Table 2 Effect of landscape fragmentation on genetic diversity (AR differential) and genetic differentiation (FST) between pairs of sites.

From: Riverscape genetics in brook lamprey: genetic diversity is less influenced by river fragmentation than by gene flow with the anadromous ecotype

Model

Effect on allelic richness

Effect on genetic differentiation

 

AIC

F

p

Slope

R2m

R2c

AIC

F

p

Slope

R2m

R2c

Model 1

−27.0

   

0.204

0.604

−230.8

   

0.043

0.183

Distance

 

1.30

<0.001

0.008

   

0.993

0.322

0.0026

  

Barrier height

 

14.12

0.25

0.010

   

0.771

0.383

0.0005

  

Model 2

−25.7

   

0.091

0.505

−245.0

   

0.032

0.153

Barrier height

 

10.38

0.0018

0.026

   

2.615

0.110

0.0036

  

Model 3

−35.3

   

0.212

0.586

−241.9

   

0.036

0.188

Distance

 

26.45

<0.001

0.009

   

2.432

0.123

0.0008

  
  1. Mixed linear models were used with river and region fitted as random factors. Model 1 = distance + barrier size, Model 2 = barrier size, Model 3 = distance. AIC are provided for each model along with p-values and slope of the tested variables. R²m corresponds to the marginal R² and represents the variance explained by fixed effects. R²c corresponds to the conditioned R² and represents the variance explained by both fixed and random effects. Genetic differentiation was linearized using: Y = FST/(1 − FST).
  2. Significant p-values are highlighted in bold.
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