Arid
DOI10.1111/geb.12481
Evolutionary radiations of Proteaceae are triggered by the interaction between traits and climates in open habitats
Onstein, Renske E.1,2; Jordan, Gregory J.3; Sauquet, Herve2; Weston, Peter H.4; Bouchenak-Khelladi, Yanis1; Carpenter, Raymond J.3,5; Linder, H. Peter1
通讯作者Onstein, Renske E.
来源期刊GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN1466-822X
EISSN1466-8238
出版年2016
卷号25期号:10页码:1239-1251
英文摘要

AimEcologically driven diversification can create spectacular diversity in both species numbers and form. However, the prediction that the match between intrinsic (e.g. functional trait) and extrinsic (e.g. climatic niche) variables may lead to evolutionary radiation has not been critically tested. Here, we test this hypothesis in the Southern Hemisphere plant family Proteaceae, which shows a spectacular diversity in open mediterranean shrublands in the Southwest Australian Floristic Region (SWAFR) and the Cape Floristic Region (CFR). Species in the Proteaceae family occupy habitats ranging from tropical rain forests to deserts and are remarkably variable in leaf morphology.


LocationSouthern Hemisphere.


MethodsWe built a phylogenetic tree for 337 Proteaceae species (21% of the total), representing all main clades, climatic tolerances and morphologies, and collected leaf functional traits (leaf area, sclerophylly, leaf shape) for 261 species and climatic niche data for 1645 species. Phylogenetic generalized least squares regression and quantitative-trait evolutionary model testing were used to investigate the evolutionary pathways of traits and climatic niches, and their effect on diversification rates.


ResultsWe found that divergent selection may have caused lineages in open vegetation types to evolve towards trait and climatic niche optima distinct from those in closed forests. Furthermore, we show that the interaction between open habitats, dry, warm and/or mediterranean climates, and small, sclerophyllous, toothed leaves increases net diversification rates in Proteaceae.


Main conclusionsOur results suggest that the evolution of specific leaf adaptations may have allowed Proteaceae to adapt to variable climatic niches and diversify extensively in open ecosystems such as those in the CFR and SWAFR. This match between morphology and environment may therefore more generally lead to evolutionary radiation.


英文关键词Adaptation climatic niche evolutionary radiation functional trait leaf shape mediterranean-type ecosystem sclerophylly
类型Article
语种英语
国家Switzerland ; France ; Australia
收录类别SCI-E
WOS记录号WOS:000383677800009
WOS关键词CAPE FLORISTIC REGION ; SOUTH-AFRICA ; SPECIES DIVERSIFICATION ; MEDITERRANEAN-CLIMATE ; PLANT DIVERSIFICATION ; STABILIZING SELECTION ; ADAPTIVE EVOLUTION ; FUNCTIONAL TRAITS ; NICHE EVOLUTION ; LEAF SIZE
WOS类目Ecology ; Geography, Physical
WOS研究方向Environmental Sciences & Ecology ; Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193330
作者单位1.Univ Zurich, Inst Systemat Bot, Zollikerstr 107, CH-8008 Zurich, Switzerland;
2.Univ Paris 11, ESE, CNRS, UMR 8079, Batiment 360, F-91405 Orsay, France;
3.Univ Tasmania, Sch Biol Sci, Private Bag 55, Hobart, Tas 7001, Australia;
4.Natl Herbarium New South Wales, Mrs Macquaries Rd, Sydney, NSW 2002, Australia;
5.Univ Adelaide, Sch Biol Sci, Adelaide, SA 5005, Australia
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GB/T 7714
Onstein, Renske E.,Jordan, Gregory J.,Sauquet, Herve,et al. Evolutionary radiations of Proteaceae are triggered by the interaction between traits and climates in open habitats[J],2016,25(10):1239-1251.
APA Onstein, Renske E..,Jordan, Gregory J..,Sauquet, Herve.,Weston, Peter H..,Bouchenak-Khelladi, Yanis.,...&Linder, H. Peter.(2016).Evolutionary radiations of Proteaceae are triggered by the interaction between traits and climates in open habitats.GLOBAL ECOLOGY AND BIOGEOGRAPHY,25(10),1239-1251.
MLA Onstein, Renske E.,et al."Evolutionary radiations of Proteaceae are triggered by the interaction between traits and climates in open habitats".GLOBAL ECOLOGY AND BIOGEOGRAPHY 25.10(2016):1239-1251.
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