Precipitation is the main axis of tropical plant phylogenetic turnover across space and time

作者：Jens J. Ringelberg, Erik J. M. Koenen, Benjamin Sauter, Anahita Aebli, Juliana Gastaldello Rando, João Ricardo Vieira Iganci, Luciano Paganucci de Queiroz, Daniel J. Murphy, Myriam Gaudeul, Anne Bruneau, Melissa Luckow, Gwilym P. Lewis, Joseph T. Miller, Marcelo Fragomeni Simon, Lucas Sá Barreto Jordão, Matías Morales, C. Donovan Bailey, Madhugiri Nageswara‐Rao, James A. Nicholls, Oriane Loiseau, R. Toby Pennington, Kyle G. Dexter, Niklaus E. Zimmermann, Colin E. Hughes · 发表于：Science Advances · 年份：2023 · DOI：10.1126/sciadv.ade4954 · 被引用次数：80 · 研究领域：Plant and animal studies、Plant Diversity and Evolution、Ecology and Vegetation Dynamics Studies

Early natural historians-Comte de Buffon, von Humboldt, and De Candolle-established environment and geography as two principal axes determining the distribution of groups of organisms, laying the foundations for biogeography over the subsequent 200 years, yet the relative importance of these two axes remains unresolved. Leveraging phylogenomic and global species distribution data for Mimosoid legumes, a pantropical plant clade of c. 3500 species, we show that the water availability gradient from deserts to rain forests dictates turnover of lineages within continents across the tropics. We demonstrate that 95% of speciation occurs within a precipitation niche, showing profound phylogenetic niche conservatism, and that lineage turnover boundaries coincide with isohyets of precipitation. We reveal similar patterns on different continents, implying that evolution and dispersal follow universal processes.