The Bay of Bandar Al-Khyran

The Bay of Bandar Al-Khyran

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The Bay of Bandar Al-Khyran , which is the largest semi-enclosed bay on the southern coast of the Sea of Oman with an approximate surface area of 4 km2 and an average depth of 10 m. The bay has two inlets and is surrounded by steep rocky hills and cliffs of Permian limestones and shales lined with shallow coral communities.

Monthly estimates of chlorophyll a, temperature, salinity, and nutrients were collected through sampling at two stations from January 2001 to January 2002, in and near Bandar Al-Khyran, the largest semi-enclosed bay on the southern coast of the Sea of Oman.

Although the sampling location was at the limit of the tropical range, the seasonal changes of the coastal phytoplankton were more related to temperate dynamics, showing seasonal fluctuation of more than 10o C. Sharp temperature drops observed in August and July were likely due to rises of the thermocline under the influence of oastal upwelling events or to deep water injections along the north coast of Oman generated by changes in the coastal wind patterns.

 

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Seasonal Changes of Chlorophyll a and Environmental Characteristics in the Sea of Oman
Al-Hashmi, Khalid A. Claereboudt*, Michel R. Al-Azri, Adnan, R. Piontovski, Sergey. A.
Sultan Qaboos University, Department Marine Science and Fisheries College Agricultural and Marine Sciences, Box 34
Al-Khod 123 Sultanate of Oman

Abstract
Monthly estimates of chlorophyll a, temperature, salinity, and nutrients were collected through sampling at two stations from January 2001 to January 2002, in and near Bandar Al-Khyran, the largest semi-enclosed bay on the southern coast of the Sea of Oman. Although the sampling location was at the limit of the tropical range, the seasonal changes of the coastal phytoplankton were more related to temperate dynamics, showing seasonal fluctuation of more than 10o C.
Sharp temperature drops observed in August and July were likely due to rises of the thermocline under the influence of coastal upwelling events or to deep water injections along the north coast of Oman generated by changes in the coastal wind patterns. Overall, small phytoplanktonic cells [0.7-5 μm] dominated the phytoplankton community of the mixed layer with an average of 69.7 % and 73.5 % of the extracted chlorophyll a at the station "Inside" and "Outside" the bay, respectively.

Keywords: Arabian Sea, picoplankton, chlorophyll a, coastal upwelling, phytoplankton blooms.

Date 2017-01-30
File Size 811.73 KB
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