Table 4.
Median hazardous concentrations for 5% and 50% of species (HC5 and HC50 respectively; μg/l) and their lower (95%) and upper (5%) confidence limits, derived from the SSDs shown in Fig. 1 for malathion (a) and carbendazim (b), in μg/l
| Temperate | Amazon | ||
|---|---|---|---|
| (a) Malathion | |||
| Fish | HC5 | 53.0 (20.9–107) | 57.6 (4.00–166) |
| HC50 | 1166 (690–1970) | 406 (143–1157) | |
| Arthropods | HC5 | 0.45 (0.19–0.94) | 0.31 (0.00008–4.75) |
| HC50 | 42.0 (25.0–71.0) | 30.54 (1.60–580) | |
| (b) Carbendazim | |||
| Fish | HC5 | 2.10 (0.0007–29.5) | 1643 (614–2428) |
| HC50 | 181 (10.3–3184) | 3384 (2298–4984) | |
| Invertebrates | HC5 | 9.80 (0.30–56.6) | 5620 (92.8–28630) |
| HC50 | 411 (84.4–2003) | 114300 (22760–574600) | |