China's Belt and Road Initiative (BRI), launched five years ago, includes more than 120 countries, linked by six proposed land-based Economic Corridors between core cities and key ports along traditional international transport routes. But, as new evidence reported in the journalCurrent Biologyon January 24 shows, the risk of introducing invasive species into new areas is substantial as it would threaten native species and biodiversity.
The findings highlight an urgent need to evaluate and proactively manage the risks of biological invasions, the researchers say.
"Of particular concern, we find that the majority of both introduction hotspots and areas with high habitat suitability fall along the six proposed Economic Corridors," says Yiming Li of the Chinese Academy of Sciences.
To assess the risk of biological invasion in the new study, the researchers estimated the current invasion risk for 816 globally established alien terrestrial vertebrates across four taxa, including 98 amphibians, 177 reptiles, 391 birds, and 150 mammals across BRI countries. They calculated risk based on the likelihood of a species being introduced into a new area and the likelihood that it would become established if it were.
More than two-thirds of the BRI countries also have high habitat suitability, making it more likely that a species, once introduced, might remain. The researchers identify 14 "invasion hotspots" -- regions with both high introduction risk and high habitat suitability in many parts of the world, including the Caribbean Islands, northern Africa, eastern Europe, southeast Asia, and many more. Unfortunately, many of the areas most susceptible to biological invasion also fall along the six proposed Economic Corridors by BRI.
Their new study is a place to start, providing key information for those vertebrate species with the highest invasion risk in BRI countries, which can help to facilitate the participation of members of the general public and governmental agencies in the prevention of biological invasions. It can also help to inform resource managers working against invasive species within their areas.
Materials provided byCell Press。Note: Content may be edited for style and length.
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