Table 2 Hierarchical Analysis of Variance (ANOVA) summary comparing total abundance (individuals per meter squared),species density (number of species per sample) and species diversity (Shannon Wiener Diversity Index) across several temporaland spatial scales using transformed log(X + 1) data.

From: Low level off-road vehicle (ORV) traffic negatively impacts macroinvertebrate assemblages at sandy beaches in south-western Australia

 

DF

Total Abundance

Density

Species Diversity

Main effects

 Category (Impact vs Control)

1

<0.001

<0.001

<0.001

 Beach (nested)

7

<0.001

<0.001

<0.001

 Season

1

<0.001

<0.001

0.186

 Zone

1

<0.001

<0.001

0.010

Two-way interactions

 Category × Season

1

0.133

0.320

0.015

 Beach × Season

7

0.002

<0.001

0.002

 Category × Zone

1

<0.001

<0.001

0.050

 Beach × Zone

7

<0.001

<0.001

0.171

 Season × Zone

1

   

Three-way interactions

 Category × Season × Zone

1

0.966

0.146

0.308

 Beach × Zone × Season

7

0.792

0.170

0.583

 Residual

444

 Total

479

Back to article page