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Elevated trace elements in sediments and seagrasses at CO2 seeps

2020Journal article Open access
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dc.contributor.authorMishra, Amrit Kumar
dc.contributor.authorSantos, Rui
dc.contributor.authorHall-Spencer, Jason
dc.date.accessioned2020-02-17T13:20:08Z
dc.date.available2020-02-17T13:20:08Z
dc.date.issued2020
dc.description.abstractSeagrasses often occur around shallow marine CO2 seeps, allowing assessment of trace metal accumulation. Here, we measured Cd, Cu, Hg, Ni, Pb and Zn levels at six CO2 seeps and six reference sites in the Mediterranean. Some seep sediments had elevated metal concentrations; an extreme example was Cd which was 43x more concentrated at a seep site than its corresponding reference site. Three seeps had metal levels that were predicted to adversely affect marine biota, namely Vulcano (for Hg), Ischia (for Cu) and Paleochori (for Cd and Ni). There were higher-than-sediment levels of Zn and Ni in Posidonia oceanica and of Zn in Cymodocea nodosa, particularly in roots. High levels of Cu were found in Ischia seep sediments, yet seagrass was abundant there, and the plants contained low levels of Cu. Differences in bioavailability and toxicity of trace elements helps explain why seagrasses can be abundant at some CO2 seeps but not at others.pt_PT
dc.description.sponsorshipFunding Agency MARES 'Future Oceans' project MARES _12_14 MARES Grant Ghent University FPA 2011-0016 Portuguese Foundation for Science and Technology UID/Muli/04326/2019pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.marenvres.2019.104810pt_PT
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/10400.1/13518
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBioaccumulationpt_PT
dc.subjectBioavailabilitypt_PT
dc.subjectOcean acidificationpt_PT
dc.subjectPosidonia oceanicapt_PT
dc.subjectCymodocea nodosapt_PT
dc.titleElevated trace elements in sediments and seagrasses at CO2 seepspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage104810pt_PT
oaire.citation.titleMarine Environmental Researchpt_PT
oaire.citation.volume153pt_PT
person.familyNameMISHRA
person.familyNameSantos
person.familyNameHall-Spencer
person.givenNameAMRIT KUMAR
person.givenNameRui
person.givenNameJason
person.identifier42560
person.identifier140703
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0002-9605-3865
person.identifier.orcid0000-0002-7861-4366
person.identifier.orcid0000-0002-6915-2518
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id7201375018
person.identifier.scopus-author-id6603382752
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf19d0d18-17ab-4351-82a0-2ede395cda3d
relation.isAuthorOfPublication84487ca8-404a-4584-81f0-3662c340d712
relation.isAuthorOfPublication54b02890-f813-436a-95f4-702920a61c02
relation.isAuthorOfPublication.latestForDiscoveryf19d0d18-17ab-4351-82a0-2ede395cda3d

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