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Distribution patterns of microbial communities in ultramafic landscape: A metagenetic approach highlights the strong relationships between diversity and environmental traits

Bordez L., Jourand Philippe, Ducousso Marc, Carriconde Fabian, Cavaloc Yvon, Santini Sébastien, Claverie Jean-Michel, Wantiez L., Leveau Antoine, Amir Hamid. 2016. Distribution patterns of microbial communities in ultramafic landscape: A metagenetic approach highlights the strong relationships between diversity and environmental traits. Molecular Ecology, 25 (10) : pp. 2258-2272.

Journal article ; Article de revue à facteur d'impact
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Url - jeu de données : https://doi.org/10.5061/dryad.4fb1m

Quartile : Q1, Sujet : ECOLOGY / Quartile : Q1, Sujet : EVOLUTIONARY BIOLOGY / Quartile : Q1, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Abstract : Microbial species richness and assemblages across ultramafic ecosystems were investigated to assess the relationship between their distributional patterns and environmental traits. The structure of microorganism communities in the Koniambo massif, New Caledonia, was investigated using a metagenetic approach correlated with edaphic and floristic factors. Vegetation cover and soil properties significantly shaped the large phylogenetic distribution of operational taxonomic unit within microbial populations, with a mean per habitat of 3,477 (± 317) for bacteria and 712 (± 43) for fungi. Using variance partitioning, we showed that the effect of aboveground vegetation was the most significant descriptor for both bacterial and fungal communities. The floristic significant predictors explained 43% of the variation both for the bacterial and fungal community structures, while the edaphic significant predictors explained only 32% and 31% of these variations, respectively. These results confirm the previous hypothesis, that the distribution of microorganisms was more structured by the vegetation cover rather than the edaphic characteristics and that microbial diversity is not limited in ultramafic ecosystems.

Mots-clés Agrovoc : Flore du sol, Dynamique des populations, Fertilité du sol, Écologie microbienne, Couverture végétale, Facteur du milieu, Facteur édaphique, Phylogénie, Taxonomie, Bacteria, Champignon du sol, Biodiversité, Biologie du sol, Type de sol, Métal lourd, Sol minéral, Écosystème, génomique

Mots-clés géographiques Agrovoc : Nouvelle-Calédonie

Classification Agris : P34 - Soil biology
P35 - Soil fertility
P36 - Soil erosion, conservation and reclamation
F40 - Plant ecology

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Bordez L., UNC (NCL)
  • Jourand Philippe, IRD (FRA)
  • Ducousso Marc, CIRAD-BIOS-UMR LSTM (FRA)
  • Carriconde Fabian, IAC (NCL)
  • Cavaloc Yvon, UNC (NCL)
  • Santini Sébastien, CNRS (FRA)
  • Claverie Jean-Michel, CNRS (FRA)
  • Wantiez L., UNC (NCL)
  • Leveau Antoine, Koniambo Nickel SAS (NCL)
  • Amir Hamid, UNC (NCL)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/580284/)

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