It has longed been feared that the introduction of invasive species leads to the extinction of native species. In fact some scientists believe that biological invasions are among the two or three forces driving species into extinction. However, in a new study, ecologist and biologists are report that some invasions are not detrimental, and often do not bring about extinctions. They observed that in New Zealand in fact invasive species can even advance the evolution of new diversity. Invasive species may push native species out of their original habitat. However, these species do not become extinct, rather they move to habitats that the invasive specie does not fare well in, and thus survive.
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