Yellowstone National Park is about to implement a program to protect the park from the spread of terrestrial invasive species and to restore native plant communities as needed within the park. The management plan to accomplish this goal was signed last week by the National Park Service Intermountain Director. Under the approved plan, Yellowstone will use a wide-ranging combination of techniques and tools to manage invasive terrestrial vegetation. The overall goal of the invasive vegetation management program will be to preserve the biological diversity of native flora through prevention, containment, and control of invasive plants. Park Spokesman Al Nash says while the park has been addressing the control of invasive species on a “piece-meal” basis, the adoption of the new management plan provides a clear and comprehensive direction for these efforts.