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Artemisia tridentata ssp. vaseyana / Poa (pratensis, compressa) Ruderal Shrub Grassland | NatureServe Biotics 2019
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Name: Artemisia tridentata ssp. vaseyana / Poa (pratensis, compressa) Ruderal Shrub Grassland Reference: NatureServe Biotics 2019 Description: This shrub herbaceous association is known only from Black Canyon of the Gunnison National Park. Stands occur on toeslopes, plateaus, ridgetops, and in valley bottoms between 2311 and 2456 m elevation. Sites are flat to gently sloping with cooler northern to southeastern aspects. The unvegetated surface has moderate to dense cover of litter and exposure of bare soil. The underlying geology is varied and includes Mesozoic sandstone, metamorphic granitic rocks, and Quaternary alluvium. Soils are moderately well-drained and range from silty clay loams to sandy loams depending on parent materials. The vegetation is characterized by an open to relatively closed short-shrub canopy, from 0.5-2 m tall, of <i>Artemisia tridentata ssp. vaseyana</i> (5-50% cover), with a moderately dense herbaceous layer dominated by exotic grasses <i>Poa pratensis</i> and <i>Poa compressa</i>. The associated shrubs and dwarf-shrubs are diverse and provide low cover, including <i>Amelanchier utahensis, Artemisia tridentata ssp. wyomingensis, Chrysothamnus viscidiflorus, Ericameria parryi, Gutierrezia sarothrae, Mahonia repens, Opuntia fragilis, Peraphyllum ramosissimum, Rosa woodsii, Symphoricarpos oreophilus</i>, and <i>Symphoricarpos rotundifolius</i>. The herbaceous layer has moderate to sometimes low cover and is very diverse. The associated graminoids include <i>Achnatherum lettermanii, Elymus elymoides</i>, and <i>Hesperostipa comata</i>. Forb cover is diverse but sparse.  Accession Code: urn:lsid:vegbank.org:commConcept:31248-{7DF0B027-D7C9-4EB8-A92E-F8ED6AFC1E2A} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 16-May-2006 to: ongoing
	status: accepted Community's Parent: Artemisia spp. - Mixed Shrub Ruderal Understory Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.758445 NatureServe Explorer   Code: CEGL002339   Translated: Mountain Big Sagebrush / (Kentucky Bluegrass, Canada Bluegrass) Ruderal Shrub Grassland   Scientific: Artemisia tridentata ssp. vaseyana / Poa (pratensis, compressa) Ruderal Shrub Grassland (convergence) and Synonyms: (similar) Artemisia tridentata ssp. vaseyana / Poa (pratensis, compressa) Ruderal Shrub Herbaceous Vegetation