Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/73657
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dc.contributor.authorCorredor-Acosta, A.en_US
dc.contributor.authorMorales, C. E.en_US
dc.contributor.authorRodríguez-Santana, A.en_US
dc.contributor.authorAnabalón, V.en_US
dc.contributor.authorValencia, L. P.en_US
dc.contributor.authorHormazabal, S.en_US
dc.date.accessioned2020-07-13T06:43:14Z-
dc.date.available2020-07-13T06:43:14Z-
dc.date.issued2020en_US
dc.identifier.issn2169-9275en_US
dc.identifier.otherScopus-
dc.identifier.urihttp://hdl.handle.net/10553/73657-
dc.description.abstractMesoscale and submesoscale processes that contribute to localized increases in nutrients in the sunlit layer can stimulate phytoplankton growth and community changes, but the mechanisms involved remain sparsely documented with in situ data in the case of Eastern Boundary Upwelling Systems (EBUSs) and of most ocean regions. The role of diapycnal mixing in providing nutrients to the upper layer and in influencing phytoplankton size structure was analyzed in an area of intense mesoscale and submesoscale activity during the coastal upwelling season off Concepción (~36–37°S), the Humboldt Current EBUS. Diapycnal nutrient fluxes based on conductivity, temperature, and depth vertical eddy diffusivity (Kz) values (the Thorpe scale method) and on nutrient gradients were assessed in association with size-fractionated chlorophyll-a and microdiatom abundance derived from in situ sampling in an area including a mesoscale intrathermocline eddy (ITE) adjacent to a coastal upwelling front (CUF). The indirect estimates of Kz values spanned between 0.01 and 4 × 10−4 m2 s−1, and maxima in diapycnal nitrate flux per station ranged between 0.08 and 19.1 mmol m−2 day−1. Maxima in the upward fluxes were detected at the subsurface (15–40 m depth) in the CUF and ITE areas, coinciding with maxima in the micro- and nano-chlorophyll-a fractions and in microdiatom abundance. These results suggest that ITE and CUF features, as well as their interaction, can generate intense diapycnal mixing and, thereby, contribute to increasing nutrient availability below the mixed layer. In turn, these processes enhance the contribution of larger phytoplankton cells in the coastal transition zone of EBUSs.en_US
dc.languageengen_US
dc.relation.ispartofJournal of geophysical research. Oceansen_US
dc.sourceJournal of Geophysical Research: Oceans [ISSN 2169-9275], v. 125 (5), e2019JC015539 (Mayo 2020)en_US
dc.subject2510 Oceanografíaen_US
dc.subject.otherCoastal Upwelling Fronten_US
dc.subject.otherDiapycnal Nutrient Fluxen_US
dc.subject.otherIntrathermocline Eddyen_US
dc.subject.otherPhytoplankton Size Structureen_US
dc.subject.otherThorpe Scale Methoden_US
dc.subject.otherVertical Eddy Diffusivityen_US
dc.titleThe Influence of Diapycnal Nutrient Fluxes on Phytoplankton Size Distribution in an Area of Intense Mesoscale and Submesoscale Activity off Concepción, Chileen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2019JC015539en_US
dc.identifier.scopus85087428369-
dc.contributor.authorscopusid57195445313-
dc.contributor.authorscopusid7202530981-
dc.contributor.authorscopusid55954140200-
dc.contributor.authorscopusid22978450900-
dc.contributor.authorscopusid57191972111-
dc.contributor.authorscopusid6602942522-
dc.identifier.eissn2169-9291-
dc.identifier.issue5-
dc.relation.volume125en_US
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.description.numberofpages20en_US
dc.utils.revisionen_US
dc.date.coverdateMayo 2020en_US
dc.identifier.ulpgces
dc.description.jcr3,405
dc.description.jcrqQ1
item.fulltextCon texto completo-
item.grantfulltextopen-
crisitem.author.deptGIR ECOAQUA: Oceanografía Física y Geofísica Aplicada-
crisitem.author.deptIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.deptDepartamento de Física-
crisitem.author.orcid0000-0003-1960-6777-
crisitem.author.parentorgIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.fullNameRodríguez Santana, Ángel-
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