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CEGL002863 Quercus agrifolia / Heteromeles arbutifolia Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: California Live Oak / Toyon Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association occurs on somewhat steep to steep slopes with variable or north-facing aspects at elevations between 87 and 658 m. It is dominated by Quercus agrifolia 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: Allen et al. (1991) have identified two associations of coast live oak with toyon: One with the shrub Toxicodendron diversilobum, and one with grass species in the understory. It is likely that the currently defined association herein is most similar to the one with Toxicodendron diversilobum. Although only 50% of the samples had Toxicodendron diversilobum, the other environmental characteristics suggest a congruence of this and these two type. Since both accounts do not completely detail the herbaceous component of stands, it remains for a more detailed study to reveal whether these two associations can be reduced to synonymy.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Vegetation is dominated by Quercus agrifolia in the tree layer, Heteromeles arbutifolia in the understory shrub layer, and a variety of grasses and forbs in the herbaceous layer. Average cover reported by Allen et al. (1991) for the similar Quercus agrifolia / Heteromeles arbutifolia - Toxicodendron diversilobum association is 89% tree cover and about 10% Heteromeles arbutifolia and Toxicodendron diversilobum cover. A number of woody and herbaceous species occur at less than 15% constancy.
Dynamics: No Data Available
Environmental Description: This association typically occurs on moderate to steep north- to northeast-facing slopes. The soils are mostly loams over hard sedimentary rocks such as sandstone and shale.
Geographic Range: Similar associations are know from much of central and southern coastal California, as far north as Napa and as far south as Los Angeles counties.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.788704
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G5
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 | CEGL002863 California Live Oak / Toyon Woodland | CEGL002863 | 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 / Heteromeles arbutifolia - Toxicodendron diversilobum Association (Allen et al. 1991)
= Quercus agrifolia / Heteromeles arbutifolia (Sawyer et al. 2009) [71.060.14]
= Quercus agrifolia/Heteromeles arbutifolia Woodland/Forest Association (Keeler-Wolf and Evens 2006)
= Quercus agrifolia / Heteromeles arbutifolia (Sawyer et al. 2009) [71.060.14]
= Quercus agrifolia/Heteromeles arbutifolia 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.
- 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.
- Sawyer, J. O., and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento. 471 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.