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Urea as a key nitrogen source for the invasion of thesouthern coast of Portugal by the brown seaweedRugulopteryx okamurae (Dictyotales, Phaeophyceae)

2024-12-14Journal article Restricted access
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dc.contributor.authorJiménez Herrero, Javier
dc.contributor.authorAlexandre, Ana
dc.contributor.authorSilva, João
dc.contributor.authorSantos, Rui
dc.date.accessioned2025-01-15T11:47:10Z
dc.date.available2025-01-15T11:47:10Z
dc.date.issued2024-12-14
dc.description.abstractThe invasive seaweed Rugulopteryx okamurae, native to East Asia, is spreading rapidly along the western Mediterranean and southern Portugal, severely affecting coastal biodiversity, ecosystem structure, and economic sectors such as fisheries and tourism. This study examined the nutrient up-take kinetics of R. ok amurae, including ammonium, nitrate, urea, amino acids, and phosphate, and their role in nitrogen and phosphorus budgets based on laboratory growth rates. R. ok amurae demonstrated the highest uptake for ammonium (Vmax = 57.95 μmol · g −1 DW · h −1), followed by urea (7.74 μmol · g −1DW · h −1), nitrate (5.37 μmol · g −1 DW · h −1), and amino acids (3.71 μmol · g −1DW · h −1). The species showed higher uptake affinity for urea (α = 1.8), which accounted for 70% of nitrogen uptake. Phosphate uptake was low, and total nitrogen uptake exceeded growth requirements. These findings suggest that R. okamurae relies on organic nitrogen (urea) and may guide toward effective management strategies to mitigate its spread in coastal ecosystems.eng
dc.description.sponsorshipDL57/2016/CP1361/CT0001
dc.identifier.doi10.1111/jpy.13534
dc.identifier.eissn1529-8817
dc.identifier.issn0022-3646
dc.identifier.urihttp://hdl.handle.net/10400.1/26625
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relation.ispartofJournal of Phycology
dc.rights.uriN/A
dc.subjectInorganic Nitrogen
dc.subjectInvasive Species
dc.subjectOrganic Nitrogen
dc.subjectPhosphorus
dc.subjectRugulopteryx Okamurae
dc.subjectUrea
dc.titleUrea as a key nitrogen source for the invasion of thesouthern coast of Portugal by the brown seaweedRugulopteryx okamurae (Dictyotales, Phaeophyceae)eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.citation.endPage11
oaire.citation.startPage1
oaire.citation.titlePhycological Society of America
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameJiménez Herrero
person.familyNameAlexandre
person.familyNameSilva
person.familyNameSantos
person.givenNameJavier
person.givenNameAna
person.givenNameJoão
person.givenNameRui
person.identifier82814
person.identifier42560
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person.identifier.ciencia-idA711-4AF6-8F36
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person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0002-5459-1139
person.identifier.orcid0000-0001-7164-1487
person.identifier.orcid0000-0002-7211-1661
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridJ-7874-2013
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id35836826900
person.identifier.scopus-author-id7403023547
person.identifier.scopus-author-id7201375018
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
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