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Comparative Study on Physicochemical and Biological Parameters of Water Among Fish Culture and Reconstructed Pond at Jahangirnagar University Campus, Bangladesh

R. S. Lucy
Department of Environmental Sciences, Jahangirnagar University, Dhaka-1342, Bangladesh

M. E. Huda
Department of Environmental Sciences, Jahangirnagar University, Dhaka-1342, Bangladesh

S. M. D. Islam*
Department of Environmental Sciences, Jahangirnagar University, Dhaka-1342, Bangladesh

Abstract/ Executive Summary:

The study was conducted to investigate the physicochemical and biological parameters of fish culture and reconstructed pond at Jahangirnagar university campus. The physicochemical parameters of water in culture and reconstructed pond were analyzed during February to September, 2014 and the mean value of temperature were 30.21±0.89 ºC and 29.96±0.91 ºC, pH value were 7.20±0.29 and 6.97±0.39, Dissolve Oxygen (DO) value were 6.44±0.40mg^-1 and 6.22±0.30mg^-1, Biochemical Oxygen Demand (BOD5) value were 1.02±0.32mg^-1 and 0.78±0.18mg^-1, Total Dissolve Solid (TDS) were 0.69±0.04mg^-1 and 0.64±0.04mg^-1, Electric Conductivity (EC) value were 215.38±21.27µScm^-1 and 128.58±1.10µScm^-1. From the study of biological parameter, it was found that Chlorophyceae and Euglenophyceae were dominant in studied ponds and the abundance of phytoplankton are in the order of Chlorophyceae >Euglenophyceae > Bacillariophyceae > Cyanophyceae. The highest productivity was found in culture pond which indicates the suitability of using for aquaculture.

Keywords: Jahangirnagar University, Phytoplankton, Pond ecology, Water quality

Location: Jahangirnagar University Campus, Saver, Dhaka

Start Date: 00-02-2014

End Date: 00-09-2014

Program Area: Quality and Nutrition

Commodity: Water quality, Fish

Objectives:

The present study was undertaken to investigate the comparison between fish culture and reconstructed pond to understand the effects of fish culture on the productivity of an aquatic ecosystem as well as the seasonal dynamics of different phytoplankton groups in relation to changes in the aquatic environment.

Methodology:

Study area The study area was undertaken in the water bodies of Jahangirnagar University Campus. Sample collection and analysis The sampling was carried out at one month interval for maintaining routine monitoring from three locations of each pond, during February-September, 2014. During sampling, 250 ml plastic sample bottles were rinsed with pond water to be sampled three times. Water samples were collected from the depth of about 15-30 cm from surface and tries to avoided bubble formation and addition of suspended particles as possible. All the samplings were properly labeled and carried out using disposable hand gloves with proper care and stored in ice box. pH, Dissolved Oxygen (DO), Total Dissolved Solids (TDS) of water were measured on spot by using calibrated digital multi-meter (HACH, 51910) and temperature using mercury centigrade thermometer. Electric conductance (EC) was measured at 25 ºC in μS/cm, using an electric conductivity meter (HANNA, HI 8033). Biochemical Oxygen Demand (BOD5) was done by 5-days incubation, 20ºC method (APHA, 2005). Quantification of plankton For biological analyses collection, preservation and qualitative assessment of phytoplankton were done by following Khondker et al. (1988) and Johansen (1940) using an electronic microscope. The average number of phytoplankton was expressed per liter of original water by using the following equation: Phytoplankton (No. / ml) = (C x100)/(A x D x F).

Where, C= Total no of phytoplankton counted; A= Area of field counted; D= Depth of the field on mm and F = No. of fields counted.

Source of Information: J. Environ. Sci. & Natural Resources, 9(1): 1-7, 2016 ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the investigation of water quality of the two ponds, it was observed that water of the culture pond was more suitable for phytoplankton growth. From productivity analysis, it was also found that highest productivity was found in culture pond and Chlorophyceae and Euglenophyceae were found to be dominant in study area. The higher concentration of plankton in culture pond indicates the suitability of water for fish culture. On the other hand, the newly reconstructed pond needs more treatment to prepare food when culture activity performs.

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