Water quality of a coastal lagoon (ES, Brazil): abiotic aspects, cytogenetic damage, and phytoplankton dynamics

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Duarte, Ian Drumond ; Vieira Fraga Silva, Nayara Heloisa ; Souza, Iara da Costa ; de Oliveira, Larissa Bassani ; Rocha, Livia Dorsch ; Morozesk, Mariana ; Bonomo, Marina Marques ; Pereira, Thais de Almeida ; Dias, Mauro Cesar ; Fernandes, Valeria de Oliveira ; Matsumoto, Silvia Tamie

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 24, n. 11, p. 10855-10868, APR 2017.
• Citações Web of Science: 2

Resumo

Assessment of water resources requires interdisciplinary studies that include multiple ecosystem aspects. This study evaluated the water quality of Juara Lagoon (ES, Brazil) based on physical and chemical variables, cytogenetic responses in Allium cepa and phytoplankton dynamics. Three sampling sites were defined and water samples were collected during two sampling periods. Analyses such as determination of photic zone, conductivity, and concentrations of nutrients and metals were conducted as well as cytotoxic, mutagenic, and genotoxic potentials using A. cepa test. The main attributes of phytoplankton community, such as total richness, total density, density by class, dominance, and diversity, were also evaluated. Results have revealed that Juara Lagoon has signs of artificial eutrophication at two sampling sites due to high levels of total phosphorus and ammonia nitrogen. Cytotoxic, genotoxic, and mutagenic potentials were detected as well as high concentrations of Fe and Mn. Furthermore, 165 phytoplankton taxa were recorded, with highest richness in Chlorophyceae and Cyanophyceae classes. In addition, Cyanophyceae presented as the highest density class. A. cepa test and phytoplankton community evaluation indicated that the ecological quality of Juara Lagoon is compromised. (AU)

• Processo FAPESP: 14/04832-3 - Estudo da origem e transferência de metais e metaloides em áreas de manguezal, por meio de análises isotópicas na cadeia trófica e efeitos bioquímicos e morfológicos em Centropomus parallelus
• Beneficiário: Iara da Costa Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado