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Why are mountain forests in Mexico and Central America hotspots for oak trees? Study shows most definitive answer yet

phys.org·The Morton Arboretum·27 days ago
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Island oak (Quercus tomentella) (endangered) in Guadalupe Island, Mexico. Credit: J.A. Soriano The mountains of Mexico and Central America harbor some of the greatest biodiversity of oak trees worldwide, and a landmark study conducted by The Morton Arboretum with U.S. and Mexican collaborators provides the most definitive answer to date as to why. A team of researchers led by University of Chicago Ph.D. candidate Kieran Althaus, an affiliate of the Arboretum's Science and Conservation Department, uncovered the conditions that enabled oaks to rapidly diversify in the Americas. The findings have advanced scientific understanding of the origins of one of the world's biodiversity hotspots, forming a unique case study for evolution at a global scale.…

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