Diversity and evenness estimates for 16S rRNA gene libraries derived from phyllosphere bacteria of apple orchards differing in exposure to streptomycin.

aNumber of unique OTUs determined at the 97% sequence similarity threshold.b95% confidence intervals for the Shannon and Simpson’s indices are indicated between parentheses. Simpson’s index (D) is presented as 1-D; higher values indicate greater diversity.cP-values for the two-tailed t-test comparing sprayed (N = 4) and not sprayed (N = 4) orchards.