An invasive species is an exogenous species (a species that comes from outside of an ecosystem) introduced, by accident or intentionally, to an ecosystem. It may cause damage to the environment, economy or human health.
" invasive species ", may also refer to local species (native) that dominate an area by extensive colonization : very rapid growth and reproduction/multiplication.
Young grey squirrels, originally from North America, were introduced to England in the early 20th century. Since 1990, they have caused serious environmental problems in some European regions. © Luxboyer CC by-sa
Invasive species - 1 Photo