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A.1320 | EcoArt 2002
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Name: A.1320
Reference: EcoArt 2002
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.1093.A1320
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.A.5.N.h
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: CAREX PYRENAICA HERBACEOUS ALLIANCE
  Code: A.1320
  Common: Pyrenean Sedge Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Carex pyrenaica Herbaceous Alliance