Species Trait Data for Regression Analysis

Species trait data for each of the 768 paired carnivores in all 13 study areas. Species codes (Spp1 and Spp2) were derived from the first two letters of the genus and species name (e.g., EIBA = Eira barbara). Appendix S2 contains the full list of species examined in this study. We summarized the categorical variables of diet, temporal activity pattern, social structure, body size and taxonomic similarity in two ways. For the first coarse comparison method (e.g., DietCovSimple), we compared species with differing trait values (e.g., when species A | B are strict carnivore | omnivore) to those where pairs shared the trait value (e.g., strict carnivore | strict carnivore). In other words, species pairs were either labeled the ‘same’ or ‘different’ for all categorical variables of interest. For the fine-scale trait comparison (e.g., DietCov), species pairs were categorically valued for all combinations of a trait (e.g., strict carnivore | strict carnivore = 1, strict carnivore | omnivore = 2, strict carnivore | insectivore = 3, etc.). We also characterized the mean weight ratio (heavier:lighter species, MeanBodySize) between two species, including it as a log-transformed continuous variable (logMeanBodySize). We also include the observed number of carnivore species in each study area (NumSpecies) and the study area’s climate as determined by the Köppen-Geiger climate classification system (Climate). Finally, this file also includes the estimated Species Interaction Factor (SIF), the standard deviation of SIF (sd), and the log-transformed SIF values (logSIF).

本数据集涵盖全部13个研究区域内768对成对食肉动物的物种性状数据。物种代码（Spp1与Spp2）由属名和种名的前两个字母组合得到（例如EIBA代表Eira barbara）。附录S2收录了本研究考察的全部物种名录。

我们以两种方式对饮食、活动节律、社会结构、体型大小及分类学相似度等分类变量进行汇总处理。第一种为粗粒度比较方法（如DietCovSimple）：将性状值存在差异的物种对（如物种A|物种B分别为专性食肉动物|杂食动物）与性状值一致的物种对（如专性食肉动物|专性食肉动物）进行对比。简言之，所有目标分类变量下的物种对均被标记为“相同”或“不同”。

第二种为精细尺度性状比较方法（如DietCov）：针对某一性状的所有组合对物种对进行分类赋值（例如专性食肉动物|专性食肉动物=1，专性食肉动物|杂食动物=2，专性食肉动物|食虫动物=3，依此类推）。

我们还计算了每对物种的平均体重比（以体重较重者与体重较轻者的比值计，MeanBodySize），并将其转换为对数变换后的连续变量（logMeanBodySize）。

此外，数据集包含各研究区域内记录到的食肉动物物种数量（NumSpecies），以及基于柯本-盖格（Köppen-Geiger）气候分类系统划分的研究区域气候类型（Climate）。

本文件同时包含估算得到的物种相互作用因子（Species Interaction Factor, SIF）、SIF的标准差（sd），以及对数变换后的SIF值（logSIF）。