Palaeoclimatic conditions in the Mediterranean explain genetic diversity of Posidonia oceanica seagrass meadows

Handle URI:
http://hdl.handle.net/10754/624884
Title:
Palaeoclimatic conditions in the Mediterranean explain genetic diversity of Posidonia oceanica seagrass meadows
Authors:
Chefaoui, Rosa M. ( 0000-0001-5031-4858 ) ; Duarte, Carlos M. ( 0000-0002-1213-1361 ) ; Serrão, Ester A.
Abstract:
Past environmental conditions in the Mediterranean Sea have been proposed as main drivers of the current patterns of distribution of genetic structure of the seagrass Posidonia oceanica, the foundation species of one of the most important ecosystems in the Mediterranean Sea. Yet, the location of cold climate refugia (persistence regions) for this species during the Last Glacial Maximum (LGM) is not clear, precluding the understanding of its biogeographical history. We used Ecological Niche Modelling together with existing phylogeographic data to locate Pleistocene refugia in the Mediterranean Sea and to develop a hypothetical past biogeographical distribution able to explain the genetic diversity presently found in P. oceanica meadows. To do that, we used an ensemble approach of six predictive algorithms and two Ocean General Circulation Models. The minimum SST in winter and the maximum SST in summer allowed us to hindcast the species range during the LGM. We found separate glacial refugia in each Mediterranean basin and in the Central region. Altogether, the results suggest that the Central region of the Mediterranean Sea was the most relevant cold climate refugium, supporting the hypothesis that long-term persistence there allowed the region to develop and retain its presently high proportion of the global genetic diversity of P. oceanica.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Chefaoui RM, Duarte CM, Serrão EA (2017) Palaeoclimatic conditions in the Mediterranean explain genetic diversity of Posidonia oceanica seagrass meadows. Scientific Reports 7. Available: http://dx.doi.org/10.1038/s41598-017-03006-2.
Publisher:
Springer Nature
Journal:
Scientific Reports
Issue Date:
26-May-2017
DOI:
10.1038/s41598-017-03006-2
Type:
Article
ISSN:
2045-2322
Sponsors:
We are grateful to Laure Castaing for her help in the initial data collection. R.M.C. was supported by the postdoctoral fellowship SFRH/BPD/85040/2012 from the Fundação para a Ciência e a Tecnologia (FCT, Portugal). We acknowledge FCT funding by “UID/Multi/04326/2013”, MARFOR (FCT-BIODIVERSA/004/2015) and the Pew foundation (USA).
Additional Links:
http://www.nature.com/articles/s41598-017-03006-2
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorChefaoui, Rosa M.en
dc.contributor.authorDuarte, Carlos M.en
dc.contributor.authorSerrão, Ester A.en
dc.date.accessioned2017-06-08T09:42:44Z-
dc.date.available2017-06-08T09:42:44Z-
dc.date.issued2017-05-26en
dc.identifier.citationChefaoui RM, Duarte CM, Serrão EA (2017) Palaeoclimatic conditions in the Mediterranean explain genetic diversity of Posidonia oceanica seagrass meadows. Scientific Reports 7. Available: http://dx.doi.org/10.1038/s41598-017-03006-2.en
dc.identifier.issn2045-2322en
dc.identifier.doi10.1038/s41598-017-03006-2en
dc.identifier.urihttp://hdl.handle.net/10754/624884-
dc.description.abstractPast environmental conditions in the Mediterranean Sea have been proposed as main drivers of the current patterns of distribution of genetic structure of the seagrass Posidonia oceanica, the foundation species of one of the most important ecosystems in the Mediterranean Sea. Yet, the location of cold climate refugia (persistence regions) for this species during the Last Glacial Maximum (LGM) is not clear, precluding the understanding of its biogeographical history. We used Ecological Niche Modelling together with existing phylogeographic data to locate Pleistocene refugia in the Mediterranean Sea and to develop a hypothetical past biogeographical distribution able to explain the genetic diversity presently found in P. oceanica meadows. To do that, we used an ensemble approach of six predictive algorithms and two Ocean General Circulation Models. The minimum SST in winter and the maximum SST in summer allowed us to hindcast the species range during the LGM. We found separate glacial refugia in each Mediterranean basin and in the Central region. Altogether, the results suggest that the Central region of the Mediterranean Sea was the most relevant cold climate refugium, supporting the hypothesis that long-term persistence there allowed the region to develop and retain its presently high proportion of the global genetic diversity of P. oceanica.en
dc.description.sponsorshipWe are grateful to Laure Castaing for her help in the initial data collection. R.M.C. was supported by the postdoctoral fellowship SFRH/BPD/85040/2012 from the Fundação para a Ciência e a Tecnologia (FCT, Portugal). We acknowledge FCT funding by “UID/Multi/04326/2013”, MARFOR (FCT-BIODIVERSA/004/2015) and the Pew foundation (USA).en
dc.publisherSpringer Natureen
dc.relation.urlhttp://www.nature.com/articles/s41598-017-03006-2en
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titlePalaeoclimatic conditions in the Mediterranean explain genetic diversity of Posidonia oceanica seagrass meadowsen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalScientific Reportsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionCCMAR - Centro de Ciências do Mar, CIMAR Laboratório Associado, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal. rosa.chef@gmail.com.en
dc.contributor.institutionCCMAR - Centro de Ciências do Mar, CIMAR Laboratório Associado, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal.en
kaust.authorDuarte, Carlos M.en
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