Laossi Kam-Rigne auteur aut IRD Barot Sébastien auteur aut IRD Carvalho D. auteur aut IRD Desjardins Thierry auteur aut IRD Lavelle Patrick auteur aut IRD Martins M. auteur aut IRD Mitja Danielle auteur aut IRD Rendeiro A. C. auteur aut IRD Rousseau G. auteur aut IRD Sarrazin Max auteur aut IRD Velasquez Elena auteur aut IRD Grimaldi Michel auteur aut IRD text journalArticle eng text/pdf born digital access We examined the effect of plant diversity on plant production and soil macrofauna density and diversity. Four plants species (Arachis pintoi, an herbaceous legume; Brachiaria brizantha, a perennial grass; Leucaena leucocephala, a legume shrub; Solanum rugosum, a non-legume shrub) were used in a field experiment and communities of all combinations of one, two, three or four species were established. Plant diversity neither significantly affected density and diversity of soil macrofauna nor total plant biomass, however, the biomass of specific plants was negatively affected by plant diversity. Earthworm and ant densities were significantly higher in the presence of A. pintoi although this plant influenced neither the density of the other group nor fauna diversity. Earthworm and diplopod densities increased significantly with shoot biomass of A. pintoi. Fauna diversity increased significantly with shoot biomass (specific and total). Root biomass did not affect fauna density and diversity. Our results suggest that fauna density is affected by titter quality and that it is more affected by resource quantity than quality. Our results also confirm the importance of nitrogen fixers to ecosystem function. specialized amazon earthworms soil macrofauna biodiversity plant production legumes 074 021 51 5-6 397-407 2008 0031-4056 https://www.documentation.ird.fr/hor/fdi:010042564 10.1016/j.pedobi.2007.11.001 0031-4056 [F B010042564] https://www.documentation.ird.fr/hor/fdi:010042564 https://www.documentation.ird.fr/intranet/publi/2008/05/010042564.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2008-05-30 2017-08-23 fdi:010042564 fre