Invasive species can be a threat to indigenous endangered species. Finally, human populations need help in coping with the needs of certain organisms, such as migratory birds, so that human activity and wildlife can coexist. Organisms are intentionally brought in for biological control, including insects, fish, snails, plant pathogens, and nematodes. Entry may be authorized under certain conditions. Risk assessment uses scientific information to determine numbers and kinds of organisms that have the potential to become established and harmful.
Sophisticated methodologies measure the level of risk.
Asian longhorned beetle, which kills hardwood trees, has been detected in New York, Chicago, and warehouses in several U.S. cities. These initiatives will minimize the likelihood of future Asian longhorned beetle introductions. Yellow star thistle is the most problematic weed in California. This individual will work on a wide variety of issues including yellow star thistle control. Cargo shipments are potential risks for the snakes to be moved to Hawaii and other places currently free of brown tree snake.