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Dissolved oxygen dynamics in Ria Formosa Lagoon (South Portugal) - A real time monitoring station observatory

2020-06Journal article Restricted access
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dc.contributor.authorCravo, Alexandra
dc.contributor.authorRosa, Alexandra
dc.contributor.authorJacob, J.
dc.contributor.authorCorreia, Cátia
dc.date.accessioned2021-06-24T11:35:29Z
dc.date.available2021-06-24T11:35:29Z
dc.date.issued2020-06
dc.description.abstractDissolved oxygen (DO) is considered one of the most important environmental variables of water quality. This work aimed to provide, for the first time, insights regarding DO dynamics on a representative site of the productive Ria Formosa coastal lagoon, south Europe, using a real time monitoring station observatory (acquiring data every 15 min) deployed for a period of two and a half years. This comprehensive data set represents an added value contributing to a better understanding of the DO variability throughout analyzing semidiurnal, daily, fortnightly tidal cycles (spring tide vs. neap tide), seasonal and interannual periods. This observational station was able to capture distinct temporal signatures, including episodic upwelling and meteorological events advancing the knowledge about the functioning of Ria Formosa. DO was highly variable presenting an evident seasonal distribution with the maximum concentration in spring and the minimum in summer night periods. Critical values < 5 mg/L were recorded only in 3% of the global data set with negligible hypoxia events, showing infrequent DO stressful conditions in the study area. In addition, the disclosure of its did dynamics over long periods, provided by this data set, allows to determine the impact of biological activity upon the DO variability and related ecosystem metabolism behavior (autotrophic vs. heterotrophic), through the metric estimation of Net Ecosystem Metabolism (NEM). NEM in the study area revealed to be slightly heterotrophic along one year of observation, reflecting the median percentage of DO saturation (93%). The acquired data set is highly valuable and can contribute to Ria Formosa management and protection, which is imperative for building knowledge-based societies.
dc.description.sponsorshipFundacao para a Ciencia e Tecnologia FCT UBEST project [PTDC/AAG-MAA/6899/2014]
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1016/j.marchem.2020.103806
dc.identifier.issn0304-4203
dc.identifier.urihttp://hdl.handle.net/10400.1/16452
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.subjectCoastal lagoons
dc.subjectRia Formosa
dc.subjectObservatories
dc.subjectDissolved oxygen dynamics
dc.subject.otherChemistry; Oceanography
dc.titleDissolved oxygen dynamics in Ria Formosa Lagoon (South Portugal) - A real time monitoring station observatory
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage103806
oaire.citation.titleMarine Chemistry
oaire.citation.volume223
person.familyNameCravo
person.familyNameRosa
person.familyNameJacob
person.familyNameCorreia
person.givenNameAlexandra
person.givenNameAlexandra
person.givenNameJosé
person.givenNameCátia
person.identifier.ciencia-id7419-EE20-8039
person.identifier.ciencia-id7B17-2CD2-0154
person.identifier.ciencia-id7210-CCF6-4C5E
person.identifier.ciencia-id3017-A30B-6C8E
person.identifier.orcid0000-0002-2569-3929
person.identifier.orcid0000-0003-4443-9405
person.identifier.orcid0000-0001-9718-7470
person.identifier.orcid0000-0002-2228-5292
person.identifier.scopus-author-id36552467800
rcaap.rightsrestrictedAccess
rcaap.typearticle
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relation.isAuthorOfPublication3b77d30f-4085-462f-9d35-fc989bd4ad14
relation.isAuthorOfPublicationae234da9-68be-4322-a65b-7b1f2c1c0135
relation.isAuthorOfPublicationba4f2a11-1f9c-49e9-af61-8c2306bbab5b
relation.isAuthorOfPublication.latestForDiscoveryae234da9-68be-4322-a65b-7b1f2c1c0135

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