Implications of Soil Biodiversity for Sustainable Organic Matter Management - Sustainable Management of Soil Organic Matter - page 366

A number of pseudomonad isolates were taken from each plot for
genetic fingerprinting. This enabled comparison of the genetic structure of
the group in the two plots, to look for shifts that might be due to the differ-
ent organic carbon and heavy metal inputs. Fingerprint analysis, taken at
one time point, showed that the individual isolates from the two plots were
different. It also indicated that the population structure in the two groups
was different, with some dominant groups apparent in the FYM plot
whereas there were none in the Sewage plot (Fig. 5.3.3). Thus, the Sewage
Fig. 5.3.2. Microbial counts as colony-forming units (c.f.u. g − 1 ) on different selective media for
two soils receiving either FYM or sewage sludge. Error bars are standard deviations of the mean of
five replicates on each medium.
Fig. 5.3.3. Comparison of genetic diversity and population structure in two soils receiving either
FYM or sewage sludge. Analysis of 26 isolates (FYM plot) and 28 isolates (Sewage plot).