Variations in the Physico-chemical Factors and Zooplankton Diversity during Monsoon and Post‑monsoon Period of a Bavori in JDB College Campus Kota, Rajasthan, India
Journal Title: INTERNATIONAL JOURNAL OF SCIENTIFIC STUDY - Year 2017, Vol 5, Issue 9
Abstract
Introduction: The zooplanktons play an important role in an aquatic ecosystem, and they are sensitive bioindicators too. Any change in water quality due to the addition of pollutants affects the diversity and abundance of the organisms residing in it. Aim: The present investigation was carried out to study an aquatic ecosystem in its simpler form. Till now most of the study of zooplankton was done in polluted aquatic systems. Therefore, we focused our attention on aquatic ecosystem which is free of any direct pollution source. Materials and Methods: The present study was conducted during the monsoon and the post-monsoon periods from July 2010 to December 2010 of a Bavori situated in the JDB college campus of Kota city. The physicochemical and biotic factors of the Bavori were observed. Among the abiotic factors pH, water temperature, dissolved oxygen, free CO2, alkalinity, salinity and total hardness were estimated. Results: The water temperature ranged from 20°C to 31°C. The pH always indicated alkaline values (8.3–8.9). The dissolved oxygen varies from 3.5 to 8.3; while free CO2 ranged from 2.0 to 8.9 mg/L. The alkalinity showed variation from 150 to 170 mg/L. The hardness observed from 38.0 to 62.0 mg/L, it is high in late monsoon. The zooplankton community protozoans, rotifers, annelids, and arthropods predominantly showed their existence 8 orders and 11 species of protozoans, 2 orders and 11 species of rotifers, one order with only one species of annelids, and 11 orders with 21 species of arthropods were seen. Conclusion: During the monsoon season abundance of the protozoans, rotifers, arthropods and annelids were seen. But with the onset of post-monsoon their quality and quantity decreased significantly. A total 22 orders and 43 species were observed in the present study. This showed a hotspot of species diversity which needs measures of its conservation to protect them.
Authors and Affiliations
Sarwat Nishat Khan, Saba Khan
Keywords
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