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Research Journal of Environmental Sciences
  Year: 2012 | Volume: 6 | Issue: 2 | Page No.: 77-87
DOI: 10.3923/rjes.2012.77.87
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The Impact of Sewage Pollution on Polychaetes of Al Khumrah, South of Jeddah, Saudi Arabia

S. Al- Farraj, A. El- Gendy, S. Al Kahtani and M. El- Hedeny

Al-Khumrah is the most important sewage treatment station (STS) in the south of Jeddah, Saudi Arabia. There are two basins for sewage discharge in this area, the old discharge outfall (southern corniche) and the new discharge outfall (3 km south of the old station).The present contribution studies the polychaete community structures and its response to sewage discharge in the two basins. Four stations and a control site were sampled around Al Khumrah area. At each station water quality variables were also measured and a total of 40 species were encountered. The control station, situated 6 km from the effluent, had the highest species richness, species diversity and evenness with the dominant polychaete species being Owenia fusiformis and Lumbrineris garcilis. The most impacted stations, situated at the effluent, had the lowest species richness and diversity. Capitella capitata, Heteromastus filiformis and Notomastus aberans were most abundant at the stations nearest to the effluent. Caulleriella alata, Cirratulus cirratus and Syllis gracilis reached their highest abundance at stations near the old sewage discharge outfall and were characteristic of the control site. There is a strong similarity of polychaete assemblages in and near the old discharge outfall basin and that of the control site. This can be explained as a result of cessation of organic enriched sewage input to the former site creating favorable environmental conditions for polychaete life. The capacity of the sewage treatment plant in the new sewage discharge outfall is largely insufficient and does not meet the environmental requirements.
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How to cite this article:

S. Al- Farraj, A. El- Gendy, S. Al Kahtani and M. El- Hedeny, 2012. The Impact of Sewage Pollution on Polychaetes of Al Khumrah, South of Jeddah, Saudi Arabia. Research Journal of Environmental Sciences, 6: 77-87.

DOI: 10.3923/rjes.2012.77.87






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