Correction to: The ISME Journal (2016) 10, 400–415; doi:10.1038/ismej.2015.121; published online 21 August 2015

Updated online 21 September 2016: This article was originally published under NPG’s License to Publish, but has now been made available under a CC BY-NC-SA 4.0 license. The PDF and HTML versions of the paper have been modified accordingly.