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Pseudotsuga menziesii / Quercus hypoleucoides - Quercus rugosa Forest & Woodland Alliance | NatureServe Biotics 2019
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Name: Pseudotsuga menziesii / Quercus hypoleucoides - Quercus rugosa Forest & Woodland Alliance
Reference: NatureServe Biotics 2019
Description: This high-elevation, diverse Madrean forest and woodland alliance is restricted to the isolated "sky island" mountain ranges of southwestern New Mexico, southern Arizona, and northern Mexico. The diagnostic species for this Madrean forest alliance are upper montane conifer species such as <i>Pseudotsuga menziesii</i> (typical dominant) and <i>Abies coahuilensis</i> (in Mexico) or <i>Abies concolor</i>, which may be present to dominant. <i>Pinus arizonica, Pinus ponderosa</i>, or <i>Pinus strobiformis</i> are often present to codominant as major seral species in the subcanopy. <i>Juniperus deppeana</i> is common as a subcanopy tree or shrub. The subcanopy and understory are characterized by Madrean oak species <i>Quercus arizonica, Quercus chrysolepis, Quercus hypoleucoides</i>, or <i>Quercus rugosa</i>, ranging from present to abundant with <i>Quercus gambelii</i> and <i>Quercus emoryi</i> absent or with low cover. Other shrubs include <i>Ceanothus fendleri, Cercocarpus montanus</i>, and <i>Garrya wrightii</i>. The herbaceous layer ranges from low to moderate cover with moderate diversity. The robust grass <i>Muhlenbergia longiligula</i> typically dominates the ground cover. Forb cover is typically sparse. Stands typically occur at elevations ranging from 1770 -2680 m (5800-8000 feet), with lower elevation stands found on northerly to east-facing, mid to upper slopes and higher elevation stands found on warmer southerly aspects. Soils tend to be shallow, rocky and skeletal and are derived from rhyolite and granite parent materials. 
Accession Code: urn:lsid:vegbank.org:commConcept:38403-{4CEDE594-F528-4655-8C02-A013F07BD1F3}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 08-Jan-2014 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.899238 NatureServe ExplorerNatureServe Explorer logo
  Code: A3108
  Translated: Douglas-fir / Silverleaf Oak - Netleaf Oak Forest & Woodland Alliance
  Common: Madrean Douglas-fir / Oak Forest & Woodland
  Scientific: Pseudotsuga menziesii / Quercus hypoleucoides - Quercus rugosa Forest & Woodland Alliance