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dc.contributor.authorTrannum, Hilde C
dc.contributor.authorPedersen, Kristine B.
dc.contributor.authorRenaud, Paul E
dc.contributor.authorChristensen, Guttorm N.
dc.contributor.authorEvenset, Anita
dc.date.accessioned2023-08-28T11:38:18Z
dc.date.available2023-08-28T11:38:18Z
dc.date.issued2022-12-22
dc.description.abstractDeposition of large volumes of mine tailings takes place in several Norwegian fjords, but the impacts on marine ecosystems have received relatively little scientific attention. At a 40 + − year old tailing deposition area for a copper mine in the Arctic fjord Repparfjorden, we investigated both short-term colonization of mine tailingscontaminated sediments through a field experiment, and the present faunal state in the old deposit area. Copper-concentrations at the old deposition site were still high (up to 291 mg/kg dry weight (dw)), and exceeded the Norwegian environmental-quality threshold (84 mg/kg dw). Furthermore, copper was identified as a significant structuring factor for the fauna in the fjord, although faunal diversity was relatively high and the community not severely disturbed. In the colonization experiment, experimental boxes filled with defaunated sediment capped with mine tailings were subject to colonization for 15 months. Benthic macrofaunal communities were successfully established in all boxes, but the boxes with tailings showed lower species richness, abundance and biomass than the controls. Mine tailings continue to have local impacts on seafloor communities decades after deposition, and even low levels of metal-rich sediments can affect faunal recruitment. These results have implications for submarine deposition of mining waste and the impacts they have on coastal ecosystems.en_US
dc.identifier.citationTrannum HC, Pedersen KB, Renaud PE, Christensen GN, Evenset A. Recolonization and recovery of an Arctic benthic community subject to mine-tailings deposits. Journal of Sea Research. 2023;191:1-13en_US
dc.identifier.cristinIDFRIDAID 2121993
dc.identifier.doi10.1016/j.seares.2022.102327
dc.identifier.issn1385-1101
dc.identifier.issn1873-1414
dc.identifier.urihttps://hdl.handle.net/10037/30478
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalJournal of Sea Research
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleRecolonization and recovery of an Arctic benthic community subject to mine-tailings depositsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)