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CEGL005752 Ephedra nevadensis - Lycium andersonii Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Nevada Joint-fir - Water Jacket Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This scrub association is found at mid to upper elevations in the Mojave Desert and southern Great Basin in California and Nevada. Vegetation is characterized by an open to patchy shrub canopy (3-21% cover) dominated by Lycium andersonii with Ephedra nevadensis typically present to codominant. Other shrubs that are often present include Atriplex confertifolia, Ephedra nevadensis, Krascheninnikovia lanata, and Psorothamnus arborescens. Occasional emergent Yucca brevifolia trees are sometimes present. If present, the herbaceous layer has sparse to moderate cover and is composed of scattered grasses and forbs such as Achnatherum speciosum, Eriogonum inflatum, Sphaeralcea ambigua, Xylorhiza tortifolia, and exotic annual grass Bromus rubens. Stands are found on variable slope positions ranging from 1125-1800 m elevation. Sites occur on gentle to moderately steep slopes on variable aspects. Soils range from sand to clay and are derived from a variety of substrates such as granodiorite, limestone, rhyolite, and sandstone.
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 (3-21% cover) dominated by Lycium andersonii with Ephedra nevadensis typically present to codominant (Evens et al. 2014). Other shrubs that are often present include Atriplex confertifolia, Ephedra nevadensis, Krascheninnikovia lanata, and Psorothamnus arborescens (Evens et al. 2014). Occasional emergent Yucca brevifolia trees are sometimes present. If present, the herbaceous layer has sparse to moderate cover (to 25%) and is composed of scattered grasses and forbs such as Achnatherum speciosum, Eriogonum inflatum, Sphaeralcea ambigua, Xylorhiza tortifolia, and exotic annual grass Bromus rubens (Evens et al. 2014).
Dynamics: No Data Available
Environmental Description: This scrub association is found at mid to upper elevations in the Mojave Desert and southern Great Basin in California and Nevada. It is found on variable slope positions ranging from 1125-1800 m elevation (Evens et al. 2014). Sites occur on gentle to moderately steep slopes (to 29°) on variable aspects (Evens et al. 2014). Soils range from sand to clay and are derived from a variety of substrates such as granodiorite, limestone, rhyolite, and sandstone (Evens et al. 2014).
Geographic Range: This scrub association is found at mid to upper elevations in the Mojave Desert and southern Great Basin in California and Nevada and was sampled in Death Valley National Park.
Nations: US
States/Provinces: CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.971684
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.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 | A4245 Nevada Joint-fir - Water Jacket - Spiny Hopsage Scrub Alliance | A4245 | 3.B.1.Ne.1.a |
| Association | CEGL005752 Nevada Joint-fir - Water Jacket Shrubland | CEGL005752 | 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: = Ephedra nevadensis - Lycium andersonii (Sawyer et al. 2009) [33.280.04]
= Ephedra nevadensis-Lycium andersonii Association (Evens et al. 2014)
= Ephedra nevadensis - lyan-epne-grsp Association (Evens 2000)
< Ephedra nevadensis Shrubland Alliance (Keeler-Wolf and Thomas 2000)
= Ephedra nevadensis-Lycium andersonii Association (Evens et al. 2014)
= Ephedra nevadensis - lyan-epne-grsp Association (Evens 2000)
< Ephedra nevadensis Shrubland Alliance (Keeler-Wolf and Thomas 2000)
- Evens, J. M. 2000. Water course vegetation on granite and calcareous substrates in the eastern Mojave Desert, California. Master''s thesis, Humboldt State University, Arcata, 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., 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.