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High nitrogen and phosphorous acquisition by belowground parts of Caulerpa prolifera (Chlorophyta) contribute to the species' rapid spread in Ria Formosa lagoon, Southern Portugal

2020Journal article Restricted access
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dc.contributor.authorAlexandre, Ana
dc.contributor.authorSantos, Rui
dc.date.accessioned2020-07-28T13:11:20Z
dc.date.available2021-06-01T00:30:16Z
dc.date.issued2020
dc.description.abstractDespite worldwide proliferation of the genus Caulerpa and subsequent effects on benthic communities, little is known about the nutritional physiology of the Caulerpales. Here, we investigated the uptake rates of ammonium, nitrate, amino acids, and phosphate through the fronds and rhizoids + stolon, the internal translocation of nitrogen, and developed a nitrogen budget for the rapidly spreading Caulerpa prolifera in Ria Formosa lagoon, southern Portugal. Caulerpa prolifera acquired nutrients by both aboveground and belowground parts at similar rates, except nitrate, for which fronds showed 2-fold higher uptake rates. Ammonium was the preferential nitrogen source (81% of the total nitrogen acquisition), and amino acids, which accounted for a significant fraction of total N acquisition (19%), were taken up at faster rates than nitrate. Basipetal translocation of 15 N incorporated as ammonium was nearly 3-fold higher than acropetal translocation, whereas 15 N translocation as nitrate and amino acids was smaller but equal in either direction. The estimated total nitrogen acquisition by C. prolifera was 689 μmol · m-2 · h-1 , whereas the total nitrogen requirement for growth was 672 μmol · m-2  · h-1 . The uptake of ammonium and amino acids by belowground parts accounted for the larger fraction of the total nitrogen acquisition of C. prolifera and is sufficient to satisfy the species nitrogen requirements for growth. This may be one reason explaining the fast spreading of the seaweed in the bare sediments of Ria Formosa where it does not have any macrophyte competitors and the concentration of nutrients is high.pt_PT
dc.description.sponsorshipUIDB/04326/2020/ PTDC/MAR-EST/3223/2014/DL 57/2016/CP1361/CT0001pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1111/jpy.12988pt_PT
dc.identifier.issn0022-3646
dc.identifier.urihttp://hdl.handle.net/10400.1/14533
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationEFFECTS OF OCEAN ACIDIFICATION ON THE NITROGEN BUDGET OF SEAGRASSES: ROLE OF ORGANIC VS. INORGANIC SOURCES
dc.subjectCaulerpa proliferapt_PT
dc.subjectInorganic nitrogenpt_PT
dc.subjectSeaweedpt_PT
dc.subjectUptakept_PT
dc.subjectTranslocationpt_PT
dc.subjectOrganic nitrogenpt_PT
dc.subjectPhosphoruspt_PT
dc.subjectRia Formosapt_PT
dc.titleHigh nitrogen and phosphorous acquisition by belowground parts of Caulerpa prolifera (Chlorophyta) contribute to the species' rapid spread in Ria Formosa lagoon, Southern Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleEFFECTS OF OCEAN ACIDIFICATION ON THE NITROGEN BUDGET OF SEAGRASSES: ROLE OF ORGANIC VS. INORGANIC SOURCES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F91629%2F2012/PT
oaire.citation.endPage617pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage608pt_PT
oaire.citation.titleJournal of Phycologypt_PT
oaire.citation.volume56pt_PT
person.familyNameAlexandre
person.familyNameSantos
person.givenNameAna
person.givenNameRui
person.identifier42560
person.identifier.ciencia-idA711-4AF6-8F36
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0001-7164-1487
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id35836826900
person.identifier.scopus-author-id7201375018
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc907d7fb-323d-4227-84b7-f46c150d05f4
relation.isAuthorOfPublication84487ca8-404a-4584-81f0-3662c340d712
relation.isAuthorOfPublication.latestForDiscovery84487ca8-404a-4584-81f0-3662c340d712
relation.isProjectOfPublication183ff0cd-c94c-4b5b-9c6c-97c7e3cc4697
relation.isProjectOfPublication.latestForDiscovery183ff0cd-c94c-4b5b-9c6c-97c7e3cc4697

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