Taxonomic and phylogenetic β-diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa

doi:10.1111/jbi.14968

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	Taxonomic and phylogenetic β-diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa
	Qian, Hong; Jin, Yi; Deng, Tao
	2024
发表期刊	JOURNAL OF BIOGEOGRAPHY
ISSN	0305-0270
卷号	51 期号:10 页码:2023-2033
摘要	AimBeta-diversity quantifies the change in taxonomic and phylogenetic composition between areas, and is a scalar between local (alpha) and regional (gamma) diversity. Geographic distance, which reflects dispersal limitation, and climatic distance, which reflects environmental filtering, are major drivers of beta-diversity. Here, we analyse a comprehensive data set of angiosperms in regional floras across Africa to assess the relationships of beta-diversity, and its components, to three major types of environmental variables (current climate, Quaternary climate change and topographic heterogeneity) thought to drive beta-diversity.LocationAfrica.TaxonAngiosperms.MethodsAfrica was divided into 27 regions. Species lists of angiosperms for each region were collated. The relationships of both taxonomic and phylogenetic beta-diversity, and their respective turnover and nestedness components, with geographic and environmental distances were assessed.ResultsThis study showed that (1) regions of the lowest beta-diversity are located in moist tropical climates, (2) the turnover and nestedness components of beta-diversity are negatively correlated with each other, (3) taxonomic beta-diversity is higher than phylogenetic beta-diversity across Africa, (4) variation in beta-diversity of angiosperms is more strongly associated with current climate than with Quaternary climate change and topographic heterogeneity and (5) the variation in taxonomic beta-diversity and its turnover component that is independently explained by geographic distance is much larger than that is independently explained by climatic distance for angiosperms in Africa.Main ConclusionsThe finding that geographic distance explained more variation than climatic distance suggests that dispersal limitation plays a greater role than environmental filtering in shaping angiosperm beta-diversity in Africa. Of climatic factors, current climate plays a more important role than Quaternary climate change in shaping angiosperm beta-diversity in Africa.
DOI	10.1111/jbi.14968
WOS记录号	WOS:001237725300001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/76364
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Qian, Hong,Jin, Yi,Deng, Tao. Taxonomic and phylogenetic β-diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa[J]. JOURNAL OF BIOGEOGRAPHY,2024,51(10):2023-2033.
APA	Qian, Hong,Jin, Yi,&Deng, Tao.(2024).Taxonomic and phylogenetic β-diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa.JOURNAL OF BIOGEOGRAPHY,51(10),2023-2033.
MLA	Qian, Hong,et al."Taxonomic and phylogenetic β-diversity of regional assemblages of angiosperm species in relation to geographic and climatic determinants in Africa".JOURNAL OF BIOGEOGRAPHY 51.10(2024):2023-2033.

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