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Seasonal environmental quality variations in a tropical seagrass ecosystem in the Straits of Malacca

Matias Peralta, Hazel Monica and Md. Yusoff, Fatimah (2014) Seasonal environmental quality variations in a tropical seagrass ecosystem in the Straits of Malacca. Malayan Nature Journal, 66 (1). pp. 59-74. ISSN 00251291

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Abstract

The study was conducted at the Merambong seagrass meadow in Johor, Malaysia (between 01º20.046 N 103 º 35.985 E and 01 º 19.781 N 103 º 05.675 E) to investigate the effect of tropical monsoon on the environmental quality variation in the seagrass ecosystem. Environmental data were collected during different monsoon seasons (Northeast, pre- Southwest, Southwest and post-Southwest monsoon) between 2005 to 2006 at four different stations. Three of the stations were located in the sea-grass bed (Stations 1 -3), whilst Station 4 was located about 1 m away from the sea-grass meadow. Northeast monsoon was characterized by the highest rainfall whereas, SW monsoon with the lowest rainfall during the period. Salinity, temperature, dissolved oxygen and conductivity values were found lowest during the NE monsoon, while highest during the SW monsoon. In contrast, turbidity was found highest during NE monsoon. On the other hand, significant (p<0.05) negative correlations were found between rainfall and several environmental parameters including temperature, salinity, dissolved oxygen, pH and conductivity. Whereas, a significant (p<0.05) positive correlation between rainfall and turbidity, total carbon and total organic carbon concentrations was detected. No significant differences in the TN and TP were found at different monsoon seasons. Similarly, no significant correlation between rainfall and TN and TP was found. The result of this study suggests that significant impact of different monsoon seasons brought about specifically by rainfall on the variability of environmental quality in the seagrass ecosystem. In addition, positive correlation between rainfall and carbon (TC/TOC) may suggest transport of organic matter (both particulate and dissolved organic matter, POM and DOM) from terrestrial sources.

Item Type: Article
Uncontrolled Keywords: parameters; rainfall; seagrass ecosystem; monsoon; Malacca Straits
Subjects: Q Science > QE Geology
Divisions: Faculty of Applied Science and Technology > Department of Technolgy and Heritage
Depositing User: Normajihan Abd. Rahman
Date Deposited: 10 Jan 2017 03:15
Last Modified: 10 Jan 2017 03:15
URI: http://eprints.uthm.edu.my/id/eprint/8235
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