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Prunus virginiana Shrubland Alliance | Western Ecology Working Group of...
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Name: Prunus virginiana Shrubland Alliance Reference: Western Ecology Working Group of... Description: This alliance occurs in scattered locations at low to mid elevations of the western U.S. Sites typically occur along streams, rivers, lakes and ponds, and on terraces. It also is found in canyons or steep gullies and along arroyos. Elevations range from 716 m to about 1600 m in Montana, Wyoming and Colorado, and up to 2440 m in Nevada. In some places the alliance occurs on side slopes of hillsides, immediately below a seep or spring. Some examples of this alliance have been placed into an intermittently or temporarily flooded hydrologic regime. Soils are usually well-developed, older, and well-drained, formed in shallow to deep alluvial deposits. These soils have higher fertility and afford good rooting depth. Textures range from silt to sandy loams, often becoming skeletal at depth. Prunus virginiana can tolerate weakly saline soils, but is intolerant of poor drainage and prolonged flooding. This alliance is characterized by a tall, dense layer of shrubs, primarily of Prunus virginiana. In the absence of disturbance, this species can form dense, monotypic thickets. With grazing or browsing disturbance, stands become more open allowing other shrubs to become common, including Symphoricarpos occidentalis, Rosa woodsii, Ribes aureum, and, in Oregon, Sambucus caerulea. The woody vine Toxicodendron rydbergii is present in most stands, as are the forbs Maianthemum stellatum and Galium triflorum. The herbaceous layer is typically not abundant, although stands with an open shrub canopy will typically have a component of weedy forbs and graminoids. A few scattered Juniperus scopulorum also occur.  Accession Code: VB.CC.25337.PRUNUSVIRGINIAN Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Translated: Choke Cherry Shrubland Alliance   Scientific: Prunus virginiana Shrubland Alliance   UID: HIGHER_CLASS_UNIT.2.124908 NatureServe Explorer   Code: A.919