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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A novel system for ranking and comparing the impacts of invasive species

As many invasive non-native (or alien) species pose a global threat to human well-being and livelihoods, an international team of researchers, including C·I·B researchers and associates, have recently developed a new transparent ranking system for plants and animals...

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C·I·B researchers assess the threat of alien plant species to the Serengeti

A recent study by C·I·B research fellow Dr Arne Witt and core team member Prof Brian van Wilgen, has found that over 50 alien plant species have established naturalised populations in the iconic Serengeti-Mara ecosystem in Kenya and Tanzania.

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