Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/50877
Campo DC Valoridioma
dc.contributor.authorMinas, Hans Joachimen_US
dc.contributor.authorMinas, Moniqueen_US
dc.contributor.authorPackard, Theodore Trainen_US
dc.date.accessioned2018-11-24T19:34:44Z-
dc.date.available2018-11-24T19:34:44Z-
dc.date.issued1986en_US
dc.identifier.issn0024-3590en_US
dc.identifier.urihttp://hdl.handle.net/10553/50877-
dc.description.abstractA combination of Broenkow’s nutrient oxygen model and Bowden’s residence time evaluation of upwelled waters enabled us to calculate the “net community production” (NCP) in coastal upwelling areas (NW Africa, SW Africa, Peru) and in an open upwelling (Costa Rica Dome). Since NCP represents mainly new production in terms of phosphorus or nitrogen, and since it derives from integrated nutrient consumption over the main production area, a good picture of the average fertility of these zones is obtained. In terms of carbon, NCP averaged 0.6 g C m-2 d-l off Peru, 1.1 off SW Africa, and 2.3 off NW Africa. However, production budget per kilometer of coastline is greater for both Peru and SW Africa than it is for NW Africa. The lower activities off Peru and off SW Africa correspond to a relatively high nutrient-low chlorophyll (HNLC) situation, characterized by a slowly growing phytoplankton standing stock. Such HNLC situations are greatly pronounced in the Costa Rica Dome, with NCP values as low as 0.14 g C m-2 d-l. Herbivorous grazing in the freshly upwelled source water appears to be the most plausible explanation for the low chlorophyll. This mechanism for cropping phytoplankton and retarding nutrient uptake provides a way to spread nutrient input to the open ocean. Italso explains the prevalence of oxygen undersaturation (and CO, oversaturation) in the surface waters of the equatorial upwelling. By using the NW African data and NCP and ammonium excretion rates from the literature we could calculate an Eppley factor (pN0, - : pNO,- + pNH,+) of 0.64.en_US
dc.languageengen_US
dc.publisher0024-3590-
dc.relation.ispartofLimnology and Oceanographyen_US
dc.sourceLimnology and Oceanography [ISSN 0024-3590], v. 31, p. 1182-1206en_US
dc.subject251001 Oceanografía biológicaen_US
dc.titleProductivity in upwelling areas deduced from hydrographic and chemical fieldsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.doi10.4319/lo.1986.31.6.1182en_US
dc.identifier.scopus0022823163-
dc.contributor.authorscopusid6601973212-
dc.contributor.authorscopusid6603918168-
dc.contributor.authorscopusid7004249480-
dc.description.lastpage1206-
dc.description.firstpage1182-
dc.relation.volume31-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.utils.revisionen_US
dc.identifier.ulpgces
dc.description.scieSCIE
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.deptGIR ECOAQUA: Ecofisiología de Organismos Marinos-
crisitem.author.deptIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.orcid0000-0002-5880-1199-
crisitem.author.parentorgIU de Investigación en Acuicultura Sostenible y Ec-
crisitem.author.fullNamePackard, Theodore Train-
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