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题名: Phylogenetic clustering and overdispersion for alpine plants along elevational gradient in the Hengduan Mountains Region, southwest China
作者: Li, Xin-Hui1, 2; Zhu, Xin-Xin1, 2; Niu, Yang1; Sun Hang(孙航)1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: alpine plants ; environment filtering ; Hengduan Mountains Region ; interspecific competition ; phylogenetic structure
英文摘要: To better understand the elevational pattern of phylogenetic structure shown by alpine taxa and the underlying causes, we analyzed the phylogenetic structure of each elevational belt of alpine plants in the Hengduan Mountains Region, measured by net related index (NRI) and net nearest taxon index (NTI). We found both the indices of phylogenetic diversity indicated that alpine plants tended to show phylogenetic overdispersion at low elevational belts, implying that the distribution of alpine plants in these belts was mainly determined by interspecific competition. Alpine plants at higher elevational belts tended to phylogenetic clustering indicated by NRI, and NTI revealed phylogenetic clustering at the belts between 4300m and 5500m, which presumably suggested environment filtering and rapid speciation. Above 5500m, NTI indicated that the phylogenetic structure became random again, perhaps due to the low intensity of filtering and the large distances between plants at the top of the scree slopes. We concluded that phylogenetic structure was, indeed, influenced by the environmental filter, interspecies interaction, rapid speciation during the uplift of the Qinghai-Tibet Plateau, and distance between plants.
出版日期: 2014-05-01
卷号: 52, 期号:3, 页码:280-288
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18135
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Li,Xin-Hui;Zhu,Xin-Xin;Niu,Yang;Sun,Hang.Phylogenetic clustering and overdispersion for alpine plants along elevational gradient in the Hengduan Mountains Region, southwest China,JOURNAL OF SYSTEMATICS AND EVOLUTION,2014,52(3):280-288
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