On this view of migration, with subsequent modification, we see why oceanic islands are inhabited by only few species, but of these, why many are peculiar or endemic forms.
Migrazio eta ondorengo eraldaketaren teoria honen bidez ulertzen dugu zergatik bizi diren espezie gutxi irla ozeanikoetan eta hauetarik asko zergatik forma bereziak edo endemikoak diren.