Modeling Wildlife Habitat Corridors in the Greater Grand Staircase-Escalante Ecosystem Dawn Hartley Center for Landscape Analysis The Wilderness Society 1424 Fourth Avenue, Suite 816 Seattle, WA 98101 and Gregory H. Aplet Center for Landscape Analysis The Wilderness Society 7475 Dakin Street, Suite 410 Denver, CO 80221 Abstract . The Grand Staircase-Escalante National Monument was established, in part, to protect landscape connectors, a resource about which very little is known. In this paper we present a methodology that may be applied to identify potential wildlife movement corridors, in the absence of direct, scientific observation, but where something is known about habitat quality. Our analysis of the Monument landscape suggests that there are a number of places that deserve further scrutiny as potential movement corridors, including the heart of the Kaiparowits Plateau, the East Fork of the Virgin River east of Zion National Park, and the Dixie National Forest northeast of Bryce Canyon National Park. While we do not imply that these are movement corridors, we believe that our analysis provides new insights into potential habitat connectivity. Key words: movement corridors, GIS modeling, least-cost path analysis, landscape ecology, roads, national monuments, Bureau of Land Management, Gap Analysis Program, Utah. Email: Gregory Aplet, greg_aplet@tws.org 173