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Water Quality and Phytoplankton Communities in Lake Al-Asfar, Al-Hassa, Saudi Arabia |
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A.A. Fathi,
M.A. Al-Fredan and A.M. Youssef |
Abstract:
Some characteristics of Lake Al-Asfar, Al-Hassa, Saudi Arabia were monitored over a period of one year. Seasonal differences in the quantitative and qualitative composition of the phytoplankton communities in Lake Al-Asfar were marked. The maximum crop density was recorded in spring, whereas lowest values occurred in winter. The total crop densities were mainly a reflection of the trends in counts of Chlorophyceae. Four algal groups were recorded during the investigation: Bacillariophyceae, Chlorophyceae, Cyanophyceae and Euglenophyceae. Thirty nine species were identified allover the period of the investigation. Out of these, 14 species belong to Chlorophyceae, 15 belong to Bacillariophyceae, 7 to Cyanophyceae and 3 to Euglenophyceae. Chlorella sp., Chlorococcus humicola, Monoraphidium contortum, Oedogonium sp., Cyclotella meneghiniana, Gyrosigma sp., Fragilaria capucina, Navicula lanceolata, Surirella obonga, Synedra acus, Tabellaria sp. and Oscillatoria sp. were observed in a high rank of occurrence. Seven algal species were moderately common and 3 species were frequently recovered, most of them belong to Bacillariophyceae. The remaining recorded species were rarely recovered. Generally, the species data suggests that the water of Lake Al-Asfar can be considered as eutrophic.
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How to cite this article:
A.A. Fathi, M.A. Al-Fredan and A.M. Youssef, 2009. Water Quality and Phytoplankton Communities in Lake Al-Asfar, Al-Hassa, Saudi Arabia. Research Journal of Environmental Sciences, 3: 504-513.
DOI: 10.3923/rjes.2009.504.513
URL: https://scialert.net/abstract/?doi=rjes.2009.504.513
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