Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/50876
DC FieldValueLanguage
dc.contributor.authorMartinez, Rosaen_US
dc.contributor.authorPackard, Theodore T.en_US
dc.contributor.authorBlasco, Dolorsen_US
dc.date.accessioned2018-11-24T19:34:17Z-
dc.date.available2018-11-24T19:34:17Z-
dc.date.issued1987en_US
dc.identifier.issn0198-0149en_US
dc.identifier.urihttp://hdl.handle.net/10553/50876-
dc.description.abstractLight kinetics and diel cycles of nitrate reductase (NR) activity were studied in the upwelling ecosystem off northwest Africa. The activity of the enzyme showed a strong response to light at low intensities but became saturated at light intensities above 15–30% of the incident light intensity. At higher irradiances, NR activity showed photoinhibition. At sea surface irradiances an average inhibition of 32% in the NR activity was observed. Diel cycles of NR activity exhibited the following characteristics: a low pre-dawn value (0.03–0.009 μmol NO3−N (μg Chl α)−1), a rapid increase with the onset of daylight, a maximum before noon (tripling the dark value), a secondary maximum in the early afternoon, and an afternoon-evening decrease that coincided with the decrease in sunlight. To simulate these characteristics a continuous polynomial function of light and time was developeden_US
dc.languageengen_US
dc.publisher0198-0149-
dc.relation.ispartofDeep-Sea Research, Part A: Oceanographic Research Papersen_US
dc.sourceDeep Sea Research Part A, Oceanographic Research Papers [ISSN 0198-0149], v. 34, p. 741-753en_US
dc.subject251001 Oceanografía biológicaen_US
dc.titleLight effects and diel variations of nitrate reductase activity in phytoplankton from the northwest Africa upwelling regionen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/0198-0149(87)90034-3en_US
dc.identifier.scopus0023490677-
dc.contributor.authorscopusid7402193226-
dc.contributor.authorscopusid7004249480-
dc.contributor.authorscopusid35565093700-
dc.description.lastpage753-
dc.description.firstpage741-
dc.relation.volume34-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.utils.revisionen_US
dc.identifier.ulpgces
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.orcid0000-0002-5880-1199-
crisitem.author.fullNamePackard, Theodore Train-
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