DigitalUM :: Browsing by Subject "Aznalcóllar"

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The bryophyte diaspore bank in soils affected by the Aznalcóllar (Seville, SW Spain) mine disaster
(Murcia: Universidad de Murcia, Servicio de Publicaciones, 2003) Ordóñez Sánchez, Alejandro; Cano Bernabé, María Jesús; Guerra Montes, Juan; Biología Vegetal; Facultad de Biología
The tailings dam failure of the pyrite mine in Aznalcóllar released toxic tailings slurries and liquid that contaminated soils and water throug hout the Guadiamar basin. In this study we attempt to ascertain the recovery state of the zone four years after the dam failure, based on a study of the soil diaspore bank and the method of cultivating soil plots and determining the germinated species. Four localities were selected in the middle zone of the basin. Once the plots were established (five in each locality), they were divided into four groups, depending on the culture conditions. Soil samples were also taken for the analysis of heavy metals and edaphic parameters. Data seem to show that four years after the dam failure soils have started a slow recovery and hea vy metal levels are decreasing.