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Alnus incana / Mesic Forbs Shrubland | Western Ecology Working Group of...
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Name: Alnus incana / Mesic Forbs Shrubland Reference: Western Ecology Working Group of... Description: This shrubland association has a widespread distribution that includes the western states of Montana, Idaho, Utah, Nevada, California, and Colorado. Stands occur on terraces and floodplains adjacent to streams with a bedload of boulders, cobble, or gravel. Channel type is variable ranging from high-gradient reaches that support the association as stringers, to more extensive stands on sites with a developed floodplain. Soils typically have a seasonally high water table with mottling in the top 25 cm of the surface. These riparian shrublands are characterized by stands of medium-tall and tall, deciduous shrubs and a thick herbaceous undergrowth of forbs and wetland-indicator grasses. Alnus incana clearly dominates the tall-shrub overstory with over 25% cover. Conifers, including Abies lasiocarpa, Picea engelmannii and Pinus contorta, are sometimes present. A somewhat sparse low-shrub layer is often present and may include Lonicera involucrata, Cornus sericea, and species of Ribes, Rosa, and Salix. Undisturbed stands have abundant forbs and native grasses. The undergrowth is characterized by a mixed forb cover of Angelica arguta, Heracleum maximum (= Heracleum lanatum), Equisetum arvense, Mertensia spp., Aconitum columbianum, Senecio triangularis, and/or Maianthemum stellatum with over 100% cover in combination. Stands disturbed by season-long livestock grazing have reduced forb cover and increased non-native grasses including Poa pratensis and Agrostis stolonifera. Large stands (>100 m2), with the native herbaceous undergrowth intact are uncommon.  Accession Code: VB.CC.26676.ALNUSINCANAMESI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Alnus incana Temporarily Flooded Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: Speckled Alder / Mesic Forbs Shrubland   UID: ELEMENT_GLOBAL.2.689329 NatureServe Explorer   Scientific: Alnus incana / Mesic Forbs Shrubland   Code: CEGL001147 (convergence) and Synonyms: (undetermined) Alnus incana / Mesic Forbs Shrubland