Table 3.

Correlations for notable taxa at the genus level across sampling heights, based on mean relative abundance ($>1\%$) for each sampling height.

Reference number	Taxa (genus)	$r_s$ score	S	$p$-Value
1	Streptomyces	$-0.66$	23,596	$<0.01$***
2	Kingella	$+0.39$	8,606	$<0.01$***
3	Lactobacillus	$+0.54$	6,470	$<0.01$***
4	Flavobacterium	$+0.53$	6,639	$<0.01$***
5	Sphingomonas	$+0.39$	8,577	$<0.01$***

Note: The Spearman’s rank order correlation test was used. $\mathrm{S}=\left(n3-n\right)\times \left(1-rs\right)/6$, where $n$ is the number of bivariate observations and rs is Spearman’s rank correlation coefficient. Reference number refers to the number key and corresponding notable taxa in Figure 7 and Table 4. *0.05. **0.01. ***$<0.01$.