Comparison of the Catching Results of Mini One-Boat and Two-Boat Purse Seine in Bali Strait, Muncar, East Java Province

Mini purse seine has a major contribution in increasing production of small pelagic catches in Pelabuhan Perikanan Pantai (PPP) Muncar, because it has high productivity and the construction made according to catch schooling fish. This research aims to compare the catches composition and catch rate of mini one-boat and two-boat purse seine in Bali Strait, Indonesia. This research was conducted in Mei 2018 in Muncar, East Java, Indonesia. The method used in this research is survey. The primary data are total catch composition, fork length, individual weight of total catch and operation time of both fishing gears. Data were analysed by main catch and bycatch proportion, legal size proportion and catch rate. The results showed that the mini two-boat purse seine had a greater catch volume compared to the mini one-boat purse seine. The bycatch composition dominates in both fishing gear. The proportion of legal-size catching is 67% of the total. The fork length is not significantly different and for the total catches is significantly different. The catching rate of the mini purse seine one boat catch rate is lower at 4,048.67 kg/hour, compared to the mini two-boat purse seine which is 9,189.18 kg/hour

Environmental awareness study on the geographical perspective of Kedah and Kelantan communities in Malaysia

Environmental pollution is a problem that occurs all over the country and it has different effects on human health. The issue of pollution is a new challenge for urban and rural residents. This study aims to analyze environmental awareness among the geographical perspective of Kedah and Kelantan communities in Malaysia. The method used in this study is quantitative method. This study was conducted on 500 responders from urban and rural area in Kedah and Kelantan, Malaysia. Data were collected using questionnaires and analyzed to measure the level of environmental awareness among communities in Kedah and Kelantan. The data obtained were analyzed using XLStat2020. The data shows that the level of awareness in Kedah and Kelantan is still at an encouraging level. This study showed that urban and rural population in Kedah and Kelantan experienced in environmental awareness with a significant value of 0.05. Therefore, environmental education is the best effort to maintain public awareness of environmental care

Potential of field turbidity measurements for computation of total suspended solid in Tasik Kenyir, Terengganu, Malaysia

The urbanization has significant effects on watershed hydrology and the quality of water in this catchment. One component of water quality is total suspended solids (TSS) which a significant part of physical and degradation and a good indicator of other pollutants on the surface of sediment in suspension. The purpose of this study is to investigate whether turbidity could produce a satisfactory estimate of TSS in urbanizing at the Tasik Kenyir. TSS and Turbidity were analyzed based on in-situ and ex-situ analyses were carried out according to the correlation matrix and linear regression methods at 14 (10-140 m) different depths for two sampling locations in the Tasik Kenyir (which are Chomor River and Mahadir Island- the name of sampling location in Tasik Kenyir), using data compiled. A log-linear model showed a strong positive correlation between TSS and Turbidity with is (R-2 = 0.991 for Chomor River and R-2 = 0.995 for Mahadir Island) with a regression equation of ln (TSS) = 1.32 ln (NTU) + C, with C not significantly different. From the result, water quality parameter (TSS and Turbidity) showed outlet significantly which decreased over depth caused the water quality deterioration of Tasik Kenyir development. These results strongly suggest that turbidity is a suitable monitoring parameter where water-quality conditions must be evaluate

Assessment of hydrological inspection using development low-cost boat application in University Sultan Zainal Abidin (UniSza) Lake, Terengganu, Malaysia

Unmanned vehicles may provide less time consume and cost-effective methods of gathering hydrographic survey data compared to traditional, manned survey vessels. A remote-controlled Unmanned Surface Vehicle (USV) was outfitted with range finder, depth transducer, and velocity current meter for the purpose of conducting a hydro survey. The purpose of study to describes a project for the development of Unmanned Survey Vessel (USV) platform useful for hydrological survey. The control unit includes a motor control system, communication equipment, and a simple radio control system installed to enables an operator to remotely control the boat. The motor radio control system, the measurement equipment (sonar depth, current meter, range finder) used in data collecting activities. The result showed the validation values of Hydro Survey Boat Version 1 and Hydro Survey Boat Version 2, the estimated validation of river discharge (Q) recorded 0.0373 m3/s. The significant differences of Q between Hydro Survey Boat Version 1 as 0.0853 m3/s (56.3%) and Hydro Survey Boat Version 2 as 0.042 m3/s (11.2%) which is the Hydro Survey Boat Version 2 recorded more accurate readings compared Hydro Survey Boat Version 1. There are several advantages of this project which is reducing cost, improve efficiency, and reduce risk during hydrology survey. The development survey boat USV is innovation technology and it will improved the hydrological method

Assessing of water quality and sedimentation problems in Lata Sungai Limau, Malaysia

Sedimentation problem and water quality deterioration are the occurrences happened along the river basin especially at main river basin in Malaysia. The main objective of this study to review the sedimentation problems and water quality deterioration level in the Lata Sungai Limau, Terengganu, Malaysia. 11 sampling stations were chosen from upstream until downstream. There are four mains contributed in this study such as water quality parameters, distribution of sediment grain size, concentration of total suspended solids (TSS) and river discharge (Q) respectively. From leave-one-out method showed chemical oxygen demand and TSS are the most importance water quality variables with river discharge (Q). The formation of sediment load per day falls between 53.540 kg/d (Station 2) and 1,164.394 kg/d (Station 5) for all sampling stations contributed. The result showed the sizes of sediment recorded phi –0.011 and phi 0.768 with very rough particle sizes which are between phi 1.00 and phi 0.00. All parties involved need to take responsibility and be more aware to environmental deterioration and awareness. This research conducted to enlighten the public about the importance of the environment, especially river basins