Fig. 4

a) Total mycorrhizal root colonisation in P. azorica in each island, b) in the four forest fragments (Terra Brava, TB; Serreta, TS; Lombo Gordo, SG; Ribeira Quente, SR) and c) obtained during three sampling dates (September 2012, AU⁽¹⁾; May 2013, SP; September 2013, AU⁽²⁾). Bold line represents median, x signals the media and the bottom and top of the box represent lower and upper quartiles. Different letters above each box indicate significant differences in total AMF colonisation between fragments or sampling date (Kruskal-Wallis test, p < 0.05)