Forest ecosystems throughout the Southeast Region are exposed to a range of natural, introduced, and anthropogenic stressors. Stressors such as invasive plants, forest pests, and diseases are expected to become more damaging under climate change, and these factors may interact in unpredictable ways. The southern pine beetle is already the most destructive pest in the region's forests, and longer growing seasons could allow populations of the pest to expand more rapidly. Cogongrass and kudzu are expected to expand into new territory under climate change, and both of these species have cascading effects on disturbance regimes and diversity.