A phylogenetic and trait‐based analysis of community assembly in a subtropical forest in central China

特质 系统发育树 空间生态学 生态学 社区 生物 热带和亚热带湿润阔叶林 比例(比率) 亚热带 群落结构 空间分析 地理 统计 数学 生态系统 地图学 计算机科学 生物化学 基因 程序设计语言
作者
Jiaxin Zhang,Nathan G. Swenson,Jianming Liu,Mengting Liu,Xiujuan Qiao,Mingxi Jiang
出处
期刊:Ecology and Evolution [Wiley]
卷期号:10 (15): 8091-8104 被引量:19
标识
DOI:10.1002/ece3.6465
摘要

Abstract Despite several decades of study in community ecology, the relative importance of the ecological processes that determine species co‐occurrence across spatial scales remains uncertain. Some of this uncertainty may be reduced by studying the scale dependency of community assembly in the light of environmental variation. Phylogenetic information and functional trait information are often used to provide potentially valuable insights into the drivers of community assembly. Here, we combined phylogenetic and trait‐based tests to gain insights into community processes at four spatial scales in a large stem‐mapped subtropical forest dynamics plot in central China. We found that all of the six leaf economic traits measured in this study had weak, but significant, phylogenetic signal. Nonrandom phylogenetic and trait‐based patterns associated with topographic variables indicate that deterministic processes tend to dominate community assembly in this plot. Specifically, we found that, on average, co‐occurring species were more phylogenetically and functionally similar than expected throughout the plot at most spatial scales and assemblages of less similar than expected species could only be found on finer spatial scales. In sum, our results suggest that the trait‐based effects on community assembly change with spatial scale in a predictable manner and the association of these patterns with topographic variables, indicates the importance of deterministic processes in community assembly relatively to random processes.
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