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      Aqueous copper bioavailability linked to shipwreck-contaminated reef sediments

      Hartland, Adam; Zitoun, Rebecca; Middag, Rob; Sander, Sylvia; Laferriere, Alix; Saeed, Huma; De Luca, Sharon; Ross, Philip M.
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      Hartland_et_al_Sci_Rep_2019_Cu_Astrolabe.pdf
      Published version, 2.913Mb
      DOI
       10.1038/s41598-019-45911-8
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      Hartland, A., Zitoun, R., Middag, R., Sander, S., Laferriere, A., Saeed, H., … Ross, P. M. (2019). Aqueous copper bioavailability linked to shipwreck-contaminated reef sediments. Scientific Reports, 9. https://doi.org/10.1038/s41598-019-45911-8
      Permanent Research Commons link: https://hdl.handle.net/10289/13147
      Abstract
      Pollution from the grounding or sinking of ships can have long lasting effects on the recovery and dynamics of coastal ecosystems. Research on the impact of copper (Cu) pollution from the 2011 MV Rena shipwreck at the Astrolabe Reef (Otaiti), New Zealand, 5 years after the grounding, followed a multi-method and multi-disciplinary approach. Three independent measures of aqueous Cu using trace-element-clean-techniques substantiate the presence of high total, total dissolved (<2 µm) and elevated bioavailable Cu in the water column immediately above the aft section of the wreck where the highest sedimentary load of Cu was located. Intermittently elevated concentrations of strong Cu-binding ligands occurred in this location, and their binding strength was consistent with ligands actively produced by organisms in response to Cu induced stress. The recruitment of benthic invertebrates was modified at the high-Cu location. Taxonomic groups usually considered robust to pollution were restricted to this site (e.g. barnacles) or were the most abundant taxa present (e.g. foraminifera). Our results demonstrate that Cu-contaminated sediments can impose a persistent point source of Cu pollution in high-energy reef environments, with the potential to modify the composition and recovery of biological communities.
      Date
      2019
      Type
      Journal Article
      Publisher
      Nature Publishing Group
      Rights
      This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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