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CEGL005337 Panicum antidotale Ruderal Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Giant Panicgrass Ruderal Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This desert grassland association occurs in southeastern Arizona on valley floors at elevations ranging from 970-1005 m (3190-3300 feet). Sites occur on flats or gentle slopes. Substrates are moderately to poorly drained clayey soils. This semi-natural grassland is characterized by dominance or codominance by Panicum antidotale, an introduced, perennial forage grass seeded and now naturalized throughout much of southern Arizona. Natural mixed desert grasslands have high species diversity and range in cover from relatively sparse to dense. This association is also variable in composition and cover and is defined by having 25% or more cover of Panicum antidotale or over a third of the total perennial graminoid cover for stands with a sparser herbaceous layer. Panicum antidotale also strongly dominates stands with few native species remaining. Associated species include Amaranthus palmeri, Eragrostis curvula, Sorghum halepense, and other species that are common on disturbed sites. Scattered shrubs, such as Prosopis velutina or Acacia greggii, may be present with low cover (<10%).
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This grassland replaces native desert grasslands where Panicum antidotale was planted and/or become naturalized.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This semi-natural grassland is characterized by dominance or codominance by Panicum antidotale, an introduced, perennial forage grass seeded and now naturalized throughout much of southern Arizona. Natural mixed desert grasslands have high species diversity and range in cover from relatively sparse to dense. This association is also variable in composition and cover and is defined by having 25% or more cover of Panicum antidotale or over a third of the total perennial graminoid cover for stands with a sparser herbaceous layer. Panicum antidotale also strongly dominates stands with few native species remaining. Associated species include Amaranthus palmeri, Eragrostis curvula, Sorghum halepense, and other species that are common on disturbed sites. Scattered shrubs, such as Prosopis velutina or Acacia greggii, may be present with low cover (<10%).
Dynamics: No Data Available
Environmental Description: This desert grassland association occurs in southeastern Arizona on valley floors at elevations ranging from 970-1005 m (3190-3300 feet). Sites occur on flats or gentle slopes. Substrates are moderately to poorly drained clayey soils.
Geographic Range: This desert grassland occurs in southern Arizona in areas that where formerly mixed desert grasslands.
Nations: US
States/Provinces: AZ
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.806366
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.a Lehmann''s Lovegrass - Red Brome - Asian Mustard Warm Desert Ruderal Grassland Group | G677 | 3.A.2.Na.90.a |
| Alliance | A2687 Lehmann''s Lovegrass - Weeping Lovegrass Ruderal Desert Grassland Alliance | A2687 | 3.A.2.Na.90.a |
| Association | CEGL005337 Giant Panicgrass Ruderal Grassland | CEGL005337 | 3.A.2.Na.90.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Panicum antidotale Ruderal Herbaceous Vegetation (Schulz 2004)
- Gould, F. W. 1988. Grasses of the southwestern United States. University of Arizona Press, Tucson. 343 pp.
- 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.