Abstract
The population dynamics of the earthworm Amynthas alexandri was observed over 2 years in cultivated soils at Chanfi and Khurpatal near Nainital. Both hand sorting and formalin extraction were used to sample earthworms from the top 20 cm of soil. The density and biomass of earthworms fluctuated substantially during the year. Maximum density (58.4 m −2) and biomass (19.6 g m −2) were recorded in the rainy period and minimum during the dry period. Within the top 20 cm, 51–69% of the total numbers of earthworms were collected from the 0–10 cm soil layer and the proportion of biomass in the same layer was 51–83%. Most (80–90%) of the worms collected were clitellate. The C: N ratio of the soil decreased with increasing depth in both localities.
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