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CEGL005395 Isocoma acradenia Wet Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Alkali Goldenbush Wet Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This goldenbush shrubland association 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 occurs in low-level drainage channels and valley bottoms, and on adjacent benches and terraces, typically in areas which receive additional moisture compared to adjacent habitats. It occurs at 400 to 1100 m (1300-3750 feet) elevation, on gentle slopes (2-5°), across all aspects. Soils are sandy or sometimes silty, often alkaline, and moderately well-drained; cryptogamic soil crust is relatively common. Isocoma acradenia characterizes this association and dominates the short-shrub layer. Tamarix ramosissima and Acacia greggii occasionally occur as associates in the tall-shrub stratum, while various short shrubs, including Encelia farinosa, Bebbia juncea, Baccharis emoryi, Ephedra aspera, Salix exigua, and Trixis californica, may sporadically occur. Dwarf-shrubs are essentially lacking in this community, although Gutierrezia sarothrae occasionally occurs. The graminoid layer is fairly sparse, quite variable, and may include Aristida purpurea, Sporobolus cryptandrus, and Sporobolus flexuosus, as well as the non-natives Bromus rubens and Bromus tectorum. Forbs are similarly sparse and variable; Artemisia ludoviciana, Thymophylla pentachaeta, and Aletes macdougalii are somewhat common.
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: Isocoma acradenia characterizes this association and dominates the short-shrub layer. Tamarix ramosissima and Acacia greggii occasionally occur as associates in the tall-shrub stratum, while various short shrubs, including Encelia farinosa, Bebbia juncea, Baccharis emoryi, Ephedra aspera (= Ephedra fasciculata), Salix exigua, and Trixis californica, may sporadically occur. Dwarf-shrubs are essentially lacking in this community, although Gutierrezia sarothrae occasionally occurs. The graminoid layer is fairly sparse, quite variable, and may include Aristida purpurea, Sporobolus cryptandrus, and Sporobolus flexuosus, as well as the non-natives Bromus rubens and Bromus tectorum. Forbs are similarly sparse and variable; Artemisia ludoviciana, Thymophylla pentachaeta, and Aletes macdougalii are somewhat common.
Dynamics: No Data Available
Environmental Description: This goldenbush shrubland occurs in low-level drainage channels and valley bottoms, and on adjacent benches and terraces, typically in areas which receive additional moisture compared to adjacent habitats. It occurs at 400 to 1100 m (1300-3750 feet) elevation, on gentle slopes (2-5°), across all aspects. Soils are sandy or sometimes silty, often alkaline, and moderately well-drained; cryptogamic soil crust is relatively common.
Geographic Range: This association is currently known from Grand Canyon National Park and Grand Canyon-Parashant National Monument in 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.2.841797
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.5 Salt Marsh Formation | F035 | 2.C.5 |
| Division | 2.C.5.Nd North American Western Interior Brackish Marsh, Playa & Shrubland Division | D036 | 2.C.5.Nd |
| Macrogroup | 2.C.5.Nd.1 Warm & Cool Desert Alkali-Saline Marsh, Playa & Shrubland Macrogroup | M082 | 2.C.5.Nd.1 |
| Group | 2.C.5.Nd.1.b Greasewood - Saltbush species Alkaline-Saline Wet Scrub Group | G537 | 2.C.5.Nd.1.b |
| Alliance | A3880 Mojave Seablite - Red Swampfire - Alkali Goldenbush Alkaline Wet Scrub Alliance | A3880 | 2.C.5.Nd.1.b |
| Association | CEGL005395 Alkali Goldenbush Wet Shrubland | CEGL005395 | 2.C.5.Nd.1.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Isocoma acradenia 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.