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Natural and human-induced Holocene paleoenvironmental changes on the Guadiana shelf (northern Gulf of Cadiz)

2012Journal article Restricted access
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dc.contributor.authorMendes, Isabel
dc.contributor.authorDias, J. A.
dc.contributor.authorSchönfeld, J.
dc.contributor.authorFerreira, Óscar
dc.contributor.authorRosa, F.
dc.contributor.authorGonzalez, R.
dc.contributor.authorLobo, F. J.
dc.date.accessioned2017-11-21T18:51:32Z
dc.date.available2017-11-21T18:51:32Z
dc.date.issued2012
dc.description.abstractThree contrasting sedimentary environments on the continental shelf off the Guadiana River (northern Gulf of Cadiz) were integrated in a chronological framework and analysed in terms of sedimentology and benthic foraminiferal assemblages to understand the Holocene paleoenvironmental evolution. The analysed environments differ in terms of their depositional regimes and benthic foraminiferal assemblages. However, a dominant fluvial origin of the sand fraction was observed in all three environments. Holocene sedimentary processes were mainly controlled by natural (sea level changes and climate variations) and human-induced processes (e.g. deforestation, agriculture) along four evolutionary stages. The three older stages were mainly influenced by natural processes, such as sea level variations and fluvial inputs, whereas the most recent stage reflects a combination of climatic- and human-induced processes. A deepening of sedimentary environments related to a period of rapid sea level rise, strongly influenced by river discharges occurred from c. 11,500 to c. 10,000 cal. yr BP. A reduction in sediment export to the shelf, as a result of the continuous and rapid sea level rise and enhanced estuary infilling reflects the second stage, from c. 10,000 to c. 5000 cal. yr BP. The beginning of the third stage, from c. 5000 to c. 1500–1000 cal. yr BP, is marked by a sea-level slowdown and the relatively stable climate and environmental conditions. The fourth stage, from c. 1500–1000 cal. yr BP to Recent times, reflects the intensification of human-induced processes and climatic variability in the Guadiana River basin. This stage also reflects modern depositional conditions, with the formation of a proximal prodeltaic wedge and a distal muddy body.pt_PT
dc.description.sponsorshipPDCTM/P/MAR/15289/1999
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMendes, I., Dias, J.A., Schönfeld, J., Ferreira, Ó., Rosa, F., Gonzalez, R., Lobo, J.F., 2012. Natural and human-induced Holocene paleoenvironmental changes, on the Guadiana shelf (northern Gulf of Cadiz). The Holocene, 22(9), 1011-1024.pt_PT
dc.identifier.doi10.1177/0959683612437867pt_PT
dc.identifier.issn0959-6836
dc.identifier.otherAUT: OFE00989;
dc.identifier.urihttp://hdl.handle.net/10400.1/10199
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSAGE Publicationspt_PT
dc.relationImpact of climatic and anthopic variations on the Northern continental shelf, Gulf of Cadiz
dc.relationClimate changes from isotopic records during the Holocene in South-western Iberia (CIRCO)
dc.relationVARIABILIDADE CLIMÁTICA E SEDIMENTAÇÃO RECENTE NA PLATAFORMA CONTINENTAL SOB INFLUENCIA DO RIO GUADIANA
dc.relation.publisherversionhttp://journals.sagepub.com/doi/abs/10.1177/0959683612437867pt_PT
dc.subjectAnthropogenic impactpt_PT
dc.subjectBenthic Foraminiferapt_PT
dc.subjectClimate changept_PT
dc.subjectContinental shelfpt_PT
dc.subjectGulf of Cadizpt_PT
dc.subjectHolocenept_PT
dc.titleNatural and human-induced Holocene paleoenvironmental changes on the Guadiana shelf (northern Gulf of Cadiz)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleImpact of climatic and anthopic variations on the Northern continental shelf, Gulf of Cadiz
oaire.awardTitleClimate changes from isotopic records during the Holocene in South-western Iberia (CIRCO)
oaire.awardTitleVARIABILIDADE CLIMÁTICA E SEDIMENTAÇÃO RECENTE NA PLATAFORMA CONTINENTAL SOB INFLUENCIA DO RIO GUADIANA
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FCLI%2F60192%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCLI%2F66393%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F18342%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F72869%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F46020%2F2008/PT
oaire.citation.endPage1024pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage1011pt_PT
oaire.citation.titleHolocenept_PT
oaire.citation.volume22pt_PT
oaire.fundingStreamPOCI
oaire.fundingStream3599-PPCDT
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
person.familyNameMendes
person.familyNameFerreira
person.givenNameIsabel Maria de Paiva Pinto
person.givenNameÓscar
person.identifier.ciencia-id5C15-242C-FDC0
person.identifier.ciencia-id1F1C-DF44-94C9
person.identifier.orcid0000-0001-7004-7910
person.identifier.orcid0000-0001-9975-0036
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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