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Response of Benthic Foraminifera to organic matter quantity and quality and bioavailable concentrations of metals in Aveiro Lagoon (Portugal)

2015-02Journal article Open Access
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dc.contributor.authorMartins, Maria Helena
dc.contributor.authorSilva, Frederico
dc.contributor.authorLaut, Lazaro L. M.
dc.contributor.authorFrontalini, Fabrizio
dc.contributor.authorClemente, Iara M. M. M.
dc.contributor.authorMiranda, Paulo
dc.contributor.authorFigueira, Rubens
dc.contributor.authorSousa, Silvia H. M.
dc.contributor.authorAlveirinho Dias, João M.
dc.date.accessioned2018-12-07T14:53:02Z
dc.date.available2018-12-07T14:53:02Z
dc.date.issued2015-02
dc.description.abstractThis work analyses the distribution of living benthic foraminiferal assemblages of surface sediments in different intertidal areas of Ria de Aveiro (Portugal), a polihaline and anthropized coastal lagoon. The relationships among foraminiferal assemblages in association with environmental parameters (temperature, salinity, Eh and pH), grain size, the quantity and quality of organic matter (enrichment in carbohydrates, proteins and lipids), pollution caused by metals, and mineralogical data are studied in an attempt to identify indicators of adaptability to environmental stress. In particular, concentrations of selected metals in the surficial sediment are investigated to assess environmental pollution levels that are further synthetically parameterised by the Pollution Load Index (PLI). The PLI variations allowed the identification of five main polluted areas. Concentrations of metals were also analysed in three extracted phases to evaluate their possible mobility, bioavailability and toxicity in the surficial sediment. Polluted sediment in the form of both organic matter and metals can be found in the most confined zones. Whereas enrichment in organic matter and related biopolymers causes an increase in foraminifera density, pollution by metals leads to a decline in foraminiferal abundance and diversity in those zones. The first situation may be justified by the existence of opportunistic species (with high reproduction rate) that can live in low oxic conditions. The second is explained by the sensitivity of some species to pressure caused by metals. The quality of the organic matter found in these places and the option of a different food source should also explain the tolerance of several species to pollution caused by metals, despite their low reproductive rate in the most polluted areas. In this study, species that are sensitive and tolerant to organic matter and metal enrichment are identified, as is the differential sensitivity/tolerance of some species to metals enrichment.
dc.description.sponsorshipCNPq [401803/2010-4]; [PEst-OE/CTE/UI4035/2014]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1371/journal.pone.0118077
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11325
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library of Science
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectEstuarine Tidal Channel
dc.subjectHeavy-metals
dc.subjectCoastal sediments
dc.subjectContinental-shelf
dc.subjectWater-quality
dc.subjectTrophic State
dc.subjectAdriatic Sea
dc.subjectRia
dc.subjectPollution
dc.subjectMercury
dc.titleResponse of Benthic Foraminifera to organic matter quantity and quality and bioavailable concentrations of metals in Aveiro Lagoon (Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FCTE%2FUI4035%2F2014/PT
oaire.citation.issue2
oaire.citation.startPagee0118077
oaire.citation.titlePLoS ONE
oaire.citation.volume10
oaire.fundingStream5876
person.familyNameMartins
person.familyNameDias
person.givenNameMaria Helena
person.givenNameJoao
person.identifier.ciencia-id1F1A-06A4-F930
person.identifier.orcid0000-0001-5964-4482
person.identifier.orcid0000-0002-6271-6501
person.identifier.scopus-author-id57194832041
person.identifier.scopus-author-id7201934507
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication571d4b96-de1d-4714-9fba-941c2d9a2a2d
relation.isAuthorOfPublicationad92aacb-15e6-4f18-9d1f-e12f8e14c985
relation.isAuthorOfPublication.latestForDiscovery571d4b96-de1d-4714-9fba-941c2d9a2a2d
relation.isProjectOfPublication32acd392-c989-41e6-8205-060a4927a3bc
relation.isProjectOfPublication.latestForDiscovery32acd392-c989-41e6-8205-060a4927a3bc

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