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Guidelines for invasive species planning and management on islands

Invasive species’ (often called pests, weeds and diseases) are plants, animals, disease agents and other organisms taken beyond their natural range by people, deliberately or unintentionally, and which become destructive to the environment or human livelihoods. Islands are particularly vulnerable to invasive species, owing to the evolution of their native animals and plants in isolation from predators and diseases, and the dependence of island peoples on imports, travel and tourism, which lead to high rates of arrival of new pests.