Assessment of the ecotoxicity of urban estuarine sediment using benthic and pelagic copepod bioassays.

Show simple item record Charry, Maria P en Keesing, Vaughan en Costello, Mark en Tremblay, Louis en 2018-10-16T19:23:49Z en 2018-01 en
dc.identifier.issn 2167-8359 en
dc.identifier.uri en
dc.description.abstract Urban estuarine sediments are sinks to a range of contaminants of anthropogenic origin, and a key challenge is to characterize the risk of these compounds to receiving environments. In this study, the toxicity of urban estuarine sediments was tested using acute and chronic bioassays in the benthic harpacticoid Quinquelaophonte sp., and in the planktonic calanoid Gladioferens pectinatus, two New Zealand copepod species. The sediment samples from the estuary tributary sites significantly impacted reproduction in Quinquelaophonte sp. However, results from one of the estuary sites were not significantly different to those from the tributaries sites, suggesting that chemicals other than trace metals, polycyclic aromatic hydrocarbons and ammonia may be the causative stressors. Sediment elutriate samples had significant effects on reproductive endpoints in G. pectinatus, and on the induction of DNA damage in cells, as shown by the comet assay. The results indicate that sediment contamination at the Ahuriri Estuary has the potential to impact biological processes of benthic and pelagic organisms. The approach used provides a standardized methodology to assess the toxicity of estuarine sediments. en
dc.format.medium Electronic-eCollection en
dc.language eng en
dc.relation.ispartofseries PeerJ en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
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dc.title Assessment of the ecotoxicity of urban estuarine sediment using benthic and pelagic copepod bioassays. en
dc.type Journal Article en
dc.identifier.doi 10.7717/peerj.4936 en
pubs.begin-page e4936 en
pubs.volume 6 en
dc.rights.holder Copyright: The authors en
pubs.publication-status Published en
dc.rights.accessrights en
pubs.subtype research-article en
pubs.subtype Journal Article en
pubs.elements-id 744288 en Science en Biological Sciences en School of Environment en
dc.identifier.eissn 2167-8359 en
pubs.record-created-at-source-date 2018-06-06 en
pubs.dimensions-id 29868297 en

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