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dc.contributor.authorShihan, Ammar-
dc.contributor.authorHattenschwiler, Stephan-
dc.contributor.authorMilcu, Alexandru-
dc.contributor.authorJoly, Francois-Xavier-
dc.contributor.authorSantonja, Mathieu-
dc.contributor.authorFromin, Nathalie-
dc.description.abstractThis study aimed at quantifying the consequences of reduced precipitation and plant diversity on soil microbial community functioning in a Mediterranean shrubland of southern France. Across a natural gradient of shrub species diversity, we established a total of 92 plots (4 × 4 m) with and without a moderate rain exclusion treatment of about 12 % of total precipitation. Shrub diversity included all possible combinations of the four dominant species (Cistus albidus, Quercus coccifera, Rosmarinus officinalis, and Ulex parviflorus). Respective leaf litter mixtures of these species combinations were exposed in all plots over 2 years. We quantified how litter species richness and the reduction in precipitation affected the soil microbial substrate utilization (measured by CO2 evolution using the MicroResp method) on soil samples collected underneath each individual litter mixture after 1 and 2 years of decomposition. Moderate precipitation reduction had a minor impact, but litter species richness and the dissimilarity in phenolic concentrations (estimated using Rao’s quadratic entropy) showed a positive effect on the diversity of substrates metabolized by the microbial communities. Moreover, litter species richness increased soil microbial activity by increasing the catabolic diversity of the soil microbial community. These effects were mostly driven by the presence of Quercus and Ulex leaf litter, which at the same time reduced microbial metabolic dominance, while the presence of Rosmarinus had opposite effects. Our data suggest that plant species loss can have stronger effects on the functioning of soil microbial communities than moderate drought, with potentially important feedbacks on biogeochemical cycling in Mediterranean shrubland ecosystems.en_UK
dc.relationShihan A, Hattenschwiler S, Milcu A, Joly F, Santonja M & Fromin N (2017) Changes in soil microbial substrate utilization in response to altered litter diversity and precipitation in a Mediterranean shrubland, Biology and Fertility of Soils, 53 (2), pp. 171-185.-
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.-
dc.subjectClimate changeen_UK
dc.subjectMediterranean ecosystemen_UK
dc.subjectLitter decompositionen_UK
dc.subjectFunctional diversityen_UK
dc.subjectSoil microbial activityen_UK
dc.titleChanges in soil microbial substrate utilization in response to altered litter diversity and precipitation in a Mediterranean shrublanden_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreasonThe publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.-
dc.citation.jtitleBiology and Fertility of Soils-
dc.type.statusPublisher version (final published refereed version)-
dc.contributor.affiliationUniversity of Montpellier-
dc.contributor.affiliationPaul Valery University, Montpellier III-
dc.contributor.affiliationUniversity of Montpellier-
dc.contributor.affiliationBiological and Environmental Sciences-
dc.contributor.affiliationAix-Marseille University-
dc.contributor.affiliationUniversity of Montpellier-
Appears in Collections:Biological and Environmental Sciences Journal Articles

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