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Pinus aristata / Festuca arizonica Woodland | NatureServe Biotics 2019
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Name: Pinus aristata / Festuca arizonica Woodland Reference: NatureServe Biotics 2019 Description: This is an association confined to exposed, windswept ridges and steep slopes in the upper montane and subalpine zones of the southern Rocky Mountains. These open to moderately closed woodlands occur on all aspects, but are most common on drier south- and west-facing slopes. Slopes are typically moderate to steep, but may also be gentle. Soils are typically well-drained, shallow, and skeletal. Stands have an open to moderately closed canopy typically 5-15 m tall that is solely dominated or codominated by <i>Pinus aristata</i>. Individual trees may reach 20 m. In some stands trees are clumped with grassy patches interspersed. Other tree species that may be present to codominant vary geographically within its range. <i>Picea engelmannii</i> and <i>Pseudotsuga menziesii</i> are the most common. <i>Pinus flexilis</i> has also been reported as an associate in some stands. <i>Abies lasiocarpa</i> and <i>Populus tremuloides</i> may be scattered in some stands, but are generally restricted to more mesic sites and are typically absent in the drier southern extent of this association. The understory vegetation ranges from moderately dense to sparse (typically) because sites are dry and often have large amounts of rock cover. The sparse to moderately dense herbaceous layer often dominates the understory. The most common species are typically graminoids, especially species of <i>Festuca</i>. This association differs from ~<i>Pinus aristata / Trifolium dasyphyllum</i> Woodland (CEGL000762)$$ by having a higher and more consistent cover of perennial grasses.  Accession Code: urn:lsid:vegbank.org:commConcept:29668-{3391F934-1DFD-4823-9EEB-61C1128AD6F7} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 21-Dec-2018 to: ongoing
	status: accepted Community's Parent: Pinus aristata Woodland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.684122 NatureServe Explorer   Code: CEGL000759   Translated: Bristlecone Pine / Arizona Fescue Woodland   Scientific: Pinus aristata / Festuca arizonica Woodland (convergence) and Synonyms: (similar) CEGL000759 (similar) Pinus aristata / Festuca arizonica Woodland (similar) Pinus aristata / Festuca arizonica Woodland