Nature Ecology & Evolution 1, 0119 (2017); published online 3 April 2017; corrected online 24 April 2017; 25 August 2017.

In Fig. 5 of the version of this Article originally published, the final number on the x axes of each panel was incorrectly written as 1.5; it should have read 7.5. This has now been corrected in all versions of the Article.