Picophytoplankton and carbon cycle on the northeastern shelf of the Gulf of Cádiz, SW Iberian Peninsula

  1. Mariana Ribas Ribas 1
  2. Cristina Sobrino 2
  3. Bibiana Debelius 1
  4. Luís M. Lubián
  5. Rocio Ponce 1
  6. Abelardo Gómez Parra 1
  7. Jesús M. Forja 1
  1. 1 Universidad de Cádiz
    info

    Universidad de Cádiz

    Cádiz, España

    ROR https://ror.org/04mxxkb11

  2. 2 Universidade de Vigo
    info

    Universidade de Vigo

    Vigo, España

    ROR https://ror.org/05rdf8595

Revista:
Scientia Marina

ISSN: 0214-8358

Año de publicación: 2013

Volumen: 77

Número: 1

Páginas: 49-62

Tipo: Artículo

DOI: 10.3989/SCIMAR.03732.27D DIALNET GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Scientia Marina

Resumen

Se llevaron a cabo cuatro campañas oceanográficas (Jun’06 y Nov’06; Feb’07 y May’07) en la plataforma continental noreste del golfo de Cádiz (suroeste de la península Ibérica) para relacionar la distribución espacio-temporal de los parámetros del ciclo del carbono (carbono inorgánico disuelto y carbono orgánico disuelto) con la biomasa picofitoplanctónica y la composición de la comunidad. Además, se investigó la producción neta del ecosistema y la contri-bución del picofitoplancton al proceso de intercambio atmósfera-agua de CO2. Los resultados mostraron que la clorofila-a, los parámetros del ciclo del carbono y la composición del picofitoplancton presentaron una gran estacionalidad, jugando el estuario del Guadalquivir un papel importante en la contribución de nutrientes y material particulado en suspensión a lo largo del año. Los análisis de citometría demostraron que Prochlorococcus y Synechococcus fueron las principales poblaciones en el área de estudio y que su distribución espacial y temporal fue complementaria: Prochlorococcus presentó la máxima concentración en primavera y verano en aguas superficiales oceánicas, mientras que Synechococcus en invierno y otoño en aguas someras. Además, se observó una relación entre los parámetros estudiados y fugacidad de CO2, lo que sugiere que la producción primaria es un factor importante en la regulación de este parámetro en el área de estudio. El balance de carbono calculado indicó que el área actúa como sumidero de carbono a escala anual.

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Fuente de los datos: Dialnet