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.

本研究遵循稀疏化（rarefication）流程对数据进行分析。在针对操作分类单元（OTU）丰度与群落组成的置换多元方差分析（PERMANOVA）模型中，纳入全部潜在解释变量，并通过错误发现率（FDR）校正以处理多重比较问题。所纳入的变量包括：样本是否采集自黑猩猩栖息巢、栖息巢的老化程度、季节（雨季或旱季）、海拔高度（单位：米），以及样本采集自树枝还是叶片。(a) α丰富度值基于每个样本中所含唯一微生物操作分类单元的数量计算得到；(b) 群落组成数据采用布赖-柯蒂斯相异性指标，按OTU丰度进行加权处理。