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Habitat quality affects the condition of Luciobarbus sclateri in the Guadiamar River (SW Iberian Peninsula): effects of disturbances by the toxic spill of the Aznalcóllar mine

AuthorsMiguel, R. J. de; Oliva-Paterna, F. J.; Gálvez Bravo, Lucía ; Fernández-Delgado, C.
KeywordsFreshwater fish
Mass-length relationships
Environmental assessment
Habitat differences
Issue Date2013
CitationHydrobiologia 700(1): 85-97 (2013)
AbstractThis study analyzes the somatic condition of southern Iberian barbel Luciobarbus sclateri (Günther, 1868) in the Guadiamar River (SW Iberian Peninsula). This river was seriously affected by a toxic spill of about 4 million cubic meters of acidic water and 2 million cubic meters of mud rich in heavy metals. Once the spill removal works concluded, sites affected and unaffected by the accident were sampled to study its effects on the fish fauna. The ecological variables registered were related to water quality, physical state of reaches, ecological quality, resources exploited by fish, and potential intra-specific interactions. From an initial 15 ecological variables, seasonal water flow and pH explained most of the variation in barbel condition. This study shows that the Guadiamar River, 56 months after the accident, is still undergoing a recovery process where, beyond ecological variables, proximity to the affected area is the most influential factor for fish condition.
Publisher version (URL)https://doi.org/10.1007/s10750-012-1211-0
Appears in Collections:(IREC) Artículos
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