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The Bitterwater Planning Unit is bounded on the west by Death Valley National Monument, on the north and east by the California Nevada border, and on the south by the Inyo-san Bernadino County Line. The northern half of the Owlshead/ Amargosa Planning Unit is bounded on the north by Death Valley National Monument and the Inyo San Bernadino County line, on the west by the U.S. Ordnance Test Station and Camp Irwin Military Reservation, and includes the upper 1/3 of township 17 in the south

Undesirable invasive plants are infesting public and private lands in this country at an alarming rate. These nonnative species destroy native habitats, threaten endangered plants and animals, interfere with recreation and transportation, and cause economic losses as land values and productivity decline. Various methods are used to suppress invasive plants, from herbicides to burning to cultivation. Classic biological control--in which selected host-specific, plant-attacking insects, mites, nematodes, and pathogens are introduced from the invasive plant's native lands--provides an additional...