New study reveals the massive ecological and economic impacts of woody weed invasion in Ethiopia

Prosopis clearing along Awash river.jpg
A Prosopis clearing along the Awash river

CABI scientists have revealed the massive ecological and economic impacts that the invasive alien tree Prosopis juliflora has had across the Afar Region of north eastern Ethiopia.

Dr Urs Schaffner, who is supervising lead author Mr Hailu Shiferaw for his PhD studies, contributed to the Science of The Total Environment published research which shows that the devastating Prosopis was a major reason for losses in annual ecosystem service values in Afar Region estimated at US $602 million in just 31 years.

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Classical biological control of Drosophila suzukii with Asian parasitoids

Spotted Wing Drosophila (Cherry Vinegar Fly) Drosophila suzukii
Spotted-Wing Drosophila, Drosophila suzukii

The soft-fruit pest Drosophila suzukii, or spotted-wing drosophila (SWD), is particularly difficult to control because of its short generation time and its very broad host range, including many wild and ornamental plants. The pest has been causing damage to fruit crop in Europe as well as North America where damages costing $500million were reported in the USA. The pest arrived in Europe from Asia in 2008, presumably in the larval stage of infested fruit. The fruit fly attacks by depositing its eggs in ripe and healthy fruit where the larvae quickly hatch destroying the fruit.

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The economic impact of invasive species on Great Britain revealed

A report, written by CABI for the Scottish government, Defra and the Welsh Assembly Government, estimates the cost of invasive non-native species to Great Britain in unprecedented detail. Invasive non-native species can have wide-ranging effects on biodiversity, crop production and people’s livelihoods. A better understanding of the negative impacts of invasive species will help to make people aware of invasive non-native species, to prevent new introductions and to deal with the problems caused by established invasive species.

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