Relevancia de fuentes nitrogenadas nuevas y regeneradas en la columna de agua en Bahía Magdalena (SO Península de Baja California), México

• Autores: Rafael Cervantes Duarte, Silverio López López, Luis Fernando Aguirre, Eduardo González Rodríguez, Sonia Futema Jiménez
• Localización: Revista de biología marina y oceanografía, ISSN 0718-1957, ISSN-e 0717-3326, Vol. 47, Nº. 3, 2012, págs. 587-592
• Idioma: español
• Títulos paralelos:
  • Relevance of new and regenerated nitrogen sources in the water column of Magdalena Bay (SW Baja California Peninsula), Mexico
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• Resumen

  • Six bimonthly surveys during 2007 were carried out in Magdalena Bay (Mexico) during spring tide conditions. Spatiotemporal variations of temperature, salinity, nitrite, nitrate, ammonium, phosphate and chlorophyll-α were analyzed in the Bay. During spring-early summer (April-June) seawaters were colder and richer in new nutrients and chlorophyll-α than autumn and winter (February and October-December). The coastal upwelling during spring-early summer contributes with new nutrients to the Bay, whereas bottom-recycled nutrients should be the main input during the autumn-winter period. Thus, nutrients availability, dissolved inorganic nitrogen and phosphate, promote a seasonal pattern of phytoplankton biomass in Magdalena Bay.