caa a22 4500 467902453 CHVBK 20180406152822.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s10661-006-7398-7 doi (NATIONALLICENCE)springer-10.1007/s10661-006-7398-7 Ecotoxicological Assessment of the Impact of Residual Heavy Metals on Soil Nematodes in the Guadiamar River Basin (Southern Spain) [Elektronische Daten] [Sara Sánchez-Moreno, Julio Camargo, Alfonso Navas] On 25 April 1998, as a consequence of the breaking of a dam containing the tailings of a pyrite mine, a land strip of approximately 43 km in length was covered with a layer of black sludge, containing high levels of heavy metals, along the Guadiamar River Basin (southern Spain). In this investigation we carried out an ecotoxicological assessment (field and laboratory studies) of the impact of residual heavy metals (Cu, Pb, Zn, Ni) on soil nematodes in the impacted riparian zone, two years after the huge mine spillage. Concentrations of residual heavy metals were significantly (P<0.05) higher at the impacted sampling sectors (S-2, S-3, S-4, S-5) than at the unpolluted (reference) sampling sector (S-1). Nickel however exhibited the lowest increases at the impacted sectors. As a consequence, correlation coefficients between concentrations of heavy metals and values of ecological indices were not significant for Ni. In contrast, copper, lead and zinc exhibited significant (P<0.05) negative correlation coefficients with ecological indices, particularly with diversity indices (including the~number of taxa). In addition, the toxicity of Cu and Pb to nematode test species (Aphelenchus avenae and Cephalobus persegnis) during short-term toxicity bioassays was much higher than the toxicity of Zn and Ni. We conclude that residual heavy metals were still influencing adversely the community of soil nematodes in the impacted riparian zone of the Guadiamar River Basin. Cu, Pb and, to a lesser extent, Zn would be major responsible for the observed impact. Springer Science + Business Media, Inc., 2006 ecotoxicological assessment nationallicence environmental impact nationallicence Guadiamar river basin nationallicence heavy metals nationallicence soil nematodes nationallicence Sánchez-Moreno Sara Departamento de Ecología, Facultad de Biología, Universidad de Alcalá, 28871, Alcalá de Henares (Madrid), Spain aut Camargo Julio Departamento de Ecología, Facultad de Biología, Universidad de Alcalá, 28871, Alcalá de Henares (Madrid), Spain aut Navas Alfonso Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, C.S.I.C., José Gutiérrez Abascal 2, 28006, Madrid, Spain aut Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 245-262 0167-6369 116:1-3<245 2006 116 10661 https://doi.org/10.1007/s10661-006-7398-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-7398-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sánchez-Moreno Sara Departamento de Ecología, Facultad de Biología, Universidad de Alcalá, 28871, Alcalá de Henares (Madrid), Spain aut NATIONALLICENCE 700 1- Camargo Julio Departamento de Ecología, Facultad de Biología, Universidad de Alcalá, 28871, Alcalá de Henares (Madrid), Spain aut NATIONALLICENCE 700 1- Navas Alfonso Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, C.S.I.C., José Gutiérrez Abascal 2, 28006, Madrid, Spain aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 245-262 0167-6369 116:1-3<245 2006 116 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer