TABLE 1.

MPN counts of acetate-oxidizing (per)chlorate reducers in different environments

Environment	Counts (cells per g)
Swine waste lagoon	(2.40 ± 1.74) × 106
Pristine aquatic sediment	(4.62 ± 1.75) × 103
Mississippi river sediment	(4.27 ± 2.14) × 103
Pristine soil	(2.31 ± 1.33) × 103
Gold mine drainage sediment	(4.27 ± 2.14) × 103
Petroleum-contaminated soil	(9.33 ± 4.17) × 103
Pohic Bay	(1.49 ± 0.60) × 104
Florida swamp	(2.31 ± 1.33) × 104