Table 3:
Physicochemical water parameters of the turbidity physiology test conducted on late-larval delta smelt 60 days post-hatch exposed to different levels of turbidity over 24 h
| Turbidity (NTU) nominal concentration | DO (mg l−1) |
Spec. Con. (µS cm−1) |
pH |
Salinity (PSU) |
Turbidity (NTU) measured concentration |
Ammonia (mg l−1) NH3-N |
Light intensity (lx) | Temperature (°C) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T0 | T24 | T0 | T24 | T0 | T24 | T0 | T24 | T0 | T24 | T0 | T24 | |||
| 5 | 9.47 | 9.29 | 764 | 864 | 8.17 | 8.23 | 0.4 | 0.4 | 6.38 | 6.30 | Average = '0.08 ± '0.01 SE | Average = '0.15 ± 0.00 SE | Average = '48.07 ± '1.13 SE | Average = '17.52 ± 0.00 SE |
| 12 | 9.53 | 9.45 | 692 | 890 | 8.63 | 8.09 | 0.3 | 0.4 | 8.8 | 11.8 | ||||
| 25 | 9.43 | 9.15 | 768 | 1083 | 8.36 | 8.02 | 0.4 | 0.4 | 26.4 | 21.9 | ||||
| 35 | 9.28 | 9.09 | 882 | 858 | 8.54 | 7.8 | 0.5 | 0.4 | 32.2 | 27.3 | ||||
| 50 | 8.41 | 9.19 | 853 | 864 | 8.56 | 7.74 | 0.4 | 0.4 | 53.2 | 42.5 | ||||
| 80 | 9.34 | 7.75 | 887 | 1131 | 8.49 | 7.69 | 0.4 | 0.5 | 82.2 | 62.5 | ||||
| 120 | 9.32 | 8.62 | 1017 | 1082 | 8.50 | 7.76 | 0.5 | 0.5 | 129 | 123 | ||||
| 250 | 9.29 | 8.62 | 910 | 1163 | 8.78 | 8.41 | 0.4 | 0.6 | 240 | 202 | ||||
Values for each exposure vessel and respective turbidity level were obtained at test initiation T0 and test termination T24.Abbreviations: DO, dissolved oxygen; NTU, nephelometric turbidity units; PSU, practical salinity unit; Spec. Con., specific conductance; T0, time point at test start; T24, time point at test termination.