气候变化领域集成服务门户(CCPortal): Angiosperm speciation cools down in the tropics

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DOI	10.1111/ele.13476
	Angiosperm speciation cools down in the tropics
	Igea J.; Tanentzap A.J.
发表日期	2020
ISSN	1461023X
英文摘要	Recent evidence has questioned whether the Latitudinal Diversity Gradient (LDG), whereby species richness increases towards the Equator, results in higher rates of speciation in the tropics. Allowing for time heterogeneity in speciation rate estimates for over 60,000 angiosperm species, we found that the LDG does not arise from variation in speciation rates because lineages do not speciate faster in the tropics. These results were consistently retrieved using two other methods to test the association between occupancy of tropical habitats and speciation rates. Our speciation rate estimates were robust to the effects of both undescribed species and missing taxa. Overall, our results show that speciation rates follow an opposite pattern to global variation in species richness. Greater ecological opportunity in the temperate zones, stemming from less saturated communities, higher species turnover or greater environmental change, may ultimately explain these results. © 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd
英文关键词	angiosperms; biodiversity; biogeography; latitudinal diversity gradient; macroevolution; speciation
语种	英语
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120956
作者单位	Department of Plant Sciences, University of Cambridge, Downing St, Cambridge, CB2 3EA, United Kingdom
推荐引用方式 GB/T 7714	Igea J.,Tanentzap A.J.. Angiosperm speciation cools down in the tropics[J],2020.
APA	Igea J.,&Tanentzap A.J..(2020).Angiosperm speciation cools down in the tropics.Ecology Letters.
MLA	Igea J.,et al."Angiosperm speciation cools down in the tropics".Ecology Letters (2020).