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CEGL002725 Yucca brevifolia / Pleuraphis rigida Wooded Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Joshua Tree / Big Galleta Wooded Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: Stands are typically open woodlands, and shrubs are usually present and variable in species and cover. This association is dominated by Yucca brevifolia in the emergent tree layer and in the herbaceous layer by Pleuraphis rigida and the exotic Bromus rubens. The sparse to open shrub layer includes a variety of characteristic species such as Hymenoclea salsola, Cylindropuntia echinocarpa, and Salazaria mexicana. Acamptopappus sphaerocephalus, Ephedra nevadensis, Lycium andersonii, Lycium cooperi, and Yucca schidigera are often found in the shrub layer. The understory herb layer includes Amaranthus sp. and the exotic species Erodium cicutarium. This association is known to occur at mid elevations along alluvial fans and plains and low slopes in California and Nevada, including Joshua Tree National Park in the southern Mojave (Pinto Basin and Mountains subsection) and southern California Mountains and Valleys (Little San Bernardino and Bighorn Basin subsection). Stands at Joshua Tree National Park are found at mid elevations (1000-1400 m [3300-4500 feet]) on linear slopes of arroyos, bottom/plains, toeslopes (alluvial fans or bajadas), and alluvial deposits undergoing dissection. These sites tend to be on mostly north-facing and occasionally west-facing, gentle (1-2°) slopes. Soil textures range from coarse loamy sand to loam derived from granite and sometimes silty alluvium parent material. These sites generally experience high levels of disturbance from exotic species.
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: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This association is known to occur in California and Nevada, including Joshua Tree National Park in the southern Mojave (Pinto Basin and Mountains subsection) and southern California Mountains and Valleys (Little San Bernardino and Bighorn Basin subsection).
Nations: US
States/Provinces: CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683999
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2?
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.1 Yellow Rabbitbrush - Blackbrush / Indian Ricegrass Dry Shrubland & Grassland Macrogroup | M171 | 3.B.1.Ne.1 |
| Group | 3.B.1.Ne.1.a Joshua Tree - Eastern Mojave Buckwheat - Rough Joint-fir Mixed Desert Scrub Group | G296 | 3.B.1.Ne.1.a |
| Alliance | A3148 Joshua Tree Wooded Scrub Alliance | A3148 | 3.B.1.Ne.1.a |
| Association | CEGL002725 Joshua Tree / Big Galleta Wooded Grassland | CEGL002725 | 3.B.1.Ne.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Yucca brevifolia / (Yucca baccata) / Pleuraphis (rigida, jamesii) (Evens et al. 2014)
= Yucca brevifolia / Pleuraphis (rigida, jamesii) Association (Keeler-Wolf and Thomas 2000)
= Yucca brevifolia / Pleuraphis rigida (Sawyer et al. 2009) [33.170.16]
= Yucca brevifolia / Pleuraphis rigida Wooded Herbaceous Vegetation (Keeler-Wolf et al. 2005)
= Yucca brevifolia / Pleuraphis rigida Woodland Association (Evens et al. 2012)
< Joshua Tree Series (Sawyer and Keeler-Wolf 2005)
< Joshua Tree Series (Sawyer and Keeler-Wolf 1995)
= Yucca brevifolia / Pleuraphis (rigida, jamesii) Association (Keeler-Wolf and Thomas 2000)
= Yucca brevifolia / Pleuraphis rigida (Sawyer et al. 2009) [33.170.16]
= Yucca brevifolia / Pleuraphis rigida Wooded Herbaceous Vegetation (Keeler-Wolf et al. 2005)
= Yucca brevifolia / Pleuraphis rigida Woodland Association (Evens et al. 2012)
< Joshua Tree Series (Sawyer and Keeler-Wolf 2005)
< Joshua Tree Series (Sawyer and Keeler-Wolf 1995)
- Evens, J. M., D. Roach-McIntosh, and D. Stout. 2012. Vegetation descriptions for Joshua Tree National Park. Unpublished report submitted to USDI, National Park Service, Mojave Desert Inventory and Monitoring Network. California Native Plant Society, Sacramento, CA.
- Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.
- Keeler-Wolf, T. 1997. Preliminary table of Mojave Desert ecosystem vegetation types.
- Keeler-Wolf, T., S. San, and D. Hickson. 2005. Vegetation classification of Joshua Tree National Park, Riverside and San Bernardino counties, California. Unpublished report to the National Park Service. California Fish and Game and California Native Plant Society, Sacramento, CA.
- Keeler-Wolf, T., and K. Thomas. 2000. Draft descriptions of vegetation alliances for the Mojave Ecosystem Mapping project. California Natural Diversity Database, California Department of Fish and Game, Sacramento.
- La Doux, T., C. Lea, and E. Babich. 2013. A summary of the Joshua Tree National Park Vegetation Mapping Project: NPS Vegetation Inventory Program. Natural Resource Technical Report NPS/JOTR/NRTR--2013/723. National Park Service, Fort Collins, CO. 839 pp.
- 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.
- Sawyer, J. O., and T. Keeler-Wolf. 2005. A manual of California vegetation. II. Draft manuscript. California Native Plant Society, Sacramento, CA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.