More than half of all tree species exist only in a single country.
According to the study, nearly 58 percent of all tree species are single-country endemics, meaning they only occur naturally within the borders of a single country. The highest totals for endemic tree species are found in Brazil, Colombia, and Indonesia, which makes sense given the overall biodiversity found in their native forests. The study's authors write, "The countries with the most country-endemic tree species reflect broader plant diversity trends (Brazil, Australia, China) or islands where isolation has resulted in speciation (Madagascar, Papua New Guinea, Indonesia)."
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