02910naa a2200169 a 450000100080000000500110000800800410001910000120006024501700007226000090024252021040025170000160235570000150237170000170238670000160240377303210241913149332008-09-25       2008    bl uuuu     u00u1 u    #d1 aPEY, B.  aDiversity and functional play of soil fauna in a waste-constructed soil in industrial environementbcontribution of the modelization of the evolution of a Technosol.  c2008  aIn the current technological context, anthropization of the natural environment modifies roughly and radically the nature and the organization of the constituent materials of soils. These materials interact with the parent rock and are submitted to a pedogenetic evolution under influences of climate, biological activity and topographical conditions according to the three fundamental processes: weathering, transportation and accumulation. It leads to pedological profiles which are notably different of those observed on natural parent rock and have functional properties (e.g. food, filter, storage), which do not fit to agronomical demands. Fauna takes part in several processes in soils : bioturbation (energy and matter cycles, (Lavelle et al. 1997)), aggregation (Bossuyt et al. 2005), organic matter decomposition (C and N cycles, (Lavelle and Spain 2001)) which can modify indirectly others processes as eluviation, leaching, chemical weathering. The results can lead to modifications of mineral nutrition and growth of plants (Huhta 2007). Nevertheless, the part of the faunal diversity on the soil processes is still unknown, even though some studies demonstrated that modifications of diversity could influence the growth of plants (Huhta 2007). The scientific questions of this project focus on the capacity of fauna (particularly functional diversity, (Cortet et al. 2003; Heemsbergen et al. 2004)) to contribute to the rehabilitation of these soils. We focus on the mechanism and the evolution of Technosol, which can be natural soils, modified by human activities or constructed soils with waste (e.g.). In our study, we focus on a constructed soil made of clean-up industrial soil, paper sludges and compost. Fauna will be introduced on three experimental systems representing three different scales: one hectare plots, field lysimeters and laboratory experiences (mesocosms). This poster will present the concept of experiments and the first results obtained. This work is supported by the ADEME (French Environmental Agency), the Lorraine region and the GISFI (www.gisfi.prd.fr).1 aOUVRARD, S.1 aCORTET, J.1 aSCHWARTZ, C.1 aWATTEAU, F.  tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.