Fig. 4
Diagrammatic representation of temporal variation in the composition of ECM communities at Puechabon from December 2007 to June 2009. Numbers are values of the Sorensen similarity coefficients, with Euclidian distances within parentheses, calculated between pairs of sampling seasons. Black arrows indicate sampling dates, with indication of the different seasons as follows: spring (white), summer (light grey), fall (dark grey) and winter (black)