As of 2021, there were nearly 23,631 tree species in the Neotropics, the region covering Central and South America. The Neartic and Oceania had the least number of tree species globally. Trees are found in all ecosystems across the world except for the extreme polar regions.
Number of tree species worldwide as of 2021, by biogeographic realm
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BGCI. (September 1, 2021). Number of tree species worldwide as of 2021, by biogeographic realm [Graph]. In Statista. Retrieved December 18, 2024, from https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/
BGCI. "Number of tree species worldwide as of 2021, by biogeographic realm." Chart. September 1, 2021. Statista. Accessed December 18, 2024. https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/
BGCI. (2021). Number of tree species worldwide as of 2021, by biogeographic realm. Statista. Statista Inc.. Accessed: December 18, 2024. https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/
BGCI. "Number of Tree Species Worldwide as of 2021, by Biogeographic Realm." Statista, Statista Inc., 1 Sep 2021, https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/
BGCI, Number of tree species worldwide as of 2021, by biogeographic realm Statista, https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/ (last visited December 18, 2024)
Number of tree species worldwide as of 2021, by biogeographic realm [Graph], BGCI, September 1, 2021. [Online]. Available: https://www.statista.com/statistics/1261841/species-richness-trees-worldwide-by-biogeographic-realm/