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. 2014 Jan;80(1):110–118. doi: 10.1128/AEM.02203-13

TABLE 2.

Growth and decay rates of FIB and MST markers in cow pats (n = 18)a

Organism or genetic marker Treatment Growth rate (β1) Decay rate (β2) T90 (days)b T99 (days)b Model r2
Escherichia coli Unshaded 0.881* −0.297* 7.75 15.51 0.82d
Shaded 0.0544 −0.176 13.08 26.16 0.82d
EPA-EC23S ND −0.0621 37.08 74.15 0.80
Enterococcusc NA −0.163 14.13 28.25 0.76
Entero1c NA −0.0434 53.06 106.12 0.61
CowM3c NA −0.126 18.27 36.54 0.69
Rum-2-bacc NA −0.111 20.74 41.48 0.74
GenBacc NA −0.128 17.99 35.97 0.74
a

Log concentrations were modeled within the general linear model framework. Asterisks indicate statistical significance between the shaded and unshaded treatments (P < 0.05). ND, not determined; NA, not available.

b

Derived from decay rate (β2).

c

Since shading had no effect on decay rates, decay rates are not presented as a function of treatment.

d

The model includes shaded and unshaded treatments, since it was a significant term.