; and (bb) modify the permit or lease to reflect the revised level of use. (II) Authorized level To ensure that there is a permanent reduction in the authorized level of grazing on the land covered by a permit or lease voluntarily relinquished under subclause (I), the Secretary shall not allow grazing use to exceed the authorized level established under that subclause. (4) Tribal rights Nothing in this section alters, modifies, enlarges, diminishes, or abrogates the treaty rights of any Indian Tribe. (5) Fish and wildlife (A) In general In accordance with section 4(d)(7) of the Wilderness Act ( 16 U.S.C. 1133(d)(7) ), nothing in this section affects the jurisdiction or responsibilities of the State with respect to fish and wildlife management in the State. (B) Management activities In furtherance of the purposes and principles of the Wilderness Act ( 16 U.S.C. 1131 et seq.), the Secretary may conduct any management activities in the wilderness areas designated by subsection (a) that are necessary to maintain or restore fish and wildlife populations and habitats, if the management activities are— (i) consistent with relevant wilderness management plans