One-sided paired t-tests were used for the comparisons
between organic ally and conventionally managed soils for all
measured and calculated physical, chemical, and biological
variables. For analysis of the DGGE banding patterns distance
matrices were calculated, based on the presence/absence of bands,
using Pearson correlation matrices, and clustering was performed
using the UPGMA algorithm. The 16S rDNA band intensities from
each lane were imported into Excel files for further analysis. The
bacterial diversity in the samples was estimated as species
richness S and the Shannon index of bacterial diversity H0
(Diepeningen et al., 2006). Species richness S is equal to the
number of DGGE fragments detected. The Shannon index H0 = S
log(Pi), with Pi = ni/N, where ni is the intensity of a fragment (area
of a peak) and N is the sum of all peak areas in a lane
One-sided paired t-tests were used for the comparisons
between organic ally and conventionally managed soils for all
measured and calculated physical, chemical, and biological
variables. For analysis of the DGGE banding patterns distance
matrices were calculated, based on the presence/absence of bands,
using Pearson correlation matrices, and clustering was performed
using the UPGMA algorithm. The 16S rDNA band intensities from
each lane were imported into Excel files for further analysis. The
bacterial diversity in the samples was estimated as species
richness S and the Shannon index of bacterial diversity H0
(Diepeningen et al., 2006). Species richness S is equal to the
number of DGGE fragments detected. The Shannon index H0 = S
log(Pi), with Pi = ni/N, where ni is the intensity of a fragment (area
of a peak) and N is the sum of all peak areas in a lane
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