Effects of heavy metal pollution on soil macrofauna in a grassland of Northern France |
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| Institution: | 1. Université de Lorraine, Laboratoire Sols et Environnement, UMR 1120, 54500 Vand?uvre-lès-Nancy, France;2. INRA, Laboratoire Sols et Environnement, UMR 1120,54500 Vand?uvre-lès-Nancy, France;3. UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France;4. UMR CEFE 5175, Université de Montpellier, EPHE, Université Paul-Valéry Montpellier, 34199 Montpellier Cedex, France;5. Department of Bioscience, Aarhus University, Silkeborg, Denmark;6. UMR SAS 1069, INRA, Agrocampus Ouest, 65 rue de Saint Brieuc, 35042 Rennes cedex, France;7. Université Rennes 1, UMR CNRS 6553 EcoBio, Station Biologique, 35380 Paimpont, France;1. Red de Ecología Funcional, Instituto de Ecología A.C. (INECOL), Carretera antigua a Coatepec 351, El Haya, Xalapa 91070, Veracruz, Mexico;2. Facultad de biología, Universidad Veracruzana, Circuito Gonzalo Aguirre Beltrán s/n, Zona Universitaria, 91090 Xalapa, Veracruz, Mexico;3. Unidad de Tecnología Ambiental, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C. (CIATEJ), Av. Normalistas No. 800, Col. Colinas de la Normal. Guadalajara, A.P. 2-191, Guadalajara, 44270, Jalisco, Mexico |
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| Abstract: | In the north of France, a century of industrial metallurgic activities produced significant heavy metal soil pollution. In the north of France zinc smelter waste created a gradient of zinc concentration from 171 to 19 000 ppm in 35 m. The aim of this study was to evaluate the effects of soil pollution on the composition, density and diversity of macrofauna communities. The results showed that heavy metals reduce the overall density of earthworms and other macrofauna populations. The composition of the macrofauna community changed with the degree of pollution. There was no simple relationship between soil zinc content and species richness. In polluted areas, the number of species could be lower, equal or higher than in unpolluted zones. Increase of species richness in some polluted zones was due to the settlement of tolerant arthropod taxa. Coleoptera and some Arachnida were possibly favoured by the litter accumulation resulting from the reduced population densities of earthworms and other decomposers. |
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