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JOURNAL ARTICLE

Seasonal variation in composition and abundance of harmful dinoflagellates in Yemeni waters, southern Red Sea

Abdulsalam Alkawri
Marine Pollution Bulletin 2016 November 15, 112 (1-2): 225-234
27555482
General abundance and species composition of a dinoflagellate community in Yemeni coastal waters of Al Salif (southern Red Sea) were studied with a view to understand the annual variations in particular the toxic species. Dinoflagellates were more abundant among phytoplankton. Thirty five dinoflagellate taxa were identified, among which 12 were reported as potentially toxic species. A significant change in seasonal abundance was recorded with the maximum (2.27∗10(6)cellsl(-1)) in May, and the minimum (2.50∗10(2)cellsl(-1)) recorded in January. Kryptoperidinium foliaceum, which was reported for the first time from the Red Sea, was the most abundant species with a maximum in May 2013 (2.26∗10(6)cellsl(-1)). Spearman's rank correlation analysis indicates that, total harmful dinoflagellate cells, K. foliaceum, Prorocentrum gracile and Prorocentrum micans were significantly correlated with temperature. This study suggests that Yemeni waters should be monitored to investigate harmful species and to identify areas and seasons at higher risk.

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