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CEGL002858 Platanus racemosa - Quercus agrifolia Riparian Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: California Sycamore - California Live Oak Riparian Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This mesic woodland occurs on gentle to steep slopes with variable aspects at low elevations between 166 and 480 m. Stands occur on draws and concave areas of hillslopes that are more mesic than surrounding hillsides. Since stands are not associated with running water or springs, they are not considered riparian. This association is codominated by Platanus racemosa and Quercus agrifolia in the tree layer. Heteromeles arbutifolia is characteristically present at low cover in the understory shrub layer, and a variety of grasses and forbs are found in the herbaceous layer.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association is related to the Quercus agrifolia - Platanus racemosa / Toxicodendron diversilobum Association of western Riverside (Klein and Evens 2006) and San Diego (Evens and San 2006) counties. However, in that association Quercus agrifolia is strongly dominant. This association is differentiated from ~Platanus racemosa / Annual Grass-Herb Riparian Woodland (CEGL002857)$$ by its non-riparian setting and codominance of Quercus agrifolia. The name was changed from "South Coast Woodland" because variation in undergrowth species composition is no different from the northern extent of its range.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: In this association, the tree layer is codominated by Platanus racemosa and Quercus agrifolia. Juglans californica is frequently included in this layer. The shrub layer is sparse to intermittent and often includes Heteromeles arbutifolia, Malosma laurina, and Ceanothus spinosus. Occasionally, Toxicodendron diversilobum, Ceanothus megacarpus, and Baccharis pilularis are also present. The herbaceous layer is sparse and includes the forbs (some invasive exotics) Anthriscus caucalis, Marah fabaceus, Stachys bullata, Marrubium vulgare, Marah macrocarpus, and Stellaria media at low cover, and the graminoid Bromus diandrus.

Dynamics:  No Data Available

Environmental Description:  This association occurs between 134 and 460 m (439-1509 feet) elevation on variable aspects, primarily on concave or flat, bottom to midslopes with less than 35° steepness. Soil texture ranges from sand to silty clay loam on general volcanic extrusives and mixed alluvium.

Geographic Range: This woodland is known from the Central Valley (Keeler-Wolf et al. 1997), central interior Coast Ranges (Pinnacles National Monument), and the Santa Monica Mountains (Keeler-Wolf and Evens 2006) of California.

Nations: US

States/Provinces:  CA




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: This placeholder has been replaced by several new types for SAMO.

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Platanus racemosa - Quercus agrifolia (Sawyer et al. 2009) [61.312.01]
= Platanus racemosa-Quercus agrifolia South Coast Woodland/Forest Association (Keeler-Wolf and Evens 2006)
= Quercus agrifolia - Platanus racemosa / Toxicodendron diversilobum Association (Evens and San 2006)
= Quercus agrifolia - Platanus racemosa / Toxicodendron diversilobum Association (Klein and Evens 2006)

Concept Author(s): Keeler-Wolf and Evens (2006)

Author of Description: T. Keeler-Wolf, J. Evens, G. Kittel

Acknowledgements: No Data Available

Version Date: 09-24-07

  • Evens, J., and S. San. 2006. Vegetation alliances of the San Dieguito River Park region, San Diego County, California. Final report (August 2005) Version 2 (revised May 2006). Prepared by California Native Plant Society in cooperation with the California Natural Heritage Program of the California Department of Fish and Game and San Diego Chapter of the California Native Plant Society. Sacramento, CA. 271 pp.
  • Keeler-Wolf, T., K. Lewis, and C. Roye. 1997. The definition and location of central California sycamore alluvial woodland. Unpublished final report. State of California, The Resources Agency, Department of Fish and Game, Sacramento, CA.
  • Keeler-Wolf, T., and J. Evens. 2006. Vegetation classification of the Santa Monica Mountains National Recreation Area and environs in Ventura and Los Angeles counties, California. A report submitted to National Park Service, Santa Monica Mountains National Recreation Area by California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch and The California Native Plant Society, Vegetation Program, Sacramento, CA.
  • Kittel, G., E. Reyes, J. Evens, J. Buck, and D. Johnson. 2012a. Vegetation classification and mapping project report, Pinnacles National Monument. Natural Resource Report NPS/SFAN/NRR-2012/574. National Park Service, Fort Collins, CO. 428 pp.
  • Klein, A., and J. Evens. 2006. Vegetation alliances of western Riverside County, California. Contract Number: P0185404. Final report prepared for The California Department of Fish and Game, Habitat Conservation Division. California Native Plant Society, Sacramento, CA. 332 pp. [http://www.dfg.ca.gov/biogeodata/vegcamp/pdfs/VegMappingRpt_Western_Riverside.pdf]
  • 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.