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CEGL005374 Pinus ponderosa / Robinia neomexicana Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Ponderosa Pine / New Mexico Locust Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is only known to occur at Bandelier National Monument in north-central New Mexico. The current description is based on data received from there and will be updated when additional inventory data are available. This mid-elevation association occurs on sites with moderate to high solar exposure that increases with elevation. Sites vary from gentle on rolling mesatops (5-20% slope) to moderate slopes on the shoulders and upper slopes of canyons (up to 30% slope). Soils are primarily mapped as well-developed, finer-textured Alfisols or Mollisols derived from rhyolitic colluvium and slope alluvium, and occasionally as rocky Inceptisols or rock outcrop. The ground surface is characterized by scattered bunchgrasses and sedges intermixed with litter and bare soil. Most stands occur on sites that have been burned by wildfire within the last 30 years. Elevation ranges from 2050 to 2630 m (6700-8625 feet).

This is a tall coniferous woodland that ranges from open woodland to closed-canopied forest with canopy coverage ranging from 20 to >60%. Pinus ponderosa is dominant in the overstory, and seedlings and saplings may be present in the understory. Other conifers such as Pseudotsuga menziesii, Pinus flexilis, and Juniperus monosperma are rare or incidental. A well-developed shrub layer is diagnostic, with Robinia neomexicana dominant and well-represented with cover as high as 40%. Quercus gambelii may be present but cover is less than 5%. Other common shrubs that may be present include Ceanothus fendleri and Rosa woodsii. The herbaceous layer is also well-developed and diverse. Dominant graminoids include Elymus elymoides, Koeleria macrantha, Muhlenbergia montana, and Poa fendleriana. Numerous Carex species may also be present. Sites that were artificially seeded after fire may be dominated (up to 90% cover) by introduced species such as Bromus inermis, Elymus trachycaulus ssp. trachycaulus, Festuca idahoensis, and Pascopyrum smithii. While forbs are diverse, composition is variable and usually less than 5% total cover.

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 association is only known to occur at Bandelier National Monument in north-central New Mexico.

Nations: US

States/Provinces:  AZ, NM




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: < Pinus ponderosa / Quercus gambelii Cover Type (Balice et al. 1997)
= Pinus ponderosa / Robinia neomexicana Woodland (Muldavin et al. 2011b)

Concept Author(s): E. Muldavin et al. (2011b)

Author of Description: K.S. King after A. Browder and E. Muldavin

Acknowledgements: No Data Available

Version Date: 03-30-09

  • Balice, R. G., S. G. Ferran, and T. S. Foxx. 1997. Preliminary vegetation and land cover classification for the Los Alamos region. Report LA-UR-97-4627, Los Alamos National Laboratory, Los Alamos, NM.
  • Hibner, C. D. 2009. Special project soil survey of Bandelier National Monument. Natural Resources Conservation Science. In cooperation with the USDI National Park Service and the New Mexico Agricultural Experiment Station. [in review]
  • 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.
  • Muldavin, E., A. Kennedy, C. Jackson, P. Neville, T. Neville, K. Schulz, and M. Reid. 2011b. Vegetation classification and map: Bandelier National Monument. Natural Resource Technical Report NPS/SCPN/NRTR--2011/438. National Park Service, Fort Collins, CO.
  • 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.