Table 4.
Salmonella prevalence (average ± standard deviation) at sites by season and by watershed.
| Watershed | Season | P-value1 | |||
|---|---|---|---|---|---|
| Fall | Winter | Spring | Summer | ||
| All sampling sites | 54 ± 10%A3 | 60 ± 20%AB | 73 ± 14%B | 71 ± 11%B | 0.0011 |
| Gabilan | 62 ± 31% | 71 ± 32% | 77 ± 21% | 69 ± 22% | 0.8613 |
| Carr Lake | 40 ± 17% | 50 ± 15% | 60 ± 20% | 52 ± 29% | 0.4528 |
| Salinas River | 71 ± 26% | 60 ± 16% | 81 ± 22% | 84 ± 26% | 0.1365 |
| Tembladero | 36 ± 16% | 61 ± 12% | 58 ± 24% | 60 ± 32% | 0.2727 |
| Alisal | 39 ± 17% | 41 ± 38% | 49 ± 38% | 54 ± 42% | 0.8958 |
| P-value2 | 0.0807 | 0.3121 | 0.1676 | 0.2555 | NA |
1
P-values in this column were calculated from the data in the corresponding row.
2
P-values in this row were calculated from the data in the corresponding column, except for the data in the row marked “All sampling sites.”
3
Letters indicate statistical groupings by row with values sharing letters having no statistical difference. Letters are shown only for values that have a P-value < 0.05.