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Research on the Limnology of Waterpark Pond, a Wetland in Nepalgunj, Banke, Nepal

Author Affiliations

  • 1Department of Zoology, Mahendra Multiple Campus Tribhuvan University, Nepalgunj, Nepal

Res. J. Animal, Veterinary and Fishery Sci., Volume 12, Issue (1), Pages 1-11, May,24 (2024)

Abstract

Wetland ecology depends critically on the physico-chemical characteristics of water. In order to determine its impact on plankton population, and fish population, the various physico-chemical parameters of the Waterpark pond were examined between January 2022 and December 2022. Physico-chemical and biological parameters were analyzed form the sample water and the author noted that the temperature of the water ranged from 9.5 to 27.6°C, transparency from 28.6 to 38.7 cm, dissolved oxygen from 5.8 to 8.9 ppm, free carbon dioxide from 14.0 to 26.0 ppm, pH from 7.2 to 9.8, and total alkalinity between 136.0 and 294.0 ppm. The phosphate ranged from 1.02-1.08 ppm, and the nitrate ranged from 1.07 to 1.38 ppm. 26 Phytoplankton species and 22 zooplankton species were identified so, the pond is rich in plankton diversity. The dominant phytoplankton species observed are of Chlorophycae and the dominant zooplanktons are of Rotifera. Plankton showed a bimodal pattern of seasonal variation, with first spike in July and a second spike in January. It was concluded that the physico-chemical and biological parameters of the Waterpark pond are favorable for freshwater aquaculture. Statistically neither phytoplanktons nor zooplanktons are very strongly correlated with temperature, pH, DO and Nitrate of the pond water. Most of them showed weak and moderate correlation with above parameters. The members of Cyanophycae and Copepods showed strong correlation with Nitrate.

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