Fig. 4From: Earthworms facilitated pepper (Capsicum annuum L.) growth via enhancing the population and function of arbuscular mycorrhizal fungi in a low-density polyethylene-contaminated soilThe effects of earthworms on arbuscular mycorrhizal (AM) fungi (population size, Shannon index and colonization rate), soil alkaline phosphatase (ALP) activity and pepper growth. Blank and gray lines indicate significant and non-significant effects, respectively. *p < 0.05; **p < 0.01; ***p < 0.001Back to article page