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Comentario a "La calcificación del fitoplancton en un mundo con alto contenido de CO2"
Ulf Riebesell1, Richard G J Bellerby, Anja Engel
1Leibniz Institute of Marine Sciences, IFM-GEOMAR, D-24105 Kiel, Germany. uriebesell@ifm-geomar.de
Science (New York, N.Y.)
|December 6, 2008
Resumen
Coccolithophore Emiliania huxleyi muestra una mayor producción de materia orgánica y calcificación bajo un alto contenido de dióxido de carbono. Sin embargo, las limitaciones experimentales pueden afectar estos hallazgos, lo que justifica una mayor investigación sobre los impactos del dióxido de carbono.
Área de la Ciencia:
- Biología marina Biología marina.
- Oceanografía La oceanografía es la oceanografía.
- Biogeoquímica La biogeoquímica es la bioquímica.
Sus antecedentes:
- El cocolitóforo Emiliania huxleyi es una especie clave de fitoplancton que influye en el ciclo del carbono marino.
- Estudios anteriores indicaron respuestas limitadas de E. huxleyi a niveles elevados de dióxido de carbono.
- Iglesias-Rodríguez y otros. informó un aumento significativo en la producción de materia orgánica y la calcificación.
Objetivo del estudio:
- Evaluar críticamente el protocolo experimental de Iglesias-Rodriguez y otros.
- Reevaluar los hallazgos informados sobre la respuesta de Emiliania huxleyi al alto nivel de CO2.
- Para abordar las discrepancias con la literatura científica existente.
Principales métodos:
- Revisión del diseño experimental y los procedimientos utilizados por Iglesias-Rodriguez et al.
- Análisis de las limitaciones potenciales en sus estudios de laboratorio y de campo.
- Comparación de su interpretación de los datos con los principios oceanográficos establecidos.
Principales resultados:
- Identificación de deficiencias significativas en el protocolo experimental de Iglesias-Rodriguez y otros.
- Cuestionando la validez de sus informes de duplicación de la producción de materia orgánica y la calcificación.
- Destacando inconsistencias con numerosas investigaciones previas de laboratorio y de campo.
Conclusiones:
- El protocolo experimental de Iglesias-Rodriguez y otros. pueden no apoyar con fiabilidad sus conclusiones.
- La interpretación de la respuesta de Emiliania huxleyi a las altas emisiones de CO2 requiere una reevaluación.
- Se necesita más investigación con metodologías sólidas para aclarar el impacto del CO2 en este grupo vital de fitoplancton.
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