Data and codes supporting analyses used in the main results in the paper "Aridity drives community-wide shifts towards phytochemical underdispersion".

In this study we explored shifts in community-level responses reflected in community-weighted means (CWMs), Rao’s quadratic entropy (Rao’s Q) and beta-diversity for functional traits (specific leaf area, leaf area, leaf dry matter content and height) and chemical properties (features, classes, structural/compositional diversity) in eight plant communities distributed along a sub-Saharan aridity gradient. We also investigated whether community-level responses to aridity were consistent with intraspecific shifts in- and-diversity estimated for functional traits and the metabolome for <i>Artemisia herba-alba</i>.The analyses made in this study were based on the data available here, which includes:The peak list obtained from MZmine ("feature_list.csv")The canopus compound summary obtained from SIRIUS ("canopus_compound_summary.csv")The compound identifications obtained from SIRIUS ("compound_identifications.csv")The meta data ("meta_data.csv")Information on sites ("site_information.csv")Trait data ("trait_data.csv")In addition, the file "description_data.xlsx" and "Description data.docx" includes details on the datasets and scripts. For information on analyses performed, please see Material and Methods in "Aridity drives community-wide shifts towards phytochemical underdispersion".

本研究探讨了沿撒哈拉以南干旱梯度分布的8个植物群落中，功能性状（比叶面积（specific leaf area）、叶面积（leaf area）、叶干物质含量（leaf dry matter content）及株高（height））和化学属性（特征、类别、结构/组成多样性）的群落水平响应变化，这些变化体现在群落加权平均值（community-weighted means, CWMs）、Rao二次熵（Rao’s quadratic entropy, Rao’s Q）以及β多样性（beta-diversity）上。此外，本研究还探究了植物群落对干旱的响应是否与银叶蒿（Artemisia herba-alba）功能性状及代谢组（metabolome）的种内α与β多样性变化相一致。

本研究的分析基于本数据集提供的以下数据：从MZmine软件导出的峰列表（"feature_list.csv"）、从SIRIUS软件导出的CANOPUS化合物汇总表（"canopus_compound_summary.csv"）、从SIRIUS软件导出的化合物鉴定结果（"compound_identifications.csv"）、元数据（"meta_data.csv"）、样地信息（"site_information.csv"）以及性状数据（"trait_data.csv"）。

此外，"description_data.xlsx"与"Description data.docx"文件包含本数据集及分析脚本的详细说明。关于本研究所用分析方法的具体信息，请参阅论文《Aridity drives community-wide shifts towards phytochemical underdispersion》中的材料与方法部分。