By immigration, we mean going to a different country
for a permanent residence. By emigration, we mean the act of leaving one
country to live or settle in another. By such definitions, we can say that
immigration and emigration were not a factor in the population growth of golden
toad because they never immigrate nor emigrate. Since the time (1964) they were
discovered until they became extinct from 1989 due to climate change, the
golden toads had lived in the forest of Costa Rica.
