Qasemian L. auteur aut IRD Guiral Daniel auteur aut IRD Ziarelli F. auteur aut IRD Ruaudel F. auteur aut IRD Farnet A. M. auteur aut IRD text journalArticle eng text/pdf born digital access The widespread concern about pollution caused by Polycyclic Aromatic Hydrocarbons (PAHs) raises the question of how they affect soil microbial communities which are potentially involved in the transformation of these pollutants. Using microcosms, we describe the effect of anthracene, a model PAH, on microbial communities inhabiting a Pinus halepensis litter from both coastal (COS) and inland (INL) Mediterranean sites. The microcosms were incubated over 3 months (25 degrees C, 60% WHC) and the effects of anthracene on microbial activities of both litters were monitored. Different enzyme activities (laccase, cellulase, beta-glucosidase and acid phosphatase) and microbial respiration were measured and variations in litter chemical composition over incubation were determined using C-13 Nuclear Magnetic Resonance (NMR) from both sites. Our results show that lignocellulolytic enzymes increased markedly after a 3-month incubation in COS microcosms, especially in the presence of anthracene, whereas INL microcosms were not similarly affected. These results show that anthracene not only has no toxic effect on the microbial activities tested but actually enhances the lignocellulolytic activities of the fungal communities from coastal litters, demonstrating the detoxification potential and resistance of stressed Mediterranean coastal ecosystems. specialized ZONE MEDITERRANEENNE C-13 NMR Enzyme activities Mediterranean ecosystems PAHs Microbial respiration 074 082 89 5 548-555 2012 0045-6535 https://www.documentation.ird.fr/hor/fdi:010057162 10.1016/j.chemosphere.2012.05.047 0045-6535 [F B010057162] https://www.documentation.ird.fr/hor/fdi:010057162 https://www.documentation.ird.fr/intranet/publi/2012/10/010057162.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2012-11-09 2019-03-22 fdi:010057162 fre