FIG. 4.

(A) PC ordination of the overall variance in depth-resolved bacterial community composition as analyzed by T-RFLP fingerprinting. The depths at which specific fingerprints were retrieved are indicated next to the ordination points. Communities marked by an open square were subsequently selected for cloning. Inferred PC factors 1 and 2 accounted for 21.3% and 18% of total variance, respectively. (B) Loading plot of inferred PC factors on specific T-RFs. The identities (bp) of selected T-RFs with characteristic factor loading are indicated.