Print Report

CEGL008695 Chrysolepis sempervirens / Sparse Understory Sierran Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Bush Chinquapin / Sparse Understory Sierran 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. This association is found from approximately 1830-2620 m (6000-8600 feet) in elevation. It occurs primarily in low or midslope positions, in boulder fields, near outcrops, and on glaciated surfaces on moderate to somewhat steep slopes with variable aspects. Soil textures are rocky loamy sands through silty loams, are derived from granite, and are moderately well- to well-drained. Litter/duff cover ranges from 20-80%. Sites are upland. This association is characterized by a high shrub cover dominated by Chrysolepis sempervirens. Tree species include Abies magnifica, Abies lowiana, and Calocedrus decurrens, but they are infrequent and have low cover. Shrub cover ranges from 60-90 %, with the dominant, Chrysolepis sempervirens. Other shrub species may include Prunus emarginata, Arctostaphylos patula, and Quercus vacciniifolia; however, none are frequent or have high average cover. Cover of herbaceous species averages 5%. No herb species are consistent, but stands may include Pteridium aquilinum, Apocynum androsaemifolium, and Erigeron breweri.

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 is characterized by a high shrub cover dominated by Chrysolepis sempervirens. Tree species include Abies magnifica, Abies lowiana (= Abies concolor var. lowiana), and Calocedrus decurrens, but they are infrequent and have low cover. Shrub cover ranges from 60-90 %, with the dominant, Chrysolepis sempervirens. Other shrub species may include Prunus emarginata, Arctostaphylos patula, and Quercus vacciniifolia; however, none are frequent or have high average cover. Cover of herbaceous species averages 5%. No herb species are consistent, but stands may include Pteridium aquilinum, Apocynum androsaemifolium, and Erigeron breweri.

Dynamics:  No Data Available

Environmental Description:  This association is found from approximately 1830-2620 m (6000-8600 feet) in elevation. It occurs primarily in low or midslope positions, in boulder fields, near outcrops, and on glaciated surfaces on moderate to somewhat steep slopes with variable aspects. Soil textures are rocky loamy sands through silty loams, are derived from granite, and are moderately well- to well-drained. Litter/duff cover ranges from 20-80%. Sites are upland.

Geographic Range: Although the alliance occurs in the mountains of Oregon and California, this association has only been described from Yosemite National Park. Information about its global characteristics is not available without additional inventory.

Nations: US

States/Provinces:  CA




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Chrysolepis sempervirens (Sawyer et al. 2009) [37.700.01]
= Chrysolepis sempervirens Shrubland (Keeler-Wolf et al. 2012)

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

Author of Description: T. Keeler-Wolf

Acknowledgements: No Data Available

Version Date: 05-06-10

  • 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.
  • 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.