Studying of Physico-chemical and Biological characters of Qarun Lake, El-Fayoum – Egypt | ||||
Egyptian Academic Journal of Biological Sciences, G. Microbiology | ||||
Article 2, Volume 9, Issue 2, August 2017, Page 11-20 PDF (1.35 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/eajbsg.2017.16331 | ||||
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Authors | ||||
El-Sayed W. M.1; Mosad Y. A.2 | ||||
1Department of Botany, Faculty of Science, Damnhour University, Egypt. | ||||
2National Institute of Oceanography and Fisheries (NIOF), Inland Water and Aquaculture Branch, 101 Kasr El Aini St., Cairo, Egypt | ||||
Abstract | ||||
Lake Qarun is an inland lake occupies the lowest part of El- Fayoum depression. The sampling program during the studied period was carried out on monthly basis from May 2015 and continued till April 2016 (12 successive months). Physico-chemical analysis of Qarun Lake revealed that pH values recorded were on the alkaline side, values of Secchi disc indicated that the water of the lake concerned as a turbid water bodies. The alkalinity in Qarun Lake is characterized by increasing of bicarbonate values as compared with carbonate one. Nutrients analysis indicated increasing of ammonium, nitrate, nitrite, phosphate, silicate in the water of the lake especially in front of the drains. On the other hand a total of 89 species of phytoplankton belonging to six classes were recorded in the lake. The recorded classes were Bacillariophyceae, Cyanophyceae, Chlorophyceae, Euglenophyceae, Dinophyceae and Cryptophyceae,.The Bacillariophyceae were most diverse with 39 species, then Cyanophyceae with 18 species, Chlorophyceae and Euglenophyceae with 10 species for both, Dinophyceae with 9 species and Cryptophyceae with 3 species. Our study concluded that the increased nutrient level in the lake by time show an exacerbated problem of eutrophication which lead to economic effect on fish production | ||||
Keywords | ||||
Qarun Lake; physico-chemical; Parameters; phytoplankton | ||||
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