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CEGL005755 Larrea tridentata - Ambrosia dumosa - (Ephedra nevadensis, Lycium andersonii) Desert Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Creosotebush - Burrobush - (Nevada Joint-fir, Water Jacket) Desert Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This scrub association is found at low to upper elevations in the Mojave Desert and southern Great Basin in Arizona, California and southern Nevada. Vegetation is characterized by an open to moderate shrub canopy (6-35% cover) dominated by Ambrosia dumosa and Larrea tridentata with Lycium andersonii present. Occasional emergent Yucca brevifolia trees are sometimes present. If present, the herbaceous layer is variable, ranging from sparse to moderately dense, and composed of Xylorhiza tortifolia and exotic annuals Bromus rubens and Erodium cicutarium. Stands occur all slope positions ranging from 500-1500 m elevation. Sites are flat to steep slopes on all aspects. Soils are variable and are derived from a variety of substrates.
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: Vegetation is characterized by an open to moderate shrub canopy (6-35% cover) dominated by Ambrosia dumosa and Larrea tridentata with Lycium andersonii present (Evens et al. 2014). Occasional emergent Yucca brevifolia trees are sometimes present. If present, the herbaceous layer is variable, ranging from sparse to moderately dense (to 35% cover), and composed of Xylorhiza tortifolia and exotic annuals Bromus madritensis and Erodium cicutarium (Evens et al. 2014).
Dynamics: No Data Available
Environmental Description: This scrub association is found at low to upper elevations in the Mojave Desert and southern Great Basin in Arizona, California and southern Nevada. It is found at all slope positions ranging from 500-1500 m elevation (Evens et al. 2014). Sites occur on flat to steep slopes (to 40°) on all aspects (Evens et al. 2014). Soils are variable and are derived from a variety of substrates such as alkali-granite (alaskite), alluvium, basalt, conglomerate, dacite, granodiorite, limestone, rhyolite, sandstone, schist, and tephrite (basanite) (Evens et al. 2014).
Geographic Range: The association is found in the Mojave Desert and southern Great Basin. It was sampled in Lake Mead National Recreation Area in Arizona and Nevada, and Death Valley National Park and Mojave National Preserve in California.
Nations: US
States/Provinces: AZ, CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971695
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.A Warm Desert & Semi-Desert Woodland, Scrub & Grassland Subclass | S06 | 3.A |
| Formation | 3.A.2 Warm Desert & Semi-Desert Scrub & Grassland Formation | F015 | 3.A.2 |
| Division | 3.A.2.Na North American Warm Desert Scrub & Grassland Division | D039 | 3.A.2.Na |
| Macrogroup | 3.A.2.Na.4 Saguaro - Organ Pipe Cactus - Burrobush Mojave-Sonoran Semi-Desert Scrub Macrogroup | M088 | 3.A.2.Na.4 |
| Group | 3.A.2.Na.4.b Creosotebush - Burrobush - Brittlebush Desert Scrub Group | G295 | 3.A.2.Na.4.b |
| Alliance | A3277 Creosotebush - Burrobush Bajada & Valley Desert Scrub Alliance | A3277 | 3.A.2.Na.4.b |
| Association | CEGL005755 Creosotebush - Burrobush - (Nevada Joint-fir, Water Jacket) Desert Shrubland | CEGL005755 | 3.A.2.Na.4.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: > Larrea tridentata - Ambrosia dumosa - Ephedra nevadensis (Sawyer et al. 2009) [33.140.20]
> Larrea tridentata - Ambrosia dumosa - Lycium andersonii (Sawyer et al. 2009) [33.140.19]
= Larrea tridentata-Ambrosia dumosa-(Ephedra nevadensis-Lycium andersonii) (Keeler-Wolf and Thomas 2000)
= Larrea tridentata-Ambrosia dumosa-(Ephedra nevadensis-Lycium andersonii) Association (Evens et al. 2014)
< Larrea tridentata-Ambrosia dumosa Shrubland Alliance (Keeler-Wolf and Thomas 2000)
> Larrea tridentata - Ambrosia dumosa - Lycium andersonii (Sawyer et al. 2009) [33.140.19]
= Larrea tridentata-Ambrosia dumosa-(Ephedra nevadensis-Lycium andersonii) (Keeler-Wolf and Thomas 2000)
= Larrea tridentata-Ambrosia dumosa-(Ephedra nevadensis-Lycium andersonii) Association (Evens et al. 2014)
< Larrea tridentata-Ambrosia dumosa Shrubland Alliance (Keeler-Wolf and Thomas 2000)
- 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., 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.
- 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.