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New insights into the formation of biodiversity hotspots of the Kenyan flora

文献类型：期刊论文

作者Zhang, Qiang5; Ye, Jian-Fei; Le, Chi-Toan; Njenga, Dennis Mwithukia5; Rabarijaona, Narindra Romer5; Omollo, Wyckliffe Omondi5; Lu, Li-Min; Liu, Bing; Chen, Zhi-Duan
刊名DIVERSITY AND DISTRIBUTIONS
出版日期2022
卷号28期号:12页码:2696-2711
关键词biodiversity hotspots latitudinal gradient nestedness phylogenetic structure phytogeographical regions turnover beta-diversity
ISSN号1366-9516
DOI10.1111/ddi.13624
文献子类Article
英文摘要Aim: This study aimed to investigate the distribution patterns of plant diversity in Kenya, how climatic fluctuations and orogeny shaped them, and the formation of its beta-diversity. Location: Kenya, East Africa. Taxon: Angiosperms. Methods: We quantified patterns of turnover and nestedness components of phylogenetic beta-diversity for angiosperm species among neighbouring sites using a well-resolved phylogenetic tree and extensive distribution records from public databases and other published sources. We applied clustering methods to delineate biota based on pairwise similarities among multiple sites and used a random assembly null model to assess the effects of species abundance distribution on phylogenetic beta-diversity. Results: The phylogenetic turnover of the Kenyan flora, intersecting with the biodiversity hotspots Eastern Afromontane, Coastal Forests of Eastern Africa, and Horn of Africa, shows a non-monotonic pattern along a latitudinal gradient that is strongly structured into volcanic and coastal areas. The other areas are mainly dominated by phylogenetic nestedness, even in the eastern part of the equatorial region parallel to the volcanic area. Phylogenetic diversity and phylogenetic structure analyses explain the mechanism of the observed phylogenetic turnover and nestedness patterns. We identified five phytogeographical regions in Kenya: the Mandera, Turkana, Volcanic, Pan Coastal and West Highland Regions. Conclusions: Variations in turnover gradient and coexistence are highly dependent on the regional biogeographical history resulting from climatic fluctuations and longlasting orogeny, which jointly shaped the biodiversity patterns of the Kenyan flora. The nestedness component dominated climatically unstable regions and is presumed to have been caused by heavy local species extinction and recolonization from Volcanic Region. The high turnover component in climatically stable regions may have preserved old lineages and the prevalence of endemic species within narrow ranges.
学科主题Biodiversity Conservation ; Ecology
出版地HOBOKEN
电子版国际标准刊号1472-4642
WOS关键词BETA-DIVERSITY ; R PACKAGE ; BIOGEOGRAPHICAL REGIONS ; EVOLUTIONARY HISTORY ; CENOZOIC VEGETATION ; GEOLOGICAL HISTORY ; PATTERNS ; ECOLOGY ; CLIMATE ; TREE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000844124100001
出版者WILEY
资助机构International Partnership Program of Chinese Academy of Sciences [151853KYSB20190027] ; Sino-Africa Joint Research Center, Chinese Academy of Sciences, CAS International Research and Education Development Program [SAJC202101] ; National Natural Science Foundation of China [31970212, 31800178] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences [2021077] ; Vietnam National Foundation for Science and Technology Development [2021077]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/28571]  
专题植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文
作者单位1.Univ Chinese Acad Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Bot, Beijing Bot Garden, Beijing, Peoples R China
3.Ha Noi Pedag Univ 2, Phuc Yen, Vietnam
4.Chinese Acad Sci, Sino Africa Joint Res Ctr, Wuhan, Peoples R China
5.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Qiang,Ye, Jian-Fei,Le, Chi-Toan,et al. New insights into the formation of biodiversity hotspots of the Kenyan flora[J]. DIVERSITY AND DISTRIBUTIONS,2022,28(12):2696-2711.
APA Zhang, Qiang.,Ye, Jian-Fei.,Le, Chi-Toan.,Njenga, Dennis Mwithukia.,Rabarijaona, Narindra Romer.,...&Chen, Zhi-Duan.(2022).New insights into the formation of biodiversity hotspots of the Kenyan flora.DIVERSITY AND DISTRIBUTIONS,28(12),2696-2711.
MLA Zhang, Qiang,et al."New insights into the formation of biodiversity hotspots of the Kenyan flora".DIVERSITY AND DISTRIBUTIONS 28.12(2022):2696-2711.

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来源：植物研究所

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