Nature Communications 7: Article number: 11487 10.1038/ncomms11487 (2016); Published: May092016; Updated: June032016
The affiliation details for R. De Pol-Holz are incorrect in this Article. The correct affiliation details for this author are given below:
GAIA-Antartica, Universidad de Magallanes, Punta Arenas 01855, Chile.
