; (2) to designate certain National Forest System lands, public lands administered by the Bureau of Land Management, and watercourses on these lands in the States of Montana, Idaho, and Wyoming as components of the National Wild and Scenic Rivers System; (3) to prioritize areas for wildland recovery to help restore biological diversity and native species; and (4) to establish a system of biological connecting corridors between the core ecosystems in the Northern Rockies Bioregion. (b) Purpose of Designations The designations made by this Act are made in order to— (1) promote, perpetuate, and preserve the wilderness character of the area so designated; (2) protect water quality, watersheds, and wildlife habitat, including that of species listed as threatened or endangered under section 4(c) of the Endangered Species Act of 1973 ( 16 U.S.C. 1533(c) ); (3) protect the ecological integrity and contiguity of major wild land ecosystems and their interconnecting corridors identified by the United States Fish and Wildlife Service, and other sources; (4) protect and maintain biological and native species diversity and dispersal throughout the Northern Rockies Bioregion; (5) promote and ensure interagency cooperation in the implementation of integrated, holistic ecosystem management and protection of the ecosystems and corridors covered by this Act based upon principles from conservation biology; (6) preserve scenic, historic, and cultural resources; (7) promote scientific research, primitive recreation, solitude, physical and mental challenge, and inspiration for the benefit of all of the American people; (8) avoid the misinvestment of scarce capital in lands of marginal timber value