气候变化领域集成服务门户(CCPortal): The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales

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DOI	10.1073/pnas.2021132118
	The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales
	Neves D.M.; Kerkhoff A.J.; Echeverría-Londoño S.; Merow C.; Morueta-Holme N.; Peet R.K.; Sandel B.; Svenning J.-C.; Wiser S.K.; Enquist B.J.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:37
英文摘要	The tropical conservatism hypothesis (TCH) posits that the latitudinal gradient in biological diversity arises because most extant clades of animals and plants originated when tropical environments were more widespread and because the colonization of colder and more seasonal temperate environments is limited by the phylogenetically conserved environmental tolerances of these tropical clades. Recent studies have claimed support of the TCH, indicating that temperate plant diversity stems from a fewmore recently derived lineages that are nested within tropical clades, with the colonization of the temperate zone being associated with key adaptations to survive colder temperatures and regular freezing. Drought, however, is an additional physiological stress that could shape diversity gradients. Here, we evaluate patterns of evolutionary diversity in plant assemblages spanning the full extent of climatic gradients in North and South America. We find that in both hemispheres, extratropical dry biomes house the lowest evolutionary diversity, while tropical moist forests and many temperatemixed forests harbor the highest. Together, our results support a more nuanced view of the TCH, with environments that are radically different from the ancestral niche of angiosperms having limited, phylogenetically clustered diversity relative to environments that show lower levels of deviation from this niche. Thus, we argue that ongoing expansion of arid environments is likely to entail higher loss of evolutionary diversity not just in the wet tropics but in many extratropical moist regions as well. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Angiosperms; Drought; Evolutionary diversity; Latitudinal diversity gradient; Phylogenetic clustering
语种	英语
scopus关键词	angiosperm; article; desert; drought; forest; nonhuman; South America; tropics
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238645
作者单位	Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Brazil; Department of Biology, Kenyon College, Gambier, OH 43022, United States; MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College LondonW2 1PG, United Kingdom; Eversource Energy Center, Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06268, United States; Center for Macroecology, Evolution and Climate, GLOBE Institute, University of Copenhagen, Copenhagen, 2100, Denmark; Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States; Department of Biology, Santa Clara University, Santa Clara, CA 95053, United States; Center for Biodiversity Dynamics in a Changing World, Department of Biology, Aarhus University, Aarhus, 8000, Denmark; Ecosystems and Conservation Group, Manaaki Whenua - Landcare Research, Lincoln, 7640, New Zealand; Department of Ecology and Evolutionary Biology, Univer...
推荐引用方式 GB/T 7714	Neves D.M.,Kerkhoff A.J.,Echeverría-Londoño S.,et al. The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales[J],2021,118(37).
APA	Neves D.M..,Kerkhoff A.J..,Echeverría-Londoño S..,Merow C..,Morueta-Holme N..,...&Enquist B.J..(2021).The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales.Proceedings of the National Academy of Sciences of the United States of America,118(37).
MLA	Neves D.M.,et al."The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales".Proceedings of the National Academy of Sciences of the United States of America 118.37(2021).