TABLE 2.

Measures of α diversity for the samples characterized by Sogin et al. (27) for three OTU definitionsa

SampleNo. of reads0.030.050.10
OTUChaoH′OTUChaoH′OTUChaoH′
53R12,7251,5993,2225.291,4202,6225.191,0531,7334.81
55R9,8481,4692,9945.541,3022,4965.439621,7415.03
112R15,0572,2585,1895.912,0324,2825.791,5842,9925.44
115R16,1811,7493,6005.311,5523,0885.211,1351,9194.83
13713,8311,4252,6875.441,2952,4305.369891,6455.07
13812,9381,4252,5425.241,2532,1315.149571,4794.81
FS31254,8944,37110,6915.233,9489,2595.163,0956,4094.94
FS39680,7694,35910,2084.673,8068,6094.602,8045,4374.42
  • a 0.03, 0.05, and 0.10 are the OTU cutoffs in distance units. OTU signifies the number of OTUs observed, Chao signifies the Chao1 estimated minimum number of OTUs, and H′ signifies the nonparametric Shannon diversity index.