merged

Submarine Groundwater Discharge and Nutrients Input at Tourist
Hotspots Island, Pulau Redang, Malaysia
Siow Li Yin
Supervisor: Dr. Tan Chun Hong & Dr. Poh Seng Chee
Bachelor of Science (Marine Science)
School of Marine and Environmental Sciences
Located on the east coast of Peninsular Malaysia, Pulau Redang is one of the 13 islands
gazetted as Marine Park in Terengganu. Environmental evaluations are conducted
regularly within the marine parks but the evaluation of submarine groundwater
discharge (SGD) as an alternative nutrients enrichment pathway in coastal water have
never been examined. In this study, a time series sampling was conducted at two
potential SGD sites (Pasir Panjang Beach and Tigi Bay) of Pulau Redang. Water
samples were collected hourly (12 – 14 hours) to capture a complete tidal cycle. The
natural occurring of radon-222 isotope (SGD tracer) and associated ammonia, nitrate
and phosphate were measured. Samples from Tigi Bay shows stronger relationship
between radon and nitrogen (r 2 =0.55), and phosphorus (r 2 =0.39) when compare to
Pasir Panjang Beach. This suggested that the SGD maybe one of the nutrient sources
contributed to the coastal water of Pulau Redang especially for Tigi Bay area.
1917 | UMT UNDERGRADUATE RESEARCH DAY 2018