Name:
Artemisia tridentata ssp. wyomingensis - Peraphyllum ramosissimum / Festuca idahoensis Shrubland
Reference:
NatureServe Biotics 2019
Description:
This type occurs over a wide geographic area in eastern Oregon, but in an extremely narrow band. Most occurrences are small, found in an extensive sea of big sagebrush steppe. It occurs in a narrow band along the southern edge of the Blue and Wallowa Mountains, with most occurrences at the northern end of the Owyhee Uplands and northern Basin and Range sections of the Columbia Plateau ecoregion. All occurrences of this association are on deep, well-drained, silty soils. Bare soil is found only in grazed sites. Ungrazed areas have 10-20% cover of mosses and lichens. Elevation ranges from 915 to 1525 m (3000-5000 feet), with the association found on north-facing slopes at the lower elevations, and south-facing slopes at the higher sites. Most occurrences are flat to gentle slopes, along valley margins or toeslopes. This association is an open, sagebrush steppe habitat, dominated by <i>Artemisia tridentata ssp. wyomingensis</i>, which varies between 20-50% cover. <i>Peraphyllum ramosissimum</i> is always present, but at relatively low cover, ranging from 1-20%. Other shrubs present include occasional <i>Purshia tridentata, Amelanchier alnifolia</i> and <i>Ribes</i> sp. individuals. In degraded areas <i>Ericameria nauseosa, Chrysothamnus viscidiflorus</i>, and <i>Tetradymia canescens</i> occur. <i>Festuca idahoensis</i> provides the majority of the understory vegetation cover, with 10-50% cover, and is found at all sites. <i>Pseudoroegneria spicata, Achnatherum thurberianum, Poa secunda</i>, and <i>Elymus elymoides</i> can all be found. Forbs include <i>Lupinus, Astragalus, Balsamorhiza</i>, and <i>Phlox</i> species.
Accession Code:
urn:lsid:vegbank.org:commConcept:29957-{D1854B04-A4B6-4523-A27C-29FF538A51E1}
Plot-observations of this Community Concept:
0
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