Pub Date : 2020-12-03DOI: 10.24843/jmas.2020.v06.i02.p3
I. G. A. D. Damara, I. Dharma, Yulianto Suteja
This study aims to examine the effect of sea surface temperature on the skipjack tuna catch (Katsuwonus pelamis) in the waters of the Bali Strait. The waters of the Bali strait are selected by the authors because the waters of the Bali strait have the potential of catching tuna fish is high. The research is measured by using regression polynomial method of order 2. With the results of this study found from the sea surface temperature data in the results of the average - the average year 2011 - 2015 where the highest value is in March at 30.240C and the lowest in September of 25.870C. For skipjack catch data in 2011 - 2015 where the lowest weight in June was 4. 590 kg, while the highest weight in July was 61,367 kg, and beside that the result of regression 2nd polynomial regression was obtained with R = - 0.60 which has a strong meaning is inversely proportional or in other words sea surface temperature does not affect the catching of skipjack tuna in the waters of bali strait because in addition to sea surface temperature factors other indicators such as chlorophyll, depth, and oceanographic factors also affect the catch skipjack tuna in the waters of the bali strait.
{"title":"Pengaruh Suhu Permukaan Laut terhadap Hasil Tangkapan Ikan Cakalang (Katsuwonus pelamis) di Perairan Selat Bali","authors":"I. G. A. D. Damara, I. Dharma, Yulianto Suteja","doi":"10.24843/jmas.2020.v06.i02.p3","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p3","url":null,"abstract":"This study aims to examine the effect of sea surface temperature on the skipjack tuna catch (Katsuwonus pelamis) in the waters of the Bali Strait. The waters of the Bali strait are selected by the authors because the waters of the Bali strait have the potential of catching tuna fish is high. The research is measured by using regression polynomial method of order 2. With the results of this study found from the sea surface temperature data in the results of the average - the average year 2011 - 2015 where the highest value is in March at 30.240C and the lowest in September of 25.870C. For skipjack catch data in 2011 - 2015 where the lowest weight in June was 4. 590 kg, while the highest weight in July was 61,367 kg, and beside that the result of regression 2nd polynomial regression was obtained with R = - 0.60 which has a strong meaning is inversely proportional or in other words sea surface temperature does not affect the catching of skipjack tuna in the waters of bali strait because in addition to sea surface temperature factors other indicators such as chlorophyll, depth, and oceanographic factors also affect the catch skipjack tuna in the waters of the bali strait.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45065599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.24843/jmas.2020.v06.i02.p2
I. K. Budiarta, E. Faiqoh, I. Dirgayusa
Seagrass ecosystem is part of the marine ecosystem that has quite important ecological role. Halophila ovalis and Thalassia hemprichii are seagrass species have the potential to become an agent of phytoremediation by determining the concentration of heavy metals Pb and Cd that have accumulated in them. This study was conducted in January 2018 in Southern Serangan Beach. The purpose of investigating the concentration of heavy metals in water, sediments, roots and leaves of seagrass and determine the bioaccumulation, translocation character and can be made as an agent for phytoremediation. The method used is purposive random sampling method, determined by 3 point. The point is determined from the condition closest to the port Benoa to the outermost point the bay mouth. Determination of station points is considering the presence of the most seagrasses. Results obtained in this study obtained average Pb concentration in water 0.0521 ppm, average metal Cd 0.1652 ppm, the average sediment Pb 75.8574 ppm, Cd 15.33593 ppm, concentration of Pb and Cd in roots and leaves of H. ovalis and T. hemprichii respectively Pb 42.4940 ppm, 45.5334 ppm, and 35.6207 ppm, 38.3931 ppm. Metal Cd 12.9708 ppm 14.8581 ppm Bioaccumulation value of seagrass is accumulator plants. Value of Pb and Cd translocation factors in seagrass H. ovalis (phyto-extraction) seagrass T. hemprichii Pb (phyto-extraction) and Cd (fitostabilization) phytoremediation values by both types of seagrass are greater in remediating heavy metal cadmium, meaning that both types of seagrass are better used for phytoremediation agents of heavy metal cadmium.
{"title":"Accumulation Of Heavy Metal Lead (Pb) And Cadmium (Cd) In Halophila ovalis And Thalassia hemprichii As Agents Of Phytoremediation In South Serangan","authors":"I. K. Budiarta, E. Faiqoh, I. Dirgayusa","doi":"10.24843/jmas.2020.v06.i02.p2","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p2","url":null,"abstract":"Seagrass ecosystem is part of the marine ecosystem that has quite important ecological role. Halophila ovalis and Thalassia hemprichii are seagrass species have the potential to become an agent of phytoremediation by determining the concentration of heavy metals Pb and Cd that have accumulated in them. This study was conducted in January 2018 in Southern Serangan Beach. The purpose of investigating the concentration of heavy metals in water, sediments, roots and leaves of seagrass and determine the bioaccumulation, translocation character and can be made as an agent for phytoremediation. The method used is purposive random sampling method, determined by 3 point. The point is determined from the condition closest to the port Benoa to the outermost point the bay mouth. Determination of station points is considering the presence of the most seagrasses. Results obtained in this study obtained average Pb concentration in water 0.0521 ppm, average metal Cd 0.1652 ppm, the average sediment Pb 75.8574 ppm, Cd 15.33593 ppm, concentration of Pb and Cd in roots and leaves of H. ovalis and T. hemprichii respectively Pb 42.4940 ppm, 45.5334 ppm, and 35.6207 ppm, 38.3931 ppm. Metal Cd 12.9708 ppm 14.8581 ppm Bioaccumulation value of seagrass is accumulator plants. Value of Pb and Cd translocation factors in seagrass H. ovalis (phyto-extraction) seagrass T. hemprichii Pb (phyto-extraction) and Cd (fitostabilization) phytoremediation values by both types of seagrass are greater in remediating heavy metal cadmium, meaning that both types of seagrass are better used for phytoremediation agents of heavy metal cadmium.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46666668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.24843/jmas.2020.v06.i02.p7
I. G. D. Bagaskara, Yulianto Suteja, I. G. Hendrawan
The Bali Strait has an important role for the coastal society of East Java and Bali, because as a supplier of lemuru fish. However, the quality of lemuru fish is decrease due to the presence of plastic waste that flow into the Bali Strait. Plastic is a material that’s difficult to decompose, but by using oxidation or mechanical processes causing plastic break to micrometer. Microplastic will be more easily eaten and have a direct impact on the food chain and cause morphological damage or chemical effects that carried by plastic. Based on these problems, its important to conduct research on spatial and temporal microplastic movements in the Bali Strait. However, the wide area of the Bali Strait and the amount of time needed to collect data in the field directly, numerical modeling method was use to solve this problem by using the Finite Volume Ocean Coastal Model (FVCOM) modeled in 3-D and microplastic divided into 3 sizes (0.3 mm, 1 mm, 5 mm). Spatially the movement of microplastic with a size of 0.3 mm, 1 mm, and 5 mm has a relatively similar movement, but has different position based on depth. Temporally the highest total number of microplastic sites is in the potential area of Blimbing Sari catching in the third week, and the potential area for catching Bukit on second week. Whereas in the potential areas of capture Senggrong, Anyir, Watu Anyir and Pang-Pang Bay were not found microplastic.
巴厘岛海峡对东爪哇和巴厘岛的沿海社会有着重要的作用，因为它是狐猴鱼的供应地。然而，由于流入巴厘岛海峡的塑料废物的存在，狐猴鱼的质量下降了。塑料是一种难以分解的材料，但通过氧化或机械过程使塑料破裂到微米级。微塑料将更容易被食用，并对食物链产生直接影响，造成塑料携带的形态损伤或化学效应。基于这些问题，开展巴厘岛海峡微塑性运动的时空研究具有重要意义。然而，由于巴厘岛海峡面积广阔，现场直接采集数据需要大量时间，因此采用三维有限体积海洋海岸模型(FVCOM)，将微塑料分为0.3 mm、1 mm、5 mm 3种尺寸，采用数值模拟方法解决了这一问题。在空间上，0.3 mm、1 mm和5 mm尺寸的微塑料的运动相对相似，但在深度上有不同的位置。从时间上看，第三周布林宾沙丽潜在捕捞区和第二周武吉潜在捕捞区的微塑料站点总数最高。而在潜在捕鲸区，未发现微塑料，如圣荣、安吉尔、瓦图安吉尔和庞庞湾。
{"title":"Pemodelan Pergerakan Mikroplastik di Selat Bali","authors":"I. G. D. Bagaskara, Yulianto Suteja, I. G. Hendrawan","doi":"10.24843/jmas.2020.v06.i02.p7","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p7","url":null,"abstract":"The Bali Strait has an important role for the coastal society of East Java and Bali, because as a supplier of lemuru fish. However, the quality of lemuru fish is decrease due to the presence of plastic waste that flow into the Bali Strait. Plastic is a material that’s difficult to decompose, but by using oxidation or mechanical processes causing plastic break to micrometer. Microplastic will be more easily eaten and have a direct impact on the food chain and cause morphological damage or chemical effects that carried by plastic. Based on these problems, its important to conduct research on spatial and temporal microplastic movements in the Bali Strait. However, the wide area of the Bali Strait and the amount of time needed to collect data in the field directly, numerical modeling method was use to solve this problem by using the Finite Volume Ocean Coastal Model (FVCOM) modeled in 3-D and microplastic divided into 3 sizes (0.3 mm, 1 mm, 5 mm). Spatially the movement of microplastic with a size of 0.3 mm, 1 mm, and 5 mm has a relatively similar movement, but has different position based on depth. Temporally the highest total number of microplastic sites is in the potential area of Blimbing Sari catching in the third week, and the potential area for catching Bukit on second week. Whereas in the potential areas of capture Senggrong, Anyir, Watu Anyir and Pang-Pang Bay were not found microplastic.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44236609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.24843/jmas.2020.v06.i02.p1
Made Ayu Pratiwi, N. Ernawati, N. Wijayanti
Fishes are an open access resource so that monitoring of fishing in the sea is very difficult. It is feared will lead to overfishing which eventually led to a drastic reduction in fish stocks in nature. So that people will be faced with the problem of scarcity of fish resources. One of the fish landing sites in Bali is Pangkalan Pendaratan Ikan (PPI) Kedonganan located in Fishery Management Area of Republic Indonesia (WPP-RI) 713. Therefore, it is necessary to understanding the current status of fish resources is very important in order to be a strong foundation in the management fisheries in PPI Kedonganan. The study was conducted by assessing five indicators of fish resources (fish size, yuwana fish, species composition, range collapse, and ETP species) by establishing a set of criteria, scores and weights and analyzed by multi-criteria analysis (MCA) approach. There found 16 species of catch fish with Cob Fish as dominant catch fish (54%). The trend of changes in fish size has increased significantly by + 90.18% of the initial length (Indicator of fish size). An average of 99% of fish catched were the target fish (Indicator of species composition). An average of 28.33% of fish catches included yuwana fish (Indicator of yuwana fish proportion). The results of interviews, it was found that 73% of fishermen state that fishing areas increasingly difficult from year to year (Indicator ranges collapse). There were <20% of fish catches including protected species (Scomberomorus commerson and Sphyrna lewini). It is also supported based on fisherman interview data that there were still protected fish such as turtles, sharks and rays that are caught but in small quantities (Indicator of ETP fish species). The result of composite analysis showed that the status of fish resources in Kedonganan was still very good with composite value of 86.1.
鱼类是一种开放获取的资源，因此对海上捕捞进行监测是非常困难的。人们担心这将导致过度捕捞，最终导致自然界鱼类资源的急剧减少。因此，人们将面临鱼类资源稀缺的问题。巴厘岛的一个鱼类登陆点是位于印度尼西亚共和国渔业管理区(WPP-RI) 713的Pangkalan Pendaratan Ikan (PPI) Kedonganan。因此，有必要了解鱼类资源的现状，以便为克东亚南PPI渔业管理奠定坚实的基础。通过建立一套评价标准、得分和权重，对鱼类资源的5个指标(鱼的大小、鱼的种类组成、范围缩小和ETP种类)进行了评价，并采用多准则分析(MCA)方法进行了分析。共发现16种渔获物，以雄棒鱼为优势渔获物(54%)。鱼体尺寸变化趋势显著增加了初始长度(鱼体尺寸指标)的+ 90.18%。平均99%的捕获鱼是目标鱼(物种组成指标)。渔获量中平均有28.33%包括鱼湾鱼(鱼湾鱼比例指标)。访谈结果显示，73%的渔民表示，捕鱼区域的难度逐年增加(指标范围崩溃)。包括保护物种(商业鱼和勒维尼鱼)在内的渔获量<20%。渔民访谈数据也支持这一观点，即仍有海龟、鲨鱼和鳐鱼等受保护鱼类被捕捞，但数量很少(ETP鱼类品种指标)。综合分析结果表明，克东阿南鱼类资源状况仍然很好，综合值为86.1。
{"title":"Penilaian Status Sumberdaya Ikan Hasil Tangkapan Dominan yang Didaratkan di PPI Kedonganan dengan Pendekatan Multi-Criteria Analysis (MCA)","authors":"Made Ayu Pratiwi, N. Ernawati, N. Wijayanti","doi":"10.24843/jmas.2020.v06.i02.p1","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p1","url":null,"abstract":"Fishes are an open access resource so that monitoring of fishing in the sea is very difficult. It is feared will lead to overfishing which eventually led to a drastic reduction in fish stocks in nature. So that people will be faced with the problem of scarcity of fish resources. One of the fish landing sites in Bali is Pangkalan Pendaratan Ikan (PPI) Kedonganan located in Fishery Management Area of Republic Indonesia (WPP-RI) 713. Therefore, it is necessary to understanding the current status of fish resources is very important in order to be a strong foundation in the management fisheries in PPI Kedonganan. The study was conducted by assessing five indicators of fish resources (fish size, yuwana fish, species composition, range collapse, and ETP species) by establishing a set of criteria, scores and weights and analyzed by multi-criteria analysis (MCA) approach. There found 16 species of catch fish with Cob Fish as dominant catch fish (54%). The trend of changes in fish size has increased significantly by + 90.18% of the initial length (Indicator of fish size). An average of 99% of fish catched were the target fish (Indicator of species composition). An average of 28.33% of fish catches included yuwana fish (Indicator of yuwana fish proportion). The results of interviews, it was found that 73% of fishermen state that fishing areas increasingly difficult from year to year (Indicator ranges collapse). There were <20% of fish catches including protected species (Scomberomorus commerson and Sphyrna lewini). It is also supported based on fisherman interview data that there were still protected fish such as turtles, sharks and rays that are caught but in small quantities (Indicator of ETP fish species). The result of composite analysis showed that the status of fish resources in Kedonganan was still very good with composite value of 86.1.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46199111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-16DOI: 10.24843/jmas.2020.v06.i01.p18
A. Dewi, E. W. Suryaningtyas
Seaweed farmers on Kutuh Beach experienced problems in seaweed cultivation activities, namely that seaweed cannot grow well. This is due to the large number of predators that ate seaweed in the cultivated area. One method that can be used to overcome this problem was using bags in seaweed cultivation. The purpose of the research that was carried out in July-October 2018 was to determine the effect of using bags on seaweed cultivation in Kutuh Beach waters. The method used in this research was experimental using two treatments (planting seaweed using bags and without bags) and three replications. Water quality parameters measured as supporting data ware DO, pH, salinity, temperature, nitrate, and phosphate. The result of this study was the growth of seaweed cultivated using bags is better than the growth of seaweed cultivated without bags.
{"title":"Pola Pertumbuhan Rumput Laut Yang Menggunakan Kantong Dan Tanpa Kantong Di Perairan Pantai Kutuh, Badung, Bali","authors":"A. Dewi, E. W. Suryaningtyas","doi":"10.24843/jmas.2020.v06.i01.p18","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i01.p18","url":null,"abstract":"Seaweed farmers on Kutuh Beach experienced problems in seaweed cultivation activities, namely that seaweed cannot grow well. This is due to the large number of predators that ate seaweed in the cultivated area. One method that can be used to overcome this problem was using bags in seaweed cultivation. The purpose of the research that was carried out in July-October 2018 was to determine the effect of using bags on seaweed cultivation in Kutuh Beach waters. The method used in this research was experimental using two treatments (planting seaweed using bags and without bags) and three replications. Water quality parameters measured as supporting data ware DO, pH, salinity, temperature, nitrate, and phosphate. The result of this study was the growth of seaweed cultivated using bags is better than the growth of seaweed cultivated without bags.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42772555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-25DOI: 10.24843/jmas.2020.v06.i01.p17
Putu Maya Witariningsih, Yulianto Suteja, I. N. W. Putra
Indonesian Throughflow (ITF) is a circulation of water mass in Indonesian, water are carrying from the Pacific Ocean to the Indian Ocean. When the water mass from the Pacific Ocean to Indonesian waters will mix with the water mass of Indian Ocean. One of the outflow is the Lombok Strait. The mixing of process bring nutrient-rich in bottom layer to rise to the upper layer and it will affect the fertility. One indicator of water fertility by measuring the abundance and distribution of plankton. The aims of this study to determine the temporal of composition species and fluctuations of plankton abundance temporally in the waters of the Lombok Strait. The study was conducted in the Lombok Strait in November 2017. Data was collected at one point and sample was only take on the surface of the waters. The genus composition of the most widely found phytoplankton Bacillariophyceae class (19 genera) and from the widely obtained zooplankton Hexanauplia class (7 genera). The highest abundance of phytoplankton occurs during high tide during afternoon. This phenomenon is caused by photosynthesis of phytoplankton in the water surface. In contrast to the abundance of the highest zooplankton occurs during high tide in the early morning. This is caused by zooplankton's daily vertical migration and negative phototaxis. Comparison of phytoplankton abundance with zooplankton abundance is inversely proportional, zooplankton abundance depends on abundance of phytoplankton, because phytoplankton grow faster by cell substraction, compared to phototaxis of in zooplankton. It is also a predation of phytoplankton by zooplankton.
{"title":"Komposisi Jenis Dan Fluktuasi Kelimpahan Plankton Secara Temporal Di Perairan Selat Lombok","authors":"Putu Maya Witariningsih, Yulianto Suteja, I. N. W. Putra","doi":"10.24843/jmas.2020.v06.i01.p17","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i01.p17","url":null,"abstract":"Indonesian Throughflow (ITF) is a circulation of water mass in Indonesian, water are carrying from the Pacific Ocean to the Indian Ocean. When the water mass from the Pacific Ocean to Indonesian waters will mix with the water mass of Indian Ocean. One of the outflow is the Lombok Strait. The mixing of process bring nutrient-rich in bottom layer to rise to the upper layer and it will affect the fertility. One indicator of water fertility by measuring the abundance and distribution of plankton. The aims of this study to determine the temporal of composition species and fluctuations of plankton abundance temporally in the waters of the Lombok Strait. The study was conducted in the Lombok Strait in November 2017. Data was collected at one point and sample was only take on the surface of the waters. The genus composition of the most widely found phytoplankton Bacillariophyceae class (19 genera) and from the widely obtained zooplankton Hexanauplia class (7 genera). The highest abundance of phytoplankton occurs during high tide during afternoon. This phenomenon is caused by photosynthesis of phytoplankton in the water surface. In contrast to the abundance of the highest zooplankton occurs during high tide in the early morning. This is caused by zooplankton's daily vertical migration and negative phototaxis. Comparison of phytoplankton abundance with zooplankton abundance is inversely proportional, zooplankton abundance depends on abundance of phytoplankton, because phytoplankton grow faster by cell substraction, compared to phototaxis of in zooplankton. It is also a predation of phytoplankton by zooplankton.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44632283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-23DOI: 10.24843/jmas.2020.v06.i01.p16
Ade Riestiari Sudarmawan, Yulianto Suteja, W. Widiastuti
Benoa Bay is the center of estuary of the six rivers in Bali Island. One of the sources of pollution is the input from the river to the waters, especially the liquid waste from the textile industry that contains heavy metals particulary Lead. Moreover, Benoa Bay is a busy area with shipping activities. Shipping activities could direct and indirectly contaminate the waters with Lead from its oil waste. The purposes of this research are to examine the Lead concentration in the surface waters and plankton, and to determine lead bioaccumulation in plankton in the Benoa Bay. The samplings were conducted on May 2018. Lead concentration in the waters and plankton were analized using Inductively Coupled Plasma Emission (ICPE) with wet destruction method. The result shows that Benoa Bay is heavily contaminated by Lead. According to the Decree of the Minister Environment No. 51 of 2004 about Sea Water Quality Standards, concentration of lead in sea waters is <0.008 mg/L. Concentration of lead in Benoa Bay water surface is 0.001 to 0.053 mg/L and in plankton is 0.001 to 9.287 mg/Kg. It is found that the bioconcentration factor (BCF) of plankton is 593.45. This study emphasize that plankton are able to bioaccumulate Lead.
{"title":"Logam Berat Timbal (Pb) pada Air dan Plankton di Teluk Benoa, Badung, Bali","authors":"Ade Riestiari Sudarmawan, Yulianto Suteja, W. Widiastuti","doi":"10.24843/jmas.2020.v06.i01.p16","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i01.p16","url":null,"abstract":"Benoa Bay is the center of estuary of the six rivers in Bali Island. One of the sources of pollution is the input from the river to the waters, especially the liquid waste from the textile industry that contains heavy metals particulary Lead. Moreover, Benoa Bay is a busy area with shipping activities. Shipping activities could direct and indirectly contaminate the waters with Lead from its oil waste. The purposes of this research are to examine the Lead concentration in the surface waters and plankton, and to determine lead bioaccumulation in plankton in the Benoa Bay. The samplings were conducted on May 2018. Lead concentration in the waters and plankton were analized using Inductively Coupled Plasma Emission (ICPE) with wet destruction method. The result shows that Benoa Bay is heavily contaminated by Lead. According to the Decree of the Minister Environment No. 51 of 2004 about Sea Water Quality Standards, concentration of lead in sea waters is <0.008 mg/L. Concentration of lead in Benoa Bay water surface is 0.001 to 0.053 mg/L and in plankton is 0.001 to 9.287 mg/Kg. It is found that the bioconcentration factor (BCF) of plankton is 593.45. This study emphasize that plankton are able to bioaccumulate Lead.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46078716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-23DOI: 10.24843/jmas.2020.v06.i01.p15
A. Novianti, I. Karang, I. N. Putra
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Pub Date : 2020-09-22DOI: 10.24843/jmas.2020.v06.i01.p14
Shanti Paramita Jayanti, Pande Gde Sasmita Julyantoro, Gde Raka Angga Kartika
Buyan Lake is located in Bali Province, this lake has a variety of fish species which several of those species are introduced species that called as alien fish. The relationship interaction between native fish and introduced fish can be described based on the study of food habit and competition of food types. The study was conducted from January to March 2018. Types of fish caught in Buyan Lake during the study were 7 species of fish namely Oreochromis niloticus, Amatitlania nigrofasciata, Osteochilus vittatus, Cyprinus carpio, Xiphophorus hellerii var. 1, Xiphophorus hellerii var. 2, and Rasbora lateristriata. The results showed that the fish with the highest ISC value was Amatitlania nigrofasciata, while the fish with the lowest ISC (Index of Stomach Content) value was Xiphophorus hellerii var. 1. The standard deviation range of almost all fish species is close to zero, so it is suspected that the contents of the stomach are nearly similiar. Amatitlania nigrofasciata with the highest standard deviation values are thought to have a variety of gastric contents. Based on the analysis of the contents of the stomach content, Oreochromis niloticus, Osteochilus vittatus, and Xiphophorus hellerii var. 2 are belonging to herbivorous fish. While Amatitlania nigrofasciata, Cyprinus carpio, Xiphophorus hellerii var. 1, and Rasbora lateristriata are belonging to omnivorous fish, which are tending to herbivores. The competition of food type is quite strict, there is similarity of food among species of fish in Buyan Lake, which is mean that they are fighting over the same food resources.
布延湖位于巴厘岛省，这个湖有各种各样的鱼类，其中一些物种是引进的物种，被称为外来鱼。原生鱼和引进鱼之间的相互作用关系可以从食物习性和食物类型竞争的研究来描述。该研究于2018年1月至3月进行。布延湖捕获的鱼类类型有7种，分别为:尼罗鱼(Oreochromis niloticus)、黑膜阿玛提亚鱼(Amatitlania nigrofasciata)、骨鱼(Osteochilus vitatus)、鲤鱼(Cyprinus carpio)、黑鳞鱼(xiphohorus hellerii var. 1)、黑鳞鱼(xiphohorus hellerii var. 2)和红鳞鱼(Rasbora lateristriata)。结果表明，ISC值最高的鱼为黑膜Amatitlania nigrofasciata, ISC值最低的鱼为Xiphophorus hellerii。几乎所有鱼类的标准差范围都接近于零，因此怀疑胃的内容物几乎是相似的。标准偏差值最高的黑筋膜苋被认为有多种胃内容物。根据胃内容物的含量分析，nilochromis、Osteochilus vitatus和xiphohorus hellerii var. 2属于草食性鱼类。而黑斑麻鱼、鲤鱼、棘鱼1型和拉斯特拉鱼属于杂食性鱼类，向植食性鱼类发展。食性竞争相当激烈，布岩湖各鱼种之间的食性具有相似性，这意味着它们在争夺相同的食物资源。
{"title":"The Competition among Fish Species Based on Types of Food in Buyan Lake, Bali, Indonesia","authors":"Shanti Paramita Jayanti, Pande Gde Sasmita Julyantoro, Gde Raka Angga Kartika","doi":"10.24843/jmas.2020.v06.i01.p14","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i01.p14","url":null,"abstract":"Buyan Lake is located in Bali Province, this lake has a variety of fish species which several of those species are introduced species that called as alien fish. The relationship interaction between native fish and introduced fish can be described based on the study of food habit and competition of food types. The study was conducted from January to March 2018. Types of fish caught in Buyan Lake during the study were 7 species of fish namely Oreochromis niloticus, Amatitlania nigrofasciata, Osteochilus vittatus, Cyprinus carpio, Xiphophorus hellerii var. 1, Xiphophorus hellerii var. 2, and Rasbora lateristriata. The results showed that the fish with the highest ISC value was Amatitlania nigrofasciata, while the fish with the lowest ISC (Index of Stomach Content) value was Xiphophorus hellerii var. 1. The standard deviation range of almost all fish species is close to zero, so it is suspected that the contents of the stomach are nearly similiar. Amatitlania nigrofasciata with the highest standard deviation values are thought to have a variety of gastric contents. Based on the analysis of the contents of the stomach content, Oreochromis niloticus, Osteochilus vittatus, and Xiphophorus hellerii var. 2 are belonging to herbivorous fish. While Amatitlania nigrofasciata, Cyprinus carpio, Xiphophorus hellerii var. 1, and Rasbora lateristriata are belonging to omnivorous fish, which are tending to herbivores. The competition of food type is quite strict, there is similarity of food among species of fish in Buyan Lake, which is mean that they are fighting over the same food resources.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42716340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-18DOI: 10.24843/jmas.2020.v06.i01.p13
Kolis Pratama, I. W. Arthana, D. Pebriani
Sindhu Beach is one of the beaches which located in Sanur. The coastal areas of Sindhu Beach has long been used for various economic activities, such as recreation areas or marine tourism. So that these activities can adversely affect the sustainability of the seagrass ecosystem as a habitat for various types of aquatic biota, especially fish. This study aims to determine the composition of fish community species and structures, to know the types of seagrass, and also to know the condition of water quality in the seagrass ecosystem of Sindhu Beach, Sanur, Bali. This study has been conducted from January to February 2018 by direct observation method. The results of the composition of fish species as a whole found 537 of fish that consisting of 22 species and it came from 11 families. The overall value of community structure is obtain by the value of the diversity index (H') of 2.68, uniformity index (E) 0.87, and the dominance index (C) 0.09. The types of seagrasses which found in the study location was consist of 8 species of seagrass covering Enhalus acoroides, Syringodium isoetifolium, Halodule pinifolia, Halodule uninervis, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, and Halophila spinulosa. The result of measurement of water quality parameters from all stations were obtain the average measurement of dissolved oxygen 7,1 mg / l, salinity 30o/oo, pH 8,24, and temperature 29,80C. The result of measurement of water quality parameter shows that the condition of seagrass ecosystem of Sindhu Beach was still considered optimal for marine life.
{"title":"Komposisi Jenis dan Struktur Komunitas Ikan di Ekosistem Lamun Pantai Sindhu, Sanur, Bali","authors":"Kolis Pratama, I. W. Arthana, D. Pebriani","doi":"10.24843/jmas.2020.v06.i01.p13","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i01.p13","url":null,"abstract":"Sindhu Beach is one of the beaches which located in Sanur. The coastal areas of Sindhu Beach has long been used for various economic activities, such as recreation areas or marine tourism. So that these activities can adversely affect the sustainability of the seagrass ecosystem as a habitat for various types of aquatic biota, especially fish. This study aims to determine the composition of fish community species and structures, to know the types of seagrass, and also to know the condition of water quality in the seagrass ecosystem of Sindhu Beach, Sanur, Bali. This study has been conducted from January to February 2018 by direct observation method. The results of the composition of fish species as a whole found 537 of fish that consisting of 22 species and it came from 11 families. The overall value of community structure is obtain by the value of the diversity index (H') of 2.68, uniformity index (E) 0.87, and the dominance index (C) 0.09. The types of seagrasses which found in the study location was consist of 8 species of seagrass covering Enhalus acoroides, Syringodium isoetifolium, Halodule pinifolia, Halodule uninervis, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, and Halophila spinulosa. The result of measurement of water quality parameters from all stations were obtain the average measurement of dissolved oxygen 7,1 mg / l, salinity 30o/oo, pH 8,24, and temperature 29,80C. The result of measurement of water quality parameter shows that the condition of seagrass ecosystem of Sindhu Beach was still considered optimal for marine life.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42292714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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