Los sedimentos y su incidencia en la eutrofización de los embalses. Caso del Río Lozoya.

María Pilar López

Resumen

Una adecuada gestión de los embalses requiere conocer el comportamiento sedimentario tanto desde el punto de vista estructural como dinámico. El sedimento juega un papel fundamental en el proceso de eutrofización por ser uno de los comportamientos más activos en el ciclo biogeoquímico de los nutrientes. Además, los procesos de sedimentación de partículas en el embalse determinan los cambios en la naturaleza del material transportado por el río. Se examinan la estructura y composición del sedimento, en un sistema de cinco embalses en cadena en el río Lozoya, en relación a los diversos procesos implicados en la biogeoquímica sedimentaria: aportes, aportación en el sedimento y retorno hacia el agua. Se intenta con ello predecir las situaciones de mayor riesgo de eutrofización, así como proponer medidas encaminadas a disminuir dichos riesgos.

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