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A.1326 | EcoArt 2002
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Name: A.1326
Reference: EcoArt 2002
Description: This alliance may be found in many subalpine, alpine, and arctic regions of the Holarctic, commonly encountered on wind-swept ridges below exposed ridgetops in the subalpine and alpine in the Rocky Mountains, Sierra Nevada, and Cascades. This alliance also includes uncommon communities that are found in rich fens in Colorado and calcareous fens in California. Soils are moderately deep, well-drained, with high organic matter content. Soil texture is often silt loam to sandy loam with coarse fragments. Fen soils are saturated due to a high water table. Vegetation included in this alliance is characterized by moderately dense to dense herbaceous canopy that is dominated by the cespitose perennial graminoid ~Kobresia myosuroides$. Several forbs are typically codominant; they include ~Geum rossii, Trifolium dasyphyllum, Trifolium nanum, Polygonum viviparum$, and ~Thalictrum alpinum$. Other graminoids can include ~Carex rupestris var. drummondiana, Deschampsia caespitosa, Poa glauca ssp. rupicola (= Poa rupicola)$, and ~Carex elynoides$. Other local codominants include ~Salix brachycarpa, Trichophorum pumilum (= Scirpus rollandii), Draba lonchocarpa var. lonchocarpa (= Draba nivalis var. elongata)$ in the California fen; ~Carex scirpoidea, Salix nivalis, Oxytropis campestris, Minuartia obtusiloba (= Arenaria obtusiloba)$, and ~Solidago multiradiata$ in the North Cascades; and ~Thalictrum alpinum$ and ~Juncus arcticus$ in the Colorado fens. Cryptogam cover is important is some stands. 
Accession Code: VB.CC.1098.A1326
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: KOBRESIA MYOSUROIDES HERBACEOUS ALLIANCE
  Code: A.1326
  Common: Pacific Bog Sedge Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Kobresia myosuroides Herbaceous Alliance