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Título: | Sewage sludge applied to agricultural soil Ecotoxicological effects on representative soil organisms |
Autor: | Carbonell, G.; Pro González, Francisco José; Gómez, N.; Babín, M. del Mar; Fernández, Carlos CSIC; Alonso Prados, Elena CSIC ORCID; Tarazona, J. V. | Palabras clave: | Sewage sludge MS 3 Metals Body burden BFAs Effects assessment |
Fecha de publicación: | 2009 | Editor: | Elsevier | Citación: | Ecotoxicology and Environmental Safety 72(4): 1309-1319 (2009) | Resumen: | Application of sewage sludge to agricultural lands is a current practice in EU. European legislation permits its use when concentrations of metals in soil do not increase above the maximum permissible limits. In order to assess the fate and the effects on representative soil organisms of sewage sludge amendments on agricultural lands, a soil microcosm (multi-species soil system-MS 3) experiment was performed. The MS 3 columns were filled with spiked soil at three different doses 30, 60 and 120 t ha-1 fresh wt. Seed plants (Triticum aestivum, Vicia sativa and Brassica rapa) and earthworms (Eisenia fetida) were introduced into the systems. After a 21-d exposure period, a statistically significant increase for Cd, Cu, Zn and Hg concentrations was found for the soils treated with the highest application rate. Dose-related increase was observed for nickel concentrations in leachates. Plants and earthworm metal body burden offer much more information than metal concentrations and help to understand the potential for metal accumulation. Bioaccumulation factor (BAFplant-soil) presented a different behavior among species and large differences for BAFearthworm-soil, from control or sewage-amended soil, for Cd and Hg were found. B. rapa seed germination was reduced. Statistically significant decrease in fresh biomass was observed for T. aestivum and V. sativa at the highest application rate, whereas B. rapa biomass decreased at any application rate. Enzymatic activities (dehydrogenase and phosphatase) as well as respiration rate on soil microorganisms were enlarged. | URI: | http://hdl.handle.net/10261/294096 | DOI: | 10.1016/j.ecoenv.2009.01.007 | ISSN: | 0147-6513 |
Aparece en las colecciones: | (INIA) Artículos |
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