气候变化领域集成服务门户(CCPortal): Evolutionary dynamics of the elevational diversity gradient in passerine birds

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DOI	10.1038/s41559-021-01515-y
	Evolutionary dynamics of the elevational diversity gradient in passerine birds
	van Els P.; Herrera-Alsina L.; Pigot A.L.; Etienne R.S.
发表日期	2021
ISSN	2397-334X
起始页码	1259
结束页码	1265
卷号	5 期号:9
英文摘要	Low-elevation regions harbour the majority of the world’s species diversity compared to high-elevation areas. This global gradient suggests that lowland species have had more time to diversify, or that net diversification rates have been higher in the lowlands. However, highlands seem to be cradles of diversity as they contain many young endemics, suggesting that their rates of speciation are exceptionally fast. Here we use a phylogenetic diversification model that accounts for the dispersal of species between different elevations to examine the evolutionary dynamics of the elevational diversity gradient in passerine birds, a group that has radiated globally to occupy almost all elevations and latitudes. We find strong support for a model in which passerines diversify at the same rate in the highlands and the lowlands but in which the per-capita rate of dispersal from high to low elevations is more than twice as fast as that in the reverse direction. This suggests that while there is no consistent trend in diversification across elevations, part of the diversity generated by highland regions migrates into the lowlands, thus setting up the observed gradient in passerine diversity. We find that this process drives tropical regions but for temperate areas, the analysis could be hampered by their lower richness. Despite their lower diversity, highland regions are disproportionally important for maintaining diversity in the adjacent lowlands. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	animal; biodiversity; evolution; genetics; Passeriformes; phylogeny; Animals; Biodiversity; Biological Evolution; Passeriformes; Phylogeny
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256867
作者单位	Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, Netherlands; Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, United Kingdom; Sovon Dutch Centre for Field Ornithology, Nijmegen, Netherlands; School of Biological Sciences, University of Aberdeen, Aberdeen, United Kingdom
推荐引用方式 GB/T 7714	van Els P.,Herrera-Alsina L.,Pigot A.L.,et al. Evolutionary dynamics of the elevational diversity gradient in passerine birds[J],2021,5(9).
APA	van Els P.,Herrera-Alsina L.,Pigot A.L.,&Etienne R.S..(2021).Evolutionary dynamics of the elevational diversity gradient in passerine birds.Nature Ecology & Evolution,5(9).
MLA	van Els P.,et al."Evolutionary dynamics of the elevational diversity gradient in passerine birds".Nature Ecology & Evolution 5.9(2021).