Table 3. Number of OTUs_0.03 identified for each quadrant at each of the rare and abundant species definitions used in this study.

Quadrant	n = 1	n≤2	n≤5	n≤10	n>10	a≤0.004%	a>1%
1	12140	14652	16589	17340	925	15286	7
2	11052	13618	15551	16335	953	14231	7
3	12526	14999	16785	17505	903	15566	6
4	9068	10730	12075	12632	634	10730	5
Totala	39062	44658	47581	48579	2203	46050	21

n: corresponds to the number of clones, a: corresponds to percentage abundance.

^aTotal OTUs correspond to the number of OTUs identified when reads from all quadrants are combined at the specified cutoff.