Correction to: Nature Communications 10.1038/s41467-019-10196-y, published online 15 May 2019.
The original version of the Supplementary Information associated with this Article contained confidential geographical information in Supplementary Figs. 1 and 2. The HTML has been updated to include a corrected version of these figures. In corrected Supplementary Fig. 1, locations have been randomly placed within a 50 km radius of the surveyed sites and survey locations have been removed from Supplementary Fig. 2.