Bacterial evolution

During my PhD research I studied the evolution of bacterial populations from aquatic environments at the Cuatro Ciénegas Basin, México.

I am interested in how ecological and geographical factors influence the structure of bacterial populations. During my PhD I studied the evolution of members of the genus Exiguobacterium which are gram positive bacteria found in sediments and water environments within the valley. These bacterial strains are spread accross different aquatic systems with drastic differences on salinity and temperature. However, we found that bacteria were clustering depending on whether the belong to water or sediment environments. We think that niche partitioning in water and sediment could be the major driving force on the evolution of the genus Exiguobacterium at Cuatro Ciénegas.

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