Published Paper Details:

Benthic invertebrates are the microorganisms residing in the bottom area of an aquatic body and acts as bio-indicators, biofertilizers and biofilters . Getalsud Dam is an artificial Reservoir located about 35 kms away from the Ranchi city .The Dam was opened in 1971 and has been built on Subernrekha river(23o27'24"N 85o33'19"E ).The present study was conducted to investigate the seasonal variations of the microbenthic fauna of the Dam .Sampling was done for a period of 1 year from (March 2022 to Febuary 2023).Organisms were collected on a seasonal basis. The Macrobenthic communities showed dependency on habitat conditions .The samples were collected during Pre- monsoon (March-June) ,Monsoon(July-October) and Post -Monsoon(November-February)periods. ..The samples were collected from 4 stations in every season and the data was analysed statistically with appropriate tools .The abundance and species richness showed a significant difference between stations .In every season ,Station 1 was recorded with the lowest number of individuals and species .likewise ,a significant differences was also recorded between seasons in the rest three sites also. Pre-Monsoon samples comprised the lowest number of microbenthic fauna .Overall sampling showed 2921 species from different groups .The collected samples consisted species of Mollusca , Decapoda, Diptera ,Oligochaeta and Fingerlings .In Mollusca 1140 species were recorded whereas the collected samples of other species included 467 Decapoda ,346 Diptera,427 Oligochaetes ,547 Fingerlings .In Every season mollusca was the most abundant group.