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Subject: Fisheries Resource Management × Author: Ambrish Singh × Start date: 2000 × Thesis Type: M.F.Sc ×
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    ThesisItemOpen Access
    Assessment of plankton diversity and hydro biological parameters at selected sites of Yamuna river
    (CCSHAU, Hisar, 2023-07) Ambrish Singh; Ravikant
    The study was conducted to assess the plankton diversity and hydrobiological parameters at selected sites of Yamuna river. The plankton diversity and hydrobiological parameters were observed from June to November, 2022. The 96 genera of planktons recorded. Out of this 76 genera of phytoplankton recorded belonging to class Bacillariophyceae, Chlorophyceae, Cyanophyceae, Euglenophyceae, Dianophyceae and 20 genera of zooplankton were recorded belonging to Protozoa, Copepoda, Cladocera, and Rotifera have been identified in all the sampling sites during the study period. Shannon and Weaver diversity index for plankton was reported maximum in Tajewala barrage (1.984) followed by Wazirabad barrage (1.972) and Okhla barrage (1.871). The maximum temperature value recorded during pre-monsoon and minimum in the post-monsoon season was recorded in all the locations. The pH values of water in Tajewala, Wazirabad, and Okhla barrages were recorded from 7.3 to 8.4. The highest electrical conductivity values were observed in the Okhla barrage (1,527.25 μs/cm), followed by the Wazirabad barrage (1,227.75 μs/cm) and the Tajewala barrage (323.75 μs/cm). The DO levels ranged from 5.33 to 6.57 mg/L, 4.13 to 5.25 mg/L, and 1.7 to 3.6 mg/L. Salinity, free carbon dioxide, ammonia, TDS, Bicarbonates, nitrate, nitrite, chloride, calcium and magniseum varied at Tajewala, Wazirabad, and Okhla barrages at different times during the study period. The present investigation shows that the maximum level of presumptive coliform count recorded at Tajewala barrage maximum in November 2022 and lowest in September 2022. At Wazirabad, the barrage was recorded maximum in June and November, months. At Okhla barrage it was maximum recorded in November and lowest in July, August and September. This study revealed that the Tajewala barrage had the highest plankton diversity compared to Wazirabad and Okhla barrages. The water quality parameters measured, including temperature, pH, electrical conductivity, and dissolved oxygen levels, varied across the three barrages, indicating the potential influence of various factors such as industrial and municipal waste disposal and sewerage effluents.