Abstract Correction to: The ISME Journal (2014) 8, 1645–1658; doi:10.1038/ismej.2014.18; published online 20 February 2014 Since the publication of this article, the authors have noticed an error in Supplementary Table S2. The correct table is shown below. The error has now been rectified, and the correct Supplementary Information accompanies the online version of the original article.