Effects of patch connectivity and heterogeneity on metacommunity structure of planktonic bacteria and viruses

Author(s)
Steven A. J. Declerck, Christian Winter, Jonathan B. Shurin, Curtis A. Suttle, Blake Matthews
Abstract

Dispersal limitation is generally considered to have little influence on the spatial structure of biodiversity in microbial metacommunities. This notion derives mainly from the analysis of spatial patterns in the field, but experimental tests of dispersal limitation using natural communities are rare for prokaryotes and, to our knowledge, non-existent for viruses. We studied the effects of dispersal intensity (three levels) and patch heterogeneity (two levels) on the structure of replicate experimental metacommunities of bacteria and viruses using outdoor mesocosms with plankton communities from natural ponds and lakes. Low levels of dispersal resulted in a decrease in the compositional differences (beta diversity) among the communities of both bacteria and viruses, but we found no effects of patch heterogeneity. The reductions in beta diversity are unlikely to be a result of mass effects and only partly explained by indirect dispersal-mediated interactions with phytoplankton and zooplankton. Our results suggest that even a very limited exchange among local communities can alter the trajectory of bacterial and viral communities at small temporal and spatial scales. The ISME Journal (2013) 7, 533-542; doi:10.1038/ismej.2012.138; published online 22 November 2012

Organisation(s)
Functional and Evolutionary Ecology
External organisation(s)
University of British Columbia (UBC), Netherlands Institute of Ecology (NIOO-KNAW), Lab Aquat Ecol & Evolutionary Biol, Eidgenössische Anstalt für Wasserversorgung, Abwasserreinigung und Gewässerschutz
Journal
The ISME Journal: multidisciplinary journal of microbial ecology
Volume
7
Pages
533-542
No. of pages
10
ISSN
1751-7362
DOI
https://doi.org/10.1038/ismej.2012.138
Publication date
03-2013
Peer reviewed
Yes
Austrian Fields of Science 2012
106020 Limnology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/effects-of-patch-connectivity-and-heterogeneity-on-metacommunity-structure-of-planktonic-bacteria-and-viruses(66644d00-8b76-45bd-99b2-01f57e3828d2).html