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Abies concolor - Pseudotsuga menziesii / Robinia neomexicana Woodland | NatureServe Biotics 2019
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Name: Abies concolor - Pseudotsuga menziesii / Robinia neomexicana Woodland
Reference: NatureServe Biotics 2019
Description: This high-elevation white fir woodland association is currently described from Grand Canyon National Park in Arizona. More survey and classification work are needed to fully characterize this type. It occurs from 2454 to 2664 m (8051-8740 feet) elevation on sideslopes, often at high levels, or on plateaus. It occurs on fairly steep slopes up to 40° (17° average) and occurs across all aspects. Soils are rapidly drained sandy loams and silt loams. This vegetation type occurs in areas which have recently burned at low to moderate severity. Codominant stands of <i>Pinus ponderosa, Abies concolor</i>, and <i>Populus tremuloides</i> characterize the tree canopy of this dry, mixed-conifer association. <i>Abies concolor</i> is the most frequent component of the subcanopy, and <i>Populus tremuloides</i> regeneration is also common. <i>Pseudotsuga menziesii</i> and <i>Pinus ponderosa</i> also occur occasionally in the subcanopy. The presence of successional or regenerating <i>Robinia neomexicana</i> as either a tall shrub (&gt;2 m) or short shrub (&lt;2 m) characterizes the shrub layer and appears to be more dominant than <i>Populus tremuloides</i> in areas with high volcanic ash or tuff in the substrate. The dwarf-shrub <i>Mahonia repens</i> is frequent at very low cover. <i>Carex siccata</i> is the most abundant graminoid; both <i>Poa fendleriana</i> and <i>Carex rossii</i> are frequent. <i>Pseudostellaria jamesiana, Fragaria virginiana</i>, and <i>Phacelia heterophylla</i> are the most frequent forbs. <i>Pteridium aquilinum</i> is fairly common. 
Accession Code: urn:lsid:vegbank.org:commConcept:29800-{E5D27835-7C96-44BC-B42F-CC02ADB9964E}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 07-Nov-2018 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.684393 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000891
  Translated: White Fir - Douglas-fir / New Mexico Locust Woodland
  Scientific: Abies concolor - Pseudotsuga menziesii / Robinia neomexicana Woodland
(convergence) and Synonyms:
(similar) CEGL000891
(similar) Abies concolor - Pseudotsuga menziesii / Robinia neomexicana Woodland
(similar) Abies concolor / Robinia neomexicana Woodland