Bacterial Communities in Polluted Seabed Sediments: A Molecular Biology Assay in Leghorn Harbor

Table 2

Alpha diversity indices for the two samples at different cutoff values.

Sample	cutoff	Observed richness (OTUs)	Chao 1 estimator	Shannon index
1.2	0.01	82	667,2	4,36
	0.03	75	258,3	4,24
	0.05	71	193,8	4,17
2.1	0.01	80	620,2	4,33
	0.03	75	306,1	4,24
	0.05	68	239,1	4,07