NDLI: Vertical Distribution of Functional Potential and Active Microbial Communities in Meromictic Lake Kivu

Content Provider	Springer Nature Link
Author	İnceoğlu, Özgul Llirós, Marc Crowe, Sean A. García Armisen, Tamara Morana, Cedric Darchambeau, François Borges, Alberto V. Descy, Jean Pierre Servais, Pierre
Copyright Year	2015
Abstract	The microbial community composition in meromictic Lake Kivu, with one of the largest CH4 reservoirs, was studied using 16S rDNA and ribosomal RNA (rRNA) pyrosequencing during the dry and rainy seasons. Highly abundant taxa were shared in a high percentage between bulk (DNA-based) and active (RNA-based) bacterial communities, whereas a high proportion of rare species was detected only in either an active or bulk community, indicating the existence of a potentially active rare biosphere and the possible underestimation of diversity detected when using only one nucleic acid pool. Most taxa identified as generalists were abundant, and those identified as specialists were more likely to be rare in the bulk community. The overall number of environmental parameters that could explain the variation was higher for abundant taxa in comparison to rare taxa. Clustering analysis based on operational taxonomic units (OTUs at 0.03 cutoff) level revealed significant and systematic microbial community composition shifts with depth. In the oxic zone, Actinobacteria were found highly dominant in the bulk community but not in the metabolically active community. In the oxic–anoxic transition zone, highly abundant potentially active Nitrospira and Methylococcales were observed. The co-occurrence of potentially active sulfur-oxidizing and sulfate-reducing bacteria in the anoxic zone may suggest the presence of an active yet cryptic sulfur cycle.
Starting Page	596
Ending Page	611
Page Count	16
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	70
Issue Number	3
e-ISSN	1432184X
Language	English
Publisher	Springer US
Publisher Date	2015-04-26
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Bacteria Archaea Pyrosequencing Active Bulk qPCR Network Abundant and rare Meromictic lake Microbiology Ecology Microbial Ecology Geoecology/Natural Processes Nature Conservation Water Quality/Water Pollution
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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