Cyanotoxins and water quality parameters as risk assessment indicators for aquatic life in reservoirs
Larissa Souza Passos, Éryka Costa de Almeida, Alexandre Villela, Adilson Nunes Fernandes, Marcelo Manzi Marinho, Levy Carvalho Gomes, Ernani Pinto
Abstract
cells/mL), microcystin variants MC-LR (0.67-23.63 μg/L), MC-LA (0.03-8.66 μg/L), MC-RR (0.56-7.92 μg/L), and MC-YR (0.04-1.24 μg/L), as well as the saxitoxins GTX2 (0.18-5.37 μg/L), GTX3 (0.13-4.40 μg/L), and STX (0.12-2.92 μg/L) were detected. From an ecotoxicological point of view, the estimated values for the risk quotient (RQ) for microcystins and saxitoxins were largely greater than 1, indicating a high risk to aquatic life. Therefore, further efforts need to be made to delay the eutrophication of the reservoir.
Topics & Concepts
Environmental chemistryWater qualityEnvironmental scienceMaximum Contaminant LevelEcotoxicologyEutrophicationAquatic ecosystemWater pollutionFecal coliformMicrocystinGeosminMetalloidPollutionCyanobacteriaEcologyBiologyChemistryBacteriaNutrientOdorGeneticsNeuroscienceMetalOrganic chemistryAquatic Ecosystems and Phytoplankton DynamicsMarine Toxins and Detection MethodsMarine and coastal ecosystems