Phylogenetic structure of angiosperm trees in local forest communities along latitudinal and elevational gradients in eastern North America

doi:10.1111/ecog.04873

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	Phylogenetic structure of angiosperm trees in local forest communities along latitudinal and elevational gradients in eastern North America
	Qian,Hong; Zhang,Jian; Sandel,Brody; Jin,Yi
	2020
发表期刊	ECOGRAPHY
ISSN	0906-7590
卷号	43 期号:3 页码:419-430
摘要	Latitudinal and elevational gradients both represent thermal gradients. Assessing the consistency of the relationships between phylogenetic structure and climate between latitudinal and elevational gradients can provide insight into the mechanisms driving assembly of species from regional pools into local assemblages. The aim of this study is to compare patterns of phylogenetic structure measures for angiosperm tree species between latitudinal and elevational gradients, using a dataset of angiosperm tree species in 14 092 forest plots in eastern North America. We assessed whether these two gradients produce similar relationships between climate and phylogenetic structure, hypothesizing that they should differ in magnitude but not direction. We used correlation and regression analyses to assess the relation of measures of phylogenetic structure to elevation, latitude and climatic variables, which included minimum temperature, temperature seasonality, annual precipitation and precipitation seasonality. We found that 1) phylogenetic relatedness of angiosperm trees increases with decreasing temperature along both latitudinal and elevational gradients but the relationship between phylogenetic relatedness and temperature is steeper for elevational gradients than for latitudinal gradients; 2) the tip-weighted metric of phylogenetic relatedness (nearest taxon index) is more strongly correlated with climatic variables than the basal-weighted metric of phylogenetic relatedness (net relatedness index); 3) winter cold temperature exerts a stronger effect on community assembly of angiosperm trees than does temperature seasonality. These results suggest that winter cold temperature, rather than temperature seasonality, drives phylogenetic structure of plants in local forest communities, and that species distributions along elevational gradients are more in equilibrium with temperature, compared with those along latitudinal gradients.
DOI	10.1111/ecog.04873
收录类别	SCI
WOS记录号	WOS:000501599700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/71083
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,Zhang,Jian,Sandel,Brody,et al. Phylogenetic structure of angiosperm trees in local forest communities along latitudinal and elevational gradients in eastern North America[J]. ECOGRAPHY,2020,43(3):419-430.
APA	Qian,Hong,Zhang,Jian,Sandel,Brody,&Jin,Yi.(2020).Phylogenetic structure of angiosperm trees in local forest communities along latitudinal and elevational gradients in eastern North America.ECOGRAPHY,43(3),419-430.
MLA	Qian,Hong,et al."Phylogenetic structure of angiosperm trees in local forest communities along latitudinal and elevational gradients in eastern North America".ECOGRAPHY 43.3(2020):419-430.

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