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Table 2 Statistical output of the four linear models that tested for the effect of nest, depth, and soil type (chamber soil, control near, and control far) on each of four alpha diversity measures (Shannon, Faith’s phylogenetic distance (PD), Pielou’s evenness, and observed ASV’s). Number of samples in each statistical model N = 155. Effects that are statistically significant (p-value < 0.05) are in bold and results of the post-hoc analysis are shown in Figs. 6 and 7

From: Social organization and physical environment shape the microbiome of harvester ants

Diversity measure

Effect

Sum of Squares

DF

F value

p-value

Shannon

Nest

2.675

4

5.524

< 0.001

Depth

0.037

1

0.306

0.581

Soil type

0.482

2

1.993

0.140

Faith’s PD

Nest

49.53

4

1.885

0.116

Depth

13.96

1

2.125

0.147

Soil type

9.65

2

0.735

0.481

Pielou’s Evenness

Nest

0.014

4

9.368

< 0.0001

Depth

< 0.001

1

0.080

0.777

Soil type

0.005

2

6.376

0.002

Observed ASVs

Nest

19,929

4

3.340

0.012

Depth

135

1

0.093

0.764

Soil type

665

2

0.223

0.801