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Pseudotsuga menziesii / Quercus rugosa Forest | Western Ecology Working Group of...
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Name: Pseudotsuga menziesii / Quercus rugosa Forest Reference: Western Ecology Working Group of... Description: This minor conifer forest association occurs in mid-elevations of mountain ranges of southwestern New Mexico (Animas Mountains) and southeastern Arizona (Santa Catalina, Santa Rita, and Huachuca mountains with outliers in the Mogollon Mountains), and likely occurs in adjacent Texas and northern Mexico. Stands are found in rugged, steep topography and restricted to cool, dry-mesic sites from 1980-2285 m elevation on northerly aspects and from 2285-2440 m on warmer aspects. Soils are shallow and very rocky and are derived from rhyolite and granite parent materials. Rock outcrops are common. At higher elevations the association occurs on steep, mid and upper slopes with convex topography and windy exposures. Stands can also occur as a topo-edaphic climax at lower elevations in ravines and canyons, which have significant cold-air drainage. These sites have deeper soil, but remain cool. The tree canopy is dominated by Pseudotsuga menziesii with Pinus ponderosa or Pinus arizonica often codominant. Pinus strobiformis and Pinus discolor may be present in some stands. The shrub layer is dominated by the broad-leaved evergreen oak Quercus rugosa, often with >60% cover. Quercus hypoleucoides is also commonly present, but with <5% cover. On very rocky sites Quercus chrysolepis can be abundant, with cover up to 20%. The herbaceous layer has low cover and moderate diversity. Perennial grasses may include Koeleria macrantha, Muhlenbergia longiligula, and Poa fendleriana. Forbs typically present include Galium tinctorium, Hedeoma hyssopifolia, Lathyrus graminifolius, Packera neomexicana (= Senecio neomexicanus), Thalictrum fendleri, and Vicia americana. The dominance of Quercus rugosa in the shrub layer distinguishes this association from other Pseudotsuga menziesii-dominated forests.  Accession Code: VB.CC.25944.PSEUDOTSUGAMENZ Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Pseudotsuga menziesii Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Douglas-fir / Netleaf Oak Forest   UID: ELEMENT_GLOBAL.2.688547 NatureServe Explorer   Code: CEGL000454   Scientific: Pseudotsuga menziesii / Quercus rugosa Forest   Common: Douglas-fir / Netleaf Oak (convergence) and Synonyms: (undetermined) Pseudotsuga menziesii / Quercus rugosa Forest