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CEGL005295 Yucca schidigera - Larrea tridentata - Ambrosia dumosa Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Mojave Yucca - Creosotebush - Burrobush Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This yucca shrubland association occurs in northern Arizona, southeastern California and southern Nevada. It is currently described from Grand Canyon National Park and Grand Canyon-Parashant National Monument in Arizona. More survey and classification work are needed to fully characterize this type. It typically occurs on sideslopes, but can occur on ridges, plateaus, and in drainage channels, at 550 to 600 m (1825-1975 feet) elevation, but can be found as high as 650 m (2175 feet). It is typically found on low gradients (2-10°), but occasionally occurs on steeper slopes (up to 20°), and seems to favor south- or east-facing aspects. Soils are well- to rapidly-drained silty or sandy clays or loams. Vegetation is characterized by the dominance of Larrea tridentata in the tall-shrub stratum, Yucca schidigera in the short-shrub stratum, and Ambrosia dumosa in the dwarf-shrub stratum. No other tall shrubs occur regularly. The short-shrub layer usually includes Krameria grayi and occasionally Psorothamnus fremontii. The cactus Opuntia basilaris occurs sporadically in the dwarf shrub-layer. Vulpia octoflora, Bromus rubens, and Schismus barbatus are common in a very sparse graminoid understory. Cryptantha spp., Plantago ovata, Antheropeas lanosum, Phacelia crenulata, and Erodium cicutarium are all frequently present in a well-developed forb layer.
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 shrubland association occurs in northern Arizona, southeastern California and southern Nevada. More survey work is needed to fully document its global range.
Nations: US
States/Provinces: AZ, CA, NV
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.840648
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 | A3147 Mojave Yucca Scrub Alliance | A3147 | 3.B.1.Ne.1.a |
| Association | CEGL005295 Mojave Yucca - Creosotebush - Burrobush Shrubland | CEGL005295 | 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 schidigera - Larrea tridentata - Ambrosia dumosa (Sawyer et al. 2009) [33.070.05]
= Yucca schidigera - Larrea tridentata - Ambrosia dumosa Association (Evens et al. 2012)
= Yucca schidigera - Larrea tridentata - Ambrosia dumosa Shrubland (Reid and Hall 2010)
= Yucca schidigera-Larrea tridentata-Ambrosia dumosa Association (Evens et al. 2014)
< Mojave Yucca Series (Sawyer and Keeler-Wolf 2005)
= Yucca schidigera - Larrea tridentata - Ambrosia dumosa Association (Evens et al. 2012)
= Yucca schidigera - Larrea tridentata - Ambrosia dumosa Shrubland (Reid and Hall 2010)
= Yucca schidigera-Larrea tridentata-Ambrosia dumosa Association (Evens et al. 2014)
< Mojave Yucca Series (Sawyer and Keeler-Wolf 2005)
- 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.
- Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
- 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.
- Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
- 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. 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.