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Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest | Western Ecology Working Group of...
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Name: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest Reference: Western Ecology Working Group of... Description: This conifer forest association occurs very locally in southwestern Oregon and northern California. These forests form open stands with a dense shrub layer. Stands are found between 400-910 m elevation, as strips along perennial streams or on well protected benches with frequent seeps. The tree canopy averages 80% cover, and is dominated by <i>Chamaecyparis lawsoniana</i> and <i>Pseudotsuga menziesii</i>. <i>Taxus brevifolia</i> and <i>Lithocarpus densiflorus</i> are also common, and there are more species of <i>Pinus</i> found in this association than any other <i>Chamaecyparis lawsoniana</i> association. <i>Pinus attenuata, Pinus lambertiana, Pinus monticola, Arbutus menziesii, Umbellularia californica, Quercus chrysolepis</i>, and <i>Chrysolepis chrysophylla (= Castanopsis chrysophylla)</i> are all occasionally found in the tree layer. The typically dense shrub layer attains 97% cover and is a diagnostic character of this association. Because of the semi-mesic environments and ultramafic soils that this forest association occurs on, some of the hardwood species present are prevented from attaining tree stature. The shrub form of <i>Lithocarpus densiflorus</i> is the most common species in this layer. Other common shrubs include <i>Gaultheria shallon, Umbellularia californica, Vaccinium ovatum, Quercus chrysolepis</i>, and <i>Rhododendron occidentale</i>. The herbaceous layer only averages 8% cover and has very low species diversity. Only 6 species consistently achieve more than trace amounts of cover. <i>Polystichum munitum</i> and <i>Xerophyllum tenax</i> are the most common herbs. Ultramafic indicators are common among the herbs.  Accession Code: VB.CC.34041.CEGL000043 Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Nov-2014 to: 01-May-2019
	status: accepted This Community's Level: association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.689805 NatureServe Explorer   Translated: Port Orford-cedar - Douglas-fir / Tanoak / Salal Forest   Code: CEGL000043   Scientific: Chamaecyparis lawsoniana - Pseudotsuga menziesii / Lithocarpus densiflorus / Gaultheria shallon Forest