Invasive, nonnative plants are recognized as a significant and growing threat to natural ecosystems worldwide. Invasive plants disrupt natural conditions by changing the physical, chemical, and biological attributes of the areas they invade. This often leads to changes in communities of native species, shifts in ecological interactions, alteration of large scale ecosystem processes, and ultimately, a reduction in native biodiversity. Although wilderness areas are widely valued for their native flora and fauna and intact natural processes, these core aspects of wilderness are susceptible to,...