Water samples from the solar saltern of South Bay
Salt Works (Chula Vista, CA, USA) were collected from three ponds with
different salinities: low (6–8%), medium (12–14%), and high (27–30%).
In this study, we used metagenomics to monitor the viral and microbial
communities in this and 3 other distinctive, stable, human-controlled
aquatic environments over time. The study environments included a
freshwater aquaculture system and three solar saltern environments of
differing salinity. Populations within the communities were monitored at
both the coarse-grained level of species and the fine-grained level of
strains. On the basis of our results, we propose a model for these
stable aquatic environments that is consistent with a Kill-the-Winner
cycling of predator and prey populations and in which sensitive
microbial strains are killed off by viral predators and are replaced by
phage-resistant strains of the same species.
Funding Source
NSF, Gordon and Betty Moore Foundation, ARCS
Fellowship, NSF Postdoctoral Fellowship #DBI-0511948, ATP/Kent Sea Tech
and EMBO ASTF366-2007 short-term fellowship.
Contact
Administrative Beltran Rodriguez-Brito (beltran.rodriguezbrito@gmail.com) Computational Science Research Center, San Diego State University (http://www.csrc.sdsu.edu/) San Diego, CA, USA
metagenomes 
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