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Article

Bacterioplankton Community as a Biological Element for Reservoirs Water Quality Assessment

1
Departamento de Biologia da Faculdade de Ciências da Universidade do Porto (FCUP), Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
2
Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Jun Yang
Water 2021, 13(20), 2836; https://doi.org/10.3390/w13202836
Received: 13 September 2021 / Revised: 6 October 2021 / Accepted: 7 October 2021 / Published: 12 October 2021
The Water Framework Directive (WFD) is used to evaluate the water quality of aquatic ecosystems. Phytoplankton is the only biological element considered in the reservoirs water quality assessment. In this study, we aimed to assess the use of the bacterioplankton community as an indicator of water quality, using a culture-independent assay (denaturing gradient gel electrophoresis, DGGE). Four Portuguese reservoirs (Miranda, Pocinho, Aguieira and Alqueva) were analysed in four periods (autumn 2018, spring and autumn 2019, and spring 2020). Bacterial total abundance had similar values for Miranda, Pocinho and Aguieira, and generally lower values for Alqueva. Diversity and richness values did not show a clear trend. Negative correlations were observed between some nutrients and the bacterial community. Overall, members of Actinobacteria, Bacteroidetes, Cyanobacteria, Nitrospirae and Proteobacteria were identified in all sampling sites. In Alqueva, no spatial, temporal or water body quality relationships with bacterial community were observed, which may be due to its higher size, low water velocity rate and higher residence times. However, in Miranda, Pocinho and Aguieira, a strong spatial and temporal bacterial community dynamic was observed. Furthermore, the presence of some species (e.g., Acinetobacter sp.) may reflect the poor water quality that was not detected by the WFD approach. View Full-Text
Keywords: bacteria; bioindicator; ecological quality; heavily modified water bodies; lentic ecosystem bacteria; bioindicator; ecological quality; heavily modified water bodies; lentic ecosystem
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MDPI and ACS Style

Pinto, I.; Calisto, R.; Serra, C.R.; Lage, O.M.; Antunes, S.C. Bacterioplankton Community as a Biological Element for Reservoirs Water Quality Assessment. Water 2021, 13, 2836. https://doi.org/10.3390/w13202836

AMA Style

Pinto I, Calisto R, Serra CR, Lage OM, Antunes SC. Bacterioplankton Community as a Biological Element for Reservoirs Water Quality Assessment. Water. 2021; 13(20):2836. https://doi.org/10.3390/w13202836

Chicago/Turabian Style

Pinto, Ivo, Rita Calisto, Cláudia R. Serra, Olga M. Lage, and Sara C. Antunes 2021. "Bacterioplankton Community as a Biological Element for Reservoirs Water Quality Assessment" Water 13, no. 20: 2836. https://doi.org/10.3390/w13202836

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