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ISME J. 2013 Mar;7(3):680-4. doi: 10.1038/ismej.2012.118. Epub 2012 Oct 11.

A decade of seasonal dynamics and co-occurrences within freshwater bacterioplankton communities from eutrophic Lake Mendota, WI, USA.

Author information

1
Civil and Environmental Engineering Department, University of Wisconsin-Madison, Madison, WI 53706, USA. kara@wisc.edu

Abstract

With an unprecedented decade-long time series from a temperate eutrophic lake, we analyzed bacterial and environmental co-occurrence networks to gain insight into seasonal dynamics at the community level. We found that (1) bacterial co-occurrence networks were non-random, (2) season explained the network complexity and (3) co-occurrence network complexity was negatively correlated with the underlying community diversity across different seasons. Network complexity was not related to the variance of associated environmental factors. Temperature and productivity may drive changes in diversity across seasons in temperate aquatic systems, much as they control diversity across latitude. While the implications of bacterioplankton network structure on ecosystem function are still largely unknown, network analysis, in conjunction with traditional multivariate techniques, continues to increase our understanding of bacterioplankton temporal dynamics.

PMID:
23051691
PMCID:
PMC3578560
DOI:
10.1038/ismej.2012.118
[Indexed for MEDLINE]
Free PMC Article

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