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CEGL002717 Larrea tridentata - Coleogyne ramosissima Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Creosotebush - Blackbrush Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This creosotebush shrubland association is currently described from Grand Canyon National Park in Arizona and is also found in California and Nevada. More survey and classification work are needed to fully characterize this type. At Grand Canyon, it typically occurs on sideslopes, but also occurs on plateaus and valley bottoms, at 1050 to 1200 m (3575-3925 feet) elevation, but can be found as low as 950 m (3175 feet). It is typically found on gentle (3-10°) east-facing slopes, but occasionally occurs on steeper slopes (20°). Soils are well-drained silty or sandy clays or loams that usually lie on top of limestone or lava. Vegetation is characterized by strong components of Larrea tridentata in the tall-shrub stratum and Coleogyne ramosissima in the short-shrub layer. Yucca baccata, Ephedra nevadensis, and Ferocactus cylindraceus also regularly occur in the short-shrub stratum. An extremely sparse dwarf-shrub layer typically exists in which Echinocereus engelmannii and Opuntia polyacantha commonly occur. Dasyochloa pulchella and Bromus rubens (exotic) are common in a very sparse graminoid layer. Plantago patagonica and Thymophylla pentachaeta are occasionally present in a similarly weak 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.2.689125
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G4?
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 | A3278 Creosotebush - Ocotillo Upper Bajada & Rock Outcrop Desert Scrub Alliance | A3278 | 3.A.2.Na.4.b |
| Association | CEGL002717 Creosotebush - Blackbrush Shrubland | CEGL002717 | 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: = Coleogyne ramosissima - Larrea tridentata - Ambrosia dumosa (Sawyer et al. 2009) [33.020.07]
= Coleogyne ramosissima - Larrea tridentata - Ambrosia dumosa Shrubland (Keeler-Wolf and Thomas 2000)
= Coleogyne ramosissima-Larrea tridentata Association (Evens et al. 2014)
= Coleogyne ramosissima - Larrea tridentata - Ambrosia dumosa Shrubland (Keeler-Wolf and Thomas 2000)
= Coleogyne ramosissima-Larrea tridentata Association (Evens et al. 2014)
- 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. 1997. Preliminary table of Mojave Desert ecosystem vegetation types.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.