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Microplastics in coastal environments of the Arabian Gulf
Summary
Researchers surveyed beaches and sea surface stations along the coast of Qatar in the Arabian Gulf and found microplastics — predominantly blue polyethylene and polypropylene fibers — in all sediment and seawater samples. The study documents that microplastic pollution is a problem in the Arabian Gulf region, not just in the North Atlantic or Pacific.
Eight sandy beaches along the coastline of Qatar and four sea surface stations on the eastern coast, adjacent to Doha Bay, were surveyed between December 2014 and March 2015. Microplastics, mainly low density polyethylene and polypropylene, were found in all samples of sediments and seawater. Blue fibers, ranging between 1 and 5mm, were the dominant type of particle present. Abundances on the sea surface varied between 4.38×10 and 1.46×10particles·km, with the highest values being consistently found 10km offshore, suggesting the presence of a convergence zone. No significant temporal variability was detected for sea surface samples. The concentration of microplastics in intertidal sediments varied between 36 and 228particlesm, with no significant differences among the 8 beaches examined. These results show the pervasiveness of microplastic pollution in coastal environments of the Arabian Gulf. Potential local sources and sinks for microplastics are discussed.