Table S3. PERMANOVA results. from Ecology of sleeping: the microbial and arthropod associates of chimpanzee beds

Data were analyzed following rarefication. All potential explanatory variables were included within both the OTU richness and community composition PERMANOVA models, using an FDR correction for multiple comparisons. Variables included whether a sample was collected from a chimpanzee bed, the age of a bed, season (wet or dry), elevation above sea level (m), and whether a sample was from a branch or a leaf. (a) Alpha richness values were calculated based on the number of unique microbial OTUs present in each sample. (b) Community composition data were weighted by OTU abundance using the Bray-Curtis dissimilarity metric.

本研究采用稀疏化（rarefication）方法对数据进行分析。所有潜在解释变量均被纳入操作分类单元（Operational Taxonomic Unit，OTU）丰富度与群落组成的置换多元方差分析（PERMANOVA）模型，并采用错误发现率（False Discovery Rate，FDR）校正多重比较。所纳入的变量包括：样本是否采集自黑猩猩巢床、巢床的使用时长、季节（湿季或干季）、海拔高度（单位：米），以及样本取自树枝还是叶片。
(a) α多样性丰富度值基于每个样本中所含的独特微生物OTU数量计算得到。
(b) 群落组成数据采用Bray-Curtis相异度指标，以OTU丰度进行加权处理。