Seasonal temperature and power plant chlorination effects on estuarine invertebrates

The influence of seasonal temperatures (15-22 degrees C) on chlorine (0.00, 0.15 and 0.30 mg/L total residual chlorine), delta T (2, 6 and 10 degrees C), and exposure duration (0.08, 2.0 and 4.0 hr) interaction studies simulating power plant entrainment and effluent discharge conditions was evaluated for opossum shrimp. Neomysis americana and amphipods, Gammarus Seasonal Temperature was an important factor effecting the toxicity of the three treatment variables with both of these organisms. Mortality responses were greater at the higher acclimation temperatures.