Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/47006
DC FieldValueLanguage
dc.contributor.authorBenavides Gorostegui,Maren_US
dc.contributor.authorSantana Falcon, Yerayen_US
dc.contributor.authorWasmund, Norberten_US
dc.contributor.authorAristegui, Javieren_US
dc.contributor.otherAristegui, Javier-
dc.contributor.otherBenavides, Mar-
dc.contributor.otherSantana-Falcon, Yeray-
dc.date.accessioned2018-11-23T10:06:18Z-
dc.date.available2018-11-23T10:06:18Z-
dc.date.issued2014en_US
dc.identifier.issn0924-7963en_US
dc.identifier.urihttp://hdl.handle.net/10553/47006-
dc.description.abstractWe used 15N-labeled substrates to measure microbial nitrate (NO3−) and ammonium (NH4+) uptake, regeneration and associated dissolved organic nitrogen (DON) release in a coastal upwelling system off Namibia (Benguela Current) in the austral winter of 2011 with the aim of quantifying rates of new production (Pnew) and regenerated production (Preg). These measurements were made during four consecutive coastal-offshore transects. The water parcels sampled at the different stations over the transect were classified into three groups according to the time passed from the first contact of the water with the surface during coastal upwelling (‘pseudo-age’). The average Pnew was high in freshly upwelled waters with a pseudo-age < 13 d (17.8 mmol N m− 2 h− 1), and decreased abruptly towards older waters (3.9 and 2.3 mmol N m− 2 h− 1 in waters with a pseudo-age of 13 to 55 d, and > 55 d, respectively). Preg rates were similar in < 13 d and 13–55 d waters (10.9 and 11.1 mmol N m− 2 h− 1, respectively), and decreased to 6.24 mmol N m− 2 h− 1 in waters with a pseudo-age > 55 d. Measuring nitrogen regeneration and DON release fluxes allowed us to correct Pnew and Preg rates. NO3− regeneration rates were low (< 0.5 mmol N m− 2 h− 1), while NH4+ regeneration rates were in the range of NH4+ uptake rates (~ 2 to 5 mmol N m− 2 h− 1), thus influencing significantly Preg rates. Parallel studies presented in this volume indicate a relatively high abundance of dinoflagellates and mixotrophic microflagellates, which may be partly responsible for the high Preg rates observed. Our results suggest that nitrogen regeneration plays an important role in sustaining primary production in this upwelling system.en_US
dc.languageengen_US
dc.publisher0924-7963-
dc.relationIntercambio Plataforma-Oceano en El Ecosistema Marino de Las Islas Canarias-Peninsula Iberica (Caibex):Afloramiento de Cabo Guiren_US
dc.relationZonas de Mezcla y Frentes en El Océano Oscuro Como ¿Hot-Spots? de Biodiversidad y Flujos Biogeoquímicos A Través Del Mar Mediterráneo y Atlántico Nordeste - I.en_US
dc.relation.ispartofJournal of Marine Systemsen_US
dc.sourceJournal Of Marine Systems [ISSN 0924-7963], v. 140, p. 123-129en_US
dc.subject251001 Oceanografía biológicaen_US
dc.subject.otherEastern boundary currentsen_US
dc.subject.otherBenguelaen_US
dc.subject.otherPrimary productionen_US
dc.subject.otherDissolved organic nitrogenen_US
dc.subject.otherAmmonium regenerationen_US
dc.titleMicrobial uptake and regeneration of inorganic nitrogen off the coastal Namibian upwelling systemen_US
dc.typeinfo:eu-repo/semantics/Articlees
dc.typeArticlees
dc.identifier.doi10.1016/j.jmarsys.2014.05.002
dc.identifier.scopus84914100186-
dc.identifier.isi000347590200005-
dcterms.isPartOfJournal Of Marine Systems-
dcterms.sourceJournal Of Marine Systems[ISSN 0924-7963],v. 140, p. 123-129-
dc.contributor.authorscopusid36501571300-
dc.contributor.authorscopusid56162676800-
dc.contributor.authorscopusid9238530900-
dc.contributor.authorscopusid7006816204-
dc.description.lastpage129-
dc.description.firstpage123-
dc.relation.volume140-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.identifier.wosWOS:000347590200005-
dc.contributor.daisngid2027943-
dc.contributor.daisngid8764374-
dc.contributor.daisngid783923-
dc.contributor.daisngid227201-
dc.identifier.investigatorRIDD-5833-2013-
dc.identifier.investigatorRIDK-5323-2015-
dc.identifier.investigatorRIDNo ID-
dc.identifier.externalWOS:000347590200005-
dc.identifier.externalWOS:000347590200005-
dc.identifier.externalWOS:000347590200005-
dc.contributor.wosstandardWOS:Benavides, M
dc.contributor.wosstandardWOS:Santana-Falcon, Y
dc.contributor.wosstandardWOS:Wasmund, N
dc.contributor.wosstandardWOS:Aristegui, J
dc.date.coverdateNoviembre 2014
dc.identifier.ulpgces
dc.description.sjr1,231
dc.description.jcr2,508
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.project.principalinvestigatorArístegui Ruiz, Javier-
crisitem.project.principalinvestigatorArístegui Ruiz, Javier-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0002-2627-1947-
crisitem.author.orcid0000-0002-7526-7741-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameBenavides Gorostegui,Mar-
crisitem.author.fullNameSantana Falcon, Yeray-
crisitem.author.fullNameArístegui Ruiz, Javier-
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