Geographic patterns and climatic correlates of deep evolutionary legacies for angiosperm assemblages in China  

作　　者：Hong Qian Tao Deng 

机构地区：[1]Research and Collections Center,Ilinois State Museum,1011 East Ash Street,Springfield,IL 62703,USA [2]CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China

出　　处：《Journal of Systematics and Evolution》2023年第4期563-571,共9页植物分类学报（英文版）

基　　金：supported by the Key Projects of the Joint Fund of the National Natural Science Foundation of China(U1802232);the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0502);the Youth Innovation Promotion Association of Chinese Academy of Sciences(2019382);the Yunnan Young&Elite Talents Project(YNWRQNBJ-2019-033).

摘　　要：Deep evolutionary histories can play an important role in assembling species into communities,but few studies have explored the effects of deep evolutionary histories on species assembly of angiosperms(flowering plants).Here we explore patterns of family divergence and diversification times(stem and crown ages,respectively)and phylogenetic fuses for angiosperm assemblages in 100×100 km grid cells across geographic and ecological gradients in China.We found that both family stem and crown ages of angiosperm assemblages are older in southeastern China with warm and humid climates than in northwestern China with cold and dry climates;these patterns are stronger for family stem ages than for family crown ages;families in colder and drier climates are more closely related across the family-level angiosperm phylogeny;and family phylogenetic fuses are,on average,longer for angiosperm assemblages in warm and humid climates than in cold and dry climate.We conclude that the fact that deep evolutionary histories,which were measured as family stem and crown ages and family phylogenetic fuses in this study,have shown strong geographic and ecological patterns suggests that deep evolutionary histories of angiosperms have profound effects on assembling angiosperm species into ecological communities.

关 键 词：Chinese flora deep evolutionary history environmental gradient flowering plants mean family age phylogenetic fuse 

分 类 号：Q948[生物学—植物学]