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16/03/2018
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InvasivealienspeciesandtheSDGs
RossShackleton (Unil)
Whatareinvasivealienspecies
Negativeandpositiveeffectsforpeopleandtheenvironment
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Casestudy1:NileperchinLakeVictoria
Primarily costs Costsandbenefits Primarily benefits
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Casestudy2:InvasiveagroforestryandforestrytreesinSouthAfrica
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Prosopis covers10mha(potential ofupto30-50mha)ofSouthAfrica– Currentlymorethan double thesizeofSwitzerland
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Primarily costs Benefits andCosts Primarilybenefits
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Casestudy3:Parthenium (famineweed)inAfricaandAsia
Primarily costs Costsandbenefits Primarily benefits
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Complexity
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Futureneeds/solutions
• Biosecurity
• Riskassessments
• Integratedcontrol,considering theroleofbothbenefitsandcosts• Utilization• Ecosystemrestoration – WorkingforWater(amodel???)
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Riskassessment
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WorkingforWater(WFW)
