Invasive Species & Our National Forests

Sep 2

1 min read

Nonnative invasive species (NNIS) are entering the United States at accelerating rates due to global travel, trade, and expanding human development, posing a serious threat to forest ecosystems. As summarized in Impacts of Nonnative Invasive Species on U.S. Forests and Recommendations for Policy and Management, these species can alter ecological trajectories, suppress rare native plants and animals, reduce forest productivity, and degrade wildlife habitat. Under Federal Executive Order 13112, agencies are required to prevent introductions, control established invasives, and educate the public. The report defines key concepts such as alien species, introduction, control, native species, and invasive species, emphasizing that invasives are those nonnative organisms likely to cause economic, environmental, or human‑health harm. Recognizing the scale of the problem, the Society of American Foresters convened a team to assess NNIS impacts and outline feasible strategies to maintain sustainable forests.

The authors recommend expanding early detection, strengthening quarantine enforcement, improving forest‑health training, building scientific and operational capacity, and increasing cross‑agency collaboration. Volunteers play a critical role in this work. Citizen stewards can help by learning to identify common invasive plants and pests, reporting new sightings, participating in removal events, cleaning boots and gear to prevent spread, and sharing information within their communities. Because NNIS threaten the ability of future generations to benefit from healthy forests, only a sustained, coordinated effort — supported by agencies, policymakers, and engaged volunteers — can meaningfully address the challenge.