Invasive species

Science

Definition

Non-native organisms introduced to an ecosystem where they lack natural predators or competitors, allowing them to spread rapidly and cause ecological or economic harm. Invasive species are a leading cause of biodiversity loss worldwide.

Examples

  • Zebra mussels clogging water intake pipes in the Great Lakes
  • Kudzu vine smothering native plants across the southeastern United States
  • Cane toads in Australia poisoning native predators that try to eat them

Related Terms

Biodiversity Community ecology Ecosystem services Island biogeography

Study This Concept

Practice invasive species with free review games in these units:

AP Environmental Science Unit 9: Global Change