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Superficial sedimentary stocks and sources of carbon and nitrogen in coastal vegetated assemblages along a flow gradient

2019Journal article Open access
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dc.contributor.authorSantos, Rui
dc.contributor.authorDuque-Núñez, Natalia
dc.contributor.authorde los Santos, Carmen B.
dc.contributor.authorMartins, Márcio
dc.contributor.authorCarrasco, A. Rita
dc.contributor.authorVeiga-Pires, Cristina
dc.date.accessioned2019-04-02T14:26:29Z
dc.date.available2019-04-02T14:26:29Z
dc.date.issued2019
dc.description.abstractCoastal vegetated ecosystems are major organic carbon (OC) and total nitrogen (TN) sinks, but the mechanisms that regulate their spatial variability need to be better understood. Here we assessed how superficial sedimentary OC and TN within intertidal vegetated assemblages (saltmarsh and seagrass) vary along a flow gradient, which is a major driver of sediment grain size, and thus of organic matter (OM) content. A significant relationship between flow current velocity and OC and TN stocks in the seagrass was found, but not in the saltmarsh. OC and TN stocks of the saltmarsh were larger than the seagrass, even though that habitat experiences shorter hydroperiods. Mixing models revealed that OM sources also varied along the flow gradient within the seagrass, but not in the saltmarsh, showing increasing contributions of microphytobenthos (17-32%) and decreasing contributions of POM (45-35%). As well, OM sources varied vertically as microphytobenthos contribution was highest at the higher intertidal saltmarsh (48%), but not POM (39%). Macroalgae, seagrass and saltmarsh showed low contributions. Local trade-offs between flow current velocities, hydroperiod and structural complexity of vegetation must be considered, at both horizontal and vertical (elevation) spatial dimensions, for better estimates of blue carbon and nitrogen in coastal ecosystems.pt_PT
dc.description.sponsorshipFoundation of Science and Technology of Portugal (FCT) PTDC/MAR-EST/3223/2014 UID/Multi/04326/2013 FCT UID/MAR/00350/2018 SFRH/BPD/119344/2016pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1038/s41598-018-37031-6pt_PT
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/10400.1/12438
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherNature Publishing Grouppt_PT
dc.relationCOASTAL LAGOONS AND SEA LEVEL RISE: WHAT TO EXPECT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleSuperficial sedimentary stocks and sources of carbon and nitrogen in coastal vegetated assemblages along a flow gradientpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCOASTAL LAGOONS AND SEA LEVEL RISE: WHAT TO EXPECT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F88485%2F2012/PT
oaire.citation.issue1pt_PT
oaire.citation.startPage610pt_PT
oaire.citation.titleScientific Reportspt_PT
oaire.citation.volume9pt_PT
oaire.fundingStream5876
person.familyNameSantos
person.familyNameBarrena de los Santos
person.familyNameMartins
person.familyNameCarrasco
person.familyNameVeiga-Pires
person.givenNameRui
person.givenNameCarmen
person.givenNameMárcio
person.givenNameA. Rita
person.givenNameCristina
person.identifier42560
person.identifier545203
person.identifier113325
person.identifier.ciencia-id9B18-444D-2244
person.identifier.ciencia-idC317-02C0-516E
person.identifier.ciencia-idB511-7AB1-159B
person.identifier.ciencia-idA31E-1703-4030
person.identifier.ciencia-id4A1F-CEDA-E66C
person.identifier.orcid0000-0002-7861-4366
person.identifier.orcid0000-0002-7013-494X
person.identifier.orcid0000-0002-6969-2215
person.identifier.orcid0000-0002-8980-0068
person.identifier.orcid0000-0002-9323-0723
person.identifier.ridB-4168-2008
person.identifier.ridL-3723-2014
person.identifier.ridD-2235-2016
person.identifier.ridB-5144-2008
person.identifier.scopus-author-id7201375018
person.identifier.scopus-author-id26427612000
person.identifier.scopus-author-id15724386100
person.identifier.scopus-author-id7801372905
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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