Pub Date : 2020-12-14DOI: 10.24843/jmas.2020.v06.i02.p14
Pande Ditha Prasatia, Elok Faiqoh, I. Dharma, M. A. Pratiwi
Indonesian tuna fisheries dominate world tuna production. One of the priority water areas as tuna fishing catchment is the Sendang Biru Aquatic area, because it has Pondokdadap Fish Landing Center and is the center of largest fishing activity in Malang. The international market wants a guarantee of high quality and food safety, this is supported by the implementation of traceability systems. Own traceability is way to guarantee food quality by tracking information about the position of product. The purpose of this study is to describe the supply chain system of PT Hatindo Makmur, describe the readiness to implement traceability, and develop a strategy to support the implementation of traceability. The method used is a survey and questionnaire using descriptive analysis. The results of the analysis show that the Supply chain system is carried out by several parties fishermen, PPI Pondokdapdap, CV Berkah Alam, and PT Hatindo Makmur. The readiness of fishermen in Sendang Biru the implementation of traceability systems is categorized as ready with a percentage of 79%. The strategy that can be implemented is optimize the use of tuna resources, develop a simple traceability system for handling, collaborate with NGOs to socialization and training traceability and application to fishermen, use modern technology in recording and managing permits, Providing incentives to fishermen from companies to follow regulations, monitoring and controlling fishing activities, developing owned facilities to manage ship registration and licensing at ports, increasing socialization of the importance of catch data to the results of the sale.
{"title":"Analisis Sistem Traceability Produk Tuna Ditinjau Dari Aspek Supply chain PT Hatindo Makmur","authors":"Pande Ditha Prasatia, Elok Faiqoh, I. Dharma, M. A. Pratiwi","doi":"10.24843/jmas.2020.v06.i02.p14","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p14","url":null,"abstract":"Indonesian tuna fisheries dominate world tuna production. One of the priority water areas as tuna fishing catchment is the Sendang Biru Aquatic area, because it has Pondokdadap Fish Landing Center and is the center of largest fishing activity in Malang. The international market wants a guarantee of high quality and food safety, this is supported by the implementation of traceability systems. Own traceability is way to guarantee food quality by tracking information about the position of product. The purpose of this study is to describe the supply chain system of PT Hatindo Makmur, describe the readiness to implement traceability, and develop a strategy to support the implementation of traceability. The method used is a survey and questionnaire using descriptive analysis. The results of the analysis show that the Supply chain system is carried out by several parties fishermen, PPI Pondokdapdap, CV Berkah Alam, and PT Hatindo Makmur. The readiness of fishermen in Sendang Biru the implementation of traceability systems is categorized as ready with a percentage of 79%. The strategy that can be implemented is optimize the use of tuna resources, develop a simple traceability system for handling, collaborate with NGOs to socialization and training traceability and application to fishermen, use modern technology in recording and managing permits, Providing incentives to fishermen from companies to follow regulations, monitoring and controlling fishing activities, developing owned facilities to manage ship registration and licensing at ports, increasing socialization of the importance of catch data to the results of the sale.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45765366","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 : 2020-12-09DOI: 10.24843/jmas.2020.v06.i02.p13
Tuti Nursiani, Yoga Satria Putra, M. Muhardi
Sungai Pawan merupakan sungai terpanjang di Kabupaten Ketapang yang telah mengalami pendangkalan akibat adanya pengendapan sedimen di dasar sungai. Penelitian mengenai transpor sedimen di daerah yang berpotensi mengalami pendangkalan perlu dilakukan. Tujuan penelitian ini adalah untuk mengidentifikasi sebaran serta jenis sedimen dasar yang ada di daerah tersebut dengan menggunakan metode hidrometer. Penelitian ini dilakukan pada lima lokasi, setiap lokasi dilakukan tiga titik pengukuran. Hasil penelitian menunjukkan bahwa jenis sedimen dasar berupa lempung, lempung berlanau, tanah liat berlempung, tanah liat, tanah liat berlanau, tanah liat berpasir, dan pasir bertanah liat. Sedangkan, sebaran fraksi sedimen berupa pasir (0.05 – 2 mm) sebesar 32.07 %, lanau (0.002-0.05 mm) sebesar 42.60 %, dan lempung (<0,002 mm) sebesar 24.87%.
{"title":"Sebaran Fraksi dan Jenis Sedimen Dasar (Bed-Load) di Sungai Pawan Kecamatan Delta Pawan Kabupaten Ketapang","authors":"Tuti Nursiani, Yoga Satria Putra, M. Muhardi","doi":"10.24843/jmas.2020.v06.i02.p13","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p13","url":null,"abstract":"Sungai Pawan merupakan sungai terpanjang di Kabupaten Ketapang yang telah mengalami pendangkalan akibat adanya pengendapan sedimen di dasar sungai. Penelitian mengenai transpor sedimen di daerah yang berpotensi mengalami pendangkalan perlu dilakukan. Tujuan penelitian ini adalah untuk mengidentifikasi sebaran serta jenis sedimen dasar yang ada di daerah tersebut dengan menggunakan metode hidrometer. Penelitian ini dilakukan pada lima lokasi, setiap lokasi dilakukan tiga titik pengukuran. Hasil penelitian menunjukkan bahwa jenis sedimen dasar berupa lempung, lempung berlanau, tanah liat berlempung, tanah liat, tanah liat berlanau, tanah liat berpasir, dan pasir bertanah liat. Sedangkan, sebaran fraksi sedimen berupa pasir (0.05 – 2 mm) sebesar 32.07 %, lanau (0.002-0.05 mm) sebesar 42.60 %, dan lempung (<0,002 mm) sebesar 24.87%.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42298802","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 : 2020-12-07DOI: 10.24843/jmas.2020.v06.i02.p11
Boiris Benet Sinaga, Yulianto Suteja, I. Dharma
Total padatan tersuspensi (Total Suspended Solid) adalah partikel-partikel atau komponen hidup (biotik) seperti fitoplankton, zooplankton, bakteri, fungi, ataupun komponen mati (abiotik) seperti detritus dan zat padat (pasir, lumpur, dan tanah liat) yang tersuspensi dalam air. Total padatan tersuspensi berkaitan dengan kekeruhan. Oleh karena itu, kekeruhan dan total padatan tersuspensi dapat dijadikan sebagai parameter kualitas air yang bisa menentukan apakah kondisi perairan tersebut baik atau tidak. Selat Lombok merupakan perairan semi tertutup yang dipengaruhi oleh pengaruh lokal seperti masukan dari sungai. Hal ini tentunya akan mempengaruhi total padatan tersuspensi yang terdapat pada perairan Selat Lombok. Penelitian ini dilaksanakan pada bulan November 2017. Pengambilan sampel lapangan dilaksanakan di Perairan Selat Lombok yang berada pada titik 116°1'18"BT, 8°34'12"LS. Waktu pengambilan sampel dilakukan selama 1 x 24 jam, di mulai pada tanggal 3 November sampai 4 November 2017. Dari hasil yang didapatkan, TSS pada Perairan Selat Lombok mengalami fluktuasi. Konsentrasi TSS tertinggi didapatkan di kedalaman 0 saat kondisi perairan pasang menuju surut. Konsentrasi TSS terendah didapatkan saat kondisi surut menuju pasang. Nilai konsentrasi kekeruhan pada kedalaman 5 – 10-meter berkisar antara 0-0,2 NTU. Hubungan kekeruhan dan total padatan tersuspensi berbeda tiap kedalamannya. Pola sebaran vertikal kekeruhan pada penelitian ini menunjukkan hasil yang signifikan antara permukaan dan dasar perairan. Nilai kekeruhan semakin mengecil seiring dengan bertambahnya kedalaman dan waktu.
总悬浮固体是悬浮在水中的颗粒或活性成分，如浮游植物、浮游动物、细菌、真菌，或死亡成分，如碎屑和固体物质（沙、泥和粘土）。与损坏相关的总悬浮密度。因此，湿度和总悬浮密度可以作为水质参数来确定水条件是否良好。龙目湾是一个半封闭水域，受当地影响，如河流入口。这肯定会影响南龙目海域的总悬浮密度。本研究于2017年11月进行。现场采样在南龙目水中116°1'18“BT，8°34'12”LS处进行。采样时间为1 x 24小时，从2017年11月3日至11月4日。从所获得的结果来看，南龙博克水域的TSS有所波动。当水条件安装到角度时，在深度0处达到最高TSS浓度。当压力条件开启时，可获得最低TSS浓度。5-10米深处的浓度值在0-0.2 NTU之间。在不同深度，混沌与总悬浮密度的关系是不同的。本研究的垂直扩散模式显示了地表和基底之间的显著结果。混沌的值随着深度和时间的增加而减小。
{"title":"Fluktuasi Total Padatan Tersuspensi (Total Suspended Solid) dan Kekeruhan di Selat Lombok","authors":"Boiris Benet Sinaga, Yulianto Suteja, I. Dharma","doi":"10.24843/jmas.2020.v06.i02.p11","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p11","url":null,"abstract":"Total padatan tersuspensi (Total Suspended Solid) adalah partikel-partikel atau komponen hidup (biotik) seperti fitoplankton, zooplankton, bakteri, fungi, ataupun komponen mati (abiotik) seperti detritus dan zat padat (pasir, lumpur, dan tanah liat) yang tersuspensi dalam air. Total padatan tersuspensi berkaitan dengan kekeruhan. Oleh karena itu, kekeruhan dan total padatan tersuspensi dapat dijadikan sebagai parameter kualitas air yang bisa menentukan apakah kondisi perairan tersebut baik atau tidak. Selat Lombok merupakan perairan semi tertutup yang dipengaruhi oleh pengaruh lokal seperti masukan dari sungai. Hal ini tentunya akan mempengaruhi total padatan tersuspensi yang terdapat pada perairan Selat Lombok. Penelitian ini dilaksanakan pada bulan November 2017. Pengambilan sampel lapangan dilaksanakan di Perairan Selat Lombok yang berada pada titik 116°1'18\"BT, 8°34'12\"LS. Waktu pengambilan sampel dilakukan selama 1 x 24 jam, di mulai pada tanggal 3 November sampai 4 November 2017. Dari hasil yang didapatkan, TSS pada Perairan Selat Lombok mengalami fluktuasi. Konsentrasi TSS tertinggi didapatkan di kedalaman 0 saat kondisi perairan pasang menuju surut. Konsentrasi TSS terendah didapatkan saat kondisi surut menuju pasang. Nilai konsentrasi kekeruhan pada kedalaman 5 – 10-meter berkisar antara 0-0,2 NTU. Hubungan kekeruhan dan total padatan tersuspensi berbeda tiap kedalamannya. Pola sebaran vertikal kekeruhan pada penelitian ini menunjukkan hasil yang signifikan antara permukaan dan dasar perairan. Nilai kekeruhan semakin mengecil seiring dengan bertambahnya kedalaman dan waktu.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47371887","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 : 2020-12-07DOI: 10.24843/jmas.2020.v06.i02.p12
Pande Chrisna Aryasuta, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha
This study uses two environmentally friendly fishing gears namely gill net and hand line. The length of one set of hand line is 100 m and the length of one set of gill nets is 250 m. The purpose of this study was to determine the number of catches, species composition of catches and the efficiency of fishing gear that provided benefits for the fishermen of Kusamba Village. This data collection was carried out in field plunge directly with fishermen using the one day trip method for 35 trips during the tuna fishing season by Kusamba Village fishermen. Auxis sp is one type of fish that is the main target of the catch of fishermen in Kusamba Village. Auxis sp often follows the current circulation, the catch of Auxis sp on the fishermen of Kusamba Village has a different amount of production every day. In terms of Auxis sp catches by Kusamba Village Fishermen who use two fishing gear are dominated by gill nets and the quality aspect is dominated by hand linecatches. It is known that there are two types of tuna, namely Auxis rochei and Auxis thazard. The catch is in principle the output of fishing activities, while the effort needed in principle is an input from the fishing activities, fisheries production in an area has increased or decreased can be seen from the results of CPUE. The highest CPUE value of gill nets is 53.75 tails / effort, the highest CPUE value of hand line is 75 tails / effort.
{"title":"Perbandingan Produktivitas Pancing Ulur (HandLine) Dan Jaring Insang (Gill net) Nelayan Desa Kusamba, Klungkung, Bali Terhadap Hasil Tangkapan Ikan Tongkol (Auxis sp.)","authors":"Pande Chrisna Aryasuta, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmas.2020.v06.i02.p12","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p12","url":null,"abstract":"This study uses two environmentally friendly fishing gears namely gill net and hand line. The length of one set of hand line is 100 m and the length of one set of gill nets is 250 m. The purpose of this study was to determine the number of catches, species composition of catches and the efficiency of fishing gear that provided benefits for the fishermen of Kusamba Village. This data collection was carried out in field plunge directly with fishermen using the one day trip method for 35 trips during the tuna fishing season by Kusamba Village fishermen. Auxis sp is one type of fish that is the main target of the catch of fishermen in Kusamba Village. Auxis sp often follows the current circulation, the catch of Auxis sp on the fishermen of Kusamba Village has a different amount of production every day. In terms of Auxis sp catches by Kusamba Village Fishermen who use two fishing gear are dominated by gill nets and the quality aspect is dominated by hand linecatches. It is known that there are two types of tuna, namely Auxis rochei and Auxis thazard. The catch is in principle the output of fishing activities, while the effort needed in principle is an input from the fishing activities, fisheries production in an area has increased or decreased can be seen from the results of CPUE. The highest CPUE value of gill nets is 53.75 tails / effort, the highest CPUE value of hand line is 75 tails / effort.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46121723","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 : 2020-12-04DOI: 10.24843/jmas.2020.v06.i02.p6
Naila Makfiya, Igb Siladharma, I. Karang
Construction along the coastline has impacts and threats to coastal areas. Incompatibility and deficiency in building construction along the coast can be detected by observing shoreline changes that happen before and after construction. Along with technology advances and science, coastline change can be detected by using numerical modeling. Beach in Kuta District in the Bali Province is a tourist destination that has a coastal erosion problem. Analysis of shoreline changes at the study location is estimated by using numerical simulations (one-line model) to find out the coastline changes that happen on Kuta District for 25 years after the construction of beach protector and sand nourishment. The results of numerical modeling shoreline changes in all study locations over 25 years show an erosion and accretion with the amount of erosion change rates ranging from 1 to 2 meters per year. The analysis coastline change in Kuta District shows that the changes are classified as moderate to large, on the beaches in the north of Kuta Village such as on the beach of Legian Village and beach of Seminyak Village which did not have protection or beach protector such as the German Beach and the Kuta Beach with breakwater, groyne, revetments or handling erosion with sand nourishment.
{"title":"Analisis Perubahan Garis Pantai dengan Menggunakan Metode One-Line Model (Studi Kasus: Pantai Kecamatan Kuta, Bali)","authors":"Naila Makfiya, Igb Siladharma, I. Karang","doi":"10.24843/jmas.2020.v06.i02.p6","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p6","url":null,"abstract":"Construction along the coastline has impacts and threats to coastal areas. Incompatibility and deficiency in building construction along the coast can be detected by observing shoreline changes that happen before and after construction. Along with technology advances and science, coastline change can be detected by using numerical modeling. Beach in Kuta District in the Bali Province is a tourist destination that has a coastal erosion problem. Analysis of shoreline changes at the study location is estimated by using numerical simulations (one-line model) to find out the coastline changes that happen on Kuta District for 25 years after the construction of beach protector and sand nourishment. The results of numerical modeling shoreline changes in all study locations over 25 years show an erosion and accretion with the amount of erosion change rates ranging from 1 to 2 meters per year. The analysis coastline change in Kuta District shows that the changes are classified as moderate to large, on the beaches in the north of Kuta Village such as on the beach of Legian Village and beach of Seminyak Village which did not have protection or beach protector such as the German Beach and the Kuta Beach with breakwater, groyne, revetments or handling erosion with sand nourishment.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49065312","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 : 2020-12-04DOI: 10.24843/jmas.2020.v06.i02.p9
Andri Octapianus Purba, I. Dharma, Elok Faiqoh
Cetaceans are marine mammals whose entire life is in marine and fresh waters. Cetaceans consist of whales, dolphins, and porpois. The distribution of cetaceans is a matter that shows the points of emergence of cetaceans in a waters. Diversity index is to determine the diversity of a group by looking at the number of species in a group. The waters of Tejakula Subdistrict are one of the waters in North Bali. The waters of North Bali is one of the waters which has become a migration path for several species of cetaceans. As a cetacean migration pathway, there are many occurrences of cetaceans in the northern waters of Bali. One of the most famous locations for the emergence of cetaceans in Bali is the waters of the Tejakula District, so research on cetaceans in the waters of the Tejakula Subdistrict needs to be done. This study aims to determine the distribution and diversity of cetaceans in the waters of Tejaula District. This research was conducted for 3 months, namely in the months of July, August and September 2017. Research on the distribution of cetaceans was carried out to determine the cetacean emergence points. The types of cetaceans found during the three months of the study were Stenella longirostris, Stenella attenuata, Globicephala macrorhynchus, Steno bredanensis, Lagenodelphis hosei, and Grampus griseus. The diversity of cetaceans in the waters of the Tejakula sub-district in July was 0.55, August 1.24 and September 0.9. The cetacea diversity index in the study area was divided into two, namely the area outside the reserve 1.22 and the area in the reserve 0.55.
{"title":"Sebaran dan Keanekaragaman Cetacea saat Musim Timur di Perairan Tejakula, Buleleng, Bali","authors":"Andri Octapianus Purba, I. Dharma, Elok Faiqoh","doi":"10.24843/jmas.2020.v06.i02.p9","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p9","url":null,"abstract":"Cetaceans are marine mammals whose entire life is in marine and fresh waters. Cetaceans consist of whales, dolphins, and porpois. The distribution of cetaceans is a matter that shows the points of emergence of cetaceans in a waters. Diversity index is to determine the diversity of a group by looking at the number of species in a group. The waters of Tejakula Subdistrict are one of the waters in North Bali. The waters of North Bali is one of the waters which has become a migration path for several species of cetaceans. As a cetacean migration pathway, there are many occurrences of cetaceans in the northern waters of Bali. One of the most famous locations for the emergence of cetaceans in Bali is the waters of the Tejakula District, so research on cetaceans in the waters of the Tejakula Subdistrict needs to be done. This study aims to determine the distribution and diversity of cetaceans in the waters of Tejaula District. This research was conducted for 3 months, namely in the months of July, August and September 2017. Research on the distribution of cetaceans was carried out to determine the cetacean emergence points. The types of cetaceans found during the three months of the study were Stenella longirostris, Stenella attenuata, Globicephala macrorhynchus, Steno bredanensis, Lagenodelphis hosei, and Grampus griseus. The diversity of cetaceans in the waters of the Tejakula sub-district in July was 0.55, August 1.24 and September 0.9. The cetacea diversity index in the study area was divided into two, namely the area outside the reserve 1.22 and the area in the reserve 0.55.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43999852","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 : 2020-12-04DOI: 10.24843/jmas.2020.v06.i02.p10
I. G. Sumantra, Yulianto Suteja, I. N. W. Putra
Nitrate (NO3-) and phosphate (PO43-) are two parameters of water quality that are important for aquatic organism. Circulation of ocean currents can distribute nitrate and phosphate from one place to another. The current pattern in the waters of the Lombok Strait at the time of the tide moves from the north to the south by bringing the mass of water from the Pacific Ocean, while the movement of the current pattern at low tide moves from south to north by bringing the mass of water from the Indian Ocean. Therefore, this study aims to determine the fluctuations of Nitrate (NO3-) and Phosphate (PO43-) in Lombok Strait during one tidal period. This research was conducted on 3 - 5 November 2017 precisely at coordinates 116?1'18 "LS; -8?34'12 "BT. Sampling is done directly in the field. Seawater samples are taken on the surface and at a depth of 10 meters for 1 x 24 hours with an interval every 2 hours using a Vertical Water Sampler. Measurement of nitrate parameter using spectrophotometric method with Spectrophotometer SNI 6989 79-2011, while phosphate parameter using spectrophotometric method with UV-Vis Spectrophotometer, refer to SNI 06-6989 31-2005. The concentration of nitrate and phosphate at each time in the analysis and seen fluctuations. The concentration of nitrate and phosphate in Lombok Strait fluctuated during one tidal period. At high tide conditions, the concentrations of nitrate and phosphate are low and at low tide conditions high nitrate and phosphate concentrations.
{"title":"Fluktuasi Nitrat dan Fosfat Selama Satu Periode Pasang dan Surut di Selat Lombok","authors":"I. G. Sumantra, Yulianto Suteja, I. N. W. Putra","doi":"10.24843/jmas.2020.v06.i02.p10","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p10","url":null,"abstract":"Nitrate (NO3-) and phosphate (PO43-) are two parameters of water quality that are important for aquatic organism. Circulation of ocean currents can distribute nitrate and phosphate from one place to another. The current pattern in the waters of the Lombok Strait at the time of the tide moves from the north to the south by bringing the mass of water from the Pacific Ocean, while the movement of the current pattern at low tide moves from south to north by bringing the mass of water from the Indian Ocean. Therefore, this study aims to determine the fluctuations of Nitrate (NO3-) and Phosphate (PO43-) in Lombok Strait during one tidal period. This research was conducted on 3 - 5 November 2017 precisely at coordinates 116?1'18 \"LS; -8?34'12 \"BT. Sampling is done directly in the field. Seawater samples are taken on the surface and at a depth of 10 meters for 1 x 24 hours with an interval every 2 hours using a Vertical Water Sampler. Measurement of nitrate parameter using spectrophotometric method with Spectrophotometer SNI 6989 79-2011, while phosphate parameter using spectrophotometric method with UV-Vis Spectrophotometer, refer to SNI 06-6989 31-2005. The concentration of nitrate and phosphate at each time in the analysis and seen fluctuations. The concentration of nitrate and phosphate in Lombok Strait fluctuated during one tidal period. At high tide conditions, the concentrations of nitrate and phosphate are low and at low tide conditions high nitrate and phosphate concentrations.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42008152","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 : 2020-12-04DOI: 10.24843/jmas.2020.v06.i02.p8
I. Putra, I. Karang, Elok Faiqoh, A. R. As-syakur
Catching Tuna Fish (Euthynnus sp.) in territorial waters of Southeast Karangasem, Antiga Kelod Village using trolling is very influenced by the type of baited. In a manner line, there are two type of baited that used for trolling, fishworm and lure. The objective of this research is to determine the effectiveness and the effect of lure on tuna fish catch (Euthynnus sp.) In territorial waters of Southeast Karangasem, Antiga Kelod Village. All of three baits are made about the size of the baits and have the same color, there are blue-white, red-white, and green-white, and it’s operated simultaneously on one unit trolling line for 12 times . This research using descriptive comparative analysis and complete randomized design statistic analysis (RAL). The results of this research obtain, the blue-wait color of the bait can produce 146 tuna fish (Euthynnus sp.) with an effectiveness value 34.27%, with average value of results catch is 12 tails on once trip. While for red-white color, produce 220 tuna fish with an effectiveness value 51.64%, and the average value of results catch is 18 tails on once trip, and the produce of green-white color is 60 tuna fish with effectiveness value 14.08%, the average outcome catch 5 tails on once trip. Based on the results of the research The red-white bait was a bait with the highest catch and the highest effectiveness value.
{"title":"Efektifitas Umpan Tiruan yang Berbeda Warna Terhadap Hasil Tangkap Ikan tongkol (Euthynnus sp) di Perairan Tenggara Karangsem Bali","authors":"I. Putra, I. Karang, Elok Faiqoh, A. R. As-syakur","doi":"10.24843/jmas.2020.v06.i02.p8","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p8","url":null,"abstract":"Catching Tuna Fish (Euthynnus sp.) in territorial waters of Southeast Karangasem, Antiga Kelod Village using trolling is very influenced by the type of baited. In a manner line, there are two type of baited that used for trolling, fishworm and lure. The objective of this research is to determine the effectiveness and the effect of lure on tuna fish catch (Euthynnus sp.) In territorial waters of Southeast Karangasem, Antiga Kelod Village. All of three baits are made about the size of the baits and have the same color, there are blue-white, red-white, and green-white, and it’s operated simultaneously on one unit trolling line for 12 times . This research using descriptive comparative analysis and complete randomized design statistic analysis (RAL). The results of this research obtain, the blue-wait color of the bait can produce 146 tuna fish (Euthynnus sp.) with an effectiveness value 34.27%, with average value of results catch is 12 tails on once trip. While for red-white color, produce 220 tuna fish with an effectiveness value 51.64%, and the average value of results catch is 18 tails on once trip, and the produce of green-white color is 60 tuna fish with effectiveness value 14.08%, the average outcome catch 5 tails on once trip. Based on the results of the research The red-white bait was a bait with the highest catch and the highest effectiveness value.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49632506","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 : 2020-12-03DOI: 10.24843/jmas.2020.v06.i02.p5
Anesa Ronavia, I. Restu, I. K. Wijanegara
Ngurah Rai Forest Park Bali is a mangrove forest area located along Benoa Bay. Tahura Ngurah Rai area was found in more than 10 types of mangroves, one of which was the caseolaris Sonneratia. This study aims to determine the potential and distribution of caseolaris Sonneratia based on soil type, and determine the type of substrate in the caseolaris Sonneratia distribution. The method is observational by sampling plots for tree stand categories and pole categories five station areas. Water parameters analyzed were temperature, dissolved oxygen, salinity, and pH. The soil parameters analyzed were soil pH, organic C, Nitrogen, Phosphorus, potassium, and water content. The results showed that the density of caseolaris Sonneratia trees at each station varied where the highest at station V (Nusa Dua) at 1,397 ind / ha and the lowest at station II (Suwung Kauh) with density of 177 ind / ha. Specific density values five stations fall into criteria. The type closure that entered the criteria of lack / damage is found at stations I, II, III, and IV, while for the category of very dense (good) at station V. The most pattern is the distribution pattern "clustered" (ind> 1). The range of physics-chemical parameters the waters in Tahura Ngurah Rai the highest temperature 30.33 oC and the lowest 28.36 oC , the highest salinity 25 ppm and the lowest 11 ppm, the highest dissolved oxygen 6.16 mg / L and the lowest 6.2 mg / L, the highest pH values are 8 and lowest 7.
{"title":"Potensi Dan Sebaran Jenis Pidada (Sonneratia caseolaris) Berdasarkan Jenis Tanah di Tahura Ngurah Rai - Bali","authors":"Anesa Ronavia, I. Restu, I. K. Wijanegara","doi":"10.24843/jmas.2020.v06.i02.p5","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p5","url":null,"abstract":"Ngurah Rai Forest Park Bali is a mangrove forest area located along Benoa Bay. Tahura Ngurah Rai area was found in more than 10 types of mangroves, one of which was the caseolaris Sonneratia. This study aims to determine the potential and distribution of caseolaris Sonneratia based on soil type, and determine the type of substrate in the caseolaris Sonneratia distribution. The method is observational by sampling plots for tree stand categories and pole categories five station areas. Water parameters analyzed were temperature, dissolved oxygen, salinity, and pH. The soil parameters analyzed were soil pH, organic C, Nitrogen, Phosphorus, potassium, and water content. The results showed that the density of caseolaris Sonneratia trees at each station varied where the highest at station V (Nusa Dua) at 1,397 ind / ha and the lowest at station II (Suwung Kauh) with density of 177 ind / ha. Specific density values five stations fall into criteria. The type closure that entered the criteria of lack / damage is found at stations I, II, III, and IV, while for the category of very dense (good) at station V. The most pattern is the distribution pattern \"clustered\" (ind> 1). The range of physics-chemical parameters the waters in Tahura Ngurah Rai the highest temperature 30.33 oC and the lowest 28.36 oC , the highest salinity 25 ppm and the lowest 11 ppm, the highest dissolved oxygen 6.16 mg / L and the lowest 6.2 mg / L, the highest pH values are 8 and lowest 7.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47909593","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 : 2020-12-03DOI: 10.24843/jmas.2020.v06.i02.p4
Desy Shintya Irene, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha
Hydrocarbon compounds are commonly found in petroleum and gas, plastics, paraffins, and bitumen. Although hydrocarbons are the constituent compounds of the materials used by humans, some hydrocarbon compounds have adverse effects on the environment and humans. One alternative to solve this problem is by using Mangrove substrate in Ngurah Rai Forest Park, Bali which is the habitat of several species of bacteria that interfere with degrading hydrocarbons. This study aims to identify the bacteria that interfere with hydroxon, through macroscopic observation, microscopic and biochemical tests. The results of this study showed six isolate bacteria that interfere with degrading hydrocarbon compounds. Six isolates were from the genus Alcaligenes of sandy mangroves, Pseudomonas and Bacillus genus from muddy mangrove soils, and two genera of bacteria from clay substrate namely Alcaligenes and Bacillus. The disturbing bacterial proposals underlying the highest hydrocarbon were found on clay with a value of 58.51% and the lowest on sandy substrates, with a discount value of 0%. The highest value on the clay substrate can cause the clay substrate to bind hydrocarbons, air, nutrients, and oxygen higher than sandy and muddy soils. The lowest value on sandy substrate can lead to low bacterial capability and it takes a long time for bacteria to degrade hydrocarbons.
{"title":"Identifikasi Bakteri yang Berpotensi Mendegradasi Hidrokarbon dari Substrat Mangrove dengan Tekstur Berpasir, Berlumpur, dan Tanah Liat","authors":"Desy Shintya Irene, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmas.2020.v06.i02.p4","DOIUrl":"https://doi.org/10.24843/jmas.2020.v06.i02.p4","url":null,"abstract":"Hydrocarbon compounds are commonly found in petroleum and gas, plastics, paraffins, and bitumen. Although hydrocarbons are the constituent compounds of the materials used by humans, some hydrocarbon compounds have adverse effects on the environment and humans. One alternative to solve this problem is by using Mangrove substrate in Ngurah Rai Forest Park, Bali which is the habitat of several species of bacteria that interfere with degrading hydrocarbons. This study aims to identify the bacteria that interfere with hydroxon, through macroscopic observation, microscopic and biochemical tests. The results of this study showed six isolate bacteria that interfere with degrading hydrocarbon compounds. Six isolates were from the genus Alcaligenes of sandy mangroves, Pseudomonas and Bacillus genus from muddy mangrove soils, and two genera of bacteria from clay substrate namely Alcaligenes and Bacillus. The disturbing bacterial proposals underlying the highest hydrocarbon were found on clay with a value of 58.51% and the lowest on sandy substrates, with a discount value of 0%. The highest value on the clay substrate can cause the clay substrate to bind hydrocarbons, air, nutrients, and oxygen higher than sandy and muddy soils. The lowest value on sandy substrate can lead to low bacterial capability and it takes a long time for bacteria to degrade hydrocarbons.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42249382","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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