The authors regret to inform that the following sentence has been misworded in the abstract. “Toxicity of Ni at pH 4 was negatively related to DOC concentration and amount of humic-like and fulvic-like DOC and positively related to fluorescence index.” should read “Toxicity of Ni at pH 4 was POSITIVELY related to DOC concentration and amount of humic-like and fulvic-like DOC and NEGATIVELY related to fluorescen...
The so-called â œ blackwatersâ of the Amazonian Rio Negro are rich in highly coloured dissolved organic carbon (DOC), but ion-poor and very acidic, conditions that would cause fatal ionoregulatory failure in most fish. However these blackwaters support 8% of the worldâ ™ s ichthyofauna. We tested the hypothesis that native DOC provides protection against ionoregulatory dysfunction in this extreme environment. D...