Fig. 4From: Artificial light at night reduces earthworm activity but increases growth of invasive ragweedMean ragweed plant height and plant biomass in response to light pollution (A, B) and earthworm presence (C, D). Abbreviations: D…dark, L…light, EW-…Earthworms absent, EW+…Earthworms present, n.s….not significant, *** p-value < 0.001, ** p-value < 0.01, * p-value < 0.05. N = 6Back to article page