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Water quality was monitored along an Andean river of global importance using the freshwater bivalve Diplodon chilensis as sentinel species. Bivalves were placed in cages at three sites (S1–3) in the Chimehuin River in order to evaluate the long‐term effects of a trout hatchery (S2) and the open dump and sewage treatment plant of a nearby city (S3). Water samples and bivalves were collected at 0, 3,...
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