The study looked at a subset of introduced species, herbivores weighing more than 99 pounds. Many such animals are considered invasive: pigs in Hawaii and the American South; horses and burros in ...

Stated plainly, the vast majority of intentionally or unintentionally introduced species are not a threat to native ecosystems. Governments and conservation organizations spend an enormous amount ...

The researchers included more than 5 million measurements from individual trees across much of eastern North America and showed the rate at which introduced species are spreading has increased ...

“There is nothing simple or straightforward about ecosystems—but scientists that work on introduced species’ impact, they don’t go in making the assumption that something is ‘good’ or ...

In this Issue, students will examine published data that address the ecological consequences of introduced species. Activities engage students in data analysis and hypothesis testing and will increase ...

In a new study, researchers used more than 5 million measurements from individual trees across much of eastern North America and showed the rate at which introduced species are spreading has ...