Consulta: subjectFacets:"Sediment acidification"
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Data/hora: 13/06/2024 12:16:32

Diagenetic Processes in Aquaculture Ponds Showing Metal Accumulation on Shrimp Gills
Provedor de dados: 5
Autores: Lemonnier, Hugues; Royer, Florence; Caradec, Florian; Lopez, Etienne; Hubert, Clarisse; Rabiller, Emilie; Desclaux, Terence; Fernandez, Jean-michel; Andrieux-loyer, Francoise.
The gill is the organ by which many toxic metals are taken up by crustaceans. Iron is known to precipitate at its surface, a phenomenon recently observed in some tropical aquaculture ponds. The present study uses a field approach to understand better the environmental conditions and ecological processes involved in this deposit. Because shrimp are exposed to reduced products originating from organic waste accumulated in the sediment, spatial variation in pH, redox potential and concentrations of dissolved metals in pore water were investigated in these ponds. Total organic carbon, acid volatile sulfide and pyrite were also analyzed in the solid phase. Fe2+ in pore waters showed high spatial variability between ponds and within the same pond with...
Tipo: Text
Palavras-chave: Shrimp aquaculture sustainability; Iron deposits; Gills; Sediment acidification; Redox dynamic; Dynamic of metals; Pyrite.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00678/79026/81450.pdf