Print Report
CEGL002869 Quercus agrifolia - Umbellularia californica Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: California Live Oak - California Laurel Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is only known from the Santa Monica Mountains region. This woodland association occurs on gentle to steep, often north-facing slopes at elevations between 0 and 851 m. It is dominated by Quercus agrifolia and Umbellularia californica in the tree layer, Heteromeles arbutifolia in the understory shrub layer, and a variety of grasses and forbs in the herbaceous layer.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Several other Quercus agrifolia associations have been identified with a subdominance of Umbellularia californica. These include: Quercus agrifolia - Umbellularia californica / Arctostaphylos glauca - Toxicodendron diversilobum and Quercus agrifolia - Umbellularia californica / Grass (Evens and San 2006), Quercus agrifolia - Umbellularia californica / Ceanothus oliganthus (Keeler-Wolf and Evens 2006), and Quercus agrifolia - Umbellularia californica / Heteromeles arbutifolia - Quercus berberidifolia (Allen et al. 1991). All of these differ in their biogeography and in their environmental factors but are clearly related. All are characteristic of the central and southern coastal portions of California.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Stands of this association at Santa Monica Mountains National Recreation Area form an open to continuous tree layer (7-70%, mean 40.3%) with hardwoods at 2-20 m tall, a sparse to intermittent shrub layer (0-50%, mean 15.7%) at 0-5 m tall, and a sparse to open herbaceous layer (0-15%, mean 1.7%) at 0-2 m tall. Total vegetation cover is 40-78%; mean cover is 57%. In this association, the tree layer is dominated by Quercus agrifolia and Umbellularia californica. Platanus racemosa and Juglans californica are occasionally included in this layer. The shrub layer is sparse to intermittent and is characterized by Heteromeles arbutifolia at low cover. Frequently, Toxicodendron diversilobum and Diplacus aurantiacus (= Mimulus aurantiacus) are also included. The herbaceous layer is diverse and occasionally includes Leymus condensatus, Rubus ursinus, Marah macrocarpus, and Dryopteris arguta.
Dynamics: Until further inventory is completed, there is no global information.
Environmental Description: Until further inventory is completed, there is no global information.
Geographic Range: This association is only known from the Santa Monica Mountains region. Information about its global distribution is not available without additional inventory.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.788737
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.1 Warm Temperate Forest & Woodland Formation | F018 | 1.B.1 |
| Division | 1.B.1.Nc Californian Forest & Woodland Division | D007 | 1.B.1.Nc |
| Macrogroup | 1.B.1.Nc.1 California Live Oak - California Laurel - Western Cypress species Forest & Woodland Macrogroup | M009 | 1.B.1.Nc.1 |
| Group | 1.B.1.Nc.1.a California Live Oak - Valley Oak - California Laurel Forest & Woodland Group | G195 | 1.B.1.Nc.1.a |
| Alliance | A3346 California Live Oak Woodland Alliance | A3346 | 1.B.1.Nc.1.a |
| Association | CEGL002869 California Live Oak - California Laurel Woodland | CEGL002869 | 1.B.1.Nc.1.a |
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: = Quercus agrifolia - Umbellularia californica (Sawyer et al. 2009) [71.060.48]
= Quercus agrifolia-Umbellularia californica Woodland/Forest Association (Keeler-Wolf and Evens 2006)
= Quercus agrifolia-Umbellularia californica Woodland/Forest Association (Keeler-Wolf and Evens 2006)
- Allen, B. H., R. R. Everet, and B. A. Holzman. 1991. A classification system for California''s hardwood rangelands. Hilgardia 59:1-45.
- 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., 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.
- 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.