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Camp Pendleton

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The Marine Corps' Camp Pendleton covers over 50,000 hectares (125,000 acres) of rolling and mountainous terrain, ranging from sea level to over 900 meters (3,000 feet), and contains at least seven plant communities.

The major community is chaparral, consisting of scrub oak, Quercus sp, Ceanothus spp., laurel sumac, Malosma laurina, sugar bush, Rhus ovata, toyon, Heteromeles arbutifolia, and chamise, Adenostoma fasciculatum. Coastal sage scrub, with California sagebrush, Artemisia californica, and California buckwheat, Eriogonum fasciculatum, the dominants, covers significant portions of the area.  There also are stands of southern oak woodland with interior live oak, Quercus wislizenii, coast live, Quercus agrifolia, and Engelmann, Quercus engelmannii.

Several excellent stands of grassland occur in the uplands (see Camp Pendleton Grasslands).  Along the coast there are both salt marshes (see Santa Margarita River Estuary) and some coastal strand.  The more conspicuous species in the latter are an introduced ice plant, Mesembryanthemum nodiflorum, and the sand verbena, Abronia umbellata.

Along the watercourses, particularly the Santa Margarita River and San Mateo Creek, are good stands of a riparian community, with sycamore, Platanus racemosa, white alder, Alnus rhombifolia, canyon live oak, Quercus chrysolepis, black willow, Salix gooddingii, and California bay, Umbellularia californica, which here is nearing its southern limit.

Several rare plants are found within the Camp; they are Dudleya viscida, Dudleya multicaulis, Eryngium aristulatum var. parishii, and Horkelia truncata.

Animal life is typical of the coastal and inland areas and includes such mammals as the mountain lion, Felis concolor, bobcat, Lynx rufus, and badger, Taxidea taxus.  Among the more noteworthy reptiles found on the base are the orange-throated whiptail lizard, Cnemidophorus hyperythrus, rosy boa, Lichanura trivirgata, the red diamond, Western, and speckled rattlesnakes, Crotalus ruber, Crotalus viridis and Crotalus mitchelli, California lyre snake, Trimorphodon vandenburghi, black-headed snake, Tantilla planiceps, and the patch-nosed snake, Salvadora hexalepis.

Geologically, the area is quite complex and includes rocks ranging in age from the early Mesozoic metavolcanics and granitics,through upper Cretaceous sedimentaries, to Pleistocene marine terrace formations and recent alluvium.  Of note is the grayish-green outcrop of the mid-Miocene San Onofre breccia on the slopes of San Onofre Mountain.  Also in this area can be seen six marine terraces, some with westerly dips up to 25 degrees.  The Christianitus fault passes to the north of the mountain and separates the breccia and upper Miocene Capistrano formation from the Pliocene San Mateo formation.

Integrity:  There are numerous buildings and other facilities, and portions of the area are farmed. However, despite the use of the area for intensive training purposes, portions are in excellent condition, others are not.  The vast open space allows for a free movement of wildlife.

Use:  Restricted. 

April 1977  

San Diego
Inventory of California Natural Areas
Revision © 2005 Steven Louis Hartman

 

 

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Last modified: December 06, 2005