Seasonal Variation of Water Physico Chemical Properties and Nutrients of Farwa Lagoon, Libya
DOI:
https://doi.org/10.63359/74r08x24Keywords:
Farwa lagoon, Seasonal Variation, Water , Physicochemical Properties, Nutrients, LibyaAbstract
Some physico-chemical properties, namely temperature, pH, salinity, dissolved oxygen, and major nutrients, namely NH3, NO2, NO3, and PO4, were studied for water samples from ten stations in the Farwa Lagoon on the western coast of Libya during July 2010 to January 2011.The study revealed that the water temperature of the lagoon varied between 16.0-33.0°C; pH 7.24-8.26; salinity 37.9-52.8 ppt; DO. 5.182-8.375 mg/l; ammonia 0.002-0.0415; nitrate 0.0033-0.0555 mg/l; nitrite 0.001-0.0132; and phosphate 0.0002-0.0087 mg/l. Salinity showed high levels during the dry season. Rainfall, distance from seawater, and high temperature play a major role in the variation of the lagoon's salinity. Low salinity of water was observed at stations 7 and 8 located near seawater during the rainy season. It was noted that the concentrations of nutrients measured in Farwa Lagoon water for all stations during the sampling seasons were within the normal range and did not indicate any nutrient pollution inside the lagoon. The results are important in understanding the pattern of variation of water quality parameters so as to assist relevant agencies to plan, protect, and aid in the management of the lagoon water for different uses.
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