Effect of grazers and viruses on bacterial community structure and production in two contrasting trophic lakes.

ABSTRACT:

Background

Over the last 30 years, extensive studies have revealed the crucial roles played by microbes in aquatic ecosystems. It has been shown that bacteria, viruses and protozoan grazers are dominant in terms of abundance and biomass. The frequent interactions between these microbiological compartments are responsible for strong trophic links from dissolved organic matter to higher trophic levels, via heterotrophic bacteria, which form the basis for the important biogeochemical roles of microbial food webs in aquatic ecosystems. To gain a better understanding of the interactions between bacteria, viruses and flagellates in lacustrine ecosystems, we investigated the effect of protistan bacterivory on bacterial abundance, production and structure [determined by 16S rRNA PCR-DGGE],

SUBMITTER: Berdjeb L 

PROVIDER: S-EPMC3114703 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature