Name:
Picea breweriana - Abies lowiana Forest Alliance
Reference:
NatureServe Biotics 2019
Description:
This is a mixed conifer alliance dominated by <i>Abies lowiana, Abies procera, Abies magnifica var. shastensis, Picea breweriana</i>, and <i>Pseudotsuga menziesii</i> with <i>Chamaecyparis lawsoniana</i> or <i>Pinus lambertiana</i> codominating in some stands. <i>Picea breweriana</i> is diagnostic of these stands, because it has the most limited geographic range, without which stands belong to a different alliance. Broad-leaved trees may also be present and include <i>Quercus sadleriana, Quercus vacciniifolia, Quercus kelloggii, Chrysolepis chrysophylla</i>, and <i>Notholithocarpus densiflorus</i>. Shrub layers include <i>Arctostaphylos nevadensis, Chimaphila umbellata, Holodiscus discolor, Mahonia nervosa, Paxistima myrsinites, Rosa gymnocarpa, Vaccinium membranaceum</i>, or <i>Vaccinium parvifolium</i>. The herbaceous layer is typically sparse with 12-25% cover. Forests are found at relatively high (subalpine) elevations (1170-1560 m) within the rainshadow of the Coast Ranges. Stands occur on steep rugged mountain slopes and benches but not in valleys. Slopes are moderate to steep, and aspects range from southwesterly to northern. Parent materials are primarily granitics, gabbro, diorite, granodiorite and andesite with some metamorphics. These forests occur in the Klamath Mountains of southwestern Oregon and northern California.
Accession Code:
urn:lsid:vegbank.org:commConcept:38026-{23231E82-AEAC-4920-86AE-20676FF85EAF}
Plot-observations of this Community Concept:
0
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