Name:
Pinus attenuata - Pinus coulteri - Pinus sabiniana Woodland Alliance
Reference:
NatureServe Biotics 2019
Description:
This alliance consists of woodlands dominated by <i>Pinus attenuata, Pinus coulteri</i>, and/or <i>Pinus sabiniana</i> in the canopy. Other trees present may include <i>Pinus monticola, Pinus ponderosa, Pseudotsuga macrocarpa, Quercus agrifolia, Quercus chrysolepis, Quercus douglasii, Quercus kelloggii, Quercus lobata</i>, and <i>Quercus wislizeni</i>. Shrubs are continuous in cover to infrequent, and the herbaceous layer is sparse. Shrubs could include <i>Adenostoma fasciculatum, Arctostaphylos columbiana, Arctostaphylos glandulosa, Arctostaphylos glauca, Arctostaphylos patula, Arctostaphylos pungens, Arctostaphylos viscida, Ceanothus cuneatus, Ceanothus papillosus, Cercocarpus montanus var. glaber, Quercus durata</i>, and <i>Quercus vacciniifolia</i>. This woodland alliance occurs in Baja California, Mexico, and throughout California's foothills and mountains on all aspects on ridges and upper slopes. Stands are found at elevations ranging from 300-2100 m. The soils are usually shallow, infertile, and moderately to excessively drained. The surface is often covered with stones and rock outcrops. This region has a Mediterranean climate with most precipitation falling between November and May. Summers are warm and dry, winters are mild. The unusually large range of this alliance is indicative of its tolerance to varied environmental factors such as precipitation. In the southern reaches of the range, this alliance may receive fewer than 60 cm of rain per year; at the northern extreme perhaps as much as 150 cm per year.
Accession Code:
urn:lsid:vegbank.org:commConcept:38643-{3E669CFB-69B1-496F-8127-12FCAA330632}
Plot-observations of this Community Concept:
0
|
