Print Report
CEGL002880 Brassica nigra - Bromus diandrus Ruderal Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Mustard - Ripgut Brome Ruderal Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is only sampled from the Santa Monica Mountains region. However, it is anecdotally known from much of cismontane California. This herbaceous association occurs on gentle to very steep slopes of variable aspect at low elevations between 37 and 495 m. It is codominated by Bromus diandrus and Brassica nigra in the herbaceous layer. Malosma laurina, Hazardia squarrosa, Artemisia californica, and Salvia leucophylla are sometimes found in the shrub layer at low cover, and Quercus lobata, Quercus agrifolia, Juglans californica, and Pinus spp. are infrequently found in the tree layer at low cover.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Stands of this association are typically the result of high disturbance through grazing, fire, clearing, mechanical treatments, or a combination of the above. All three of the associations with mixtures of Brassica nigra and annual herbs and grasses may be considered closely related. They may ultimately be lumped into a single black mustard-weedy herbaceous association of the California annual grassland alliance. However, since analysis suggests these types do separate out at least floristically, we are maintaining their distinction here until further detailed relevé-based sampling is done to determine their relationships.
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 herbaceous layer (16-65%, mean 42.3%) at 0.01-1 m tall. The shrub layer is sparse to open (0-12%, mean 3%) at 0-5 m tall. Trees are infrequently emergent (0-8% cover, mean 0.5%) with hardwoods at 0-15 m tall. Total vegetation cover is 20-65%; mean cover is 45.7%. In this association, the herbaceous layer is open to intermittent and is codominated by Bromus diandrus and Brassica nigra. Other non-native species such as Centaurea melitensis, Hirschfeldia incana, and Avena fatua are also occasionally included in this layer at relatively low cover. The shrub layer sometimes includes Malosma laurina, Hazardia squarrosa, Artemisia californica, and Salvia leucophylla. The tree layer infrequently includes Quercus lobata, Quercus agrifolia, Juglans californica, and Pinus spp. as emergents.
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 sampled from the Santa Monica Mountains region. However, it is anecdotally known from much of cismontane California.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.788768
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: GNA
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.1 Mediterranean Scrub & Grassland Formation | F038 | 2.B.1 |
| Division | 2.B.1.Na Californian Scrub & Grassland Division | D327 | 2.B.1.Na |
| Macrogroup | 2.B.1.Na.90 Wild Oat - Black Mustard - Ripgut Brome Ruderal Grassland, Meadow & Scrub Macrogroup | M046 | 2.B.1.Na.90 |
| Group | 2.B.1.Na.90.a Wild Oat - Ripgut Brome Ruderal Grassland, Meadow & Scrub Group | G497 | 2.B.1.Na.90.a |
| Alliance | A4214 Black Mustard - Radish species Ruderal Annual Forb Meadow Alliance | A4214 | 2.B.1.Na.90.a |
| Association | CEGL002880 Black Mustard - Ripgut Brome Ruderal Grassland | CEGL002880 | 2.B.1.Na.90.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Brassica nigra - Bromus diandrus (Sawyer et al. 2009) [42.011.02]
= Brassica nigra-Bromus diandrus Herbaceous Association (Keeler-Wolf and Evens 2006)
< Bromus (diandrus, hordeaceus, madritensis) Herbaceous Alliance (Reid et al. 1999)
< California Annual Grassland (Sawyer and Keeler-Wolf 1995)
< Non-native Grassland (#42200) (Holland 1986b)
= Brassica nigra-Bromus diandrus Herbaceous Association (Keeler-Wolf and Evens 2006)
< Bromus (diandrus, hordeaceus, madritensis) Herbaceous Alliance (Reid et al. 1999)
< California Annual Grassland (Sawyer and Keeler-Wolf 1995)
< Non-native Grassland (#42200) (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.
- Keeler-Wolf, T., and M. Vaghti. 2000. Vegetation mapping of Suisun Marsh, Solano County, California. A report to the California Department of Water Resources. California Department of Fish and Game, California Natural Diversity Database, Sacramento, CA.
- Reid, M. S., K. A. Schulz, P. J. Comer, M. H. Schindel, D. R. Culver, D. A. Sarr, and M. C. Damm. 1999. An alliance level classification of vegetation of the coterminous western United States. Unpublished final report to the University of Idaho Cooperative Fish and Wildlife Research Unit and National Gap Analysis Program, in fulfillment of Cooperative Agreement 1434-HQ-97-AG-01779. The Nature Conservancy, Western Conservation Science Department, Boulder, CO.
- 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.