Boosting nutrients gives a leg up to invasive species

Species invasions come at a high cost. In the United States, the annual cost to the economy tops $100 billion a year and invasive plant infestations affect 100 million acres. While it's tempting to focus attention on headline-grabbing cases of exceptionally fecund flora such as the kudzu vine, also known as "the vine that ate the South", basic questions remain about how and whether exotic species are functionally distinct from native species and why they tend to take over when introduced into new environments.

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