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Discerning natural and anthropogenic organic matter inputs to salt marsh sediments of Ria Formosa lagoon (South Portugal)

2020-08Journal article Open Access
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dc.contributor.authorKumar, Mukesh
dc.contributor.authorBoski, T.
dc.contributor.authorGonzalez-Vila, Francisco J.
dc.contributor.authorde la Rosa, Jose M.
dc.contributor.authorGonzalez-Perez, Jose A.
dc.date.accessioned2021-06-24T11:35:35Z
dc.date.available2021-06-24T11:35:35Z
dc.date.issued2020-08
dc.description.abstractSedimentary organic matter (OM) origin and molecular composition provide useful information to understand carbon cycling in coastal wetlands. Core sediments from threors' Contributionse transects along Ria Formosa lagoon intertidal zone were analysed using analytical pyrolysis (Py-GC/MS) to determine composition, distribution and origin of sedimentary OM. The distribution of alkyl compounds (alkanes, alkanoic acids and alkan-2-ones), polycyclic aromatic hydrocarbons (PAHs), lignin-derived methoxyphenols, linear alkylbenzenes (LABs), steranes and hopanes indicated OM inputs to the intertidal environment from natural-autochthonous and allochthonous-as well as anthropogenic. Several n-alkane geochemical indices used to assess the distribution of main OM sources (terrestrial and marine) in the sediments indicate that algal and aquatic macrophyte derived OM inputs dominated over terrigenous plant sources. The lignin-derived methoxyphenol assemblage, dominated by vinylguaiacol and vinylsyringol derivatives in all sediments, points to large OM contribution from higher plants. The spatial distributions of PAHs (polyaromatic hydrocarbons) showed that most pollution sources were mixed sources including both pyrogenic and petrogenic. Low carbon preference indexes (CPI > 1) for n-alkanes, the presence of UCM (unresolved complex mixture) and the distribution of hopanes (C-29-C-36) and steranes (C-27-C-29) suggested localized petroleum-derived hydrocarbon inputs to the core sediments. Series of LABs were found in most sediment samples also pointing to domestic sewage anthropogenic contributions to the sediment OM.
dc.description.sponsorshipEU Erasmus Mundus Joint Doctorate fellowship (FUECA, University of Cadiz, Spain)
dc.description.sponsorshipEUEuropean Commission [FP7-ENV-2011, 282845, FP7-534 ENV-2012, 308392]
dc.description.sponsorshipMINECO project INTERCARBON [CGL2016-78937-R]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1007/s11356-020-09235-9
dc.identifier.issn0944-1344
dc.identifier.urihttp://hdl.handle.net/10400.1/16485
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.subjectCoastal lagoon
dc.subjectAliphatic hydrocarbon
dc.subjectLignin
dc.subjectPolycyclic aromatic hydrocarbons
dc.subjectHopanes
dc.subjectSteranes
dc.subjectLinear alkylbenzenes
dc.subject.otherEnvironmental sciences & ecology
dc.titleDiscerning natural and anthropogenic organic matter inputs to salt marsh sediments of Ria Formosa lagoon (South Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage28985
oaire.citation.issue23
oaire.citation.startPage28962
oaire.citation.titleEnvironmental Science and Pollution Research
oaire.citation.volume27
person.familyNameKumar
person.familyNameBoski
person.givenNameMukesh
person.givenNameTomasz
person.identifier.ciencia-id1416-B317-51D1
person.identifier.orcid0000-0002-1685-2385
person.identifier.orcid0000-0003-2462-4179
person.identifier.scopus-author-id57201314610
person.identifier.scopus-author-id6602267486
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationd63d1013-fb1a-4110-a237-e43c45e931e1
relation.isAuthorOfPublicationa857b0c7-90ab-473b-a62e-e92b452e604d
relation.isAuthorOfPublication.latestForDiscoverya857b0c7-90ab-473b-a62e-e92b452e604d

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