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The presence of cadmium in the intertidal environments of a moderately impacted coastal lagoon in western Portugal (Óbidos Lagoon)—spatial and seasonal evaluations


A seasonal environmental monitoring program was carried out (winter 2009 to summer 2010) to evaluate the spatial and seasonal cadmium concentrations in the intertidal environments of the Óbidos Lagoon (Portugal). Also, some environmental parameters were monitored at each sampling station. Both the water and the sediment samples were contaminated, although to different degrees. In general, cadmium contamination appears to be mostly focused on the inner areas of the lagoon, namely, in Barrosa’s arm, which receives a small tributary contaminated by agro-industrial activities. Only cadmium concentration in sediment showed to be significantly influenced by seasons. Some environmental parameters presented spatial and temporal heterogeneity which influenced, to some extent, cadmium bioavailability. The results of this study allow a better understanding of the environmental quality of this ecosystem regarding cadmium contamination and may assist in the definition of future coastal management measures specifically targeted to trace metal contamination and pollution monitoring.

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This work was carried out within the scope of the research projects “Monitoring of Coastal Habitats,” funded by INDEA-IPL (Polytechnic Institute of Leiria), and “Seasonal evaluation of the environmental quality of the Óbidos Lagoon,” funded by IMAR-CMA, Marine and Environmental Research Centre. The authors gratefully acknowledge GIRM, IMAR-CMA, and MARE for their technical and logistic support, and all the colleagues at GIRM who assisted in the field and laboratory work. The research conducted complies with the current Portuguese Law.

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Correspondence to Sílvia C. Gonçalves.

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Responsible editor: Céline Guéguen

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Pedro, C.A., Santos, M.S.S., Ferreira, S.M.F. et al. The presence of cadmium in the intertidal environments of a moderately impacted coastal lagoon in western Portugal (Óbidos Lagoon)—spatial and seasonal evaluations. Environ Sci Pollut Res 23, 1960–1969 (2016).

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  • Cadmium
  • Coastal management
  • Environmental parameters
  • Pollution
  • Trace metals