Correction to: Nature Climate Change https://doi.org/10.1038/s41558-018-0373-9, published online 17 December 2018.

In the version of Letter originally published, there was an error in Fig. 3. Specifically, the y-axis label alongside panels 3a,c, originally reading “Foliar [N] (mg g–1)” should instead have read “Foliar [N] (%).”