Evolutionary assembly of the Arctic flora

doi:10.1111/geb.13434

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	Evolutionary assembly of the Arctic flora
	Qian,Hong ; Deng,Tao; Ricklefs,Robert E.
	2022
发表期刊	GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN	1466-822X
卷号	31 期号:3 页码:396-404
摘要	Aim The Arctic is the coldest inhabited region on Earth, and it supports few terrestrial species. The tropical-climate origin of many angiosperm clades, along with strong phylogenetic niche conservatism, likely constrained colonization of cold environments for many plants. However, invasion of the Arctic by many lineages might also have opened up a new adaptive landscape that facilitated subsequent diversification. We might, therefore, expect species in this biome to be descendants of a few cold-tolerant lineages. Here, we explore the assembly of the Arctic flora using data on the relationships and distributions of > 80,000 species. Location The Northern Hemisphere. Time period Current. Taxon Flowering plants. Methods The Arctic was divided into five bioclimate subzones. We assembled a species pool for flowering plants in the Northern Hemisphere, and determined which species of the species pool are distributed in the Arctic and each of its subzones. We used two metrics (the standardized effect sizes of mean pairwise distance and Faith's phylogenetic diversity; MPDses and PDses, respectively) to quantify phylogenetic dispersion of flowering plant assemblages. Results When the Arctic species were compared to all the species in the Northern Hemisphere, MPDses and PDses were -12.85 and -27.17, respectively, indicating that the Arctic flora is a phylogenetically clustered subset of the Northern Hemisphere species pool. In general, MPDses and PDses decreased from the south to the north within the Arctic, indicating that some lineages are further filtered stepwise into more northerly Arctic subzones. Main conclusions The species of the Arctic flora comprise a phylogenetically clustered subset of the broader Northern Hemisphere flora. The more negative value for PDses compared to MPDses indicates that clustering is stronger towards the tips of the phylogenetic tree. We suggest that the majority of Arctic species are nested within clades having attributes that enabled adaptation to cold climates.
关键词	cold tolerance community assembly environmental filtering flowering plants niche conservatism phylogenetic structure SPECIES RICHNESS DIVERSITY ECOLOGY ORIGIN DIVERSIFICATION CONSERVATISM BIOGEOGRAPHY PATTERNS HISTORY
DOI	10.1111/geb.13434
WOS记录号	WOS:000722309300001
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73724
专题	中国科学院昆明植物研究所
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Illinois State Museum, Res & Collect Ctr, 1011 East Ash St, Springfield, IL 62703 USA 3.Ricklefs, Robert E.] Univ Missouri St Louis, Dept Biol, St Louis, MO USA
推荐引用方式 GB/T 7714	Qian,Hong,Deng,Tao,Ricklefs,Robert E.. Evolutionary assembly of the Arctic flora[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2022,31(3):396-404.
APA	Qian,Hong,Deng,Tao,&Ricklefs,Robert E..(2022).Evolutionary assembly of the Arctic flora.GLOBAL ECOLOGY AND BIOGEOGRAPHY,31(3),396-404.
MLA	Qian,Hong,et al."Evolutionary assembly of the Arctic flora".GLOBAL ECOLOGY AND BIOGEOGRAPHY 31.3(2022):396-404.

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