Login | Datasets | Logout
 

View Community Concepts - Detail

A.264 | EcoArt 2002
  click to update datacart
Name: A.264
Reference: EcoArt 2002
Description: The vegetation within this alliance occurs along the Pacific Coast from central California north through Oregon and Washington, usually along low-elevation (0-1000 m) streams or valley bottoms, but often forming a seral community in moist coniferous forests. A disjunct of this alliance may possibly occur on moist slopes and valleys of northern Idaho between 400 and 900 m in elevation. In both the coastal and interior regions, this alliance is usually associated with ~Tsuga heterophylla / Thuja plicata$ forest. ~Alnus rubra$ is well-adapted to wet soil conditions and is highly shade-intolerant. It grows best in riparian habitats of western Oregon and Washington on alluvial valley bottom landforms and adjacent moist toeslopes. Communities within this type are usually strongly dominated by ~Alnus rubra$, which forms a diffuse canopy. Emergent conifers, such as ~Pseudotsuga menziesii$ or ~Picea sitchensis$, may be present, depending upon stand history. ~Acer macrophyllum$ may also be present in the tree stratum. The forest undergrowth is usually species-rich and well-developed compared to adjacent conifer forests. Common shrub species in stands of this alliance include ~Rubus spectabilis, Sambucus racemosa var. melanocarpa, Acer circinatum$, and ~Menziesia ferruginea$. The herbaceous layer is often well-developed, with ~Oxalis oregana, Polystichum munitum$, and ~Stachys mexicana$ particularly common. 
Accession Code: VB.CC.1874.A264
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: I.B.2.N.a
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: ALNUS RUBRA FOREST ALLIANCE
  Common: Red Alder Forest Alliance
  Code: A.264
(convergence) and Synonyms:
(undetermined) Alnus rubra Forest Alliance