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Spatial and temporal dynamics of fucoid populations (Ascophyllum nodosum and Fucus serratus): A comparison between central and range edge populations

2014Journal article Open Access
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dc.contributor.authorAraujo, Rita
dc.contributor.authorSerrao, Ester A.
dc.contributor.authorSousa-Pinto, Isabel
dc.contributor.authorAberg, Per
dc.date.accessioned2018-12-07T14:53:42Z
dc.date.available2018-12-07T14:53:42Z
dc.date.issued2014
dc.description.abstractPersistence of populations at range edges relies on local population dynamics and fitness, in the case of geographically isolated populations of species with low dispersal potential. Focusing on spatial variations in demography helps to predict the long-term capability for persistence of populations across the geographical range of species' distribution. The demography of two ecological and phylogenetically close macroalgal species with different life history characteristics was investigated by using stochastic, stage-based matrix models. Populations of Ascophyllum nodosum and Fucus serratus were sampled for up to 4 years at central locations in France and at their southern range limits in Portugal. The stochastic population growth rate (lambda(s)) of A. nodosum was lower and more variable in central than in southern sites whilst for F. serratus this trend was reversed with lambda(s) much lower and more variable in southern than in central populations. Individuals were larger in central than in southern populations for both species, which was reflected in the lower transition probabilities of individuals to larger size classes and higher probability of shrinkage in the southern populations. In both central and southern populations elasticity analysis (proportional sensitivity) of population growth rate showed that fertility elements had a small contribution to lambda(s) that was more sensitive to changes in matrix transitions corresponding to survival. The highest elasticities were found for loop transitions in A. nodosum and for growth to larger size classes in F. serratus. Sensitivity analysis showed high selective pressure on individual growth for both species at both locations. The results of this study highlight the deterministic role of species-specific life-history traits in population demography across the geographical range of species. Additionally, this study demonstrates that individuals' life-transitions differ in vulnerability to environmental variability and shows the importance of vegetative compared to reproductive stages for the long-term persistence of populations.
dc.description.sponsorshipPortuguese Foundation for Science and Technology (FCT) [SFRH/BPD/75843/2011]; European Regional Development Fund (ERDF) through the COMPETE - Operational Competitiveness Programme; FCT [Pest-CIMAR LA 0015/2013, EXCL/AAG-GLO/0661/2012]
dc.identifier.doi10.1371/journal.pone.0092177
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10400.1/11645
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPublic Library Science
dc.relationDETERMINANT FACTORS FOR POPULATIONS PERSISTENCE AT RANGE MARGINS
dc.relation2013 - Strategic Project
dc.relationExtant or extinct tipping points - climate changes drive genetic diversity and dynamics of range edge populations as evolutionary hotspots
dc.subjectLife-History
dc.subjectSpecies Borders
dc.subjectClimate-Change
dc.subjectMarginal Populations
dc.subjectSensitivity-Analysis
dc.subjectReproductive Effort
dc.subjectSouthern Limit
dc.subjectMatrix Models
dc.subjectSeaweed
dc.subjectPhaeophyceae
dc.titleSpatial and temporal dynamics of fucoid populations (Ascophyllum nodosum and Fucus serratus): A comparison between central and range edge populations
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDETERMINANT FACTORS FOR POPULATIONS PERSISTENCE AT RANGE MARGINS
oaire.awardTitle2013 - Strategic Project
oaire.awardTitleExtant or extinct tipping points - climate changes drive genetic diversity and dynamics of range edge populations as evolutionary hotspots
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F75843%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6820 - DCRRNI ID/PEst-C%2FMAR%2FLA0015%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/EXCL%2FAAG-GLO%2F0661%2F2012/PT
oaire.citation.startPagee92177
oaire.citation.titlePlos One
oaire.citation.volume9
oaire.fundingStream6820 - DCRRNI ID
oaire.fundingStream3599-PPCDT
person.familyNameAraujo
person.familyNameSerrao
person.givenNameRita
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0001-8062-972X
person.identifier.orcid0000-0003-1316-658X
person.identifier.ridI-2964-2015
person.identifier.scopus-author-id24733696000
person.identifier.scopus-author-id7004093604
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a CiĂȘncia e a Tecnologia
project.funder.nameFundação para a CiĂȘncia e a Tecnologia
project.funder.nameFundação para a CiĂȘncia e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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