Desert: the word conjures images of vast, barren landscapes of sand, rocks, and a few twisted, thorny plants baking under an unrelenting sun. Contrary to appearances, however, deserts can harbor surprising biological diversity, although much of it is not readily apparent. In response to extreme environmental conditions, many species are secretive, nocturnal, or active only seaonally. These conditions have led to a high number of endemic species, or those found only within a restricted range. Desert habitats also can be surprising; many are quite fragile and, once damaged, difficult to restore. Such characteristics make deserts challenging but intriguing places for us to conserve endangered species and the ecosystems upon which they depend.

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