RENELLA, Giancarlo; LANDI, Loretta; ASCHER, Judith; CECCHERINI, Maria Teresa; PIETRAMELLARA, Giacomo; MENCH, Michel; NANNIPIERI, Paolo

doi:10.1016/j.envpol.2007.06.053

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RENELLA, Giancarlo
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]

LANDI, Loretta
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]

ASCHER, Judith
Università degli Studi di Firenze = University of Florence = Université de Florence [UniFI]

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Ce document a été publié dans

Environmental Pollution. 2008, vol. 152, n° 3, p. 702-712

Elsevier

Résumé en anglais

We studied the effectiveness of remediation on microbial endpoints, namely microbial biomass and activity, microbial and plant species richness, of an As-contaminated mine spoil, amended with compost (C) alone and in combination with beringite (B) or zerovalent iron grit (Z), to increase organic matter content and reduce trace elements mobility, and to allow Holcus lanatus and Pinus pinaster growth. Untreated spoil showed the lowest microbial biomass and activity and hydrolase activities, and H. lanatus as sole plant species, whereas the presented aided phytostabilisation option, especially CBZ treatment, significantly increased microbial biomass and activity and allowed colonisation by several plant species, comparable to those of an uncontaminated sandy soil. Microbial species richness was only increased in spoils amended with C alone. No clear correlation occurred between trace element mobility and microbial parameters and plant species richness. Our results indicate that the choice of indicators of soil remediation practices is a bottleneck. Organo-mineral amendment and revegetation of a gold mine spoil increased microbial activity but did not increase microbial species richness.< Réduire

Mots clés

HOLCUS LANATUS

ARSENIC CONTAMINATION

MINE SPOILS

PLANT COLONISATION

ANALYSE PAR ÉLECTROPHORÈSE

SOL POLLUE

Mots clés en anglais

REMEDIATION

BIOCHEMICAL ACTIVITY

MICROBIAL DIVERSITY

PIN MARITIME

BIOCHIMIE