endemism

/ɛnˈdɛmɪzəm/
noun
  1. The state or quality of being native or restricted to a particular geographic area, especially in biology.
    • The high level of endemism on the island means many species are found nowhere else on Earth.
    • Conservationists are concerned about the loss of endemism in the Amazon rainforest due to deforestation.
    • Endemism in the Galápagos Islands inspired Charles Darwin's theory of evolution.
Synonyms
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