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Modern relationships between microscopic charcoal in marine sediments and fire regimes on adjacent landmasses to refine the interpretation of marine paleofire records: an Iberian case study

2021Journal article Restricted access
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dc.contributor.authorGenet, Marion
dc.contributor.authorDaniau, Anne-Laure
dc.contributor.authorMouillot, Florent
dc.contributor.authorHanquiez, Vincent
dc.contributor.authorSchmidt, Sabine
dc.contributor.authorDavid, Valérie
dc.contributor.authorGeorget, Muriel
dc.contributor.authorAbrantes, Fatima
dc.contributor.authorAnschutz, Pierre
dc.contributor.authorBassinot, Franck
dc.contributor.authorBonnin, Jérome
dc.contributor.authorDennielou, Bernard
dc.contributor.authorEynaud, Frédérique
dc.contributor.authorHodell, David A.
dc.contributor.authorMulder, Thierry
dc.contributor.authorNaughton, Filipa
dc.contributor.authorRossignol, Linda
dc.contributor.authorTzedakis, Polychronis
dc.contributor.authorSánchez-Goñi, Maria Fernanda
dc.date.accessioned2021-11-10T17:10:36Z
dc.date.available2021-11-10T17:10:36Z
dc.date.issued2021
dc.description.abstractMarine microcharcoal records provide invaluable information to understand changes in biomass burning and its drivers over multiple glacial and interglacial cycles and to evaluate fire models under warmer climates than today. However, quantitative reconstructions of burnt area, fire intensity and frequency from these records need calibration studies of the current fire-microcharcoal relationship. Here, we present the analysis of microcharcoal concentration and morphology in 102 core-top sediment samples collected in the Iberian margin and the Gulf of Cadiz. We show that microcharcoal concentrations are influenced by the water depth or the distance from the river mouth. At regional scale, the mean microcharcoal concentrations and microcharcoal elongation (length to width ratio) show a marked latitudinal variation in their distribution, primarily controlled by the type of burnt vegetation in the adjacent continent. High microcharcoal concentrations in marine sediments represent rare, large and intense fires in open Mediterranean woodlands. Based on these results, the increasing trend of microcharcoal concentrations recorded since 8 ka in the well-known marine sedimentary core MD95-2042 off the Iberian margin indicates the occurrence of large and infrequent fires of high intensity due to the progressive degradation of the Mediterranean forest and the expansion of shrublands.pt_PT
dc.description.sponsorshipANR-19-CE01-0001-01
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.quascirev.2021.107148pt_PT
dc.identifier.issn0277-3791
dc.identifier.urihttp://hdl.handle.net/10400.1/17307
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMicrocharcoalpt_PT
dc.subjectMarine surface sedimentspt_PT
dc.subjectCalibrationpt_PT
dc.subjectIberian peninsulapt_PT
dc.subjectWestern europept_PT
dc.subjectFire regimept_PT
dc.subjectClimatept_PT
dc.subjectVegetationpt_PT
dc.subjectHolocenept_PT
dc.titleModern relationships between microscopic charcoal in marine sediments and fire regimes on adjacent landmasses to refine the interpretation of marine paleofire records: an Iberian case studypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage107148pt_PT
oaire.citation.titleQuaternary Science Reviewspt_PT
oaire.citation.volume270pt_PT
person.familyNameAbrantes
person.givenNameFatima
person.identifier.ciencia-id021D-CA76-20D2
person.identifier.orcid0000-0002-9110-0212
person.identifier.ridB-5985-2013
person.identifier.scopus-author-id16030759200
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication45b2d36a-1a11-4b6c-81b3-47f657904207
relation.isAuthorOfPublication.latestForDiscovery45b2d36a-1a11-4b6c-81b3-47f657904207

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