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Fucus spp. as a Mercury Contamination Bioindicator in Costal Areas (Northwestern Portugal)

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Abstract

Mercury has been considered as one of the most important pollutants in coastal and estuarine areas. Efforts have been made to detect, as early as possible, the effects of this and other metals in several species. Macroalgae, particularly Fucus spp., have been widely used as biomonitors of metal pollution. In this study, three Fucus species (F. spiralis, F. vesiculosus and F. ceranoides) were collected from several sampling sites in Portugal. The concentrations of mercury were determined in three structural parts (holdfast, stipe and receptacles). Two different techniques were used to determine mercury concentrations. Almost all mercury concentrations (in sediments and in water) were below national and international standards. Mercury concentration in the specimens (0.012–0.061 μg g−1 for receptacles, 0.028–0.221 μg g−1 for stipe and 0.029–0.287 μg g−1 for holdfast) was always higher that those obtained for the sediment (0.001–0.112 μg g−1). With few exceptions the contrary was found for receptacles. In general, a good agreement between concentrations of mercury in sediment and Fucus was found. The results indicate that Fucus accumulate mercury and may be a suitable species for use in risk assessment for coast and estuarine areas, by providing valuable information regarding the levels of mercury that will be available for the consumers of Fucus spp.

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Acknowledgments

This work was supported by FCT (Fundação para a Ciência e Tecnologia) through project CONTROL (contract PDCTM/C/MAR/15266/1999).

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Author notes

  1. E. Cairrão

    Present address: CICS-Centro de investigação em Ciências da Saúde, Universidade da Beira Interior, Rua Marquês d’Ávila e Bolama s/n, Covilha, 6200-001, Portugal

Authors and Affiliations

  1. CESAM & Departamento de Biologia, Universidade de Aveiro, Aveiro, 3800-193, Portugal

    E. Cairrão, M. J. Pereira, M. R. Pastorinho, F. Morgado & A. M. V. M. Soares

  2. Centro Interdisciplinar de Investigação Marinha e Ambiental, Laboratório de Ecotoxicologia, Rua dos Bragas n°177, Porto, 4050-123, Portugal

    E. Cairrão & L. Guilhermino

  3. Instituto de Ciências Biomédicas de Abel Salazar, Departamento de Estudos de Populações, Laboratório de Ecotoxicologia, Universidade do Porto, Porto, 4009-003, Portugal

    L. Guilhermino

  4. CESAM & Departamento de Biologia, Universidade de Aveiro, Aveiro, 3810-193, Portugal

    F. Morgado

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  1. E. Cairrão
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  2. M. J. Pereira
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  4. F. Morgado
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  5. A. M. V. M. Soares
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Correspondence to F. Morgado.

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Cairrão, E., Pereira, M.J., Pastorinho, M.R. et al. Fucus spp. as a Mercury Contamination Bioindicator in Costal Areas (Northwestern Portugal). Bull Environ Contam Toxicol 79, 388–395 (2007). https://doi.org/10.1007/s00128-007-9257-9

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  • DOI: https://doi.org/10.1007/s00128-007-9257-9

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