The economic costs of biological invasions in Africa: a growing but neglected threat?
2021
Diagne, Christophe | Turbelin, Anna, | Moodley, Desika | Novoa, Ana | Leroy, Boris | Angulo, Elena | Adamjy, Tasnime | Dia, Cheikh, | Taheri, Ahmed | Tambo, Justice | Dobigny, Gauthier | Courchamp, Franck
Biological invasions can dramatically impact natural ecosystems and human societies. However, although knowledge of the economic impacts of biological invasions provides crucial insights for efficient management and policy, reliable syntheses are still lacking. This is particularly true for low income countries where economic resources are insufficient to control the effects of invasions. In this study, we relied on the recently developed "InvaCost" database-the most comprehensive repository on the monetised impacts of invasive alien species worldwide-to produce the first synthesis of economic costs of biological invasions on the African continent. We found that the reported costs of invasions ranged between US$ 18.2 billion and US$ 78.9 billion between 1970 and 2020. This represents a massive, yet highly underes-* These authors contributed equally (as lead authors). ** These authors contributed equally (as co-authors).
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