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A.931 | EcoArt 2002
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Name: A.931
Reference: EcoArt 2002
Description: These shrublands occur in mesic subalpine and upper montane meadows in the northern Cascade Mountains in Washington. Elevations range from 1500-1800 m. The climate is maritime-influenced with deep winter snowpack. These dense shrublands are often extensive, occupying broad, steep (60%), south-facing colluvial slopes, as well as smaller avalanche chutes. Sites are very well-drained and are typically snow-free between April and May. Substrates are moderately deep to deep, loamy, residual or regosolic soils with pH of 5.0-5.6. The soil parent material is mica schist. The upper canopy is a moderately dense to dense short-shrub layer that is dominated by the cold-deciduous shrub ~Rubus parviflorus$. The lush, tall herbaceous layer is typically dense and is codominated by the perennial forb ~Chamerion angustifolium (= Epilobium angustifolium)$ and the fern ~Pteridium aquilinum var. pubescens$. There is also moderate cover or high frequency of ~Valeriana sitchensis, Viola glabella, Heracleum maximum, Thalictrum occidentale, Hydrophyllum occidentale, Veratrum viride$, and lower cover and frequency of ~Polygonum bistortoides, Lupinus arcticus ssp. subalpinus (= Lupinus latifolius var. subalpinus), Lathyrus nevadensis, Eucephalus engelmannii (= Aster engelmannii)$, and ~Saussurea americana$. Graminoids, such as ~Elymus hirsutus, Bromus carinatus$, and ~Carex spectabilis$, are quite common. Adjacent vegetation includes subalpine forests dominated by ~Abies amabilis$ or ~Abies concolor$. 
Accession Code: VB.CC.2557.A931
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: III.B.2.N.b
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: RUBUS PARVIFLORUS SHRUBLAND ALLIANCE
  Code: A.931
  Common: Thimbleberry Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Rubus parviflorus Shrubland Alliance