Table 1 p values from Kruskal-Wallis tests of alpha richness and diversity indices considered in this study

Analysis level

Observed richness

Shannon

Inv. Simpson

Evenness

Observed richness

Shannon

Inv. Simpson

Evenness

Treatment

0.29

0.96

0.89

1

< 0.05

0.57

0.75

0.98

Time

< 0.001

< 0.001

< 0.001

< 0.05

< 0.001

< 0.001

0.08

0.19

Treatment-Time

< 0.001

< 0.05

0.10

0.42

< 0.001

< 0.05

0.63

0.83