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Biogeographical design of soil microbial habitats

Abstract : Since the beginning of 21th century, soil microbial diversity is intensively studied gathering a huge knowledge at local and global scales. Nevertheless, the microbial habitats have been poorly investigated, limiting our ability to link biodiversity description and regulation. In our study, we used a pyrosequencing approach targeting 16S rRNA genes directly amplified from soil DNA to have a comprehensive view of soil bacterial and archaeal community composition across the largest spatially explicit soil sampling available in France (2173 soils, area covered = 5.5x105 km2). Based on the multivariate regression tree (MRT) method, we designed 16 distinct terrestrial microbial habitats at the territory scale, delineated by the association of soil pH, C:N ratio, land use and minorly climatic conditions. The heterogeneous spatial distribution of habitats drew up a complex mosaic across France. As for plants and animals, each habitat hosts generalist and specialist taxa and a specific interaction network, directly or indirectly impacted by the Human activities. Overall, our results stressed the importance of the integration of microbial habitats for upgrading the biodiversity conservation policies in a context of global change
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https://hal.inrae.fr/hal-02951841
Contributor : Noureddine El Mjiyad <>
Submitted on : Tuesday, September 29, 2020 - 8:47:48 AM
Last modification on : Tuesday, May 25, 2021 - 2:54:02 PM

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  • HAL Id : hal-02951841, version 1

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Battle Karimi, Jean Villerd, Samuel Dequiedt, Sébastien Terrat, Nicolas Chemidlin Prévost-Bouré, et al.. Biogeographical design of soil microbial habitats. 5ème colloque du GDR de Génomique Environnementale, Oct 2019, La Rochelle, France. ⟨hal-02951841⟩

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