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Eurya stigmosa (Theaceae), a new and extinct record for the Calabrian stage of Madeira Island (Portugal): 40Ar/39Ar dating, palaeoecological and oceanic island palaeobiogeographical implications

2019Journal article Open access
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dc.contributor.authorGóis-Marques, Carlos A.
dc.contributor.authorMitchell, Ria L.
dc.contributor.authorNascimento, Lea de
dc.contributor.authorFernández-Palacios, José María
dc.contributor.authorMadeira, José
dc.contributor.authorSequeira, Miguel Menezes de
dc.date.accessioned2022-03-25T14:12:25Z
dc.date.available2022-03-25T14:12:25Z
dc.date.issued2019
dc.description.abstractThe general dynamic model of oceanic island biogeography (GDM) predicts the immigration, speciation and extinction of terrestrial biota through geological time on oceanic islands. Additionally, the glacial sensitive model of island biogeography (GSM) also predicts extinction due to eustatic and climate change within islands. However, well-documented and natural pre-Holocene plant extinctions are almost unknown for oceanic islands worldwide. To test these predictions, we have sampled the Early Pleistocene Porto da Cruz lacustrine and fluvial sediments for plant fossils that could confirm the GDM and GSM extinction predictions. Additionally, two new 40Ar/39Ar geochronological analyses were per formed, constraining the age of the sediments to 1.3 Ma (Calabrian). Among the fossils, Eurya stigmosa (R.Ludw.) Mai (Theaceae) seeds were recognised and studied by scanning electron microscopy (SEM). E. stigmosa is the first report of a natural (non-anthropogenic) extinct plant in the fossil record for Madeira Island, and for an oceanic island, confirming the GDM and GSM predictions. Eurya spp. palae obiogeography indicates wider distribution in Europe until the end of the Pliocene (2.58 Ma), becoming extirpated to small refugia and extinct thereafter. The Madeiran record expands the formerly unknown presence of E. stigmosa to the Macaronesian realm. The new dating of the deposit at 1.3 Ma (Calabrian) means that E. stigmosa in Madeira was already in a refugium. The extinction in Madeira is most probably a combination of island ontogeny and climate change due to Pleistocene glaciations. The palaeoecological role of this extinct shrub or tree is currently unknown, but it was a probably an element of the Madeiran laurel forest, as this community was already present in Madeira at least 1.8 My ago. This new information corroborates the predictive power of GDM and GSM and adds a new view on the importance of studying oceanic island palaeobotany, specially palaeocarpofloras.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGóis-Marques, C. A., Mitchell, R. L., de Nascimento, L., Fernández-Palacios, J. M., Madeira, J., & Sequeira, M. M. (2019). Eurya stigmosa (Theaceae), a new and extinct record for the Calabrian stage of Madeira Island (Portugal): 40Ar/39Ar dating, palaeoecological and oceanic island palaeobiogeographical implications. Quaternary Science Reviews, 206, 129-140. https://doi.org/10.1016/j.quascirev.2019.01.008pt_PT
dc.identifier.doi10.1016/j.quascirev.2019.01.008pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4182
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMacaronesiapt_PT
dc.subjectMadeira Island (Portugal)pt_PT
dc.subjectPlant extinctionpt_PT
dc.subject40Ar/39Ar geochronologypt_PT
dc.subjectGDMpt_PT
dc.subjectGSMpt_PT
dc.subjectPalaeocarpologypt_PT
dc.subjectIsland refugiumpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleEurya stigmosa (Theaceae), a new and extinct record for the Calabrian stage of Madeira Island (Portugal): 40Ar/39Ar dating, palaeoecological and oceanic island palaeobiogeographical implicationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage140pt_PT
oaire.citation.startPage129pt_PT
oaire.citation.titleQuaternary Science Reviewspt_PT
oaire.citation.volume206pt_PT
person.familyNameGóis-Marques
person.familyNameFernández-Palacios
person.familyNamede Oliveira Madeira
person.familyNameSequeira
person.givenNameCarlos A.
person.givenNameJosé María
person.givenNameJosé Eduardo
person.givenNameMiguel
person.identifier.ciencia-id911F-F979-E69D
person.identifier.ciencia-id191B-3EB0-B665
person.identifier.ciencia-idCA1C-1AC6-6346
person.identifier.orcid0000-0002-0255-7641
person.identifier.orcid0000-0001-9741-6878
person.identifier.orcid0000-0003-4729-8994
person.identifier.orcid0000-0001-9728-465X
person.identifier.ridH-3218-2015
person.identifier.ridH-2054-2015
person.identifier.scopus-author-id56711991000
person.identifier.scopus-author-id6603739965
person.identifier.scopus-author-id35101791200
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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