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Betula occidentalis / Crataegus douglasii Shrubland | Western Ecology Working Group of...
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Name: Betula occidentalis / Crataegus douglasii Shrubland
Reference: Western Ecology Working Group of...
Description: This is a riparian, bottomland community found on perennial third order streams to small rivers in medium to large U-shaped, valley bottoms. Occurrences occur at relatively low elevations in the valleys and mountains of eastern Oregon, eastern Idaho, and western Idaho. Betula occidentalis forms a low, patchy canopy along the stream, and occasionally spreads out throughout the floodplain with cover ranging from 30-50%. Crataegus douglasii is found throughout the bottomland, creating shrub thickets with overall cover ranging from 20-40%. Other trees and tall shrubs are rare, but can include Salix species (Salix exigua, Salix geyeriana, or Salix lucida ssp. lasiandra), Cornus sericea, Populus tremuloides, or Populus balsamifera ssp. trichocarpa (= Populus trichocarpa). Low shrubs (Rosa woodsii, Ribes aureum, Toxicodendron radicans), graminoids (Leymus cinereus (= Elymus cinereus), Carex spp., Deschampsia caespitosa, Carex amplifolia, Juncus balticus) dominate the understory, along with some non-native grasses and forbs (Bromus tectorum, Poa pratensis, Verbascum thapsus and Solanum dulcamara). 
Accession Code: VB.CC.25680.BETULAOCCIDENTA
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Nov-2014
      Names:   Translated: Water Birch / Black Hawthorn Shrubland
  UID: ELEMENT_GLOBAL.2.689456 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL001081
  Scientific: Betula occidentalis / Crataegus douglasii Shrubland
(convergence) and Synonyms:
(undetermined) Betula occidentalis / Crataegus douglasii Shrubland