Data from: Examining differences in phylogenetic composition enhances understanding of the phylogenetic structure of the shrub community in the northeastern Qinghai-Tibetan Plateau
Data files
May 08, 2021 version files 241.15 KB
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Table_S1.xls
241.15 KB
Abstract
Methods
We surveyed 20 sampling sites from the desert habitat and 41 from the alpine habitat with little or no disturbance (total = 61; Figure 1). Three 10-m × 10-m subplots were established at each sampling site to investigate the species composition of the community, identify species and collect plant specimens. Eventually, a combination of the species found in the three subplots was used to represent the species composition of the community at each site.
Usage notes
We constructed a phylogenetic tree to present the evolutionary relationships between the 285 species found at our sampling sites. As in many previous studies, we used the megatree containing 32,223 plant species published by Zanne et al. (2014) as a backbone, and used the Phylomatic platform to prune this megatree to include only the species found at our sampling sites.
To identify differences in phylogenetic diversity, we used the PD index. We assessed differences in the phylogenetic community structures of shrub communities between the two habitats using the net relatedness index (NRI) and nearest taxon index (NTI) based on this dataset. Specific method seen in picante package.