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CEGL002870 Quercus agrifolia - Umbellularia californica / Ceanothus oliganthus Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: California Live Oak - California Laurel / Hairy Ceanothus 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 slopes, often with north-facing aspects at elevations between 298 and 801 m. Quercus agrifolia and Umbellularia californica are dominant in the tree layer, Ceanothus oliganthus 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 (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 intermittent tree layer (18-38%, mean 32.4%) with hardwoods at 5-10 m tall, a sparse to intermittent shrub layer (6-45%, mean 26.1%) at 0-10 m tall, and a sparse to open herbaceous layer (0-25%, mean 2.9%) at 0-1 m tall. Total vegetation cover is 40-90%; mean cover is 59.6%. In this association, the tree layer is dominated by Quercus agrifolia and Umbellularia californica. Juglans californica is occasionally included in this layer. The shrub layer is sparse to intermittent and is dominated by Ceanothus oliganthus; Heteromeles arbutifolia is often included. Quercus berberidifolia, Diplacus aurantiacus (= Mimulus aurantiacus), Adenostoma sparsifolium, and Ribes malvaceum are occasionally present at low cover. The herbaceous layer is simple and occasionally includes Dryopteris arguta, Piptatherum miliaceum, Leymus condensatus, Melica imperfecta, and Silene gallica at low cover.
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.2.788740
Confidence Level: Moderate
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 | CEGL002870 California Live Oak - California Laurel / Hairy Ceanothus Woodland | CEGL002870 | 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 / Ceanothus oliganthus (Sawyer et al. 2009) [71.060.49]
= Quercus agrifolia-Umbellularia californica/Ceanothus oliganthus Woodland/Forest Association (Keeler-Wolf and Evens 2006)
= Quercus agrifolia-Umbellularia californica/Ceanothus oliganthus 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. 2004. Vegetation associations of a serpentine area: Coyote Ridge, Santa Clara County, California. Unpublished report. California Native Plant Society, 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.
- 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.