Print Report
CEGL001732 Ephedra trifurca / Bouteloua eriopoda Shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Longleaf Joint-fir / Black Grama Shrub Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This Chihuahuan Desert association occurs on the gentle slopes of alluvial fans on moderate or cold aspects between elevations of 1370 and 1525 m (4500-5000 feet). The landscape is characterized by broad alluvial fans, which are dissected by shallow arroyos. Substrates are alluvial deposits and soils are generally well-developed, stable and surface textures range from sand loam to sandy clay loams. The grass layer is dominated by Bouteloua eriopoda with scattered Ephedra trifurca in the overstory. Occasionally, Bouteloua eriopoda is nearly absent and Aristida purpurea will dominate. This phase is probably disturbance related. The grassland is usually luxuriant in cover and high in diversity. Bouteloua gracilis, Muhlenbergia porteri, Setaria leucopila, Aristida ternipes, and Dasyochloa pulchella are often present. The shrub overstory is well represented and evenly distributed. This layer is moderate in diversity and generally includes Gutierrezia sarothrae, Prosopis glandulosa, Opuntia phaeacantha, Cylindropuntia imbricata, Yucca elata and Artemisia filifolia. Though Ephedra trifurca is usually clearly the dominant, on occasion it is very scattered, especially in areas of transition. The forb layer is very diverse and usually well-represented in cover. Baileya multiradiata, Machaeranthera tanacetifolia, Solanum elaeagnifolium and Lepidium montanum are fairly constant species. The forbs are scattered and grow under or between shrub canopies.
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 grass layer is dominated by Bouteloua eriopoda with scattered Ephedra trifurca in the overstory. Occasionally, Bouteloua eriopoda is nearly absent and Aristida purpurea will dominate. This phase is probably disturbance related. The grassland is usually luxuriant in cover and high in diversity. Bouteloua gracilis, Muhlenbergia porteri, Setaria leucopila, Aristida ternipes, and Dasyochloa pulchella (= Erioneuron pulchellum) are often present. The shrub overstory is well represented and evenly distributed. This layer is moderate in diversity and generally includes Gutierrezia sarothrae, Prosopis glandulosa, Opuntia phaeacantha, Cylindropuntia imbricata (= Opuntia imbricata), Yucca elata and Artemisia filifolia. Though Ephedra trifurca is usually clearly the dominant, on occasion it is very scattered, especially in areas of transition. The forb layer is very diverse and usually well-represented in cover. Baileya multiradiata, Machaeranthera tanacetifolia, Solanum elaeagnifolium and Lepidium montanum are fairly constant species. The forbs are scattered and grow under or between shrub canopies.
Dynamics: No Data Available
Environmental Description: This Chihuahuan Desert association occurs on the gentle slopes of alluvial fans on moderate or cold aspects between elevations of 1370 and 1525 m (4500-5000 feet). The landscape is characterized by broad alluvial fans, which are dissected by shallow arroyos. Substrates are alluvial deposits and soils are generally well-developed, stable and surface textures range from sand loam to sandy clay loams.
Geographic Range: This Chihuahuan Desert association occurs in New Mexico.
Nations: US
States/Provinces: NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686271
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2
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.3 Black Grama - Bullgrass - Tobosa Grass Chihuahuan Semi-Desert Grassland Macrogroup | M087 | 3.A.2.Na.3 |
| Group | 3.A.2.Na.3.a Black Grama - Chino Grama - Bush Muhly Semi-Desert Grassland Group | G490 | 3.A.2.Na.3.a |
| Alliance | A3204 Black Grama - Chino Grama Piedmont Desert Grassland Alliance | A3204 | 3.A.2.Na.3.a |
| Association | CEGL001732 Longleaf Joint-fir / Black Grama Shrub Grassland | CEGL001732 | 3.A.2.Na.3.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Bouteloua eriopoda - Ephedra trifurca PA (Muldavin et al. 1994a)
= Bouteloua eriopoda / Ephedra trifurca PA (Muldavin et al. 1998b)
= Ephedra trifurca / Bouteloua eriopoda PA (Muldavin et al. 1998a)
= Ephedra trifurca / Bouteloua eriopoda PA (Muldavin and Mehlhop 1992)
= Black Grama/Longleaf Jointfir PA (Muldavin et al. 2000b) [(Bouteloua eriopoda/Ephedra trifurca: BOUERI/EPHTRI)]
= Bouteloua eriopoda / Ephedra trifurca PA (Muldavin et al. 1998b)
= Ephedra trifurca / Bouteloua eriopoda PA (Muldavin et al. 1998a)
= Ephedra trifurca / Bouteloua eriopoda PA (Muldavin and Mehlhop 1992)
= Black Grama/Longleaf Jointfir PA (Muldavin et al. 2000b) [(Bouteloua eriopoda/Ephedra trifurca: BOUERI/EPHTRI)]
- Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
- Muldavin, E., G. Harper, P. Neville, and Y. Chauvin. 1998b. The vegetation of White Sands Missile Range, New Mexico. Volume II. Vegetation map. Final report for Cooperative Agreement No. 14-16-00-91-233 White Sands Missile Range, U.S. Fish & Wildlife Service. The Nature Conservancy and the University of New Mexico.
- Muldavin, E., P. Mehlhop, and E. DeBruin. 1994a. A survey of sensitive species and vegetation communities in the Organ Mountains of Fort Bliss. Volume III: Vegetation communities. Report prepared for Fort Bliss, Texas, by New Mexico Natural Heritage Program, Albuquerque.
- Muldavin, E., V. Archer, and P. Neville. 1998a. A vegetation map of the Borderlands Ecosystem Management Area. Final report submitted to USDA Forest Service, Rocky Mountain Experiment Station, Flagstaff, AZ, by the New Mexico Natural Heritage Program, University of New Mexico, Albuquerque, NM. 58 pp.
- Muldavin, E., Y. Chauvin, and G. Harper. 2000b. The vegetation of White Sands Missile Range, New Mexico: Volume I. Handbook of vegetation communities. Final report to Environmental Directorate, White Sands Missile Range. New Mexico Natural Heritage Program, University of New Mexico, Albuquerque. 195 pp. plus appendices
- Muldavin, E., and P. Mehlhop. 1992. A preliminary classification and test vegetation map for White Sands Missile Range and San Andreas National Wildlife Refuge, New Mexico. University of New Mexico, New Mexico Natural Heritage Program.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.