Max has been busy in summer 2015! He had a paper titled, “Strong upslope shifts in Chimborazo’s vegetation over two centuries since Humboldt” published in PNAS -http://www.pnas.org/content/112/41/12741
AND
A paper titled, “Pervasive and strong effects of plants on soil chemistry: a meta-analysis of individual plant ‘Zinke’ effects” published in Proceedings B – http://rspb.royalsocietypublishing.org/content/282/1812/20151001.abstract
Make sure you check them out!