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Abies lowiana - Pinus ponderosa / Arctostaphylos patula - Mahonia spp. Forest | NatureServe Biotics 2019
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Name: Abies lowiana - Pinus ponderosa / Arctostaphylos patula - Mahonia spp. Forest
Reference: NatureServe Biotics 2019
Description: This forest association is found on flat to convex slopes and major ridges in Oregon's eastern Cascades and may extend into adjacent California. Elevations range between 1525-1980 m (5000-6500 feet). Occurrences are found on all aspects and a variety of slopes (5-40%). Soils are coarse-textured sandy loam or sandy clay loam. <i>Pinus ponderosa</i> and <i>Abies lowiana</i> dominate the overstory with only occasional <i>Pinus contorta</i>. The shrub layer consists of <i>Arctostaphylos patula, Mahonia</i> spp., and <i>Symphoricarpos mollis</i>. The understory is typified by <i>Elymus elymoides ssp. elymoides</i> and <i>Poa wheeleri</i>, with <i>Fragaria</i> sp. common. Stands become codominated by <i>Abies lowiana</i> when naturally frequent fire cycles are prolonged, and hence this association may be a result of fire suppression in this region. Certainly fire suppression has lead to an increase in area of the type. 
Accession Code: urn:lsid:vegbank.org:commConcept:28926-{9E6F4EF7-2475-4980-968E-321D33348788}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 30-Jan-2007 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.687217 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000017
  Translated: Sierra White Fir - Ponderosa Pine / Greenleaf Manzanita - Barberry species Forest
  Scientific: Abies lowiana - Pinus ponderosa / Arctostaphylos patula - Mahonia spp. Forest
(convergence) and Synonyms:
(similar) Abies concolor - Pinus ponderosa / Arctostaphylos patula - Mahonia spp. Forest
(similar) CEGL000017
(similar) Abies concolor - Pinus ponderosa / Arctostaphylos patula - Mahonia spp. Forest