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Sources of anthropogenic nutrients and their implications on nutrient chemistry and ecological conditions of Ria Formosa lagoon, Portugal

2023-07Journal article Restricted access
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dc.contributor.authorOduor, Nancy A.
dc.contributor.authorCristina, Sónia
dc.contributor.authorGoela, Priscila
dc.date.accessioned2023-04-17T09:28:56Z
dc.date.available2023-04-17T09:28:56Z
dc.date.issued2023-07
dc.description.abstractShallow coastal waters receive high anthropogenic nutrients (nitrogen-N and phosphorus-P) from land that can change their nutrient chemistry, algal composition, and food webs with serious effects on marine life, human health, and local livelihoods. Managing anthropogenic nutrient inputs is thus key to ensuring healthy and productive coastal ecosystems. This study conducted a bimonthly sampling for eight months between 2014 and 2015 to determine the influence of agriculture, sewage, and natural nutrient sources on nutrient chemistry, ecological status, and possible implications for aquaculture production in the western side of Ria Formosa lagoon. Ecological Quality Ratios (EQR) were calculated from nutrient ratios (N: P: Si) computed from nutrient concentrations with the Redfield ratio (N: P: Si =16:1:16) used as a reference for ecological status determination. A mean of 3.7, 1.0, and 4.6 mu mol/L; 6.7, 1.12, and 5.5 mu mol/L; and 4.6, 0.7, and 2.8 mu mol/L were recorded for dissolved inorganic nitrogen, phosphorus and silicates concentrations at sewage, agriculture, and natural sites respectively. The site mean EQR values ranged between 0.55 and 0.69. The overall ecological status of the west part of the lagoon was 'Moderate', with all the sites grouped under 'Good'/'Moderate' and 'Moderate'/'Poor' classes based on nutrient ratios. This study demonstrates that the western part of the lagoon's nutrient chemistry is highly influenced by the nutrient sources with agricultural run-off and sewage discharges associated with nitrates, and ammonia and phosphates respectively. The elevated ammonium and phosphates registered can transform the phytoplankton composition to non-diatomic species and affect the current ecological functions of the lagoon. We recommend further studies, including biological quality elements, to get more comprehensive results on the study area.(c) 2023 Elsevier B.V. All rights reserved.pt_PT
dc.description.sponsorshipLA/P/0069/2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.rsma.2023.102843pt_PT
dc.identifier.issn2352-4855
dc.identifier.urihttp://hdl.handle.net/10400.1/19465
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCentre for Marine and Environmental Research (CIMA)
dc.relationNot Available
dc.relationNot Available
dc.subjectNutrient pollutionpt_PT
dc.subjectNitrogenpt_PT
dc.subjectPhosphoruspt_PT
dc.subjectSilicatespt_PT
dc.subjectEcological statuspt_PT
dc.subjectRia Formosa coastal lagoonpt_PT
dc.titleSources of anthropogenic nutrients and their implications on nutrient chemistry and ecological conditions of Ria Formosa lagoon, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Marine and Environmental Research (CIMA)
oaire.awardTitleNot Available
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00350%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F02014%2F2017%2FCP1397%2FCT0005/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F01635%2F2017%2FCP1397%2FCT0004/PT
oaire.citation.startPage102843pt_PT
oaire.citation.titleRegional Studies in Marine Sciencept_PT
oaire.citation.volume61pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 2017
oaire.fundingStreamCEEC IND 2017
person.familyNameCristina
person.familyNameGoela
person.givenNameSónia
person.givenNamePriscila
person.identifier.ciencia-idB713-3911-1803
person.identifier.orcid0000-0002-5716-9750
person.identifier.orcid0000-0001-9786-1269
person.identifier.scopus-author-id55957312000
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 Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication4017dcea-9040-43b3-8389-851e29d2dccb
relation.isAuthorOfPublication.latestForDiscovery4017dcea-9040-43b3-8389-851e29d2dccb
relation.isProjectOfPublication62b4d568-8b21-464c-97ed-de826eab4136
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