Scale dependence in the phylogenetic relatedness of alien and native taxa
Scale dependence in the phylogenetic relatedness of alien and native taxa作者机构：School of Biological SciencesFaculty of ScienceMonash UniversityMelbourne 3800Australia Manaaki Whenua-Landcare Research231 Morrin RdSt.JohnsAuckland 1072New Zealand Greening Australia LtdPO Box 470Flinders LaneMelbourne 8009Australia
出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)
年 卷 期：2020年第13卷第5期
页 面：601-610页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学]
主 题：alien species community phylogenetics Darwin’s naturalization hypothesis spatial scale phylogenetic beta diversity
摘 要：Aims Darwin’s naturalization hypothesis proposes that successfully established alien species are less closely related to native species due to differences in their ecological *** have provided support both for and against this *** reason for this is the tendency for phylogenetic clustering between aliens and natives at broad spatial scales with overdispersion at fine ***,little is known about how the phylogenetic relatedness of alien species alters the phylogenetic structure of the communities they invade,and at which spatial scales effects may ***,we examine if invaded understorey plant communities,*** both native and alien taxa,are phylogenetically clustered or overdispersed,how relatedness changes with spatial scale and how aliens affect phylogenetic patterns in understorey *** Field surveys were conducted in dry forest understorey communities in south-east Australia at five spatial scales(1,20,500,1500 and 4500 m2).Standardized effect sizes of two metrics were used to quantify phylogenetic relatedness between communities and their alien and native subcommunities,and to examine how phylogenetic patterns change with spatial scale:(i)mean pairwise distance and(ii)mean nearest taxon distance(MNTD).Important Findings Aliens were closely related to each other,and this relatedness tended to increase with *** species and the full community exhibited either no clear pattern of relatedness with increasing spatial scale or were no different from *** intermediate spatial scales(20-500 m2),the whole community tended towards random whereas the natives were strongly overdispersed and the alien subcommunity strongly *** suggests that invasion by closely related aliens shifts community phylogenetic structure from overdispersed towards *** and natives were distantly related across spatial scales,supporting Darwin’s naturalization hypothesis,but only when phylogenetic distance
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