Read more about the article One thing often leads to another: the case of secondary invasion
Measuring the species richness and cover of secondary invaders in the field (Photo credit: Mashudu Mashau)

One thing often leads to another: the case of secondary invasion

Clearing the invasive alien tree Port Jackson (Acacia saligna) doesn't necessarily lead to the recovery of native plant communities because secondary invaders may be dominant and persist up to three years after clearing at levels similar to, or higher than the first year after clearing.

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Read more about the article AC21 Postgraduate course: Invasions Science for society
At a site of habitat restoration, AC21 students look at images of the site before it was restored 12 years ago, and learn about the need for continuing work

AC21 Postgraduate course: Invasions Science for society

Invasive species offer many important challenges to society. Their presence is intrinsically linked to human actions, but their impacts are felt across a wide range of environmental and socio-economic levels.

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How network theory can help understand and predict biological invasions

Understanding and predicting biological invasions is challenging because of the large number and complexity of interacting players. A recent study by a team of international researchers, including former C·I·B post-doctoral associate Wolf-Christian Saul, reviews the findings from network ecology...

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Read more about the article Mexican sunflowers are harmful to rural African farmers
Mexican sunflowers (Tithonia diversifolia) are invasive species that are widely distributed across southern and eastern Africa, where they impact negatively on rural livelihoods and biodiversity. (Photo credit: Greg Forsyth)

Mexican sunflowers are harmful to rural African farmers

Mexican sunflowers (Tithonia species) are promoted as a green manure, but a survey of rural farmers revealed that these species are invasive, and have substantial negative impacts in addition to their benefits.

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Wrapping yachts — the answer to dealing to heavily fouled vessels that have foreign species on them?

Many marine organisms move around the world on the bottom of ships and yachts. This living layer is commonly referred to as hull fouling. Unfortunately, hull fouling not only increases both the drag and fuel consumption of vessels, but is also one of the major contributors to the introduction and spread of invasive species.

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