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Ecological zonation of benthic foraminifera in the lower Guadiana Estuary (southeastern Portugal)

2015-01Journal article Open access
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dc.contributor.authorCamacho, Sarita
dc.contributor.authorMoura, Delminda
dc.contributor.authorConnor, Simon
dc.contributor.authorScott, David
dc.contributor.authorBoski, T.
dc.date.accessioned2018-12-07T14:53:07Z
dc.date.available2018-12-07T14:53:07Z
dc.date.issued2015-01
dc.description.abstractThe present study analyzes the spatial distribution and seasonal distribution of live benthic foraminiferal communities in the estuary of Guadiana, the fourth largest river on the Iberian Peninsula, and establishes, through statistical analysis, their relationships with a series of environmental parameters. Forty-four superficial sediment samples were collected along distance-to-sea and elevation gradients in the winter and summer of 2010. Fifty-three foraminifera species were identified along the intertidal margins of the estuary. Foraminiferal distribution reflected seasonal variation of environmental factors, whose relative importance varied according to species tolerances. Elevation in relation to mean sea level appeared to be the most important parameter controlling foraminiferal distribution, probably because it combines the effects of a series of other variables (i.e. organic matter, sediment texture, pH and temperature). In the highest marsh areas, where environmental conditions approach survival thresholds, only some agglutinated species are able to survive. In the lower intertidal zone, where subaerial exposure is diminished and environmental conditions are generally less variable, more diverse faunas, mainly composed of calcareous species, prevail. During winter, when fluvial discharge peaks, agglutinated species represent more than 80% of the total individuals. In summer, when marine conditions prevail, calcareous species become more competitive, increase their densities and expand into higher marsh zones and estuarine upper reaches. In the estuary, three different foraminiferal assemblages are distinguished: i) Miliammina fusca assemblage, which dominates in unvegetated areas of the lower marsh and tidal flats of the mid-upper estuary; ii)Jadammina macrescens assemblage, which dominates in the highest marsh areas in the lower estuary; and iii) Ammonia aberdoveyensis assemblage, which dominates the areas of low marsh and tidal flats of the lower estuary. (C) 2014 Elsevier B.V. All rights reserved.
dc.description.sponsorshipPortuguese Foundation for Science and Technology (FCT) [SFRH/BD/28265/2006]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.marmicro.2014.10.004
dc.identifier.issn0377-8398
dc.identifier.issn1872-6186
dc.identifier.urihttp://hdl.handle.net/10400.1/11359
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier Science Bv
dc.relationMODELO DE ZONAÇÃO ECOLÓGICA DOS FORAMINÍFEROS BENTÓNICOS E TECAMEBAS DO ESTUÁRIO DO RIO GUADIANA E SUA APLICAÇÃO NA RECONSTRUÇÃO PALEOAMBIENTAL
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectSalt-Marsh Foraminifera
dc.subjectSea-level rise
dc.subjectParalic environments
dc.subjectContinental-shelf
dc.subjectGreat-marshes
dc.subjectSw-Europe
dc.subjectAssemblages
dc.subjectRiver
dc.subjectUk
dc.subjectMassachusetts
dc.titleEcological zonation of benthic foraminifera in the lower Guadiana Estuary (southeastern Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMODELO DE ZONAÇÃO ECOLÓGICA DOS FORAMINÍFEROS BENTÓNICOS E TECAMEBAS DO ESTUÁRIO DO RIO GUADIANA E SUA APLICAÇÃO NA RECONSTRUÇÃO PALEOAMBIENTAL
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F28265%2F2006/PT
oaire.citation.endPage18
oaire.citation.startPage1
oaire.citation.titleMarine Micropaleontology
oaire.citation.volume114
person.familyNameCamacho
person.familyNameMoura
person.familyNameConnor
person.familyNameBoski
person.givenNameSarita
person.givenNameDelminda
person.givenNameSimon
person.givenNameTomasz
person.identifier1096134
person.identifier.ciencia-id9B1A-D006-F736
person.identifier.ciencia-id171B-8713-654E
person.identifier.ciencia-id1416-B317-51D1
person.identifier.orcid0000-0002-2986-7156
person.identifier.orcid0000-0002-0952-6805
person.identifier.orcid0000-0001-5685-2390
person.identifier.orcid0000-0003-2462-4179
person.identifier.ridE-9559-2015
person.identifier.scopus-author-id15048413000
person.identifier.scopus-author-id7102766997
person.identifier.scopus-author-id6602267486
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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