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Betula occidentalis / Crataegus douglasii Wet Shrubland | NatureServe Biotics 2019
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Name: Betula occidentalis / Crataegus douglasii Wet Shrubland Reference: NatureServe Biotics 2019 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. <i>Betula occidentalis</i> forms a low, patchy canopy along the stream, and occasionally spreads out throughout the floodplain with cover ranging from 30-50%. <i>Crataegus douglasii</i> 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 <i>Salix</i> species (<i>Salix exigua, Salix geyeriana</i>, or <i>Salix lucida ssp. lasiandra), Cornus sericea, Populus tremuloides</i>, or <i>Populus balsamifera ssp. trichocarpa</i>. Low shrubs (<i>Rosa woodsii, Ribes aureum, Toxicodendron radicans</i>), graminoids (<i>Leymus cinereus, Carex</i> spp., <i>Deschampsia cespitosa, Carex amplifolia, Juncus arcticus ssp. littoralis</i>) dominate the understory, along with some non-native grasses and forbs (<i>Bromus tectorum, Poa pratensis, Verbascum thapsus</i> and <i>Solanum dulcamara</i>).  Accession Code: urn:lsid:vegbank.org:commConcept:29990-{D017EB27-6318-4482-84CD-C4DCBB881A7F} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: ongoing
	status: accepted Community's Parent: Betula occidentalis Wet Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.689456 NatureServe Explorer   Code: CEGL001081   Translated: Water Birch / Black Hawthorn Wet Shrubland   Scientific: Betula occidentalis / Crataegus douglasii Wet Shrubland (convergence) and Synonyms: (similar) Betula occidentalis / Crataegus douglasii Shrubland (similar) CEGL001081 (similar) Betula occidentalis / Crataegus douglasii Shrubland