Requires native animal and plant species within the Preserve to be protected in their natural and wild state. Prohibits activities in the Preserve that disturb native animal or plant species or their habitats, including the construction of roads or structures, logging, mining, and the use of any mechanized vehicle or equipment.
Designates all of Duke Island and the Duke Inventoried Roadless Area as the Duke Island Trumpeter Swan Wilderness Area.
Authorizes the Secretary of Agriculture to acquire: (1) inholdings in the Tongass National Forest from willing sellers; and (2) an inholding of exceptional importance for biological or scenic reasons through eminent domain at full fair market value.