Patterns of Change in Metabolic Capabilities of Sediment Microbial Communities in River and Lake Ecosystems

Table 2

Physicochemical properties of the sediments^a.

Sites	Moisture content (%)	pH (1 : 10 water extract)	Electrical conductivity (µS·cm^−1)	Ash content (%)	Organic matter (%)
Spring
Saint Clair River sites
SC1	102 ± 16.3	6.64 ± 0.02	228 ± 17.1	36.67 ± 40.57	64.33 ± 40.46
SC2	22 ± 2.2	6.29 ± 0.14	33 ± 5.0	86.40 ± 16.84	13.60 ± 16.84
SC3	95 ± 15.0	6.88 ± 0.07	255 ± 20.8	32.54 ± 11.17	67.50 ± 11.17
Lake Saint Clair sites
LC1	26 ± 0.3	6.53 ± 0.35	90 ± 11.6	96.95 ± 1.568	3.052 ± 1.568
LC2	32 ± 6.2	7.08 ± 0.20	80 ± 0.0	78.65 ± 37.12	21.35 ± 37.12
LC3	68 ± 16.1	7.17 ± 0.29	225 ± 5.8	80.28 ± 24.63	19.72 ± 24.63
Summer
Saint Clair River sites
SC1	72 ± 81.46	6.67 ± 0.02	258 ± 17.1	67.37 ± 32.58	32.63 ± 32.58
SC2	24 ± 6.50	7.13 ± 0.13	45 ±5.8	99.05 ± 0.36	0.95 ± 0.36
SC3	48 ± 5.80	7.32 ± 0.01	168 ± 5.0	95.21 ± 0.88	4.79 ± 0.88
Lake Saint Clair sites
LC1	31 ± 0.90	6.68 ± 0.21	73 ± 20.6	98.26 ± 0.99	1.75 ± 0.98
LC2	28 ± 0.54	6.96 ± 0.15	55 ±5.8	98.34 ± 0.10	1.66 ± 0.10
LC3	56 ± 7.41	7.23 ± 0.05	115 ± 5.8	92.46 ± 0.67	7.54 ± 0.67
Fall
Saint Clair River sites
SC1	81 ± 22.50	6.80 ± 0.05	193 ± 9.6	91.34 ± 1.80	8.66 ± 1.80
SC2	37 ± 7.96	7.10 ± 0.10	63 ± 5.0	98.16 ± 0.09	1.84 ± 0.09
SC3	81 ± 27.34	6.86 ± 0.03	150 ± 0.0	90.89 ± 0.91	9.11 ± 0.91
Lake Saint Clair sites
LC1	38 ± 10.06	6.78 ± 0.12	160 ± 58.8	97.18 ± 0.80	2.82 ± 0.80
LC2	42 ± 15.89	7.18 ± 0.04	113 ± 9.6	98.27 ± 0.97	1.74 ± 0.97
LC3	45 ± 14.50	7.24 ± 0.10	105 ± 5.8	95.76 ± 1.16	4.24 ± 1.16
Winter
Saint Clair River sites
SC1	74 ± 23.93	6.70 ± 0.43	185 ± 12.9	95.06 ± 2.05	4.94 ± 2.05
SC2	19 ± 0.84	6.75 ± 0.14	20 ± 0.0	98.81 ± 0.38	1.19 ± 0.38
SC3	78 ± 5.38	6.73 ± 0.06	165 ± 17.3	92.82 ± 1.42	7.18 ± 1.42
Lake Saint Clair sites
LC1	21 ± 1.85	6.75 ± 0.04	33 ± 5.0	99.36 ± 0.31	0.87 ± 0.29
LC2	19 ± 0.86	7.17 ± 0.27	103 ± 59.67	98.76 ± 0.33	1.24 ± 0.33
LC3	20 ± 1.28	6.77 ± 0.10	25 ± 5.8	99.13 ±0.27	0.64 ± 0.32

^aMean and standard deviation of three replicates are shown.