HARTMAN MULTIMEDIA
Nature Based Multimedia Information Systems
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HARTMAN MULTIMEDIA
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Sky Oaks Several types of vegetation are found at this field
station which borders Anza-Borrego Desert State Park, Cleveland
National Forest and Bureau of Land Management land. Much of the area is covered by a mixed chaparral,
chamise chaparral and red shank chaparral. Adenostoma sparsifolium is
frequently the dominant and occasionally occurs in almost pure stands.
Other species in the chaparral include Arctostaphylos pungens, Ceanothus
greggii, Ceanothus leucodermis, mountain mahogany, Cercocarpus
betuloides, scrub oak,
Quercus sp., and Rhamnus spp. In
portions of the area, chamise, Adenostoma fasciculatum, is predominant in the
chaparral. On the lower slopes of the hills there are many
undisturbed oak woodlands, with coast live oak, Quercus agrifolia, as the main
element of the overstory. Isolated
Coulter pines, Pinus coulteri, are found on the property. Coniferous stands
occur on surrounding hills. There
are also extensive grasslands with such native species as Stipa coronata
(Achnatherum sp.) and
Aristida purpurea var. parishii, as well as various exotics. A perennial stream flows through the area.
It supports a riparian association with sycamore, Platanus racemosa,
cottonwood, Populus fremontii, and willows, Salix spp.
In addition, there are several intermittent streams and perennial ponds. Eight soil types are found on the station at
approximately the same elevation. There
are Tollhouse, Sheep-head, Mottsville, La Posta, Bull Trail, Calpine, acid
igneous rock land, and rough broken land. Integrity: The area is virtually undisturbed save for
the laboratory and dormitory buildings and access roads. The last major fire in
the area was in 1928. Some chaparral is over 78 years old.
Line power, water and phone are available. Use: Education, research, demonstration. Ref: Baseline
studies on the archaeology, soils, geology, hydrology, vegetation and fauna are
available from the Director, Biological Field Stations, San Diego State
University. June 1982
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