Author Contributions:
PS and AB designed the research, PS and FB performed the research, PS,
AB and EH analysed the data, PS and AB wrote the paper, all authors
contributed to the final edits of the paper.
Keywords: Rapid evolution; Community biology; Microbial Ecology
Type: Letter
Word counts: Abstract - 184; Main text – 2979
Feature counts: Figures – 4, Tables – 1, References –
42