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CEGL000977 Quercus turbinella - Garrya flavescens - Arctostaphylos pungens Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Sonoran Scrub Oak - Ashy Silktassel - Pointleaf Manzanita Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This scrub oak shrubland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs from approximately 2100 to 2450 m (6950-8100 feet) elevation, typically on very steep (30-40°), mid and upper sideslopes. This association strongly favors southern exposures. Soils are rapidly-drained sandy loams derived from various geologic parent materials. This vegetation type often forms large expanses across these environments. This association is characteristically dense and typically supports 60-80% shrub cover. Rich and varied assemblages of chaparral shrub species dominate this association, and the particular composition of species varies somewhat among stands. Dominant shrub species can exist as either tall or short shrubs depending upon site conditions. One major manifestation of this association occurs when Quercus gambelii, Amelanchier utahensis, and Garrya flavescens codominate the thick shrub layer. Another major phase can be seen when Quercus turbinella and Arctostaphylos pungens codominate the short-shrub stratum, and the other shrub species mentioned occur as associates. The full continuum of variation can be seen in many stands. Robinia neomexicana and Cercocarpus montanus occasionally add to the diversity of the tall-shrub stratum. Symphoricarpos spp. sometimes occurs along the ground; however, due to the preponderance of the taller layers, dwarf-shrubs are otherwise absent from this community. Overall, the understory is poorly-developed, but patches of Poa fendleriana occur in most stands. A variety of different species, including Penstemon linarioides, Hymenopappus filifolius, Comandra umbellata, Arabis spp., Packera multilobata, Castilleja linariifolia, and Penstemon rostriflorus, can occur.
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 is currently described from Grand Canyon National Park in Arizona. It is also reported from Utah. More survey work is needed to fully document its global range.
Nations: US
States/Provinces: AZ, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683555
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G4
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.2 Temperate Grassland & Shrubland Formation | F012 | 2.B.2 |
| Division | 2.B.2.Ng Western North American Interior Chaparral Division | D061 | 2.B.2.Ng |
| Macrogroup | 2.B.2.Ng.2 Sonoran Scrub Oak - Pointleaf Manzanita - Desert Ceanothus Warm Interior Chaparral Macrogroup | M091 | 2.B.2.Ng.2 |
| Group | 2.B.2.Ng.2.b Sonoran Scrub Oak - Desert Ceanothus - Mexican Manzanita Chaparral Group | G281 | 2.B.2.Ng.2.b |
| Alliance | A0793 Sonoran Scrub Oak Chaparral Alliance | A0793 | 2.B.2.Ng.2.b |
| Association | CEGL000977 Sonoran Scrub Oak - Ashy Silktassel - Pointleaf Manzanita Shrubland | CEGL000977 | 2.B.2.Ng.2.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Quercus turbinella - Arctostaphylos pungens Association (Warren et al. 1982)
- 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.
- 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.
- Kemp, K. 1965. A study of litter and vegetation on the upper chaparral area of central Arizona. Unpublished thesis, University of Arizona, Tucson. 79 pp.
- 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.
- Warren, P. L., K. L. Reichhardt, D. A. Mouat, B. T. Brown, and R. R. Johnson. 1982. Vegetation of Grand Canyon National Park. Cooperative National Park Resources Studies Unit Technical Report 9. Tucson, AZ. 140 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.