Table 1. Results of data fitted to a four-parameter logistic function (Fig. 2). The curves were constrained between 0 and 100%.
| Control (0 mg L−1) | Siliciclastic (high) (~700 mg L−1) | |
|---|---|---|
| Best-fit parameters (95% CI) | ||
| EC50 | 6.76 × 103 (5.74 × 103–7.96 × 103) | 2.51 × 105 (1.92 × 105–3.28 × 105) |
| *Top/Fmax (%) | 95.88 (93.03–98.72) | 95.88 (93.03–98.72) |
| Bottom (%) | 5.06 (2.38–7.74) | 1.65 (0.00–3.51) |
| Slope | 1.547 (1.09–2.00) | 2.36 (1.74–2.99) |
| Control (0 mg mL−1) | Siliciclastic (low) (~230 mg L−1 ) | |
| Best-fit parameters (95% CI) | ||
| EC50 | 1.81 × 104 (1.31 × 104–2.50 × 104) | 2.87 × 104 (2.05 × 104–4.06 × 104) |
| *Top/Fmax (%) | 92.72 (88.89–100.00) | 92.72 (88.89–100.00) |
| *Bottom (%) | ~0.00 (0.00–3.22) | ~0.00 (0.00–3.22) |
| *Slope | 1.26 (0.95–1.58) | 1.26 (0.95–1.58) |
| Control (0 mg L−1 ) | Carbonate (~230 mg L−1) | |
| Best-fit parameters (95% CI) | ||
| EC50 | 1.54 × 104 (1.23 × 104–1.93 × 104) | 1.54 × 104 (1.23 × 104–1.93 × 104) |
| *Top/Fmax (%) | 94.33 (91.19–97.48) | 94.33 (91.19–97.48) |
| *Bottom (%) | 0.54 (0.00–3.02) | 0.54 (0.00–3.02) |
| *Slope | 2.04 (1.09–3.00) | 2.04 (1.09–3.00) |
*Indicates sharing of parameters (bottom, top/Fmax, and slope).