Trap Jean auteur aut IRD Bernard Laetitia auteur aut IRD Brauman Alain auteur aut IRD Pablo Anne-Laure auteur aut IRD Plassard C. auteur aut IRD Ranoarisoa M. P. auteur aut IRD Blanchart Eric auteur aut IRD text journalArticle eng text/pdf reformatted digital access Dispersion of bacterivorous nematodes in soil is a crucial ecological process that permits settlement and exploitation of new bacterial-rich patches. Although plant roots, by modifying soil structure, are likely to influence this process, they have so far been neglected. In this study, using an original three-compartment microcosm experimental design and polyvinyl chloride (PVC) bars to mimic plant roots, we tested the ability of roots to improve the dispersion of bacterivorous nematode populations through two wet, nonuniform granular (glass bead) media imitating contrasting soil textures. We showed that artificial roots increased migration time of bacterivorous nematode populations in the small-bead medium, suggesting that plant roots may play an important role in nematode dispersion in fine-textured soils or when soil compaction is high. specialized dispersion ecology glass-bead media migration time colonization time plant roots 074 068 47 4 296-301 2015 0022-300X https://www.documentation.ird.fr/hor/fdi:010066259 0022-300X [F B010066259] https://www.documentation.ird.fr/hor/fdi:010066259 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2021-06/010066259.pdf IRD - Base Horizon / Pleins textes 2016-04-01 2021-10-20 fdi:010066259 fre