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Coastal sage scrub series of western Riverside County, California

Madrono 44(1): 95-105, Jan -March

Coastal sage scrub series of western Riverside County, California

The widely used term "Riversidian sage scrub" distinguishes coastal sage scrub in interior cismontane southern California from stands elsewhere but does not account for the considerable variation among stands within the region. Coastal sage scrub classification has generally emphasized either regional or floristic variation. We collected data at 181 coastal sage scrub sites in western Riverside County and classified them using multivariate cluster analyses of structural and floristic variables of shrub canopies. Roughly half of the sites fell into seven coastal sage scrub "series," largely comparable to the six interior basin "associations" described by Kirkpatrick and Hutchinson (1977). Our analysis splits Kirkpatrick and Hutchinson's Artemisia californica-Eriogonum fasciculatum-Salvia apiana association into three series; we did not sample their Lepidospartum squamatum-Eriodictyon crassifolium-Yucca whipplei association; and we recognize a deerweed series not sampled in their work. Similarities to the earlier analysis indicate that classification of this vegetation is largely repeatable, while discrepancies result from differing methodology and interpretation. The large proportion of unclassified plots suggests that these series represent segments of continua rather than discrete communities. We encourage land use planners to recognize variation among coastal sage scrub series within geographic regions to assure adequate conservation planning.

Accession: 008338315

DOI: 10.2307/41425182

Related references

Minnich, R.A.; Dezzani, R.J., 1998: Historical decline of coastal sage scrub in the Riverside-Perris Plain, California. Western Birds 29(4): 366-391

Weaver, Kenneth L., 1998: Coastal sage scrub variations of San Diego County and their influence on the distribution of the California gnatcatcher. Western Birds, 294: 392-405

Rubinoff, Daniel, 2001: Evaluating the California Gnatcatcher as an umbrella species for conservation of southern California coastal sage scrub. Designing reserves that preserve the habitat of many coexisting and threatened species often involves use of conservation surrogates, such as umbrella species. Typically, animals with legal protection are used as umbrella species, and these select...

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Keeley, J.; Keeley, S., 1984: Postfire recovery of California coastal sage scrub. American midland naturalist 111(1): 105-117

Westman, W.E., 1979: Oxidant effects on California coastal sage scrub. Of 43 habitat varieties measured when attempting to find causes for the reduced cover of native spp. including Salvia, Eriogonum and Encelia spp. of coastal sage scrub in certain S. Californian sites, the mean annual conc. of oxidants (av. 18 p.p....

Gray, Jt, 1983: Competition for light and a dynamic boundary between chaparral and coastal sage scrub found in the Santa Monica Mountains in coastal southern California, Ceanothus. Madrono 30(1): 43-49

Minnich, Ra, 1983: Fire mosaics in southern California and northern Baja California Severe wildfires, grassland, coastal sage scrub, and chaparral, Mexico. Science 219(4590): 1287-1294

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