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In its natural state, chaparral is characterized by infrequent fires, with natural fire return intervals ranging between 30 years and over 150 years. [2] Mature chaparral (at least 60 years since time of last fire) is characterized by nearly impenetrable, dense thickets (except the more open desert chaparral).
The California chaparral and woodlands is a terrestrial ecoregion of southwestern Oregon, northern, central, and southern California (United States) and northwestern Baja California , located on the west coast of North America.
The California coastal sage and chaparral (Spanish: Salvia y chaparral costero de California) is a Mediterranean forests, woodlands, and scrub ecoregion, defined by the World Wildlife Fund, located in southwestern California (United States) and northwestern Baja California . It is part of the larger California chaparral and woodlands ecoregion.
The montane chaparral consists of a mosaic of sage scrub, chaparral, and montane species, depending on altitude. [9] The California interior chaparral and woodlands form a ring around the Central Valley , covering the hills around the Bay Area as well as the foothills of the Sierra Nevada. [ 10 ]
One common factor among chaparral, however, is that a minimum of 10 years is needed between fires for the chaparral to mature and set enough seed in the soil to create a fire resilient environment. As human activity increases the frequency of fires, the chaparral's ability to renew itself decreases, leading to elimination and degradation.
Larrea divaricata, commonly known as chaparral, is a small evergreen bush in the family Zygophyllaceae. It is native to arid regions of South America, where it is known as jarilla or jarillo . It was first described in 1800 by the Spanish botanist Antonio José Cavanilles .
Coastal sage scrub in the Santa Monica Mountains.Note slope effect. Coastal sage scrub on the Santa Rosa Plateau, with oak woodland in background.. Coastal sage scrub, also known as coastal scrub, CSS, or soft chaparral, is a low scrubland plant community of the California coastal sage and chaparral subecoregion, found in coastal California and northwestern coastal Baja California.
Montane chaparral is threatened chiefly by development, grazing, logging, conversion to vineyards, and too-frequent wildfire. [ 5 ] This is an ongoing threat notably in Southern California , but also in its northernmost reaches in Monterey County , where population pressure is most intense.