NMDS ordination of TRFLP fingerprints.

<p>Actinobacterial (top), α-proteobacterial (center) and bacterial (bottom) communities were sampled from dry Mediterranean (○), semi-arid (×), arid (▪), shoreline alluvial (□), shoreline stable sand (+) and shoreline shifting sand (•) sites. Restriction enzymes used are given in parentheses. Convex hulls connect samples from each site. NMDS axes do not possess biological meaning. Stress<12% for all ordinations, confirming a good correlation between the data and its ordination.