Comparison of densities of earthworms with and without clitellum amongst study regions. Different letters indicate statistically-significant differences (p < 0.05). 

 
  Part of: Kishimoto-Yamada K, Minamiya Y (2020) Earthworm species and density in semi-natural grasslands on rice paddy levees in Japanese satoyama. Biodiversity Data Journal 8: e56531. https://doi.org/10.3897/BDJ.8.e56531