PERMANOVA pair-wise comparisons of bird assemblages at bird baths in urban areas and rural areas for individual bioregions.

Different PERMANOVA pair-wise comparisons between urban and rural assemblages were conducted for winter and summer. ‘-‘ indicates < 3 participants in urban and/or rural categories within a bioregion, thus precluding analysis.针对冬季与夏季两个季节，分别开展了多组不同的城乡群落间置换多元方差分析（PERMANOVA，Permutational Multivariate Analysis of Variance）两两比较。符号"-"表示某一生物地理区域内的城乡类别中，样本量少于3个，因此无法开展对应分析。