Burns Piñon Ridge Reserve

Burns Piñon Ridge Reserve
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Location	San Bernardino County, California
Coordinates	34°08′57″N 116°27′15″W / 34.14917°N 116.45417°W / 34.14917; -116.45417
Area	303 acres (0.473 sq mi)
Established	1972
Governing body	University of California, Irvine
Website	http://burns.ucnrs.org/

The Burns Piñon Ridge Reserve is a 303-acre (123 ha) nature reserve that is part of the University of California Natural Reserve System.^[1] It is located near Yucca Valley, California in San Bernardino County, California. Administered by UC Irvine, the reserve is owned by the University of California and managed for teaching and research.^[2]

Reserve lands form a transition zone, or ecotone, between the high-elevation ecosystems of the San Bernardino Mountains and the lower, hotter Mojave Desert.

History

From 1947 to 1972, the reserve was owned by Bruce and Jean Burns. The couple built a home and raised a family there before selling much of the property to the University. The Burns house now serves as a field station that provides accommodations for reserve visitors. The University purchased the remainder of the Burns land in 1990.^[1]

Geology

The most salient feature of the reserve are its weathered boulder hills. Because the reserve lies in the rain shadow of the San Bernardino Mountains, millions of years of drying eroded the soils. Wind blew away much of the soil, exposing the granitic bedrock below. Additional spalling produced the characteristic look of the reserve's boulder piles.

Ecology

Habitats at the reserve include desert, a freshwater seep, and a wash. Vegetation typical of the high elevation Mojave, such as

Perennially moist lower Railroad Wash sustains Muller's oak (Quercus cornelius-mulleri) and rushes (Juncus sp.)

Two species of quail mingle on the reserve, mountain (