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CEGL002854 Juglans californica / Heteromeles arbutifolia Riparian Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Southern California Walnut / Toyon Riparian 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 somewhat steep to steep slopes with variable aspects (though often northeast-facing) at elevations between 237 and 514 m. It is dominated by Juglans californica in the tree layer and Heteromeles arbutifolia in the understory shrub layer. A variety of grass and forbs occur in the herbaceous layer.
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: Stands of this association at Santa Monica Mountains National Recreation Area form a sparse to intermittent tree layer (6-58%, mean 21.6%) with conifers at 0-15 m tall and hardwoods at 2-15 m tall, a sparse to intermittent shrub layer (0-40%, mean 24.4%) at 0-10 m tall, and a sparse to intermittent herbaceous layer (0-37%, mean 8.2%) at 0-1 m tall. Total vegetation cover is 25-68%; mean cover is 52.5%. In this association, the tree layer is dominated by Juglans californica. Quercus agrifolia is frequently included in this layer. The shrub layer is sparse to intermittent and is dominated by Heteromeles arbutifolia, although Rhus ovata and Malosma laurina are frequently present. Occasionally, Ceanothus spinosus, Quercus berberidifolia, Sambucus nigra ssp. cerulea (= Sambucus mexicana), Salvia mellifera, and Artemisia californica are also included. The herbaceous layer is diverse and includes a variety of grasses and forbs at low cover such as Brassica nigra, Marah macrocarpus, Leymus condensatus, and Marrubium vulgare.
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.2.788581
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.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Nd Western North American Interior Flooded Forest Division | D013 | 1.B.3.Nd |
| Macrogroup | 1.B.3.Nd.2 Interior Warm & Cool Desert Riparian Forest Macrogroup | M036 | 1.B.3.Nd.2 |
| Group | 1.B.3.Nd.2.b Western Interior Riparian Forest & Woodland Group | G797 | 1.B.3.Nd.2.b |
| Alliance | A3750 California Sycamore - California Live Oak - Southern California Walnut Riparian Woodland Alliance | A3750 | 1.B.3.Nd.2.b |
| Association | CEGL002854 Southern California Walnut / Toyon Riparian Woodland | CEGL002854 | 1.B.3.Nd.2.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Juglans californica / Heteromeles arbutifolia (Sawyer et al. 2009) [72.100.06]
= Juglans californica/Heteromeles arbutifolia Woodland/Forest Association (Keeler-Wolf and Evens 2006)
< California Walnut Woodland (#71210) (Holland 1986b)
= Juglans californica/Heteromeles arbutifolia Woodland/Forest Association (Keeler-Wolf and Evens 2006)
< California Walnut Woodland (#71210) (Holland 1986b)
- Holland, R. F. 1986b. Preliminary descriptions of the terrestrial natural communities of California. Unpublished report prepared for the California Department of Fish and Game, Nongame-Heritage Program and Natural Diversity Database, Sacramento. 156 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.