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CEGL008645 Quercus douglasii / Bromus sp. - Daucus pusillus Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Blue Oak / Brome species - American Wild Carrot Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland 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. Stands of this woodland are found at xeric to dry-mesic environments at low elevations (700-1160 m [2300-3800 feet]) on the mid to high portions of southeast- to northwest-facing slopes that are variable in steepness (gentle to steep). Slopes tend to be linear to undulating. Soils are moderately well-developed with textures ranging from sandy loam to clay loam from metamorphic parent material. The soils at these sites tend to be somewhat poorly drained to well-drained. Fire in this association is common but usually is not extensive. Litter cover ranges from 45-95% but tends to be 80-90%. Invasion from exotics species is common at this association with impact levels of low to high. This association forms an open to intermittent tree layer dominated by Quercus douglasii. The understory is continuous with predominantly Bromus sp. (Bromus hordeaceus, Bromus arenarius, and Bromus diandrus), Daucus pusillus, Avena barbata, Galium parisiense, Lactuca serriola, and a large variety of other herbs and grasses. Often common is Hypochaeris glabra. Trifolium microcephalum and Trifolium wormskioldii are sometimes common. Daucus pusillus, Castilleja densiflora, Silene gallica, Torilis arvensis, Brodiaea elegans, Vulpia myuros, Pinus sabiniana, Clarkia purpurea, Gilia capitata, Trifolium ciliolatum, Erodium cicutarium, Lupinus bicolor, Pellaea mucronata, and Quercus wislizeni are often present contributing to minor cover. Perideridia bacigalupii is a rare species that may be contributing to minor cover in this association.

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 only known from Yosemite National Park. Information about its global characteristics is not available without additional inventory. It is likely that this association is included within the broader description by Allen et al. (1991) called Quercus douglasii/grass. As described by them, the Quercus douglasii/grass association ranges from Shasta County to Tulare County and south in the Coast Ranges to San Luis Obispo County.

Nations: US

States/Provinces:  CA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G4?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Quercus douglasii / Bromus sp. - Daucus pusillus Woodland (Keeler-Wolf 2002)
= Quercus douglasii / Bromus spp. - Daucus pusillus (Sawyer et al. 2009) [71.020.16]
= Quercus douglasii/Bromus spp. - Daucus pusillus Woodland [Provisional] (Keeler-Wolf et al. 2012)
? Quercus douglasii/grass association (Allen et al. 1991)

Concept Author(s): T. Keeler-Wolf (2002)

Author of Description: S. San

Acknowledgements: No Data Available

Version Date: 05-06-10

  • Allen, B. H., R. R. Everet, and B. A. Holzman. 1991. A classification system for California''s hardwood rangelands. Hilgardia 59:1-45.
  • CNDDB [California Natural Diversity Data Base]. No date. Unpublished data files. California Natural Diversity Data Base, California Natural Heritage Division, Sacramento.
  • Keeler-Wolf, T. 2002. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. NatureServe in cooperation with the California Native Plant Society and California Natural Heritage Program, Wildlife and Habitat Data Analysis Branch, California Department of Fish and Game, Sacramento, CA. August 2002.
  • 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.