or Viruses a Structuring ... - Stéphan Jacquet

Two experiments were conducted to test whether viruses, small auto- and heterotrophic ... nutrient cycling, organic matter formation and decompo- ... nity structure (BCS) over a complete year in the mesot- .... laboratory, water sample was filtered through a series of .... May (M2) 2004, when both physical and chemical con-.
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Advances in Microbiology, 2013, 3, 233-248 doi:10.4236/aim.2013.33035 Published Online July 2013 (http://www.scirp.org/journal/aim)

Are Small Grazers and/or Viruses a Structuring Factor of the Free-Living Bacterial Community in Lake Geneva? Stéphan Jacquet*, Isabelle Domaizon, Cécile Chardon, Sébastien Personnic INRA, UMR CARRTEL, Station d’Hydrobiologie Lacustre, Equipe Biodiversité, Fonctionnement et Evolution des Ecosystèmes Lacustres, Thonon-les-Bains Cedex, France Email: *[email protected] Received May 3, 2013; revised June 5, 2013; accepted June 20, 2013 Copyright © 2013 Stéphan Jacquet et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

ABSTRACT Two experiments were conducted to test whether viruses, small auto- and heterotrophic nanoflagellates were key factors regulating at relatively short-term (4 days) and nearby periods (April vs. May) the bacterial community in surface waters of Lake Geneva. 2.5 L containing polycarbonate bottles were incubated in situ with either