Comparative Analysis of Methanogenic Communities in Different Laboratory-Scale Anaerobic Digesters

Figure 3

Nonmetric multidimensional scaling plots of T-RFLP profiles of mcrA amplicons digested with the restriction enzyme HaeIII. (a) Blue arrows indicate the vectors of process parameters which shaped community differences the most (significance factors , tested by Monte-Carlo permutation against 1000 random data sets). (b) Samples from reactors fed with the same substrate are marked with the same color. Red arrows indicate vectors of single T-RF (significance factors ) which shaped the communities the most.

(a)

(b)