Read more about the article How many invasive species can our ecosystems tolerate?
Mice are the most widely distributed vertebrate in the world due to historical shipping and trade patterns. The image shows a mouse hitchhiking on marine ropes (photo: James Russell). This is but one example of the many species that are introduced accidentally as a result of tourism. More work is needed to fully understand the role of different pathways in introducing non-native species and to find ways of managing these pathways to reduce the associated risks.

How many invasive species can our ecosystems tolerate?

An increase of 20 to 30 percent in the number of invasive alien species will lead to dramatic biodiversity loss worldwide. This is one conclusion of a study by an international team of researchers led by C·I·B associate Franz Essl that was published in the journal Global Change Biology.

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