Invasive Species | Educating with Evidence | SIU

There have been many invasive species introduced all over the world; Copi is just one example. In order for a species to be considered invasive, it must have the following characteristics: non-native, introduced by humans, and causes damage. Introduction of an invasive species can be intentional or unintentional. For example, Copi were intentionally introduced  in the United States as a means to control vegetation in ponds. 

In contrast, the Emerald Ash Borer insect was arrived unintentionally on ornamental trees imported from northeastern Asia. Note that animals are not the only species that can become invasive, plants can be, too! For example, garlic mustard is an invasive plant that was originally brought to the United States to control erosion. This weedy species competes with native plants for moisture and vital nutrients in the soil and does not have a natural predator to help control its population. In order to better understand invasive species, flip through the flashcards and complete the following activity.