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. 2017 Dec 5;2(6):e00087-17. doi: 10.1128/mSystems.00087-17

TABLE 1 .

Bacterial community structure explained by host species identity, urban intensity, and tree isolation (street or park) and their interactionsa

Variableb Bray-Curtis dissimilarity
 Weighted Unifrac distance
F value R2 Pr(>F) F value R2 Pr(>F)
1st level
    Host species identity 4.97 19.38 0.001 5.03 19.73 0.001
    Urban intensity 4.66 6.05 0.001 5.07 6.63 0.001
    Tree isolation 2.78 1.81 0.001 2.92 1.91 0.009
2nd level
    Urban intensity*
    Tree isolation 1.33 1.73 0.056 NS NS NS
    Host species*
    Tree isolation 1.74 6.77 0.001 1.77 6.96 0.004
    Urban intensity*
    Host species 1.55 12.10 0.001 1.49 11.71 0.005
3rd level
    Urban intensity*
    Host species* 1.23 7.98 0.017 NS NS NS
    Tree isolation
a

Data represent results of PERMANOVA analysis of Bray-Curtis dissimilarities and weighted Unifrac distances. The models explained, respectively, 56% and 47% of the variation in bacterial taxonomical and phylogenetic community structure. Pr(>F), P value; NS, not significant.

b

An asterisk represents interaction between variables.