TABLE 3.

Summary of dsrA and mcrA clone libraries in unamended and amended sediment samples in both April (spring) and August (summer)^a

Parameter	dsrA				mcrA
	April 2004 (20°C)		August 2004 (29°C)		April 2004 (20°C)		August 2004 (29°C)
	No dextran	With dextran	No dextran	With dextran	No dextran	With dextran	No dextran	With dextran
No. of sequences	36, 39	34, 17	40, 42	37, 34	42, 40	17, 29	27, 55	38, 25
No. of OTUs	23, 27	19, 17	22, 26	20, 15	8, 11	5, 7	8, 12	10, 8
Coverage estimate (%)	32, 26	47, 0	45, 27	40, 60	93, 85	94, 97	85, 91	89, 84
Chao 1 richness estimate	36, 45	19, 24	27, 28	28, 17	9, 11	3, 6	9, 14	10, 12
No. of different sequences	34, 38	27, 17	34, 38	33, 29	21, 28	15, 22	19, 42	21, 19

^aFor each treatment, n = 2. Data for each of two replicates are separated by a comma. For all data, the time period was 9 days.