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Tsuga mertensiana - Pinus contorta var. murrayana Forest | NatureServe Biotics 2019
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Name: Tsuga mertensiana - Pinus contorta var. murrayana Forest Reference: NatureServe Biotics 2019 Description: This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. Stands are found at high elevations (2650-3020 m [8700-9900 feet]) on the upper portions of gentle to steep slopes (4-45°). Aspect varies but tends to be northerly. Slopes are often concave in shape. These sites are typically found on poorly developed to moderately well-developed soils with textures ranging from rocky gravel to loams. Soils are usually well-drained with depths that are shallow to deep. Parent material is granitic. Fire is uncommon and often restricted in size. This association and many of the high-elevation conifer association are extremely limited in extent on the east side due to harsh environmental conditions including relatively low precipitation and cold. Stands form sparse to moderately dense forests dominated by <i>Tsuga mertensiana</i> and <i>Pinus contorta</i>, although <i>Pinus contorta</i> is less abundant. Other tree species that may be found contributing to minor cover in this association include <i>Abies magnifica, Pinus monticola, Pinus jeffreyi</i>, and <i>Pinus lambertiana</i>. The understory layer is often open and my include <i>Juncus</i> sp., <i>Lupinus</i> sp., <i>Lonicera conjugialis, Carex</i> sp., <i>Chrysolepis sempervirens, Spiraea splendens</i>, and <i>Antennaria media</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:36727-{13CA61CA-436E-4F05-B720-AC624F74C39C} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 06-May-2010 to: ongoing
	status: accepted Community's Parent: Tsuga mertensiana - Pinus contorta var. murrayana Sierran Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.687441 NatureServe Explorer   Code: CEGL008688   Translated: Mountain Hemlock - Sierra Lodgepole Pine Forest   Scientific: Tsuga mertensiana - Pinus contorta var. murrayana Forest (convergence) and Synonyms: (similar) Tsuga mertensiana - Pinus contorta var. murrayana Forest (similar) Tsuga mertensiana - Pinus contorta var. murrayana Forest