Data from: Experimental evolution of halophiles: rapid divergence along a multidimensional niche

This data was collected during the study entitled "Experimental evolution of halophiles: rapid divergence along a multidimensional niche."

We explored multidimensional niche breadth evolution among two halophilic species, an archaeon (Halobacterium salinarum) and a bacterium (Salinibacter ruber). We propagated each species in rich and poor media for 60 generations and measured associated changes across novel conditions. In particular, we isolated the effects of selection history on axes of salinity and resource abundance, documenting whether shifts in niche breadth are context-dependent.

Growth curves were generated via daily measurements over 5 days (4 replicate populations per treatment), with the area under the curve used as a proxy for absolute fitness in a given environment. Relative fitness was calculated as the fitness of the derived populations (following 10 transfers in their respective environment) divided by the fitness of the ancestral populations.