Invasive species are organisms that evolved in one part of the world but now occur in others and cause harm to environment, economy, and/or human health.  Invasive species are a dangerous ecological threat.  They threaten the survival of native plants and animals, interfere with ecosystem functions, and hybridize with native species resulting in negative genetic impacts.  In addition, invasive species impede industry, threaten agriculture, endanger human health, and are becoming increasingly difficult and costly to control.  Rapid global commercialization and human travel are increasing the potential of these species to spread and invade local ecosystems.  A wide variety of exotic species (giant Salvinia, water hyacinth, Brazilian peppertree, deep-rooted sedge, cactus moth, and zebra mussel) threaten the health of Gulf Coast habitats, yet few people know that these pests and pathogens are already present or poised to invade.

The Citizen Science program (http://www.texasinvasives.org) empowers citizens to take control of invasive species in their natural surroundings through education, information gathering, and management actions.  The hands-on participation of citizen groups increases interest, understanding, and participation in the scientific efforts that help reduce the profound economic and ecological consequences of invasive species.  Through the application of information technology (online databases and real-time mapping applications) scientists and citizens can work together to solve the invasive species problem.