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Abies lowiana - Pinus ponderosa / Amelanchier alnifolia Forest | NatureServe Biotics 2019
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Name: Abies lowiana - Pinus ponderosa / Amelanchier alnifolia Forest Reference: NatureServe Biotics 2019 Description: The association is found in south-central Oregon and possibly northeastern California, in mountains between 1525 and 1830 m in the Modoc Plateau - East Cascades ecoregion. These are open forests or occasionally woodlands characterized by large, widely spaced <i>Pinus ponderosa</i> trees. They occur on all aspects, slopes between 5-55%, primarily on flats or sideslopes. <i>Pinus ponderosa</i> dominates the open canopy, with between 2-50% cover. <i>Abies lowiana</i> ranges from 0-30% cover, while <i>Calocedrus decurrens</i> accounts for 0-10% of the cover. All three species are always found in the understory. Shrubs include <i>Amelanchier alnifolia, Ceanothus prostratus</i> and <i>Mahonia repens</i> generally present, and with <i>Ceanothus velutinus</i> locally important. <i>Poa wheeleri</i> is the most important understory grass, but <i>Festuca idahoensis</i> and <i>Arnica cordifolia</i> may also be important. This association can be distinguished by the combination of <i>Pinus ponderosa, Abies lowiana</i>, and <i>Calocedrus decurrens</i> in the tree layer, and <i>Amelanchier alnifolia</i> present in the shrub layer. Similar <i>Abies lowiana - Pinus ponderosa</i> associations tend to have more closed canopies, and lack the three characteristic shrubs and <i>Poa nervosa</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:28923-{6CE7C58C-409C-4B8B-9AB6-D05CE8F61D2D} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Abies lowiana - Pinus ponderosa Eastern Sierran Forest & Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684070 NatureServe Explorer   Code: CEGL000014   Translated: Sierra White Fir - Ponderosa Pine / Saskatoon Serviceberry Forest   Scientific: Abies lowiana - Pinus ponderosa / Amelanchier alnifolia Forest (convergence) and Synonyms: (similar) Abies concolor - Pinus ponderosa / Amelanchier alnifolia Forest (similar) CEGL000014 (similar) Abies concolor - Pinus ponderosa / Amelanchier alnifolia Forest