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Table 2 OTUs shared between birds and their burrow environments. Significance was determined by using Welch’s two-sample t test. Birds shared on average 4.6% (± 0.98) OTUs with deep burrow soil and did not share more with their own burrow environment than with a randomly chosen “away” burrow (p > 0.05)

From: Morphological and genetic factors shape the microbiome of a seabird species (Oceanodroma leucorhoa) more than environmental and social factors

Comparison

Burrow soil site

Test statistic t

P value

Burrow

Mean % shared OTUs

95% CI

n

Female uropygial gland

Deep

0.135

0.894

Home

4.53

2.54

13

Away

4.59

2.24

13

Mid

0.667

0.513

Home

3.32

1.39

13

Away

3.33

1.43

13

Surface

0.008

0.994

Home

3.08

1.37

13

Away

3.15

1.58

13

Female brood patch

Deep

− 0.470

0.644

Home

5.25

1.94

14

Away

5.62

2.73

14

Mid

− 0.404

0.691

Home

4.36

1.63

14

Away

4.07

1.43

14

Surface

− 0.177

0.861

Home

3.81

1.26

14

Away

3.86

1.62

14

Male uropygial gland

Deep

0.455

0.673

Home

3.79

1.63

8

Away

3.60

2.40

8

Mid

− 0.748

0.489

Home

2.99

2.22

8

Away

3.05

2.22

8

Surface

− 0.482

0.653

Home

2.53

1.57

8

Away

2.49

1.71

8

Male brood patch

Deep

− 0.238

0.820

Home

4.22

1.64

7

Away

3.63

1.57

7

Mid

0.342

0.748

Home

3.00

1.61

7

Away

3.07

1.63

7

Surface

0.457

0.667

Home

2.48

1.03

7

Away

2.61

1.22

7