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CEGL005343 Prosopis velutina / Eragrostis lehmanniana Ruderal Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Velvet Mesquite / Lehmann''s Lovegrass Ruderal Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This shrubland is described from the foothills of Buenos Aires National Wildlife Refuge in southern Arizona. Plot data indicate elevations of 970-1140 m (3180-3730 feet) where it is found on valley floors, swales, ridges, alluvial fans and foothills. Stands occur on gentle to moderate toeslopes and midslopes on all aspects. Substrates are typically well-drained sandy loam. The vegetation is characterized by a moderately dense (over 25% cover) tall-shrub canopy that is dominated by Prosopis velutina (15% or more cover). A moderately dense, mixed short-shrub layer may be present. Associated tall and short shrubs may include Acacia greggii, Celtis laevigata var. reticulata, Gutierrezia sarothrae, Isocoma tenuisecta, Lycium spp., and Cylindropuntia versicolor. The moderately dense to dense (40-90% cover) herbaceous layer is dominated by Eragrostis lehmanniana with over 25% cover or over a third of the total perennial graminoid cover. In some stands, the herbaceous layer is strongly dominated by Eragrostis lehmanniana with little else, while other stands have good species diversity but with typically relatively low cover. Common species include Abutilon incanum, Aristida ternipes, Bouteloua chondrosioides, Bouteloua curtipendula, Bouteloua repens, Bouteloua rothrockii, Croton pottsii, Digitaria californica, Gutierrezia microcephala, Kallstroemia grandiflora, Muhlenbergia porteri, Portulaca oleracea, and Phemeranthus aurantiacus.
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: The vegetation is characterized by a moderately dense (over 25% cover) tall-shrub canopy that is dominated by Prosopis velutina (15% or more cover). A moderately dense, mixed short-shrub layer may be present. Associated tall and short shrubs may include Acacia greggii, Celtis laevigata var. reticulata, Gutierrezia sarothrae, Isocoma tenuisecta, Lycium spp., and Cylindropuntia versicolor (= Opuntia versicolor). The moderately dense to dense (40-90% cover) herbaceous layer is dominated by Eragrostis lehmanniana with over 25% cover or over a third of the total perennial graminoid cover. In some stands, the herbaceous layer is strongly dominated by Eragrostis lehmanniana with little else, while other stands have good species diversity but with typically relatively low cover. Common species include Abutilon incanum, Aristida ternipes, Bouteloua chondrosioides, Bouteloua curtipendula, Bouteloua repens, Bouteloua rothrockii, Croton pottsii, Digitaria californica, Gutierrezia microcephala, Kallstroemia grandiflora, Muhlenbergia porteri, Portulaca oleracea (= Portulaca retusa), and Phemeranthus aurantiacus (= Talinum aurantiacum).
Dynamics: No Data Available
Environmental Description: This shrubland is described from the foothills of Buenos Aires National Wildlife Refuge in southern Arizona. Plot data indicate elevations of 970-1140 m (3180-3730 feet) where it is found on valley floors, swales, ridges, alluvial fans and foothills. Stands occur on gentle to moderate toeslopes and midslopes on all aspects. Substrates are typically well-drained sandy loam.
Geographic Range: This shrubland is found on foothills in Buenos Aires National Wildlife Refuge in southern Arizona and likely occurs in Sonora, Mexico.
Nations: MX?,US
States/Provinces: AZ, MXSON?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.806399
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: GNA
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.90 Honey Mesquite / Red Brome - Lehmann''s Lovegrass Desert Ruderal Scrub & Grassland Macrogroup | M512 | 3.A.2.Na.90 |
| Group | 3.A.2.Na.90.b Honey Mesquite - Velvet Mesquite Warm Desert Ruderal Scrub Group | G819 | 3.A.2.Na.90.b |
| Alliance | A3163 Velvet Mesquite Ruderal Desert Scrub Alliance | A3163 | 3.A.2.Na.90.b |
| Association | CEGL005343 Velvet Mesquite / Lehmann''s Lovegrass Ruderal Shrubland | CEGL005343 | 3.A.2.Na.90.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Prosopis velutina / Eragrostis lehmanniana Semi-natural Shrubland (Schulz 2004)
- Schulz, K. A. 2004. Vegetation classification of Buenos Aires National Wildlife Refuge, Arizona. Unpublished report submitted to USDI Fish and Wildlife Service. NatureServe, Western Regional Office, Boulder, CO.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.