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

In contrast, we found a marginally significant ( p = 0.0681) decrease in ragweed biomass due to earthworm activity, suggesting that ragweed did not benefit from the earthworm-induced improvements in nutrients and soil structure, or that earthworms might have fed on roots as because they were foraging less on the surface [ 46 ] Our results show that the positive influence of earthworms on plant growth and soil properties can be reduced by light pollution.

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