U.S. Department of the Interior


Date of this Version



Published in Monographs of the Western North American Naturalist 1, 2002, pp. 1-64.


This is the first treatment of the mammals of the Grand Staircase-Escalante National Monument (GSENM). GSENM was established in 1996 as a 1.7-million-acre (680,000-ha) federal land reserve under the jurisdiction of the Bureau of Land Management (BLM). To successfully manage this new monument, the BLM is presently developing a management action plan. To provide information for the proper management of mammal species of the area, we have reviewed background literature for each mammal potentially found within the Monument boundaries. We propose that a core area, surrounded by a buffer matrix, be used in GSENM and surrounding public lands to preserve ecological processes in their natural state. One hundred thirteen mammalian species are categorized as follows: 82 contemporary species, 21 species questionably present, 4 introduced species reportedly in the Monument, and 6 historical species. Altogether, potentially 107 mammalian species exist there currently. Of 82 contemporary species, 11 are listed in the Utah State Sensitive Species List, 1 in the Convention on the International Trade in Endangered Species of World Flora and Fauna (CITES), and 1 in the World Conservation Union (IUCN) Red Book. Mammals listed under the 1973 Endangered Species Act (ESA) are noted when applicable, as well as State of Utah listings as endangered, threatened, sensitive, or extirpated. For each mammalian species listed, we present in telegraphic style a life history account, sensitivity Status, and currently accepted nomenclature.