UN invasive species report reveals scale of threat to nature and people – and how to manage it

By Kelvin Peh, Associate Professor of Conservation Science, University of Southampton

More than 3,500 invasive alien species are seriously compromising human wellbeing and causing irreversible damage to ecosystems, according to the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). While some alien species actually benefit humans, the UN organisation estimates 10% threaten nature and people.

Alien species are plants, animals or other organisms that are introduced to new regions by human activities. A subset of them, known as invasive alien species, can make native species go extinct, spread diseases such as malaria, Zika and West…

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