Abstract

This study was conducted in a burnt lake in Wadi Al Shati - Libya, for a period of 6 months, in spring water, sewage, agricultural drainage, and mixed water to study the demographics of the lake. and birds (Gallinala waterfowl, Egretta sacra), mosquitoes, insects, parasites, worms and amphibian larvae.The physical and chemical properties of the lake water were also measured and the results showed significant differences between months for permanent oxygen, temperature and pH of agricultural and sanitary drainage water and significant differences for mixed water for pH Oxygen and temperature of sewage water, as oxygen indicated a rise in all types of water and the presence of significant differences between the months of January and February between the four sites, and the study proved the existence of an inverse relationship between oxygen, conductivity and temperature, and the conductivity and total permanent salts showed the presence of significant differences between the months of spring water, The results also showed that there are significant differences in the amount of bicarbonate, potassium and sodium for agricultural drainage water, and there are significant differences for mixed water and wastewater between all months for bicarbonate and calcium, respectively Healthy for calcium, and mixed water for bicarbonate.