Nearshore and offshore comparison of marine water quality variables measured during SESMA

Bong, Chui Wei and Lee, Choon Weng (2008) Nearshore and offshore comparison of marine water quality variables measured during SESMA. Malaysian Journal of Science, 27 (3). pp. 25-31. ISSN 1394-3065,

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Official URL: https://mjs.um.edu.my/article/view/7706

Abstract

Total suspended solids (TSS), dissolved oxygen (DO) and dissolved inorganic nutrient concentrations [ammonium (NH4), nitrite (NO2), nitrate (NO3), phosphorus (PO4) and silicate (SiO 4)] were measured in offshore sites covered by the first Scientific Expedition to the Straits of Malacca or SESMA1 cruise. Both TSS and DO showed striking differences between nearshore and offshore sites. TSS was elevated nearshore (> 250 mg 1-1) but was < 100 mg I-1 offshore. DO was at healthy levels (> 300 μM or 9.6 mg I-1) offshore but were low and sometimes exhibited hypoxia (< 125 μM or 4 mg I-1) nearshore. Dissolved inorganic nutrients were generally higher nearshore and this reflected eutrophication. High TSS, low DO and eutrophication showed that anthropogenic activities are affecting the marine water quality in Malaysia.

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: Dissolved oxygen; Eutrophication; Inorganic nutrients; Suspended solids; Tropical coastal waters
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Dec 2020 02:41
Last Modified: 11 Dec 2020 02:41
URI: http://eprints.um.edu.my/id/eprint/25637

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