Name:
Pseudotsuga menziesii - Notholithocarpus densiflorus Forest Alliance
Reference:
NatureServe Biotics 2019
Description:
This alliance consists of mixed stands of <i>Pseudotsuga menziesii</i> and <i>Notholithocarpus densiflorus</i>, with other conifers or broadleaf evergreen trees, such as <i>Acer macrophyllum, Arbutus menziesii, Calocedrus decurrens, Chamaecyparis lawsoniana, Chrysolepis chrysophylla, Pinus ponderosa, Pinus lambertiana, Quercus chrysolepis, Quercus kelloggii, Taxus brevifolia, Tsuga heterophylla</i> and <i>Umbellularia californica</i>. Conifer cover is significant. Common shrubs include <i>Gaultheria shallon, Mahonia nervosa, Rhododendron macrophyllum, Toxicodendron diversilobum, Vaccinium ovatum</i>, and <i>Vaccinium uliginosum</i>. Trees are >75 m in height and the canopy is intermittent to continuous, two-tiered in older stands. The shrub layer is sparse to intermittent, and the herbaceous layer is sparse or abundant. This forest alliance occurs in the mountains of northern California (as far south as Santa Cruz) and southern Oregon, including the Klamath Mountains and the western portion of the southern Cascades and northern Sierra Nevada at elevations ranging from 100-1500 m. Habitats are raised stream benches, terraces, slopes, and ridges of all aspects. Soils are deep, well-drained, and mostly derived from sandstones and schists.
Accession Code:
urn:lsid:vegbank.org:commConcept:38019-{84EDCCC1-7E51-41EF-B7F8-8795F7631CEC}
Plot-observations of this Community Concept:
0
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