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Comparative analysis of stability-genetic diversity in seagrass (Posidonia oceanica) meadows yields unexpected results

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dc.contributor.authorARNAUD-HAOND, Sophie
dc.contributor.authorMarbà, N.
dc.contributor.authorDiaz-Almela, E.
dc.contributor.authorSerrão, Ester
dc.contributor.authorDuarte, C. M.
dc.date.accessioned2014-06-03T13:50:11Z
dc.date.available2014-06-03T13:50:11Z
dc.date.issued2010
dc.date.updated2014-05-21T13:13:30Z
dc.description.abstractThe diversity–stability relationship is the subject of a long-standing debate in ecology, but the genetic component of diversity has seldom been explored. In this study, we analyzed the interplay between genetic diversity and demographic responses to environmental pressures. This analysis included 30 meadows formed by the Mediterranean endemic seagrass, Posidonia oceanica, showing a wide range of population dynamics ranging from a near equilibrium state to steep decline due to strong environmental pressures close to aquaculture installations. Our results show that sedimentation rates are much better predictors of mortality than clonal or genetic components. An unexpected positive trend was observed between genotypic diversity and mortality, along with a negative relationship between allelic richness and net population growth. Yet such trends disappeared when excluding the most extreme cases of disturbance and mortality, suggesting the occurrence of a threshold below which no relationship exists. These results contrast with the positive relationship between genotypic diversity and resistance or resilience observed in previous manipulative experiments on seagrass. We discuss the reasons for this discrepancy, including the difficulties in designing experiments reflecting the complexity of natural meadows.por
dc.identifier.citationArnaud-Haond, S.; Marbà, N.; Diaz-Almela, E.; Serrão, E.A.; Duarte, C.M. Comparative analysis of stability-genetic diversity in seagrass (Posidonia oceanica) meadows yields unexpected results, Estuaries and Coasts, 33, 4, 878-889, 2010.por
dc.identifier.doihttp://dx.doi.org/10.1007/s12237-009-9238-9
dc.identifier.issn1559-2723
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4167
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.subjectSeagrasspor
dc.subjectDemographypor
dc.subjectClonalitypor
dc.subjectGenetic richnesspor
dc.subjectDiversity–stabilitypor
dc.subjectPosidonia oceanicapor
dc.titleComparative analysis of stability-genetic diversity in seagrass (Posidonia oceanica) meadows yields unexpected resultspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage889por
oaire.citation.issue4por
oaire.citation.startPage878por
oaire.citation.titleEstuaries and Coastspor
oaire.citation.volume33por
person.familyNameARNAUD-HAOND
person.familyNameSerrao
person.givenNameSophie
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5A15-FF67-4075
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0001-5814-8452
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id6602532118
person.identifier.scopus-author-id7004093604
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication2b10c79a-8ca9-4449-ba02-0c240f00d921
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery2b10c79a-8ca9-4449-ba02-0c240f00d921

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