus, and Ephedra fasciculata also occur fairly frequently. Opuntia basilaris consistently occurs in a very sparse dwarf-shrub stratum. Graminoids are virtually non-existent in this association. Forbs are similarly sparse; however, species such as Plantago ovata, Phacelia sp., Amsinckia menziesii, and Eriogonum inflatum occur sporadically at very low individual covers.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features:
Classification Comments: No Data Available
Similar NVC Types:
Physiognomy and Structure: No Data Available
Floristics:
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This shrubland association occurs in northern Arizona, southeastern California and southern Nevada. More survey work is needed to fully document its global range.
Nations: US
States/Provinces: AZ, CA, NV?
US Forest Service Ecoregions (1994/1995)
Domain Name:
Division Name:
Province Name: Colorado Plateau Semi-Desert Province
Province Code: 313    Occurrence Status: Confident or certain
Section Name: Sonoran Desert Section
Section Code: 322B     Occurrence Status: Confident or certain
US Forest Service Ecoregions (2007)
Domain Name:
Division Name:
Province Name: American Semi-Desert and Desert Province
Province Code: 322    Occurrence Status: Confident or certain
Section Name: Mojave Desert Section
Section Code: 322A     Occurrence Status: Confident or certain
Omernik Ecoregions:
Confidence Level: Low
Confidence Level Comments:
Grank: G4?
Greasons:
Concept Lineage:
Predecessors:
Obsolete Names:
Obsolete Parents:
Synonomy: = Cylindropuntia bigelovii (Sawyer et al. 2009) [33.050.01]
= Cylindropuntia bigelovii Association (Evens et al. 2014)
= Cylindropuntia bigelovii Shrubland Association (Evens et al. 2012)
= Larrea tridentata - Opuntia bigelovii / Ambrosia spp. Association (Malusa 2003)
< Opuntia bigelovii Shrubland Alliance (Sawyer and Keeler-Wolf 1995) [33.050.00]
Concept Author(s): M.S. Reid
Author of Description: R. Meszaros
Acknowledgements:
Version Date: 06Jan2017
References:
  • Evens, J. M., D. Roach-McIntosh, and D. Stout. 2012. Vegetation descriptions for Joshua Tree National Park. Unpublished report submitted to USDI, National Park Service, Mojave Desert Inventory and Monitoring Network. California Native Plant Society, Sacramento, CA.
  • Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA. [http://science.nature.nps.gov/im/units/MOJN/rpts_pubs/rpts_pubs_main.cfm]
  • 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.
  • Malusa, J. 2003. Vegetation of the Cabeza Prieta National Wildlife Refuge, Arizona. Report submitted to Organ Pipe Cactus National Monument, NPS Cooperative Agreement CA1248.00.002. TA. UA2-71, NPS Cooperative Agreement 1443CA860197006. USGS Southwest Biological Science Center, Sonoran Desert Field Station, University of Arizona, Tucson.
  • 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.
  • Sawyer, J. O., and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento. 471 pp.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.