; and (ii) should be studied to determine the role of the areas in maintaining biological diversity in the Northern Rockies Bioregion; (24) many areas of public land— (A) have been damaged and experienced a reduction in productivity due to unwise development practices, which have also impaired ecosystem function and biological diversity, such as the Island Park area adjacent to Yellowstone National Park, which contains large clear-cut areas that border the park boundary; and (B) should be returned to the former ecological health and native diversity of the areas through efforts— (i) to ensure that vital ecosystem components are restored, especially in areas in which wildlife travel corridors and native fish and wildlife populations have been damaged or eliminated; and (ii) to ensure and maintain genetic interchange, biological diversity, and restoration of native species diversity throughout the Northern Rockies Bioregion; (25) backcountry areas of the National Park System have been damaged by inappropriate management, despite policies that require that recommended wilderness be administered as wilderness; (26) an emphasis on structures and motorized equipment, and in some instances developed backcountry campsites, in backcountry areas of the National Park System has detracted from and degraded the wilderness character of those backcountry areas; (27) Federal agencies entrusted with managing the natural resources of the Northern Rockies Bioregion— (A) operate under contradictory congressional mandates; and (B) are in dissension over management policies that involve common resources and greater ecosystems; (28) Federal agency structures and regulatory mechanisms as of the date of enactment of this Act have proven unsatisfactory for the responsible management of nationally important ecosystems on public land; (29) Federal laws and regulations as of the date of enactment of this Act have not been sufficient to establish and maintain the accountability of Federal agencies for public resources