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A.109 | EcoArt 2002
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Name: A.109
Reference: EcoArt 2002
Description: These giant mixed-conifer forests are restricted to the coastal fog belt in the extreme southwestern part of Oregon and northern California, with scattered sites south to the central coast. Elevations are below 500 m in elevation in Oregon and 900 m in California. Stands occupy steep slopes and ridges of coastal mountains on any aspect. In southwestern Oregon they also occur on moist toeslopes and valleys. These stands generally occur in the upper part of the coastal fog belt, inland of the very wet coastal stands of nearly pure ~Sequoia sempervirens$. Soils are shallow and well-drained. These giant conifer forests are found in the coastal fog zone of southwestern Oregon and northwestern California. The canopy of these forests is dominated by ~Pseudotsuga menziesii$ and ~Sequoia sempervirens$ trees that often exceed 60 m in height. There is almost always a subcanopy of ~Lithocarpus densiflorus$, usually between 10-30 m tall, occasionally codominant with ~Umbellularia californica$. ~Lithocarpus densiflorus$ (1-70%) also dominates the shrub layer with both ~Rhododendron macrophyllum$ (2-60%) and ~Vaccinium ovatum$ (10-70%). ~Gaultheria shallon$ and ~Mahonia nervosa$ are common, and in moist pockets ~Polystichum munitum$ and ~Oxalis oregana$ can be found. In wetter northern stands, ~Polystichum munitum, Oxalis oregana$, and ~Clintonia andrewsiana$ dominate the herbaceous layer. Other forbs include ~Lotus crassifolius, Arnica cordifolia$, and ~Xerophyllum tenax$. 
Accession Code: VB.CC.860.A109
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.A.8.N.a
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: SEQUOIA SEMPERVIRENS - PSEUDOTSUGA MENZIESII FOREST ALLIANCE
  Code: A.109
  Common: Redwood - Douglas-fir Forest Alliance
(convergence) and Synonyms:
(undetermined) Sequoia sempervirens - Pseudotsuga menziesii Forest Alliance