Differential sensitivity of Dugesia dorotocephala and Cheumatopsyche pettiti to water acidification: ecological implication for predator-prey interactions.


The initial hypothesis that predation pressure should decrease with decreasing pH in aquatic macrobenthic communities if predatory invertebrates are more sensitive to water acidification than prey invertebrates is tested. Short-term toxicity bioassays were conducted in soft water (average value of total hardness 38.0 mg CaCO3/L) to determine the… (More)


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