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Title: Evaluation of surface water quality using an ecotoxicological approach: a case study of the Alqueva Reservoir (Portugal)
Authors: Palma, Patrícia
Alvarenga, Paula
Palma, Vera
Matos, Cláudia
Fernandes, Rosa
Soares, Amadeu
Barbosa, Isabel
Keywords: Acute toxicity
Alqueva reservoir
Chronic toxicity
Daphnia magna
Surface water toxicity
Thamnocephalus platyurus
Trace metals
Vibrio fischeri
Issue Date: Mar-2010
Publisher: Springer
Citation: Palma, P., Alvarenga, P., Palma, V., Matos, C., Fernandes, R., Soares, A., & Barbosa, I. (2010). Evaluation of surface water quality using an ecotoxicological approach: a case study of the Alqueva Reservoir (Portugal). Environmental Science and Pollution Research, 17(3), 703-716. doi: 10.1007/s11356-009-0143-3
Abstract: Freshwater reservoirs can be impacted by several hazardous substances through inputs from agricultural activity, sewage discharges, and groundwater leaching and runoff. The water quality assessment is very important for implementation of the monitoring and remediation programs to minimize the risk promoted by hazardous substances in aquatic ecosystems. Evaluation of the degree of contamination of aquatic environments must not take in account only its chemical characterization but it must be complemented with biological assays, which determine potential toxic effects and allows an integrated evaluation of its effects in populations and aquatic ecosystem communities. The application of this type of strategy has clear advantages allowing a general evaluation of the effects from all the water components, including those due to unknown substances and synergic, antagonistic, or additive effects. There are only a few studies that reported ecotoxicological acute end points, for the assessment of surface water quality, and the relationship among toxicity results and the anthropogenic pollution sources and the seasonal period. The aim of this study was to assess the ecotoxicological characterization of the surface water from Alqueva reservoir (South of Portugal) and to evaluate the influence of anthropogenic sources of pollution and their seasonal variation in its toxicity. The construction of Alqueva reservoir was recently finished (2002) and, to our knowledge, an ecotoxicological assessment of its surface water has not been performed. Because of that, no information is available on the possible impact of pollutants on the biota. The surface water toxicity was assessed using acute and chronic bioassays. The results are to be used for developing a monitoring program, including biological methods.
Peer reviewed: yes
ISSN: 1614-7499
Publisher version:
Appears in Collections:D-TCA - Artigos em revistas com peer review

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