Animal invaders threaten protected areas worldwide

Xuan Liu (), Tim M. Blackburn, Tianjian Song, Xuyu Wang, Cong Huang and Yiming Li ()
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Xuan Liu: Institute of Zoology, Chinese Academy of Sciences
Tim M. Blackburn: University Colledge London
Tianjian Song: Institute of Zoology, Chinese Academy of Sciences
Xuyu Wang: Anhui University
Cong Huang: South China Normal University
Yiming Li: Institute of Zoology, Chinese Academy of Sciences

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Protected areas are the cornerstone of biodiversity conservation. However, alien species invasion is an increasing threat to biodiversity, and the extent to which protected areas worldwide are resistant to incursions of alien species remains poorly understood. Here, we investigate establishment by 894 terrestrial alien animals from 11 taxonomic groups including vertebrates and invertebrates across 199,957 protected areas at the global scale. We find that 95% of protected areas are environmentally suitable for establishment. Higher alien richness is observed in IUCN category-II national parks supposedly with stricter protection, and in larger protected areas with higher human footprint and more recent designation. Our results demonstrate that protected areas provide important protection from biological invasions, but invasions may become an increasingly dominant problem in the near future.

Date: 2020
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DOI: 10.1038/s41467-020-16719-2

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