Pak. J. Bot., 43(4): 2187-2193, 2011.

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			Updated: 20-08-11
	*MARINE CENTRIC DIATOM RHIZOSOLENIA* BRIGHTWELL: ITS OCCURRENCE AND DISTRIBUTION IN NERITIC WATERS OF PAKISTAN** ASMA TABASSUM^1* AND S.M. SAIFULLAH² Abstract: Seventeen taxa including 14 species and varieties of marine centric diatom of the genus Rhizosolenia Brightwell from the Northwest Arabian Sea shelf of Pakistan are described. Almost all species were recorded on both Balochistan and Indus Delta shelves. R. imbricata was the most common species and next were R. bergonii and R. striata. Maximum numbers of species were recorded in winter season characterized by upwelling due to surface cooling. ¹Department of Botany, University of Karachi, Karachi, Pakistan²Institute of Marine Science, University of Karachi, Karachi, Pakistan

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