There Are About 73,000 Tree Species on Earth, New Study Shows biology science
Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates of tree diversity at large geographic domains still rely heavily on published lists of species descriptions that are geographically uneven in coverage. Based on global ground-sourced data, a multinational team of scientists has estimated the total tree species richness at global, continental, and biome levels.
“These results highlight the vulnerability of global forest biodiversity to anthropogenic changes, particularly land use and climate, because the survival of rare taxa is disproportionately threatened by these pressures,” added Dr. Peter Reich, a forest ecologist with the Institute for Global Change Biology and School for Environment and Sustainability at the University of Michigan, the Department of Forest Resources at the University of Minnesota, St.
The combined databases yielded a total of 64,100 documented tree species worldwide, a total similar to a previous study that found about 60,000 tree species on the planet. Roughly 40% of the undiscovered tree species — more than on any other continent — are likely to be in South America, which is mentioned repeatedly in the study as being of special significance for global tree diversity.
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