Table 1.

Kinetic parameters of host-associated Bacteroidales, Enterococcus, Campylobacter, Salmonella, and adenovirus in freshwater microcosms at 22°C^d

Condition	Target DNA	Cell									DNA
		N0 (gc ml−1)a	k1 (h−1)		N1 (gc ml−1)	k2 (h−1)		t1 (h)	R2	T99c (h)	N0 (gc ml−1)	k1 (h−1)		t1 (h)	R2	T99 (h)
			Mean	SEb		Mean	SE					Mean	SE
Light	Universal Bacteroidales	1.63 × 108	0.245	0.016	5.15 × 105	0.028	0.005		0.98	22	3.79 × 108	0.050	0.008		0.91	98
	Human Bacteroidales	4.38 × 107	0.187	0.026	2.64 × 106	0.052	0.016		0.95	25	1.07 × 108	0.048	0.006		0.99	103
	Cow Bacteroidales	3.47 × 106	0.234	0.021	6.40 × 103	0.012	0.006		0.98	20	9.84 × 106	0.030	0.010		0.89	151
	Dog Bacteroidales	3.63 × 106	0.228	0.032	1.77 × 104	0.021	0.007		0.88	20	8.59 × 106	0.049	0.003		0.98	102
	Cultivable Enterococcus	3.12 × 106	0.081	0.006					0.94	56
	Enterococcus	3.21 × 106	0.038	0.006					0.84	118	2.65 × 107	0.090	0.002	23	0.89	98
	Campylobacter jejuni	3.19 × 104	0.174	0.021	3.19 × 103	0.045	0.01		0.81	34	2.20 × 105	0.055	0.013	46	0.90	123
	Salmonella Typhimurium	4.42 × 105	0.052	0.01				23	0.84	122	4.13 × 106	0.047	0.002	23	0.94	129
	Adenovirus										5.43 × 104	0.056	0.010		0.76	72
Dark	Universal Bacteroidales	1.54 × 108	0.082	0.016	1.00 × 107	0.031	0.01		0.99	57	4.01 × 108	0.042	0.006		0.89	101
	Human Bacteroidales	4.62 × 107	0.071	0.011	2.53 × 105	0.025	0.017		0.95	62	1.08 × 108	0.059	0.005		0.98	95
	Cow Bacteroidales	3.40 × 106	0.077	0.008	3.85 × 104	0.012	0.006		0.95	59	1.09 × 107	0.045	0.003		0.87	125
	Dog Bacteroidales	3.60 × 106	0.098	0.011	1.77 × 104	0.021	0.007		0.95	47	9.01 × 106	0.050	0.003		0.97	91
	Cultivable Enterococcus	7.28 × 106	0.087	0.006				23	0.96	99
	Enterococcus	2.65 × 107	0.105	0.001				23	0.99	90	5.89 × 107	0.093	0.008	23	0.82	95
	Campylobacter jejuni	3.65 × 104	0.041	0.003					0.97	121	2.20 × 105	0.064	0.017	46	0.88	118
	Salmonella Typhimurium	3.39 × 106	0.041	0.006				23	0.96	144	6.37 × 106	0.043	0.007	23	0.97	154
	Adenovirus										5.43 × 104	0.049	0.007		0.84	99

^agc ml⁻¹ = number of gene copies per milliliter.

^bSE, standard error.

^cTime for 2-log reduction.

^dThe models are as follows: $N=N_0\times e^{-k_{1}t}+N_1\times e^{-k_{2}t}$, where N is number of gene copies ml⁻¹ of target DNA at time t, N₀ and N₁ are the initial concentration of target DNA, and k₁ and k₂ are the decay rate constants; $N=N_0\times e^{-k_{1}t}$, where N is number of gene copies or bacteria ml⁻¹ at time t, N₀ is the initial concentration, and k₁ is the decay rate constant; and $N_t=N_0\times e^{-k(t-t_1)}$, where t₁ is time at the end of lag period, t is time at any point after a lag period, and other parameters are as given in the text.