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Lou-Anne Ambre Chevrollier

Bioaccumulation of metals in the planktonic food web in the Gulf of Guinea

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  • Lou-Anne Ambre Chevrollier
  • Marja Koski, Technical University of Denmark
  • ,
  • Jens Søndergaard
  • Stefan Trapp, Technical University of Denmark, Denmark
  • Denis Worlanyo Aheto, University of Cape Coast Ghana
  • ,
  • George Darpaah, University of Cape Coast Ghana
  • ,
  • Torkel Gissel Nielsen, Technical University of Denmark

Metal contamination is a threat for marine ecosystems from an environmental, economic and public health perspective, particularly in regions where local communities rely on marine resources such as the Gulf of Guinea. Plankton are the point of entry for metals in the marine food web, potentially contaminating seafood. We investigated the bioaccumulation of 12 metals in three size classes of plankton from the coast of Ghana. Metal concentrations were high in the micro- and mesoplankton, in particular for Mn, Mo and Zn (up to 100 mg kg −1) and Fe (>100 mg kg −1). All metals significantly bioaccumulated (10 3–10 6 L kg −1) and the bioaccumulation increased from the smallest to larger size fractions, suggesting a biomagnification. These metals included the highly toxic elements As, Cd and Pb. Our results highlight the need to monitor metal occurrence in the Gulf of Guinea, to reduce pollution and ensure food safety, in accordance with the UN SDG #14.

Original languageEnglish
Article number113662
JournalMarine Pollution Bulletin
Publication statusPublished - Jun 2022

    Research areas

  • Bioaccumulation, Biomagnification, Metals, Plankton, Pollution, Tropical coastal waters

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