Ancient orogenic and monsoon-driven assembly of the world's richest temperate alpine flora.

Ding, Wen-Na; Ree, Richard H.; Spicer, Robert A. and Xing, Yao-Wu (2020). Ancient orogenic and monsoon-driven assembly of the world's richest temperate alpine flora. Science, 369(6503) pp. 578–581.

DOI: https://doi.org/10.1126/science.abb4484

Abstract

Understanding how alpine biotas formed in response to historical environmental change may improve our ability to predict and mitigate the threats to alpine species posed by global warming. In the world's richest temperate alpine flora, that of the Tibet-Himalaya-Hengduan region, phylogenetic reconstructions of biome and geographic range evolution show that extant lineages emerged by the early Oligocene and diversified first in the Hengduan Mountains. By the early to middle Miocene, accelerated diversification and colonization of adjacent regions were likely driven jointly by mountain building and intensification of the Asian monsoon. The alpine flora of the Hengduan Mountains has continuously existed far longer than any other alpine flora on Earth and illustrates how modern biotas have been shaped by past geological and climatic events. [Abstract copyright: Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.]

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