Print Report
CEGL005080 Ambrosia eriocentra - (Coleogyne ramosissima) Dwarf-shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Woolly-fruit Bur-ragweed - (Blackbrush) Dwarf-shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This shrubland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs on sideslopes from 1400 to 1500 m (4575-5000 feet) elevation, but has been found as high as 1600 m (5250 feet). It is typically found on east- to south-facing, moderately sloping gradients (10-20°), but also occasionally occurs on steeper slopes (30°). Soils are rapidly-drained sandy loams that lie on top of limestone. Ambrosia eriocentra dominates the short-shrub layer and characterizes this association. Purshia stansburiana, Coleogyne ramosissima, and Yucca baccata occur in the short-shrub stratum of almost all stands as well, while Encelia resinifera and Ephedra viridis occur occasionally. The fairly sparse dwarf-shrub layer typically includes Agave utahensis and Gutierrezia microcephala, and sometimes also includes Opuntia basilaris and Echinocereus triglochidiatus. The graminoid understory is relatively well-developed and frequently supports Tridens muticus and the exotic Bromus tectorum. Erodium cicutarium (exotic), Sphaeralcea ambigua, Chaetopappa ericoides, Castilleja angustifolia var. dubia, and Mirabilis multiflora are the most common forbs.
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 is currently known from Grand Canyon National Park in northern Arizona. More survey work is needed to fully document its global range.
Nations: US
States/Provinces: AZ
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.840544
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 | A3144 Blackbrush Mojave Desert Scrub Alliance | A3144 | 3.B.1.Ne.1.a |
| Association | CEGL005080 Woolly-fruit Bur-ragweed - (Blackbrush) Dwarf-shrubland | CEGL005080 | 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: = Ambrosia eriocentra - (Coleogyne ramosissima) Dwarf-shrubland (Reid and Hall 2010)
- 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.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.