Effects of red tide on physico-chemical properties of water and phytoplankton assemblage in Sepanggar Bay, Sabah, Malaysia

Md. Rashed-Un-Nabi, and Low, Sin Ee. and Md. Azharul Hoque, and Madihah Jaafar Sidik, and Ejria Saleh, and Ann Anton, Datin (2010) Effects of red tide on physico-chemical properties of water and phytoplankton assemblage in Sepanggar Bay, Sabah, Malaysia. International Journal of Ecology and Environmental Sciences, 36 (4). pp. 245-251. ISSN 0377-015X

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Abstract

Harmful algal bloom (HAB) produced by Cochlodinium sp. is a serious concern in the west coast of Sabah in Malaysia. Recently frequent occurrence of red tide has been reported in Sepanggar Bay, south of Kota Kinabalu. This paper presents a comparative study of physico-chemical properties of water and phytoplankton assemblage during red tide and non-red tide period in Sepanggar Bay. Measured parameters were significantly different (p<0.05) between the red tide and non-red tide periods. The mean abundances of phytoplankton was 0.388x106 cells L and 1.628x106 cells during red tide and non-red tide period respectively. The global R value, obtained through analysis of similarity test, in non-red tide period (0.03) were higher than in the red tide period (0.01 ) which indicates more diverse phytoplankton assemblage during non-red tide period. Cochlodinium sp. was the most discriminating species (31.39%) during red tide period and Coscinodiscuss sp. (18.25%) during the non-red tide period. Through cluster analysis three species groups were found during red tide period while six groups were found during non-red tide period, which implies less diverse phytoplankton assemblage in the presence of red tide.

Item Type:Article
Uncontrolled Keywords:Cluster analysis, Harmful algal bloom, Multidimensional scaling, Similarity percentage
Subjects:S Agriculture > SH Aquaculture. Fisheries. Angling
?? QH540-549.5 ??
Divisions:SCHOOL > Borneo Marine Research Institute
ID Code:3977
Deposited By:IR Admin
Deposited On:17 Apr 2012 12:44
Last Modified:17 Feb 2015 16:15

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