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Effects on  Invasive Species  Invasive species are closely associated with biological pest controls because the environment in which they are invasive most likely does not contain their  natural  enemies. If  invasive species are not controlled, biodiversity may be at great threat in the affected area. An example of an  invasive species is the alligator weed. This plant was introduced to the United States from South America. This aquatic weed spreads very rapidly and causes many problems in lakes and rivers. The weed takes root in shallow water causing major problems such as, navigation, irrigation, and flood control. The flea beetle and two other biological controls were released in Florida. Because of their success, Florida banned the use of herbicides to control alligator weed three years after the controls were introduced ( Cofrancesco 2007). Biological controls for  invasive species also can have a negative impact on biodiversity. The cane toad, as mentioned previously, is a great example of trying to control an invasive species. The cane toad was introduced to eradicate an  invasive species. However, it became invasive, thus altering the biodiversity. The introduction of the cane toad could have potentially caused more of a disturbance in biodiversity than the targeted species did.

Effects on Future With further  research and more scientific experiments,  biological pest control could potentially play a huge role  in the future of pest prevention. Obviously,  biological control is being used among society today; however, it could someday exterminate the use of many pesticides and herbicides, thus indirectly increasing the amount of biodiversity. Since biological control could potentially have a large economic value, if found to be successful,  research and job fields are would increase continually. By increasing the knowledge of  biological control among more and more people, many new successful biological controls could arise in the future. This could eliminate the overuse of chemicals, in return indirectly increasing biodiversity. Biodiversity would increase because untargeted species that are exterminated with chemicals would no longer occur.