Ecology of the above ground and underground insect fauna in relation to the respective floral changes of botanic garden grassland, West Bengal, India
The above ground and underground grassland ecosystem showed qualitative and quantitative variations in flora and fauna, being less in number on the above ground part and maximum in the underground part. In the experimental area of grassland, microarthropod population was maximum (59·04%) followed by the populations of grasshoppers (31·49%) and Collembola (9·47%). The fungi population and other soil microarthropods showed a direct correlation with the soil moisture. Maximum grasshoppers were recorded when the vegetative growth of grasses was maximum. Activities of collembola and fungi in “humification” and “mineralization” in the grassland ecosystem are schematically illustrated.