Print Report

CEGL005820 Arctostaphylos patula Sierran Chaparral Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Greenleaf Manzanita Sierran Chaparral Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This shrubland association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. It is likely that this association ranges throughout the Sierra Nevada and perhaps elsewhere in montane California. Stands are found at low to mid elevations (1495-2530 m [4900-8300 feet]) on mid to high portions of slopes with all aspects. The slopes tend to be linear and moderately steep to abrupt (10-70°). This association is found on moderately deep to deep soils and occasionally on shallow soils. Soils are poorly drained to well-drained with textures ranging from stony and gravelly to loam from sedimentary and granitic parent materials. Although fires in this type can be small due to resistance to ignition, they can support catastrophic fires once they get started. The unvegetated surface is made up of litter, wood and bare soil. Disturbance in the form of invasion by exotics, logging, improper burning regime, and road and trail construction occur in low to high intensity. Most stands are the result of fire or other natural or unnatural process. Many stands could support conifer woodland or forest with long intervals between fires or other disturbance processes. This association forms open to moderately dense stands dominated by Arctostaphylos patula. Often found in this association are Abies lowiana, Calocedrus decurrens, Quercus kelloggii, and Chamaebatia foliolosa. Occasionally, Pinus jeffreyi, Quercus kelloggii, and Apocynum androsaemifolium are present. A variety of other species present in this association may include Carex multicaulis, Ceanothus parvifolius, Ceanothus cordulatus, Chamaesyce serpyllifolia, Lupinus breweri, and Prunus emarginata. Stands of this association are variable in their disturbance regimes. Some are clearly seral to forest types, and others are edaphically controlled, probably persisting from 50 to more than 100 years at least without being invaded by conifers.

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: This association forms open to moderately dense stands dominated by Arctostaphylos patula. Often found in this association are Abies lowiana (= Abies concolor var. lowiana), Calocedrus decurrens, Quercus kelloggii, and Chamaebatia foliolosa. Occasionally, Pinus jeffreyi, Quercus kelloggii, and Apocynum androsaemifolium are present. A variety of other species present in this association may include Carex multicaulis, Ceanothus parvifolius, Ceanothus cordulatus, Chamaesyce serpyllifolia, Lupinus breweri, and Prunus emarginata. Stands of this association are variable in their disturbance regimes. Some are clearly seral to forest types, and others are edaphically controlled, probably persisting from 50 to more than 100 years at least without being invaded by conifers.

Dynamics:  Disturbance in the form of invasion by exotics, logging, improper burning regime, and road and trail construction occur in low to high intensity. Most stands are the result of fire or other natural or unnatural process. Many stands could support conifer woodland or forest with long intervals between fires or other disturbance processes.

Environmental Description:  Stands are found at low to mid elevations (1495-2530 m [4900-8300 feet]) on mid to high portions of slopes with all aspects. The slopes tend to be linear and moderately steep to abrupt (10-70°). This association is found on moderately deep to deep soils and occasionally on shallow soils. Soils are poorly drained to well-drained with textures ranging from stony and gravelly to loam from sedimentary and granitic parent materials. Although fires in this type can be small due to resistance to ignition, they can support catastrophic fires once they get started. The unvegetated surface is made up of litter, wood and bare soil.

Geographic Range: This association is only known from Yosemite National Park in California. Information about its global characteristics is not available without additional inventory. It is likely that this association ranges throughout the Sierra Nevada and perhaps elsewhere in montane California.

Nations: US

States/Provinces:  CA, OR




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G5?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Arctostaphylos patula - Ceanothus velutinus association (Odion et al. 2013)
= Arctostaphylos patula (Sawyer et al. 2009) [37.303.01]
= Arctostaphylos patula Shrubland (Keeler-Wolf et al. 2012)
= Arctostaphylos patula Sierran Chaparral Shrubland (DiPaolo et al. 2018)

Concept Author(s): T. Keeler-Wolf et al. (2012)

Author of Description: T. Keeler-Wolf

Acknowledgements: No Data Available

Version Date: 05-06-10

  • DiPaolo, D. A., D. C. Odion, K. M. Rolih, P. Adamus, and D. A. Sarr. 2018. Vegetation classification and mapping: Crater Lake National Park. Natural Resource Report NPS/CRLA/NRR--2018/1663. National Park Service, Fort Collins, CO. 550 pp.
  • DiPaolo, D. A., S. B. Smith, D. C. Odion, J. H. Ives, and D. A. Sarr. 2015. Vegetation classification and mapping: Lava Beds National Monument. Natural Resource Report NPS/LABE/NRR--2015/1098. National Park Service, Fort Collins, CO. 262 pp.
  • Keeler-Wolf, T., M. Schindel, S. San, P. Moore, and D. Hickson. 2003a. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. Unpublished report by NatureServe in cooperation with the California Native Plant Society and California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, CA.
  • Keeler-Wolf, T., P. E. Moore, E. T. Reyes, J. M. Menke, D. N. Johnson, and D. L. Karavidas. 2012. Yosemite National Park vegetation classification and mapping project report. Natural Resource Technical Report NPS/YOSE/NRTR--2012/598. National Park Service, Fort Collins, CO.
  • Odion, D. C., D. A. DiPaolo, L. C. Groshong, D. A. Sarr, and S. Mohren. 2013. Vegetation Inventory Project: Oregon Caves National Monument and proposed expansion area. Natural Resource Technical Report NPS/ORCA/NRTR--2013/782. National Park Service, Fort Collins, CO. 272 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.