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Alnus incana / Glyceria striata Shrubland | Western Ecology Working Group of...
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Name: Alnus incana / Glyceria striata Shrubland
Reference: Western Ecology Working Group of...
Description: This shrubland association is a widespread community but of limited extent in the Pacific Northwest. Stands occur in narrow to moderately wide floodplains on streambanks and around springs. Sites are usually very low-gradient and can be characterized as "stagnant"; soils can include silts and mucks. These shrublands are characterized by stands of medium-tall and tall, deciduous shrubs and a herbaceous undergrowth of wetland-indicator grasses and forbs, and little to no overstory tree canopy, although individual Picea engelmannii, Abies grandis, Abies lasiocarpa, or Thuja plicata trees may be present. Total shrub cover usually exceeds 50% and is dominated by Alnus incana ssp. tenuifolia, the diagnostic shrub. Other shrubs include Cornus sericea, Symphoricarpos albus, and Ribes spp. The understory of undisturbed stands has an herbaceous layer with abundant cover of Glyceria striata (= Glyceria elata) and/or Cinna latifolia. These grasses are often accompanied by Calamagrostis canadensis or Elymus glaucus. Common forbs and other plants include Geum macrophyllum, Galium triflorum, and Equisetum spp. Heavily disturbed stands have abundant non-native grasses. 
Accession Code: VB.CC.18184.ALNUSINCANAGLYC
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 17-Oct-2002 to: 17-Nov-2014
      Names:   Translated: Speckled Alder / Fowl Mannagrass Shrubland
  UID: ELEMENT_GLOBAL.2.683171 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL000228
  Scientific: Alnus incana / Glyceria striata Shrubland
(convergence) and Synonyms:
(undetermined) Alnus incana / Glyceria striata Shrubland