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Individual-based genetic analyses support asexual hydrochory dispersal in Zostera noltei

2018-08Journal article Open Access
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dc.contributor.authorBerković, Buga
dc.contributor.authorCoelho, Nelson
dc.contributor.authorGouveia, Licínia
dc.contributor.authorSerrao, Ester
dc.contributor.authorAlberto, Filipe
dc.date.accessioned2018-12-07T14:52:38Z
dc.date.available2018-12-07T14:52:38Z
dc.date.issued2018-08
dc.description.abstractDispersal beyond the local patch in clonal plants was typically thought to result from sexual reproduction via seed dispersal. However, evidence for the separation, transport by water, and re-establishment of asexual propagules (asexual hydrochory) is mounting suggesting other important means of dispersal in aquatic plants. Using an unprecedented sampling size and microsatellite genetic identification, we describe the distribution of seagrass clones along tens of km within a coastal lagoon in Southern Portugal. Our spatially explicit individual-based sampling design covered 84 km(2) and collected 3 185 Zostera noltei ramets from 803 sites. We estimated clone age, assuming rhizome elongation as the only mechanism of clone spread, and contrasted it with paleo-oceanographic sea level change. We also studied the association between a source of disturbance and the location of large clones. A total of 16 clones were sampled more than 10 times and the most abundant one was sampled 59 times. The largest distance between two samples from the same clone was 26.4 km and a total of 58 and 10 clones were sampled across more than 2 and 10 km, respectively. The number of extremely large clone sizes, and their old ages when assuming the rhizome elongation as the single causal mechanism, suggests other processes are behind the span of these clones. We discuss how the dispersal of vegetative fragments in a stepping-stone manner might have produced this pattern. We found higher probabilities to sample large clones away from the lagoon inlet, considered a source of disturbance. This study corroborates previous experiments on the success of transport and re-establishment of asexual fragments and supports the hypothesis that asexual hydrochory is responsible for the extent of these clones.
dc.description.sponsorshipFundacao para a Ciencia e a Tecnologia, Portugal [PTDC/MAR/099887/2008]; Fundacao para a Ciencia e Tecnologia [SFRH/BD/68570/2010]
dc.identifier.doi10.1371/journal.pone.0199275
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11140
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library Science
dc.subjectSeagrass Cymodocea-Nodosa
dc.subjectVegetative Fragments
dc.subjectRia-Formosa
dc.subjectHalophila-Johnsonii
dc.subjectPosidonia-Oceanica
dc.subjectMarine Macrophyte
dc.subjectPlant Dispersal
dc.subjectSeed Dispersal
dc.subjectLife-History
dc.subjectReproduction
dc.titleIndividual-based genetic analyses support asexual hydrochory dispersal in Zostera noltei
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F099887%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F68570%2F2010/PT
oaire.citation.issue8
oaire.citation.startPagee0199275
oaire.citation.titlePlos One
oaire.citation.volume13
oaire.fundingStream3599-PPCDT
oaire.fundingStreamSFRH
person.familyNameBerković
person.familyNameCoelho
person.familyNameGouveia
person.familyNameSerrao
person.givenNameBuga
person.givenNameNelson
person.givenNameLicínia
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0002-5240-5339
person.identifier.orcid0000-0002-8331-5889
person.identifier.orcid0000-0002-5531-8476
person.identifier.orcid0000-0003-1316-658X
person.identifier.ridM-3464-2013
person.identifier.ridM-7650-2013
person.identifier.scopus-author-id26029686700
person.identifier.scopus-author-id7004093604
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
rcaap.rightsopenAccess
rcaap.typearticle
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