Abstract

Biotic and abiotic characteristics shape the microbial communities in the soil environment. Manipulation of soil, performed by ants when constructing their nests, radically changes the soil characteristics and creates a unique environment, which differs in its composition, frequency and abundance of microbial taxa, from those in the reference soils. We sampled nests of the mound-building ant Formica exsecta, and the surrounding reference soils over a three-month period, and generated NGS (Illumina MiSeq), and T-RFLP data of the bacterial and fungal communities. We used ordination techniques and network analysis to disclose the community structure, and we assessed the variation in diversity, evenness and enrichment of taxa between the two environments. We also used indicator analysis to identify the potential core microbiome of the nests. Our results show that the bacterial and fungal communities, in the rigorously curated nest environment, are significantly different from those in the reference soils, in terms of community structure and enrichment of characteristic indicator taxa. We demonstrate that the nests represent a niche, where microbial species can adapt and diverge from the communities in the surrounding soils. Our findings contribute to our understanding of the composition and function of microbiomes in fragmented habitats.

Original languageEnglish
Article number107529
JournalSoil Biology & Biochemistry
Volume139
Number of pages11
ISSN0038-0717
DOIs
Publication statusPublished - Dec 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 1181 Ecology, evolutionary biology
  • 119 Other natural sciences
  • Microbial community structure
  • Wood ant nests
  • Indicator taxa
  • Fragmented habitat
  • Boreal forest
  • FORMICA-RUFA GROUP
  • IMPORTED FIRE ANTS
  • FUNGAL COMMUNITIES
  • NEST MOUNDS
  • BACTERIAL
  • ASSEMBLAGES
  • AQUILONIA
  • RESPONSES
  • NITROGEN
  • PRIMERS

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