Articles | Volume 44, issue 1
https://doi.org/10.5194/jm-44-119-2025
https://doi.org/10.5194/jm-44-119-2025
Research article
 | 
26 May 2025
Research article |  | 26 May 2025

Leisure boat harbours, hidden alien species, and pollution: a case study of Hinsholmskilen harbour (Gothenburg, Sweden)

Irina Polovodova Asteman, Emilie Jaffré, Agata Olejnik, Maria Holzmann, Mary McGann, Kjell Nordberg, Jean-Charles Pavard, Delia Rösel, and Magali Schweizer

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Short summary
Small boat harbours are suggested to cause pollution and alien species introductions. Here we analysed surface sediments in Hinsholmskilen harbour (Sweden) for benthic foraminifera and potentially toxic elements. Molecular and morphological analyses of foraminifera show the presence of two alien species, Trochammina hadai and Ammonia confertitesta, whilst pollution is mostly low for Cd, Co, Ni, and Pb. In contrast, As, Zn, Cu, Hg, and Cr have high levels due to the use of these elements in boat paints.
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