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Tsuga mertensiana / Arabis platysperma Forest | NatureServe Biotics 2019
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Name: Tsuga mertensiana / Arabis platysperma Forest Reference: NatureServe Biotics 2019 Description: This association is found throughout the northern regions of the Sierra Nevada, predominantly north of the Kings River, occurring more commonly in the northern portions of this range. Stands are usually less than 10 acres in size. Stands are found at mid to high elevations (2170-2850 m [7120-9360 feet]) on somewhat steep to steep (30-60%) broken and hummocky slopes. Aspects range from northeast to northwest, and snow pack typically lingers into the summer. This association is usually found on the upper portions of slopes just below ridgetops. Soils are moderately deep to deep (56-100+ cm [22-40+ inches]) often greater than 100 cm. Soil texture varies between gravelly sands, gravelly sandy loams, and gravelly loams above sands and sandy loams. Soils are usually excessively drained due to coarse textures. Parent material is granitic or volcanic and rarely metamorphic. Stands form moderately dense forests dominated by <i>Tsuga mertensiana</i>. <i>Pinus albicaulis</i> and <i>Abies magnifica</i> are also significant. <i>Pinus contorta</i> occasionally contributes to minor cover. The shrub layer is essentially non-existent. The understory herb layer is typically sparse and may include low amounts of <i>Arabis platysperma, Hieracium albiflorum, Pedicularis semibarbata, Phacelia hydrophylloides, Poa bolanderi, Poa secunda</i>, and <i>Carex</i> sp.  Accession Code: urn:lsid:vegbank.org:commConcept:36725-{233B0F8E-793D-4A37-BD0A-B063AD51C3F4} 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.2.688619 NatureServe Explorer   Code: CEGL008686   Translated: Mountain Hemlock / Pioneer Rockcress Forest   Scientific: Tsuga mertensiana / Arabis platysperma Forest (convergence) and Synonyms: (similar) Tsuga mertensiana / Arabis platysperma Forest (similar) Tsuga mertensiana / Arabis platysperma Forest