Microbial ecology of full-scale wastewater treatment systems in the Polar Arctic Circle: Archaea, Bacteria and Fungi

Alejandro Gonzalez-Martinez*, Maija Sihvonen, Barbara Munoz-Palazon, Alejandro Rodriguez-Sanchez, Anna Mikola, Riku Vahala

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

38 Citations (Scopus)
133 Downloads (Pure)

Abstract

Seven full-scale biological wastewater treatment systems located in the Polar Arctic Circle region in Finland were investigated to determine their Archaea, Bacteria and Fungi community structure, and their relationship with the operational conditions of the bioreactors by the means of quantitative PCR, massive parallel sequencing and multivariate redundancy analysis. The results showed dominance of Archaea and Bacteria members in the bioreactors. The activated sludge systems showed strong selection of Bacteria but not for Archaea and Fungi, as suggested by diversity analyses. Core OTUs in influent and bioreactors were classified as Methanobrevibacter, Methanosarcina, Terrestrial Group Thaumarchaeota and unclassified Euryarchaeota member for Archaea; Trichococcus, Leptotrichiaceae and Comamonadaceae family, and Methylorosula for Bacteria and Trichosporonaceae family for Fungi. All influents shared core OTUs in all domains, but in bioreactors this did not occur for Bacteria. Oligotype structure of core OTUs showed several ubiquitous Fungi oligotypes as dominant in sewage and bioreactors. Multivariate redundancy analyses showed that the majority of core OTUs were related to organic matter and nutrients removal. Also, there was evidence of competition among Archaea and Fungi core OTUs, while all Bacteria OTUs were positively correlated among them. The results obtained highlighted interesting features of extremely cold temperature bioreactors.

Original languageEnglish
Article number2208
Number of pages11
JournalScientific Reports
Volume8
DOIs
Publication statusPublished - 2 Feb 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • ACTIVATED-SLUDGE
  • MEMBRANE BIOREACTOR
  • NITROGEN REMOVAL
  • TREATMENT PLANTS
  • NY-ALESUND
  • DIVERSITY
  • COMMUNITY
  • SVALBARD
  • DYNAMICS
  • SOIL

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