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dc.contributor.author
Paparazzo, Flavio Emiliano
dc.contributor.author
Pierattini Martinez, Regina
dc.contributor.author
Fabro Cerreia Fus, Elena Ines
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Gonçalves, Rodrigo Javier
dc.contributor.author
Crespi Abril, Augusto Cesar
dc.contributor.author
Soria, Rodrigo Gaspar
dc.contributor.author
Barbieri, Elena Susana
dc.contributor.author
Almandoz, Gaston Osvaldo
dc.date.available
2022-05-24T17:44:04Z
dc.date.issued
2021-02
dc.identifier.citation
Paparazzo, Flavio Emiliano; Pierattini Martinez, Regina; Fabro Cerreia Fus, Elena Ines; Gonçalves, Rodrigo Javier; Crespi Abril, Augusto Cesar; et al.; Relevance of sporadic upwelling events on primary productivity: The key role of nitrogen in a gulf of SW Atlantic Ocean; Elsevier Science; Estuarine, Coastal and Shelf Science; 249; 2-2021; 1-9
dc.identifier.issn
0272-7714
dc.identifier.uri
http://hdl.handle.net/11336/158160
dc.description.abstract
In order to assess the relevance of sporadic upwelling events on primary productivity, the availability of nitrogen (N) sources and their uptake by phytoplankton were studied. Incubations of 15N-enriched samples were performed at 3 depths in 12 stations in San Jorge Gulf (SJG, Patagonia Argentina) aboard of the R/V “Puerto Deseado” during November 2016. Additional coastal stations were sampled to analyze the upwelling event. The total uptake of N sources (ρNO3 - + ρNH4 +) was higher on the surface than in the deep layer. The ρNO3 - by phytoplankton doubled that of ρNH4 + suggesting SJG acted as a CO2 sink during the period studied. However, NH4 + played an important role in maintaining primary productivity where NO3 − was low. In most stations, phytoplankton showed a preference for the uptake of the less available N source, likely resulting from adaptation to low nutrient concentrations. However, in the southwestern sector of the gulf, where a wind-induced upwelling occurred, phytoplankton preferred to uptake NO3 − , this being the most abundant N source. As a consequence, the integrated primary productivity in the water column of that sector was high. Results suggest that such high productivity was governed by the optimal relationship between the preference and availability of N, established by the presence of elevated NO3 − and low NH4 + ambient concentration. This would be a physiological process regardless of community composition. The new primary productivity generated by upwelling events could be key to feeding the biological resources of the gulf.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
UPWELLING
dc.subject
NITROGEN SOURCES
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PHYTOPLANKTON
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UPTAKE
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RELATIVE PREFERENCE
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SAN JORGE GULF
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Biología Marina, Limnología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Relevance of sporadic upwelling events on primary productivity: The key role of nitrogen in a gulf of SW Atlantic Ocean
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-12-03T19:30:03Z
dc.journal.volume
249
dc.journal.pagination
1-9
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Orlando
dc.description.fil
Fil: Paparazzo, Flavio Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Pierattini Martinez, Regina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Fabro Cerreia Fus, Elena Ines. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Gonçalves, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Crespi Abril, Augusto Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Soria, Rodrigo Gaspar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Barbieri, Elena Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Almandoz, Gaston Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata; Argentina
dc.journal.title
Estuarine, Coastal and Shelf Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.ecss.2020.107123
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0272771420308544?via%3Dihub
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