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Variability of nutrients and chlorophyll a in Ancao Inlet during a spring tidal cycle in April 2009

2012-04Journal article Open access
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dc.contributor.authorAlcantara, P.
dc.contributor.authorCravo, A.
dc.contributor.authorJacob, J.
dc.contributor.authorCravo, Alexandra
dc.date.accessioned2018-12-07T14:52:30Z
dc.date.available2018-12-07T14:52:30Z
dc.date.issued2012-04
dc.description.abstractSao Luis or Ancao Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (similar to 10%). Temperature, salinity, pH, dissolved oxygen, and chlorophyll a and nutrient concentrations were measured hourly at the surface, at an intermediate level, and near the bottom over a complete spring tidal cycle, at a sampling point in the middle of the inlet. Current velocity was also measured hourly over the entire cross-section of the inlet using an acoustic Doppler current meter. From these parameters, the flow rate and the transport of nutrients and chlorophyll a were calculated and integrated over the complete tidal cycle providing the net transport. The results show that this is a well-mixed dynamic inlet where, during spring tide, the tidal signal is evident particularly for the nutrient and chlorophyll a concentrations. The nutrient concentrations were low (almost depleted), while the chlorophyll a concentrations were high (4-6 mg m(-3)). The estimated transports through Ancao Inlet revealed that there was a net import of chlorophyll a, nitrate, and phosphate to the Ria Formosa lagoon, while silicate was exported to the adjacent coastal area.
dc.description.sponsorshipCenter for Marine and Environmental Research (CIMA, Portugal)
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.7773/cm.v38i1B.1780
dc.identifier.issn0185-3880
dc.identifier.urihttp://hdl.handle.net/10400.1/11100
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInst Investigaciones Oceanologicas, U A B C
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectFormosa coastal lagoon
dc.subjectRia-Formosa
dc.subjectWater-quality
dc.subjectPortugal
dc.subjectDynamics
dc.subjectExchanges
dc.titleVariability of nutrients and chlorophyll a in Ancao Inlet during a spring tidal cycle in April 2009
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage176
oaire.citation.issue1B
oaire.citation.startPage161
oaire.citation.titleCiencias Marinas
oaire.citation.volume38
person.familyNameCravador
person.familyNameJacob
person.familyNameCravo
person.givenNameAlfredo
person.givenNameJosé
person.givenNameAlexandra
person.identifier.ciencia-id7210-CCF6-4C5E
person.identifier.ciencia-id7419-EE20-8039
person.identifier.orcid0000-0002-9831-9815
person.identifier.orcid0000-0001-9718-7470
person.identifier.orcid0000-0002-2569-3929
person.identifier.ridK-7247-2012
person.identifier.scopus-author-id6602537257
person.identifier.scopus-author-id36552467800
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication8c84a9e6-6b7f-4b50-93a2-152c85901722
relation.isAuthorOfPublicationae234da9-68be-4322-a65b-7b1f2c1c0135
relation.isAuthorOfPublicationf19c20c8-9654-43db-841b-2c6f14979df5
relation.isAuthorOfPublication.latestForDiscoveryae234da9-68be-4322-a65b-7b1f2c1c0135

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