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Table 2 Change in earthworm numbers and biomass from start to end of the experiment in response to light pollution (LP), plant species (PS), sowing depth (SD), their interactions, and the covariates initial worm weight and soil moisture. ChiSq = Likelihood ratio Chi squared, df = degrees of freedom, Significance code for Pr(> ChiSq) and Pr(> F): *** <0.001, ** <0.01, * <0.05

From: Artificial light at night reduces earthworm activity but increases growth of invasive ragweed

 

Earthworm number change

Earthworm biomass change

Parameters

Df

Pr (> ChiSq)

Df

Pr (> F)

Light pollution (LP)

1

0.015*

1

0.169

Plant species (PS)

1

0.573

1

0.097

Sowing depth (SD)

1

0.220

1

0.305

LP x PS

1

0.474

1

0.371

LP × SD

1

0.891

1

0.429

PS × SD

1

0.198

1

0.069

LP × SD × PS

1

0.054

1

0.437

Initial worm weight (g)

1

0.118

1

0.011*

Soil moisture (%)

1

0.056

1

0.547

Residuals

  

33

 
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BMC Ecology and Evolution

ISSN: 2730-7182

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