Print Report
CEGL003374 Brachypodium distachyon Ruderal Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Purple False Brome Ruderal Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is only known from the Golden Gate National Recreation Area and from the Santa Cruz Mountains of California. In both areas the stands are found on xeric exposures in areas that were likely to have supported native grasslands prior to the introduction of non-native grasses and forbs. Information about its global characteristics is not available without additional inventory.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: About 30 stands of Brachypodium distachyon-dominated annual grassland have been sampled in the Santa Cruz Mountains from 20-50 miles south of the Point Reyes/Golden Gate mapping area. These records have been entered in the California Vegetation Information System Database (CNDDB 2001). They contain similar mixes of species to the Point Reyes samples including Nassella pulchra up to 30% cover. It appears that Brachypodium distachyon-dominated annual grassland occurs on soils suited for grass species and may have once been dominated by Nassella pulchra. Most Santa Cruz Mountains stands have Nassella pulchra as the principal native associate, suggesting that Brachypodium distachyon is a relatively close ecological equivalent to Nassella pulchra and may compete for sites with this important native species. Some stands in the Santa Cruz Mountains and locally at Golden Gate National Recreation Area also have evidence of invasion by shrubs such as Baccharis pilularis. Most of the stands with Baccharis are underlain by a relatively coarser soil. It is likely that many of these stands were once stands of Baccharis pilularis, converted by clearing and grazing.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: No Data Available
Dynamics: No Data Available
Environmental Description: This association is only known from the Golden Gate National Recreation Area and the Santa Cruz Mountains. In both areas the stands are found on xeric exposures in areas that were likely to have supported native grasslands prior to the introduction of non-native grasses and forbs. Information about its global characteristics is not available without additional inventory.
Geographic Range: This association is only known from the Golden Gate National Recreation Area and from the Santa Cruz Mountains several miles south of the study area (see comments). Information about its global characteristics is not available without additional inventory.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686598
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 | A3870 Wild Oat - Brome species Ruderal Annual Grassland Alliance | A3870 | 2.B.1.Na.90.a |
| Association | CEGL003374 Purple False Brome Ruderal Grassland | CEGL003374 | 2.B.1.Na.90.a |
Concept Lineage: Upgraded to Standard during screening.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Brachypodium distachyon (Sawyer et al. 2009) [42.040.03]
= Brachypodium distachyon Association (Schirokauer et al. 2003) [pi code 67011]
= Brachypodium distachyon Association (Rodriguez et al. 2017)
= Brachypodium distachyon Association (Schirokauer et al. 2003) [pi code 67011]
= Brachypodium distachyon Association (Rodriguez et al. 2017)
- CNDDB [California Natural Diversity Data Base]. No date. Unpublished data files. California Natural Diversity Data Base, California Natural Heritage Division, Sacramento.
- Rodriguez, D., K. G. Sikes, T. Keeler-Wolf, G. Kittel, J. Curtis, C. Curley, and J. Evens. 2017. Vegetation classification of Channel Islands National Park. Report to the National Park Service, Fort Collins, 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.
- Schirokauer, D., T. Keeler-Wolf, J. Meinke, and P. van der Leeden. 2003. Plant community classification and mapping project. Point Reyes National Seashore, Golden Gate National Recreation Area, San Francisco Water Department Watershed Lands, Mount Tamalpais, Tomales Bay, and Samuel P. Taylor State Parks. Final report. California State Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, National Park Service, Point Reyes Station, and Aerial Information Systems, Redlands, CA. 82 pp. [http://biology.usgs.gov/npsveg/pore_goga/index.html]
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.