Exotic invasive species pose a significant threat to species of greatest conservation need (SGCN) throughout the Northeast in a number of ways. Impacts may be direct (affecting individual health or productivity) or indirect (affecting habitat and/or ecosystem processes) or both.  State wildlife action plans (SWAP) have identified wildlife species within each state that warrant some level of management concern. Causes for concern vary by species and typically loss of habitat, pollution, and other stressors are listed as contributors to population decreases.