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CEGL002887 Juglans californica / Annual Grass-Herb Riparian Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Southern California Walnut / Annual Grass-Herb 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 at low elevations between 119 and 461 m. It is dominated by Juglans californica in the tree layer and a variety of forbs and grasses in the herbaceous layer.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is likely to be restricted to the Santa Monica Mountains and other parts of the western Los Angeles Basin of California. Higher quality stands have a relatively high native to non-native understory species component.
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 (5-45%, mean 21.5%) with hardwoods at 2-10 m tall, a sparse to open shrub layer (0-15%, mean 5.7%) at 0-10 m tall, and an open to intermittent herbaceous layer (12-45%, mean 30.8%) at 0-1 m tall. Total vegetation cover is 37-65%; mean cover is 54.9%. In this association, the tree layer is dominated by Juglans californica. Quercus agrifolia is occasionally included in this layer. The shrub layer is sparse to open and occasionally includes Artemisia californica, Malosma laurina, and Toxicodendron diversilobum. The herbaceous layer is diverse and includes Brassica nigra, Leymus condensatus, Bromus sp., Bromus diandrus, Marah macrocarpus, Centaurea melitensis, Galium aparine, Marrubium vulgare, and a variety of other native and non-natives species.
Dynamics: No Data Available
Environmental Description: This association has only been described from the Santa Monica Mountains National Recreation Area. 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.2.788573
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 | CEGL002887 Southern California Walnut / Annual Grass-Herb Riparian Woodland | CEGL002887 | 1.B.3.Nd.2.b |
Concept Lineage: This placeholder is replaced by several types described from SAMO (Keeler-Wof and Evens 2005).
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Juglans californica / annual herbaceous (Sawyer et al. 2009) [72.100.03]
= Juglans californica/Annual Grass-Herb Woodland/Forest Association (Keeler-Wolf and Evens 2006)
= Juglans californica/Annual Grass-Herb Woodland/Forest Association (Keeler-Wolf and Evens 2006)
- 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.