文献类型：期刊文献

英文题名：The effect of environmental and phylogenetic drivers on community assembly in an alpine meadow community

作者：Yang, Zhongling[1,2];Powell, Jeff R.[3];Zhang, Chunhui[1];Du, Guozhen[1]

第一作者：杨中领;Yang, Zhongling

通讯作者：Du, GZ[1]

机构：[1]Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China;[2]Xinxiang Univ, Life Sci Coll, Xinxiang 453003, Peoples R China;[3]Univ Western Sydney, Hawkesbury Inst Environm, Richmond, NSW 2753, Australia

第一机构：Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China

通讯机构：[1]corresponding author), Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China.

年份：2012

卷号：93

期号：11

起止页码：2321-2328

外文期刊名：ECOLOGY

收录：;Scopus(收录号：2-s2.0-84869166436);WOS:【SCI-EXPANDED(收录号:WOS:000310834900003)】；

基金：Zhongling Yang and Jeff R. Powell contributed to this paper equally. We thank Hui Guo, Shujun Wen, Xin Chen, Peng Jia, Wei Li, Liujie Wang, Xiao Yang, Wenxiang Hu, Junyong Li, and many others at the Maqu Rangeland Workgroup for assistance in both the field and lab. We also thank Valerio Pillar and an anonymous reviewer for helpful comments on an earlier version of the manuscript. This project was supported by Key Program of National Natural Science Foundation of China (Grant No: 40930533).

语种：英文

外文关键词：alpine meadow; environmental filtering; evolutionary history; fertilization; functional redundancy; grazing; limiting similarity; niche conservatism; phylogenetic signal; Tibetan Plateau; trait conservatism; trait convergence

摘要：To predict the consequences of environmental change on plant communities at local scales, one needs to understand the regional drivers structuring these communities. Here, we used a formal analytical framework incorporating functional traits and evolutionary histories to understand the importance of environmental filtering and species interactions in the assembly of alpine plant communities. The study was conducted in the Tibetan Plateau using field plots experiencing changes in land use (fertilization and grazing). We observed evidence for both trait-based convergence (associated with plant height and tissue nitrogen) and divergence (associated with specific leaf area) within alpine plant communities, suggesting that environmental filtering and limiting similarity are acting simultaneously during assembly processes. Although we did not observe evidence of phylogenetic niche conservatism in relation to intensified land use, we did observe support for the phylogenetic structure of plant communities influencing community-weighted mean trait values, suggesting that evolutionary constraints represent a significant driver of community assembly in this system. Therefore, evolutionary and ecological processes may have independent effects on alpine plant communities facing land use intensification.