TABLE 1.
Summary of statistics for water quality and microbial marker variables in different bodies of watera
| Body of water |
E. coli counts (MPN · 100 ml−1)
|
Ruminant markers
|
Human markers
|
Turbidity (formazin turbidity units)
|
Temp (°C)
|
pH
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Geometric mean | Lower 95% CI | Upper 95% CI | Frequency | 95% CI | Frequency | 95% CI | Geometric mean | Lower 95% CI | Upper 95% CI | Mean | 95% CI | Mean | 95% CI | |
| Tillamook Bay | 38.38 A | 8.77 | 11.28 | 0.76 A | ±0.05 | 0.65 A | ±0.06 | 4.38 A | 0.32 | 0.35 | 11.61 A | ±0.50 | 7.26 A | ±0.05 |
| Kilchis River | 38.97 A | 8.40 | 10.64 | 0.72 A | ±0.06 | 0.27 B | ±0.06 | 1.22 B | 0.15 | 0.17 | 10.24 B,C,D | ±0.39 | 6.89 B | ±0.04 |
| Miami River | 37.16 A | 6.82 | 8.31 | 0.76 A | ±0.05 | 0.28 B | ±0.06 | 0.95 C | 0.10 | 0.11 | 9.83 B,C | ±0.28 | 6.90 B | ±0.03 |
| Tillamook River | 242.83 B | 54.81 | 70.69 | 0.81 A | ±0.05 | 0.40 B,C | ±0.06 | 3.13 D | 0.29 | 0.32 | 10.20 B,C,D | ±0.42 | 6.76 C | ±0.04 |
| Trask River | 78.04 C | 13.48 | 16.26 | 0.77 A | ±0.05 | 0.51 C | ±0.06 | 2.75 D | 0.36 | 0.41 | 10.63 B,D | ±0.48 | 6.99 D | ±0.04 |
| Wilson River | 25.13 D | 4.66 | 5.66 | 0.68 A | ±0.06 | 0.25 B | ±0.05 | 2.07 E | 0.28 | 0.32 | 13.20 E | ±0.75 | 7.13 E | ±0.04 |
a
For continuous variables, the results are the least-square means (back-transformed for E. coli and turbidity). Within a column, values followed by the same letter are not significantly different at an alpha of 0.05 based on corrected multiple ’pairwise’ comparison procedures. CI, confidence interval.