May 19, 2011

Contrasting diversity patterns of crenarchaeal, bacterial and fungal soil communities in an alpine landscape

PloS One
Lucie ZingerPhilippe Choler

Abstract

The advent of molecular techniques in microbial ecology has aroused interest in gaining an understanding about the spatial distribution of regional pools of soil microbes and the main drivers responsible of these spatial patterns. Here, we assessed the distribution of crenarcheal, bacterial and fungal communities in an alpine landscape displaying high turnover in plant species over short distances. Our aim is to determine the relative contribution of plant species composition, environmental conditions, and geographic isolation on microbial community distribution. Eleven types of habitats that best represent the landscape heterogeneity were investigated. Crenarchaeal, bacterial and fungal communities were described by means of Single Strand Conformation Polymorphism. Relationships between microbial beta diversity patterns were examined by using Bray-Curtis dissimilarities and Principal Coordinate Analyses. Distance-based redundancy analyses and variation partitioning were used to estimate the relative contributions of different drivers on microbial beta diversity. Microbial communities tended to be habitat-specific and did not display significant spatial autocorrelation. Microbial beta diversity correlated with soil pH. Fungal b...Continue Reading

Mentioned in this Paper

Carex foetida
Trifolium alpinum
Enzymes, antithrombotic
Alchemilla pentaphyllea
Recommended Daily Allowances
Doronicum grandiflorum
Filamentous fungus
Carex sempervirens
Archaea
L-ribulose-phosphate 4-epimerase Activity

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