摘要：The present study reveals the diversity, abundance and composition of zooplankton in Ropar wetland. A total of 17 genera of zooplankton population were recorded and categorized into 5 different groups, i.e. Protozoa, Rotifera, Cladocera, Copepoda and Ostracoda at all the sites (S1, S2, S3 and S4) from October 2015 to September 2017. Among these, Protozoa and Rotifera were the dominant groups consisting of 6 genera each. Of all the seasons, summer season depicted the highest density of zooplankton at all the sites and lowest diversity during monsoon season. The diversity indices were observed to be maximum at S2 and S4 sites as compared to S1 and S3 sites indicating that the wetland is moderately polluted as the values of Shannon-Weaver diversity index for zooplankton are above two in different seasons. This signifies that this wetland receives pollution from various sources, but still has low impact. The correlation of zooplankton population has also been studied with different pyhsico-chemical parameters, which showed a negative correlation with dissolved oxygen (DO) and free CO2 at all the sites and also with total dissolved solids (TDS) at S3 site.
