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Unraveling the Unseen Players in the Ocean - A Field Guide to Water Chemistry and Marine Microbiology
Published on: November 5, 2014
Dimetilsulfuro oceánico: producción durante el pastoreo del zooplancton en el fitoplancton
Science (New York, N.Y.)
|September 19, 1986
Resumen
El fitoplancton marino libera dimetilsulfuro (DMS), un compuesto clave del azufre, en la atmósfera. El pastoreo de zooplancton mejora significativamente esta producción de DMS, lo que sugiere que lo es.
Área de la Ciencia:
- La biogeoquímica marina es la biogeoquímica marina.
- Química atmosférica La química atmosférica es la química de la atmósfera.
- Oceanografía La oceanografía es la oceanografía.
Sus antecedentes:
- Los océanos contribuyen significativamente al flujo global de azufre biogénico.
- El dimetilsulfuro (DMS) representa aproximadamente el 90% de las emisiones marinas de azufre.
- El DMS se deriva principalmente de la descomposición del dimetilsulfoniopropionato (DMSP) producido por los organismos marinos, especialmente el fitoplancton.
Objetivo del estudio:
- Investigar los factores que influyen en la producción de dimetilsulfuro (DMS) en entornos marinos.
- Para entender el papel de las interacciones de fitoplancton y zooplancton en la liberación de DMS.
Principales métodos:
- El estudio se centra en los procesos biológicos y químicos que rigen la producción de DMS.
- Los datos de observación y los enfoques de modelado potencial están implícitos.
Principales resultados:
- El fitoplancton es una fuente primaria de dimetilsulfuro marino (DMS).
- El pastoreo de zooplancton aumenta dramáticamente la tasa de liberación de DMS del fitoplancton.
- La producción de DMS inducida por el pastoreo puede representar una vía de producción de DMS dominante en muchos ecosistemas marinos.
Conclusiones:
- La producción de fitoplancton-DMS está modulada significativamente por la actividad del zooplancton.
- La interacción entre los herbívoros y el fitoplancton es un factor crítico en el ciclo del azufre marino.
- Este mecanismo de pastoreo es probablemente uno de los principales contribuyentes a los niveles atmosféricos de DMS del océano.
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