Name:
Baccharis pilularis Scrub Alliance
Reference:
NatureServe Biotics 2019
Description:
The dominant or codominant species <i>Baccharis pilularis</i> behaves similarly in southern California mountains as it does in other areas of northern California where it often forms the first wave of woody species to recolonize cleared land. Other shrubs species vary depending on the habitat and location within California, but even locally, no other shrub species are consistently present. In dune shrublands of the northern California and Oregon coasts, <i>Scrophularia californica, Solidago simplex var. spathulata</i>, and <i>Anaphalis margaritacea</i> are common forbs. In older dune stands, tree species relatively tolerant of salt and wind, such as <i>Alnus rubra</i> and <i>Pinus contorta</i>, may become established. Away from the immediate coast, <i>Baccharis pilularis</i> forms shrublands with several other shrubs species. <i>Artemisia pycnocephala, Ceanothus thyrsiflorus, Eriodictyon californicum, Eriophyllum stoechadifolium, Gaultheria shallon, Lupinus</i> spp., <i>Rubus ursinus</i>, and <i>Toxicodendron diversilobum</i> are all common associates. Common herbaceous species include <i>Castilleja latifolia, Heracleum maximum</i>, and <i>Polystichum munitum</i>. South of San Francisco Bay, the coastal scrub is similar in structure but different in species composition. Associated shrub species include <i>Artemisia californica, Diplacus aurantiacus, Eriogonum fasciculatum, Eriophyllum confertiflorum</i>, and <i>Salvia</i> spp. Herbaceous species decrease in abundance and non-native annual grasses, such as <i>Avena</i> spp., <i>Bromus</i> spp., and <i>Lolium</i> spp., increase in cover. This alliance occurs from southern Oregon to central and southern California along the Pacific Coast and in the interior of the Coast Ranges, as well as in the Transverse Ranges. The shrublands are scattered on river mouths, streamsides, terraces, stabilized dunes of coastal bars, spits along coastline, coastal bluffs, open slopes, and ridges.
Accession Code:
urn:lsid:vegbank.org:commConcept:38116-{18657A62-100A-4ADC-9DA4-792272575F45}
Plot-observations of this Community Concept:
0
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