TABLE 2.
Experimental conditions and recovery rates of Toxoplasma gondii surrogate microspheres in wetland transport studies
| Exptl condition | Replicate no. | Velocity (cm/s) |
Discharge (liters/min) |
Surrogate recovery (%)a |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dragon Green |
Glacial Blue |
||||||||||
| Top | Bottom | Top | Bottom | Top | Bottom | Total | Top | Bottom | Total | ||
| Mudflat | 1 | 1.99 | 0.63 | 17.91 | 5.70 | 79.68 | 9.10 | 88.78 | 83.06 | 8.10 | 91.17 |
| 2 | 1.99 | 0.54 | 17.91 | 4.84 | 79.68 | 10.04 | 80.86 | 68.70 | 9.12 | 77.82 | |
| Mudflat slow | 1 | 0.29 | 0.15 | 2.60 | 1.33 | 58.85 | 14.11 | 72.96 | 49.42 | 12.33 | 61.76 |
| 2 | 0.34 | 0.17 | 3.05 | 1.50 | 37.39 | 21.08 | 58.47 | 38.13 | 20.76 | 58.88 | |
| Vegetated | 1 (Fall) | 0.24 | 0.10 | 2.16 | 0.88 | 47.24 | 0.87 | 48.12 | 36.57 | 0.95 | 37.52 |
| 2 (Spring) | 0.29 | 0.15 | 2.60 | 1.33 | 48.08 | 6.19 | 54.27 | 46.50 | 5.90 | 52.41 | |
The number of surrogate microspheres recovered was calculated for top and bottom samples based on the product of the discharge rate and sphere concentration for each level; the percent recovery is the proportion of spheres recovered versus spheres released (see Materials and Methods).