Rabeh, S. (2001). ECOLOGICAL STUDIES ON NITROGEN CYCLE BACTERIA IN LAKE MANZALA, EGYPT. Egyptian Journal of Aquatic Biology and Fisheries, 5(3), 263-282. doi: 10.21608/ejabf.2001.1703
Saleh Rabeh. "ECOLOGICAL STUDIES ON NITROGEN CYCLE BACTERIA IN LAKE MANZALA, EGYPT". Egyptian Journal of Aquatic Biology and Fisheries, 5, 3, 2001, 263-282. doi: 10.21608/ejabf.2001.1703
Rabeh, S. (2001). 'ECOLOGICAL STUDIES ON NITROGEN CYCLE BACTERIA IN LAKE MANZALA, EGYPT', Egyptian Journal of Aquatic Biology and Fisheries, 5(3), pp. 263-282. doi: 10.21608/ejabf.2001.1703
Rabeh, S. ECOLOGICAL STUDIES ON NITROGEN CYCLE BACTERIA IN LAKE MANZALA, EGYPT. Egyptian Journal of Aquatic Biology and Fisheries, 2001; 5(3): 263-282. doi: 10.21608/ejabf.2001.1703
ECOLOGICAL STUDIES ON NITROGEN CYCLE BACTERIA IN LAKE MANZALA, EGYPT
National Institute of Oceanography and Fisheries, Inland Waters Branch, Lab. of Microbiology, El-Qanater Research Station.
Abstract
Six stations were chosen to represent the different micro-habitats along the southern part of Lake Manzala. In addition, two main drains, Bahr El-Baqar and Hadous were represented. Water and Bottom sediments were collected through four successive seasons (Autumn 1999 - Summer 2000) for physico-chemical and bacteriological analyses. The results showed that water temperature recorded the lowest value during Winter, while it recorded the highest during Summer with an annual amplitude 14.8°C. The Lake is shallow with a depth ranging from 0.85 - L31 m. The pH values were in the alkaline side. The water transparency fluctuated from 19.5 - 325 cm . The organic matter and organic carbon ranged from 5.28 - 8.71% and 3.06 - 5.06%, respectively. Bacteriological analysis showed that the highest counts of the studied bacteria were recorded in Bahr El-Baqar and Hadous Drains compared with Lake Manzala' stations.Conversly , the lowest counts of nitrifying bacteria were recorded in Bahr El-Baqar Drain and its discharge points.
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