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CEGL005739 Atriplex confertifolia - Ambrosia dumosa Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Shadscale Saltbush - Burrobush Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This scrub association is found at mid to upper elevations across the northern Mojave Desert and southern Great Basin in California and southern Nevada. The vegetation is characterized by an open to patchy shrub canopy (5-48% cover) codominated by Ambrosia dumosa. Other shrubs are often present, including Amphipappus fremontii, Echinocactus polycephalus, Larrea tridentata, and Opuntia basilaris. If present, the herbaceous layer is open and composed of a mixture of grasses and forbs such as Eriogonum inflatum and Xylorhiza tortifolia. Stands are found primarily on rock scree slopes ranging from 850-1550 m elevation. Sites occur on gentle to moderately steep slopes on all aspects. Soils typically range from sandy loam to clay loam or silty clay and are usually derived from sedimentary substrates, especially sandstone, but also alluvium, dolostone (dolomite), 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 an open to patchy shrub canopy (5-48% cover) codominated by Ambrosia dumosa (Evens et al. 2014). Other shrubs are often present, including Amphipappus fremontii, Echinocactus polycephalus, Larrea tridentata, and Opuntia basilaris (Evens et al. 2014). If present, the herbaceous layer is open (to 12% cover) and composed of a mixture of grasses and forbs such as Eriogonum inflatum and Xylorhiza tortifolia (Evens et al. 2014).
Dynamics: No Data Available
Environmental Description: This scrub association is found at mid to upper elevations across the northern Mojave Desert and southern Great Basin in California and southern Nevada. It is found primarily on rock scree slopes ranging from 850-1550 m elevation (Evens et al. 2014). Sites occur on gentle to moderately steep slopes (to 36°) on all aspects (Evens et al. 2014). Soils typically range from sandy loam to clay loam or silty clay and are usually derived from sedimentary substrates, especially sandstone, but also alluvium, dolostone (dolomite), limestone, and rhyolite (Evens et al. 2014).
Geographic Range: This scrub association is found at mid to upper elevations across the northern Mojave Desert and southern Great Basin, including Death Valley National Park in California and Nevada.
Nations: US
States/Provinces: CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971567
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.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.5 Shadscale Saltbush - Fourwing Saltbush - Mat Saltbush Great Basin Scrub Macrogroup | M093 | 3.B.1.Ne.5 |
| Group | 3.B.1.Ne.5.b Shadscale Saltbush - Fourwing Saltbush - Spiny Hopsage Scrub Group | G300 | 3.B.1.Ne.5.b |
| Alliance | A0870 Shadscale Saltbush Scrub Alliance | A0870 | 3.B.1.Ne.5.b |
| Association | CEGL005739 Shadscale Saltbush - Burrobush Shrubland | CEGL005739 | 3.B.1.Ne.5.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Ambrosia dumosa-Atriplex confertifolia Association (Keeler-Wolf and Thomas 2000)
= Atriplex confertifolia - Ambrosia dumosa (Sawyer et al. 2009) [36.320.03]
= Atriplex confertifolia-Ambrosia dumosa Association (Evens et al. 2014)
= Atriplex confertifolia-Ambrosia dumosa Association (Keeler-Wolf and Thomas 2000)
< Atriplex confertifolia Shrubland Alliance (Keeler-Wolf and Thomas 2000)
= Atriplex confertifolia - Ambrosia dumosa (Sawyer et al. 2009) [36.320.03]
= Atriplex confertifolia-Ambrosia dumosa Association (Evens et al. 2014)
= Atriplex confertifolia-Ambrosia dumosa Association (Keeler-Wolf and Thomas 2000)
< Atriplex confertifolia 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.