Table 3 Summary of permutational analysis of variance (PERMANOVA) results* assessing differences in gut bacterial composition at bacterial class, genus, and amplicon sequence variant (ASV)-levels for the subset of Southern Beaufort Sea (SB) polar bears using Bray–Curtis distances.

From: Distinct gut microbiomes in two polar bear subpopulations inhabiting different sea ice ecoregions

Class-level

Analysis of Variance Table

 

Df

SumsOfSqs

MeanSqs

F.Model

R2

Pr(> F)

Sex/age class

2

0.319

0.160

1.274

0.053

0.233

Body Condition

1

0.209

0.209

1.670

0.035

0.142

FA_PC1

1

0.126

0.126

1.005

0.021

0.411

FA_PC2

1

0.262

0.262

2.092

0.043

0.085

Capture year

1

0.261

0.261

2.080

0.043

0.074

Residuals

39

4.886

0.125

 

0.806

 

Total

45

6.063

  

1

 

Genus-level

Analysis of Variance Table

 

Df

SumsOfSqs

MeanSqs

F.Model

R2

Pr(> F)

Sex/age class

2

0.810

0.405

1.776

0.071

0.023

Body Condition

1

0.209

0.208

0.914

0.018

0.527

FA_PC1

1

0.504

0.504

2.208

0.044

0.024

FA_PC2

1

0.439

0.439

1.925

0.039

0.034

Capture year

1

0.483

0.483

2.118

0.043

0.019

Residuals

39

8.895

0.228

 

0.784

 

Total

45

11.339

  

1

 

ASV-level

Analysis of Variance Table

 

Df

SumsOfSqs

MeanSqs

F.Model

R2

Pr(> F)

Sex/age class

2

0.719

0.359

1.568

0.063

0.057

Body Condition

1

0.205

0.205

0.894

0.018

0.519

FA_PC1

1

0.557

0.557

2.431

0.049

0.009

FA_PC2

1

0.442

0.442

1.927

0.039

0.023

Capture year

1

0.485

0.485

2.116

0.043

0.024

Residuals

39

8.937

0.229

 

0.788

 

Total

45

11.344

  

1

 
  1. *Significant terms are in bold.