Results of Mantel tests examining the relationship between change in community composition of songbirds between sites on the gradient and change in either live biomass or detritus mass between sites for each of five years in which we did surveys.

Values represent the correlation, either negative or positive, between community change and environmental change. Values in parentheses are the p-value from significance tests.

本数据集所记录的数值表征群落变化与环境变化之间的相关性（可正可负）。括号内的数值为显著性检验所得的p值（p-value）。