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Disentangling seasonal bacterioplankton population dynamics by high-frequency sampling

Author:
  • Markus V Lindh
  • Johanna Sjöstedt
  • Anders F Andersson
  • Federico Baltar
  • Luisa W Hugerth
  • Daniel Lundin
  • Saraladevi Muthusamy
  • Catherine Legrand
  • Jarone Pinhassi
Publishing year: 2014-11-18
Language: English
Pages: 76-2459
Publication/Series: Environmental Microbiology
Volume: 17
Issue: 7
Document type: Journal article
Publisher: Wiley-Blackwell
Additional info: © 2014 Society for Applied Microbiology and John Wiley & Sons Ltd.

Abstract english

Multiyear comparisons of bacterioplankton succession reveal that environmental conditions drive community shifts with repeatable patterns between years. However, corresponding insight into bacterioplankton dynamics at a temporal resolution relevant for detailed examination of variation and characteristics of specific populations within years is essentially lacking. During 1 year, we collected 46 samples in the Baltic Sea for assessing bacterial community composition by 16S rRNA gene pyrosequencing (nearly twice weekly during productive season). Beta-diversity analysis showed distinct clustering of samples, attributable to seemingly synchronous temporal transitions among populations (populations defined by 97% 16S rRNA gene sequence identity). A wide spectrum of bacterioplankton dynamics was evident, where divergent temporal patterns resulted both from pronounced differences in relative abundance and presence/absence of populations. Rates of change in relative abundance calculated for individual populations ranged from 0.23 to 1.79 day(-1) . Populations that were persistently dominant, transiently abundant or generally rare were found in several major bacterial groups, implying evolution has favoured a similar variety of life strategies within these groups. These findings suggest that high temporal resolution sampling allows constraining the timescales and frequencies at which distinct populations transition between being abundant or rare, thus potentially providing clues about physical, chemical or biological forcing on bacterioplankton community structure.

Keywords

  • Aquatic Organisms/genetics
  • Bacteria/genetics
  • Baltic States
  • Biodiversity
  • Genetic Variation/genetics
  • Plankton/genetics
  • Population Dynamics
  • RNA, Ribosomal, 16S/genetics
  • Seasons

Other

Published
  • ISSN: 1462-2920
Portrait of Johanna Sjöstedt
E-mail: johanna [dot] sjostedt [at] biol [dot] lu [dot] se

Postdoctoral fellow

Division aquatic ecology

+46 46 222 84 38

+46 73 913 31 19

E-C111

50

Researcher

Aquatic Ecology

50

Research group

Aquatic Ecology

Projects

 

Postdoc host

  • Emma Kritzberg
  • Eva Lindström, Uppsala University
  • Silke Langenheder, Uppsala University

Downloads & Links

Raw data for the artikel Effect of repeated disturbances on resistance and resilience in aquatic bacterioplankton communities (Zip; 2 MB)