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Carex pyrenaica Herbaceous Alliance | Western Ecology Working Group of...
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Name: Carex pyrenaica Herbaceous Alliance Reference: Western Ecology Working Group of... Description: Vegetation within this alliance occurs on cliff crevices, ledges, open slopes, and meadows above timberline. Elevations range from 3000-3600 m. Communities occur on sites with heavy snow accumulations, typically on north-, northeast-, or east-facing slopes that range in slope from 2-36%. Carex pyrenaica requires the longest snow cover; therefore, occurrences are located next to places where snow lasts the longest. Soils are poorly developed, with thin A horizons. Average pH is 5.9 for stands in the Front Range of Colorado. Vegetation types within this alliance are classified as short alpine or subalpine dry bunch grasslands. Carex pyrenaica dominates the herbaceous layer with Erigeron melanocephalus. Other constants are Juncus drummondii and Antennaria alpina. Polytrichum piliferum is a constant in the moss layer as well as Pohlia obtusifolia.  Accession Code: VB.CC.25781.CAREXPYRENAICAH Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Carex pyrenaica Herbaceous Alliance   Translated: Pyrenean Sedge Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.124854 NatureServe Explorer   Code: A.1320