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How many invasive species are there in the U.S?

April 26, 2017Invasive species

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How many invasive species are there in the U.S?

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Although the numbers vary widely, some of the current research estimates that there are approximately 50,000 (Pimentel, 2004) non-native species in the United States today. However, of that 50,000 species, approximately 4,300 have been considered invasive species (Corn et. al, 1999).