Effects of land use on river water quality of Awat-Awat Lawas Mangrove Forest Limbang Sarawak Malaysia (original) (raw)
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American Journal of Enviromental Sciences, 2011
Problem statement: Mangrove forest is a component of wetlands that has been recognized as one of the most productive ecosystem in the tropic. Rapid development and other land uses in the mangrove areas over the years had negatively affected the ecological functions and its ecosystem. Study was carried out on river water quality at Sibuti Wildlife Sanctuary, Miri based on the physicochemical properties. Approach: A total of 72 water samples were collected from 12 stations or sampling points from Sungai Sibuti (SS) and its tributary, a man-made canal called Sungai Parit Scheme (SPS) at Sibuti Wildlife Sanctuary Miri, Sarawak in the month of June, August and October 2010. In situ data measurement such as temperature, conductivity, Dissolved Oxygen (DO), pH and turbidity were taken and labeled. Analysis for parameter such as ammoniacal nitrogen (NH 3 -N), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and total suspended solids (TSS) were conducted in the laboratory. Both in situ and ex situ data were measured and analyzed according to the Standards Methods APHA, 2005. Results for each water quality parameters are summarized as follows, temperature range (29.3-32.8°C), pH range (6.02-8.07), DO range (2.76-4.7 mg L −1 ), conductivity (0.805-96.1 µS cm −1 ), TSS range (0.00119-0.4361 mg L −1 ), turbidity (10.2-15.3 NTU), BOD range (5.21-6.66 mg L −1 ), COD (7.5-25) and ammoniacal nitrogen (0.1-0.31 mg L −1 ). Results: Based on Water Quality Index (WQI) and Interim National Water Quality Standards for Malaysia (INWQS) by the Department of Environment Malaysia, river water of SPS and SS fall under Class II. Conclusion: The water quality status of river water at Sibuti Wildlife Sanctuary Mangrove Forest, Miri Sarawak is under category class II or good water quality status. All water quality parameters in this study are found to be in class I and II (good water quality) except for the BOD and DO which indicate fairer and moderate river water quality status.
Water Quality Assessment of Jarum Mas River at Matang Mangrove Forest, Perak
International Journal of Sciences
Mangrove Forest is well known with the mangrove tree that can withstand waves from the sea and even Tsunami. That has happened in Sri Lanka in 2004 where many villages at the mangrove area safe and the number of death reduced. However, this mangrove forest nowadays threatened by the human activities. Therefore, the study was carried out to determine the water quality index (WQI) of Jarum Mas river which near to the agriculture area and to compare the water quality during low and high tide. There were 30 samples of water taken during Jun and July at 5 stations along Jarum Mas river. The data collections were collected based on the six WQI parameters; Ammoniacal nitrogen (NH 3-N), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Dissolved Oxygen (DO), pH, Total Suspended Solids (TSS) with other five parameters; Electrical Conductivity (EC), Turbidity, Total Dissolved Solids (TDS), Salinity and Temperature. The results for each parameter are summarized as follow; NH 3-N range (4.3-4.85 mg/l), BOD range (1.5-4.2 mg/l), COD range (1095-1405 mg/l), DO range (2.27-4.91 mg/l), pH range (6.86-6.98), TSS range (48.33-70.5mg/l), EC range (33.04-38.7 mS/cm), turbidity range (19.38-26 NTU), TDS range (20.07-22.69 mg/l), salinity range (19.5-22.03 PSU), temperature range (28.25-29.35 o C). The WQI of Jarum Mas River is Class III which need extensive treatment for water supply and only common economic value for fishery based on Water Quality Index (WQI) and Interim National Water Quality Standards for Malaysia (INWQS) by Department of Environmental Malaysia.
Water Quality Status and Hydrological Analysis at Upper Dong River, Malaysia
Water quality can be affected by various aspects of either natural or physical changes in the area. This article discusses the effects of water quantity and quality in the upper area of Upper Dong natural forest reserved at Dong River, Raub Pahang, Malaysia. Data observations were made from 16 to 21 November 2009. Five sampling stations were selected along 2.4 km encompassed the upstream and downstream of the river. Overall, the water quality status as stated in INQWS is categorized as Class I. Statistical analyses show that water quality parameters were changed significantly along the river reach. Towards downstream, the water quality became more deteriorated followed by reduction on flow velocity. Statistical values for temperature and distance between station from upstream to downstream is R2= 0.989, R2 = 0.882 for TDS, R2= 0.946 for Conductivity and R2= 0.803 for Do (mg/l). Natural factors such as flow velocity, water quantity and land use changes from natural forest to village ...
IOP Conference Series: Earth and Environmental Science
River water quality is one of the major issues in water supply in Malaysia. Most people understand that, water pollution caused by the discharge from the factories and municipal waste but is that the real case? So, in order to answer the above question, this study was done to determine the interaction or correlation between physico-chemical water quality and river ecosystems. Component of river ecosystems measured are river riparian composition, large woody debris (LWD), canopy cover and substrate composition (D50). This study was conducted in Sungai Mengkibol, Sungai Madek and Sungai Dengar in Johor. There were a total of five sampling sites, three for impact stations and two as reference stations, including one highland station. For water quality, six in-situ parameters were measured namely temperature, conductivity, dissolved oxygen (DO), pH, turbidity and salinity using a multi parameter probe as well as a single parameter probe. Meanwhile, field survey form was used to assess r...
The water chemistry of selected rivers in Kota Marudu, Sabah was studied based on the major ion chemistry and its suitability for drinking and irrigation purposes. Ten sampling stations were selected and water samples were collected from each station to assess its chemical properties. The physico-chemical variables including temperature, electrical conductivity (EC), total dissolved solids (TDS), salinity, dissolved oxygen (DO), pH, turbidity, ammoniacal-nitrogen (NH 3-N), biological oxygen demand (BOD), chemical oxygen demand (COD) and total suspended solid (TSS) were measured. The cations (K, Mg, Ca, Na) were analyzed by ICP-MS. Most of the variables were within the drinking water quality standards stipulated by the World Health Organization (WHO) and the Ministry of Health (MOH), Malaysia except for turbidity. Sodium adsorption ratio (SAR) and salinity hazard were calculated to identify the suitability of the water as irrigation water. The Wilcox diagram classifies that only 10% of samples are not suitable for the purpose of irrigation. The overall results showed that most of the rivers in Kota Marudu are still in a clean condition and suitable for drinking and irrigation purposes except for Sumbilingan River, which is considered as slightly polluted. The results are supported by the hierarchical cluster analysis as the stations were grouped into two groups; low and high pollution intensities. This preliminary result can update the baseline data of selected water quality parameters in the Kota Marudu and could serve as tool for assisting relevant government bodies in regulating the water resources policies in the future.
Australian journal of basic and applied sciences, 2011
This study was conducted to determine physical and chemical water quality for three rivers which flowed through different land uses. Water quality was surveyed from November 2008 to June 2010 at five identified stations which were located at three rivers in Sungai Endau watershed (Dengar, Madek and Mengkibol river) Kluang, Johor. There were two types of data obtained from the river water quality sampling exercise, i.e. in-situ and laboratory analyses data. A total of five water quality parameters were measured namely pH, dissolved oxygen, conductivity, temperature and turbidity by using a multi parameters probe Model YSI 6920 with 650 MDS Display/Logger as well as single parameter probe. While, for laboratory analysis, there were seven parameters measured; namely Biochemical oxygen Demand (BOD), Suspended Solid (SS), Phosphate, Nitrate and Sulphate, Chemical Oxygen Demand (COD) and Ammoniacal Nitrogen (AN). Based on the results, it was found that Mengkibol river (urban river) record...
Assessment of water quality status using univariate analysis at Klang and Juru River, Malaysia
Journal of Fundamental and Applied Sciences, 2018
Klang River and Juru River which today suffers from water quality problems resulting from anthropogenic and geomorphology quality status from 2009 until 2013. 10 monitoring stations covering along Klang River and Juru River were selected. Six water quality parameters analyzed based on in analysis were carried out according to the univariate analysis to obtain WQI level. The result indicated the impact of various anthropogenic and geomorphology activities contributed higher values of BOD, COD, SS Juru River still on stable condition. upstream area triggered by pollutants from waste products of development activities inclusion of a high amount of pollutants of Klang River and Juru River.
Assessment of water quality status for the Selangor River in Malaysia
Water, Air, & Soil Pollution, 2010
Water quality degradation in the Selangor River will still be present in the years to come since pollutant loads from poultry farms, municipal wastewaters, and industrial wastewaters are not envisaged to be handled effectively. This will be facing the problems of water quality status to use for multiple purposes and to provide its aquatic environment continuously. The water quality evaluation system is used to assess the water quality condition in the river. This system distinguishes two categories of water condition i.e., the water quality index and water quality aptitude. The assessment of water quality for the Selangor River from nine stations along the main stream, which concludes that water has been highly polluted (index 5) immediately downstream of station 02 Selangor River before confluence with Kubu River due to high concentration of microorganisms and immediately downstream of station 06 Selangor River before confluence with Batang Kali River due to high concentrations of microorganisms and suspended particles, was verified. Mineral micropollutants were found to gradually pollute the stream water, ranging from the unpolluted water (index 1) in the upstream to the bad quality (index 4) in the downstream area.
A Study on Water Quality from Langat River, Selangor
Acta Scientifica Malaysia
Langat River is one of the main sources of water supply for Selangor state. This study was conducted to determine the water quality status of Langat River in Selangor based on WQI and INWQS. Water sampling was conducted at ten stations for two seasons; dry season during February 2016 and wet season during November 2016. Parameters included in this study are temperature, pH, DO (Dissolved Oxygen), Conductivity, TSS (Total Suspended Soil), TDS (Total Dissolved Oxygen), BOD (Biochemical Oxygen demand) and Heavy metals. The laboratory analysis was carried out according to the HACH and APHA methods. This study found that the water quality of Langat River is classified in class III for both sampling times. Reduction in WQI value in the river was observed mainly due to human activities such as industrial and services building producing wastes. Based on results and statistical analysis, the values of pH, COD, Conductivity, TSS and TDS in the study area were influenced by the nearby industrial constructions. In dry seasons, low volume and stagnant water could create entropic conditions in the river. Water quality which classified in class III were considered as slightly polluted. Langat River can be used as supply if only conventional treatment was done. Water quality which classified in class III were considered as slightly polluted. Langat River can be used as water supply if only conventional treatment is carried out.