Estado trófico y características morfométricas como factores reguladores de las tasas de sedimentación en embalses mediterráneos

Inmaculada de Vicente; Álvaro García-Bermúdez; Luis Cruz-Pizarro

doi:10.4995/ia.2022.17609

Autores/as

Inmaculada de Vicente Universidad de Granada https://orcid.org/0000-0002-1449-5740
Álvaro García-Bermúdez Universidad de Granada
Luis Cruz-Pizarro Universidad de Granada https://orcid.org/0000-0003-0687-0704

DOI:

https://doi.org/10.4995/ia.2022.17609

Palabras clave:

sedimentación, tasa de sedimentación, estado trófico, embalses mediterráneos

Resumen

En este trabajo se ha medido la tasa de sedimentación de material particulado, como peso seco (DW) así como de carbono (C), nitrógeno (N) y fósforo (P) en seis embalses mediterráneos de características muy contrastadas. Nuestro principal objetivo ha sido determinar: (1) las relaciones entre: DW, la razón molar (C:N:P) del seston, el fósforo total (PT), la razón entre el área de la cuenca de captación y el área superficial de los embalses (Ac:Ar) y la resuspensión del sedimento (razón dinámica); y (2) la relación entre la fracción de la producción primaria que sedimenta desde la zona trófica (razón de exportación) y el estado trófico. Los resultados muestran relaciones positivas y significativas de DW con Ac:Ar, y relaciones positivas pero no significativas con PT y con la razón dinámica. La estequiometría sestónica mostró grandes diferencias con la relación de Redfield. Finalmente, la razón de exportación y el estado trófico muestra una relación inversa, aunque no significativa, indicando posiblemente que el plancton de los embalses menos eutrofizados es menos eficiente reteniendo nutrientes en la columna de agua.

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Biografía del autor/a

Inmaculada de Vicente, Universidad de Granada

Instituto del Agua, Departamento de Ecología

Álvaro García-Bermúdez, Universidad de Granada

Instituto del Agua

Luis Cruz-Pizarro, Universidad de Granada

Instituto del Agua, Departamento de Ecología

Citas

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