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  1. Mohammed Abdus Salam, Siti Fazlin Binti Othman, Mohammad Mahbub Kabir, Aweng, E R, Md. Abdul Khaleque, Md. Shohel Khan
    MyJurnal
    An assessment of water quality and sediment nutrients has been carried out in Tumpat mangrove swamp forest located at Kelantan Delta in Malaysia. This mangrove delta is considered as very important to reduce the destruction of any natural disaster. Tumpat mangrove delta is possessed with several islands. Among them five islands situated at different locations started from inland edge to seaward were selected for present study. Different anthropogenic activities such as dumping of industrial and domestic effluent may contribute to degrade the water quality and sediments nutrient status. A total of 90 (water and sediment) samples 45 from each category were collected from 5 randomly selected islands. The aims of this study were to assess the water quality and sedimentary nutrients status and establish their relationship to find out the nutrient’s dynamic of Tumpat Mangrove Forest. The samples were tested in the laboratory to determine the water parameters and nutrient status. The results revealed that the mean concentration of DO, electric conductivity, pH was 4.67 ± 0.13 mg/L, 20.49 ± 4.71 μS/cm and 8.32 ± 0.06 and ranged from 4.47-4.87 mg/L, 14.21-28.67 μs/cm and 8.24-8.42 at Palau Bedal (PB), Palau Layang-layang (PL), Palau Kambing (PK), Palau Mas (PS) and Palau Tujuh (PT) islands, respectively. The mean concentration of BOD, COD and oil and grease (OG) were 1.09 ± 0.13 mg/L, 70.93 ± 25.21 mg/L and 91.77 ± 68.16 mg/L and the values were ranged from 0.9-1.25 mg/L, 44.33-120 mg/L and 18.67-205.71 mg/L at PB, PL, PK, PS and PT islands, respectively. Mean percentage of sediment nutrients such as N, P, K and Ca were 0.41 ± 0.04%, 4.66 ± 2.09 mg/L, 50.61 ± 10.58 mg/L and 83.15 ± 11.78 mg/L and ranged from 0.36-0.49%, 2.14-8.33 mg/L, 34.25-69.4 mg/L and 66.71-104.18 mg/L at PB, PL, PK, PS and PT islands, respectively. The highest N value was found in PT Island nearest to the coastal area. Deposition of litter from human settlement and fish chip factory might be the reason for higher N value. The trend of the P concentration for the study area was decreased from seaward to inland edge. Correlation analysis indicated the positive relationship between K: OG (r= 0.678) and Mg: OG (r= 0.721) but Ca: temperature (r=- 0.705) was negatively correlated. It is presumed that different concentrations of physico-chemical properties might be influenced for sedimentary nutrients dynamic at study area. Moreover, the sediment of the study area was not dynamic because most of the nutrient (P, K, and Mg) were influenced by the concentration of OG values.
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