Table 1.
Partitioning of the variation of survival ratios of Listeria monocytogenes as a function of contextual variables.
Table 2.
Contribution of the five most important explanatory variables to the variation in survival ratios of Listeria monocytogenes.
Figure 1.
Survival of Listeria monocytogenes in nine soils: non-sterile (panel A) and sterile (panel B).
Black, dark grey, medium grey and light grey bars represent L. monocytogenes population density (CFU per gram of dry soil) at Days 0, 7, 14 and 84 after inoculation, respectively. Error Bars indicate the mean ± standard deviation over three replicated measurements.
Table 3.
Land use and main edaphic factors of the subset of nine soils.
Figure 2.
Mean survival ratios of L. monocytogenes in non-sterile and sterile soils depends on soil pH.
The nine soils were distributed in three equal classes function of their pH with (A) 3 soils with pH <5.5, (B) 3 soils with 5.5<pH <7 and (C) 3 soils with pH >7. Mean survival ratios were calculated between soils belonging to the same pH classes for each sampling time. Triangles represents mean survival ratio in non-sterile soils and circles represented mean survival ratio in sterile soils. Error bars represent the mean ± standard deviation of triplicate experiments.
Table 4.
Analysis of variance for Listeria monocytogenes survival ratios in a subset of nine soils.