A Study of Relationship Between Zooplanktonic Community and Physico-chemical Prameters of water at Malsisar Dam in Jhunjhunun District of Rajasthan (India)

The purpose of this study was to investigate the presence of microalgae in an open artificial pond that served as a kind of freshwater environment. Scientists were able to positively identify one hundred different kinds of phytoplanktons at the Malsisar Dam, which is located in Jhunjhunun, Rajasthan. Sampling was conducted monthly from JANUARY 2024 to OCTOBER 2024 to assess species composition, abundance, and seasonal variations in relation to physicochemical parameters . A total of 39 zooplankton species were identified, belonging to four major groups: Rotifera (08 species), Protozoa (06 species), Arthropoda (24 species), and Annelida (01 species). Arthropoda dominated the community (55% of total abundance), followed by crustacea (41.66%), Insecta (20.83%), Copepoda (16.66%), Brachiopoda (8.33%), Ostracoda (8.33%) and Cladocera (4.16%). Additionally, variations in physicochemical parameters including as temperature, Sodium((Na+), potassium(K+), calcium(Ca++), magnesium(Mg++), chloride (Cl -) , phosphate (Po4-2), bicarbonate (Hco3-2), nitrate (No3-), turbidity, alkalinity and hardness were monitored during the course of this research.