Spatial variability overwhelms seasonal patterns in bacterioplankton communities across a river to ocean gradient

Caroline S. Fortunato, Lydie Herfort, Peter Zuber, Antonio Baptista, Byron C. Crump

Research output: Contribution to journalArticle

130 Citations (Scopus)

Abstract

Few studies of microbial biogeography address variability across both multiple habitats and multiple seasons. Here we examine the spatial and temporal variability of bacterioplankton community composition of the Columbia River coastal margin using 16S amplicon pyrosequencing of 300 water samples collected in 2007 and 2008. Communities separated into seven groups (ANOSIM, P850 m). The ordination of these samples was correlated with salinity (ρ=-0.83) and depth (ρ=-0.62). Temporal patterns were obscured by spatial variability among the coastal environments, and could only be detected within individual groups. Thus, structuring environmental factors (for example, salinity, depth) dominate over seasonal changes in determining community composition. Seasonal variability was detected across an annual cycle in the river, estuary and plume where communities separated into two groups, early year (April-July) and late year (August-Nov), demonstrating annual reassembly of communities over time. Determining both the spatial and temporal variability of bacterioplankton communities provides a framework for modeling these communities across environmental gradients from river to deep ocean.

Original languageEnglish (US)
Pages (from-to)554-563
Number of pages10
JournalISME Journal
Volume6
Issue number3
DOIs
StatePublished - Mar 2012

Fingerprint

bacterioplankton
Rivers
Oceans and Seas
oceans
seasonal variation
rivers
community composition
Salinity
ocean
river
salinity
environmental gradient
biogeography
ordination
annual cycle
Estuaries
Columbia River
coastal zone
environmental factor
plume

Keywords

  • 16S amplicon pyrosequencing
  • coastal ocean
  • Columbia River
  • gradient
  • spatial variability
  • temporal variability

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Microbiology

Cite this

Spatial variability overwhelms seasonal patterns in bacterioplankton communities across a river to ocean gradient. / Fortunato, Caroline S.; Herfort, Lydie; Zuber, Peter; Baptista, Antonio; Crump, Byron C.

In: ISME Journal, Vol. 6, No. 3, 03.2012, p. 554-563.

Research output: Contribution to journalArticle

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