Correction to: Nature Communications https://doi.org/10.1038/s41467-020-15511-6, published online 2 April 2020.

The original version of this article contained an error in Fig. 4, in which the y axis in the inset 14C (pmC) vs mg C L−1 graph in Fig. 4c was skewed by ~2 units. This has been corrected in both the PDF and HTML versions of the article.