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CEGL005765 Larrea tridentata - Atriplex polycarpa Desert Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Creosotebush - Cattle Saltbush Desert Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is found at low to mid elevations in the northern Colorado/Sonoran Desert, Mojave Desert and southern Great Basin in California and southern Nevada. Vegetation is characterized by a sparse to open shrub canopy (2-15% cover) codominated by Atriplex polycarpa and Larrea tridentata. Ambrosia dumosa may be present in some stands. If present, the herbaceous layer is sparse. Stands occur primarily in low areas such as terraces adjacent to washes and drainages on sandy flats, sandsheets, and toeslopes ranging from 0-850 m elevation. Sites occur on flat to moderate slopes on variable aspects. Soils are sands and loams, often alkaline with moderate to high cover of gravel and are derived from a variety of substrates such as alluvium, sand deposits, conglomerate, limestone, and rhyolite.
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 a sparse to open shrub canopy (2-15% cover) codominated by Atriplex polycarpa and Larrea tridentata (Evens et al. 2014). Ambrosia dumosa may be present in some stands (Evens and Hartman 2007, Evens et al. 2014). If present, the herbaceous layer is sparse (to 6% cover).
Dynamics: No Data Available
Environmental Description: This association is found at low to mid elevations in the northern Colorado/Sonoran Desert, Mojave Desert and southern Great Basin in California and southern Nevada. It occurs primarily in low areas such as terraces adjacent to washes and drainages on sandy flats, sandsheets, and toeslopes ranging from 0-850 m elevation (Evens and Hartman 2007, Evens et al. 2014). Sites occur on flat to moderate slopes (to 22°) on variable aspects (Evens et al. 2014). Soils are sands and loams, often alkaline with moderate to high cover of gravel (36-88% cover) and are derived from a variety of substrates such as alluvium, sand deposits, conglomerate, limestone, and rhyolite (Keeler-Wolf et al. 1998a, Evens and Hartman 2007, Evens et al. 2014)
Geographic Range: This association is found in the northern Colorado Desert, Mojave Desert and southern Great Basin. It was sampled in Mojave National Preserve and Death Valley National Park in California and southern Nevada.
Nations: US
States/Provinces: CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971732
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 | CEGL005765 Creosotebush - Cattle Saltbush Desert Shrubland | CEGL005765 | 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 - Atriplex polycarpa (Sawyer et al. 2009) [33.010.12]
= Larrea tridentata - Atriplex polycarpa Shrubland Association (Evens and Hartman 2007)
= Larrea tridentata-Atriplex polycarpa/Lepidium laevipes (Keeler-Wolf and Thomas 2000) [(Root n=5)]
= Larrea tridentata-Atriplex polycarpa (Keeler-Wolf and Thomas 2000) [(n=3) (low and/or alkaline)]
= Larrea tridentata-Atriplex polycarpa Association (Evens et al. 2014)
< Larrea tridentata Alliance (Keeler-Wolf and Thomas 2000)
= Creosote bush-allscale association (Keeler-Wolf et al. 1998a)
= Larrea tridentata - Atriplex polycarpa Shrubland Association (Evens and Hartman 2007)
= Larrea tridentata-Atriplex polycarpa/Lepidium laevipes (Keeler-Wolf and Thomas 2000) [(Root n=5)]
= Larrea tridentata-Atriplex polycarpa (Keeler-Wolf and Thomas 2000) [(n=3) (low and/or alkaline)]
= Larrea tridentata-Atriplex polycarpa Association (Evens et al. 2014)
< Larrea tridentata Alliance (Keeler-Wolf and Thomas 2000)
= Creosote bush-allscale association (Keeler-Wolf et al. 1998a)
- 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.
- Evens, J. M., and S. Hartman. 2007. Vegetation survey and classification for the Northern and Eastern Colorado Desert Coordinated Management Plan (NECO). CNPS Vegetation Program, Sacramento, CA.
- Keeler-Wolf, T., C. Roye, and K. Lewis. 1998a. Vegetation mapping and classification of the Anza-Borrego Desert State Park, California. Unpublished report on file at California Natural Diversity Database, California Department Fish and Game, Sacramento.
- 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.