The impact of agricultural drains on water quality and Phyto- zooplankton communities in fish farms, Egypt. | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 5, Volume 17, Issue 3, July 2013, Pages 47-56 PDF (225.21 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2013.2176 | ||
| Authors | ||
| Abd El-Halim Saad1; Ahmed Abd El-Gawad2; Niema Ali2; Nadia Bassuny3 | ||
| 1Zoology Department, Faculty of Science, Ain Shams University, Egypt. | ||
| 2Central Lab for Aquaculture Research, Agricultural Research Center | ||
| 3Labor University , Kafr El-Sheikh, Egypt. | ||
| Abstract | ||
| This study was carried out on two fish farms in Kafr El-Sheikh and Sharkia governorates during 2011. The water supply sources of these farms were El-Gharbia and El-Wady drains respectively. The mean values of physico-chemical parameters of water in El-khashaa and Abbassa fish farms were: water temperature (24.66 and 24.95 oC); pH (9.23 and 8.67); transparency (12.12 and 15.24 cm); DO (5.36 and 6.3 mg/l ); total alkalinity (330.9 and 340.3 mg/l) and total hardness (689.5 and 260.0 mg/l), respectively. The major nutrient concentrations (N & P) at the main feeder were much higher than the corresponding values at fish farms. Nitrogen concentrations analysis indicated the highest values of NH3-N over NO3-N in the selected fish ponds (1.94 and 1.22 mg/l respectively). Phytoplankton in the present study were represented by four groups; Chlorophyceae, Cyanophyceae,Bacillariophyceae and Euglenophyceae, where Chlorophyceae dominated other groups. Zooplankton were represented by four groups; Rotifera, Copepoda, Ostracoda and Cladocera. Rotifera and Cladocera were the dominant groups. Results indicated that the drainage water affects physical, chemical and biological characteristics of fish farms | ||
| Keywords | ||
| El-Gharbia drain; El-Wady drain; phytoplankton; Zooplankton; fish farms physical and chemical parameters | ||
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