Journal of Marine Research and Technology最新文献

Kandungan Mikroplastik Pada Gastropoda di Kawasan Tahura Ngurah Rai, Bali 巴厘岛努拉莱公园腹足类动物体内的微塑料含量

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p05

Gulielmus Nanda Iobel Arijuato, I. Hendrawan, I. P. Y. Darmendra

{"title":"Kandungan Mikroplastik Pada Gastropoda di Kawasan Tahura Ngurah Rai, Bali","authors":"Gulielmus Nanda Iobel Arijuato, I. Hendrawan, I. P. Y. Darmendra","doi":"10.24843/jmrt.2023.v06.i02.p05","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p05","url":null,"abstract":"The mangrove ecosystem can be affected by the dangers of microplastics, indicated by various associated biota that lives in it, one of them being gastropods. This study aimed to determine microplastics’ content in gastropod body mangrove sediments at Tahura Ngurah Rai, Bali using gastropods as bioindicators. This research was conducted from May to June 2022, using in situ and ex situ methods. In situ, data were conducted at Tahura Ngurah Rai, Bali, as the sampling location, and ex situ data were conducted at Udayana University’s marine science laboratory by sample processing. The data taken includes the characteristics of microplastics, including the type, size, color, and abundance of microplastics in gastropods at the sampling station. Results showed that 5 families of gastropods (Ellobiidae, Littorinidae, Muricidae, Neritidae, and Potamididae) were contaminated with microplastics, with the highest abundance found in Potamididae, with the number 4,06 ± 2,19 particles/individual. The types of microplastics obtained were fragments, fibers, and films dominated by fibers collected 210 particles. The color of the microplastics varies and dominated with black colored microplastics was found 78 particles, and the size of microplastics is dominated by < 1 mm particles with several 145 particles. The highest abundance of microplastics was found on site 12 with the number 5,67 ± 4,04 particles/individual.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"181 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348777","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}

引用次数: 0

Penilaian Kondisi Komunitas Mangrove di Kawasan Hutan Mangrove Ciletuh, Sukabumi, Jawa Barat 西爪哇苏卡布米 Ciletuh 红树林区红树林群落状况评估

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p07

Muhammad Imran Zaelani, I. W. Arthana, G. Indrawan

{"title":"Penilaian Kondisi Komunitas Mangrove di Kawasan Hutan Mangrove Ciletuh, Sukabumi, Jawa Barat","authors":"Muhammad Imran Zaelani, I. W. Arthana, G. Indrawan","doi":"10.24843/jmrt.2023.v06.i02.p07","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p07","url":null,"abstract":"This study aimed to analyze the composition of mangrove vegetation, the Important Value Index (IVI) of mangroves, the condition of the mangrove community (mangrove density and mangrove canopy cover), and environmental parameters as supporting data in the Ciletuh Mangrove Forest Area, Sukabumi, West Java. The research method used in this research is a quantitative descriptive method. The number of stations determined is four; each observation station is made of a plot of 10 x 10 meters, with three plots for each station. The results found seven mangrove species, namely Avicennia marina, Bruguierra cylindrica, Rhizophora apiculata, Rhizophora mucronata, Aegiceras corniculatum, Hibiscus tiliaceus, and Nypa fruticans. The mangrove species found were dominated by A. marina, where this species was found at all stations and had the highest Important Value Index (IVI) value among other species, ranging from 88.96 - 195.55%. Mangrove communities in the Ciletuh Mangrove Forest Area are in good condition referring to the Decree of the Minister of Environment No. 201 of 2004 concerning Standard Criteria and Guidelines for Mangrove Damage with density values ranging from 1533 – 2933 stands/ha and the percentage of mangrove canopy cover ranging from 80.54 - 82.22%.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348741","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}

引用次数: 0

Studi Potensi Tsunami Bali Utara Menggunakan Metode Numerik 利用数值方法研究北巴厘岛海啸潜势

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p02

Idam Bali Haryono, I. Hendrawan, G. Indrawan

{"title":"Studi Potensi Tsunami Bali Utara Menggunakan Metode Numerik","authors":"Idam Bali Haryono, I. Hendrawan, G. Indrawan","doi":"10.24843/jmrt.2023.v06.i02.p02","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p02","url":null,"abstract":"Bali Island is one of the most tsunami-prone areas in Indonesia. Two tectonic tsunami sources flank Bali Island: The Megathurst subduction zone in the south and the Back Arc Thurst subduction zone in the north. This study aimed to add information about the tsunami arrival time and the maximum height of the tsunami waves that hit the coast using COMCOT software as a disaster mitigation measure. Five scenarios were used in this study with the differences in the magnitude of tsunami-generating earthquakes. Results showed that the fastest affected shoreline by the tsunami in scenarios 1, 2, and 3 is the Tejakula Sub District shoreline, with a period of 5 minutes 41 seconds to 3 minutes 43 seconds. In scenarios 4 and 5, it was found on the Sawan Sub District shoreline for 2 minutes, 51 seconds to 56 seconds. The maximum run-up of tsunami waves that hit the shoreline in scenarios 1, 2, 3, and 4 are on the Kubu Sub District shoreline with run-up heights of 0.0095 m, 0.47 m, 1.5 m, and 3 m. In scenario 5, the highest run-up is on the Banjar Sub District shoreline, with a 67.6 m run-up height. Based on the results of this study, it can be concluded that the magnitude of the tsunami-generating earthquake greatly influences the travel time and run-up height of the tsunami waves. The greater the magnitude of the tsunami-generating earthquake, the faster the travel time of the tsunami waves and the higher the run-up height.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348785","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}

引用次数: 0

Frekuensi Pemunculan, Tingkah laku, dan Diversitas Cetacea di Perairan sekitar Labuan Bajo, Flores, Nusa Tenggara Timur 东努沙登加拉 Flores 岛 Labuan Bajo 附近水域鲸目动物的出现频率、行为和多样性

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p08

Priscilla Princessa Amalo, I. N. W. Putra, I. N. W. Putra

{"title":"Frekuensi Pemunculan, Tingkah laku, dan Diversitas Cetacea di Perairan sekitar Labuan Bajo, Flores, Nusa Tenggara Timur","authors":"Priscilla Princessa Amalo, I. N. W. Putra, I. N. W. Putra","doi":"10.24843/jmrt.2023.v06.i02.p08","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p08","url":null,"abstract":"At least 30 cetaceans live in Indonesia, especially in the eastern waters of Indonesia, consisting of whales and dolphins. Cetaceans play an important role as a key species in determining the health of marine ecosystems. This study aims to determine the frequency of appearance, behavior, and diversity of cetaceans along Labuan Bajo, Flores, and East Nusa Tenggara. The study was conducted in October-November 2021, with four weeks to collect field data and interviews. The data involved a ship carrying a group of observers consisting of four people, with each task assigned to look for the appearance, species, and behavior of cetaceans. In the interview methods, interviews were conducted with fishermen regarding the presence of cetaceans. The data was then processed using the Microsoft Excel program and later plotted using the ArcView program as the outpour of the cetacean distribution. The results showed 19 occurrences of cetaceans, with six occurrences found in the field survey and 13 based on interviews with fishermen. Appearances were found to be evenly distributed in the study area, with a total of 7 species of cetaceans found, namely Stenella longirostris, Stenella attenuata, Tursiops truncates, Pseudorca crassidens, Grampus griseus, Kogia simus, and Physeter macrocephalus. In species composition and abundance, S. longirostris species had the highest value, and the P. crassidens species had the lowest composition value. A value of 1.06 was found in diversity, indicating that the cetaceans in Labuan Bajo were classified as moderate. Some behaviors include aerials, spy hopping, bow-riding, feeding, and avoidance.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348714","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}

引用次数: 0

Keanekaragaman Iktiofauna Ekosistem Estuari Taman Hutan Raya Ngurah Rai, Bali 巴厘岛努拉莱大森林公园河口生态系统的浮游动物多样性

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p01

Gabrielle Aisya, Nyoman Dati Pertami, I. N. Giri Putra

{"title":"Keanekaragaman Iktiofauna Ekosistem Estuari Taman Hutan Raya Ngurah Rai, Bali","authors":"Gabrielle Aisya, Nyoman Dati Pertami, I. N. Giri Putra","doi":"10.24843/jmrt.2023.v06.i02.p01","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p01","url":null,"abstract":"The diversity of ichthyofauna is an important aspect that can be used to presume the aquatic environmental conditions. Therefore, this study aims to determine the diversity of ichthyofauna in Taman Hutan Raya (TAHURA) Ngurah Rai, Bali during the eastern season and transitional II season. The sample was collected from July 2022 – October 2022 using an experimental gill net. During the sampling period of this study, 413 fishes were caught, representing 18 different species from 17 genera, 14 families, and 12 orders. Based on the results of the analysis, the highest diversity value was found in the waters of Jimbaran, then the waters of Kampung Kepiting, while Serangan waters has the lowest diversity value (H’<1). The lowest uniformity index was found in the waters of Serangan because it is dominated by only one fish species, namely Ambassis macracanthus (Seriding Fish), while in the waters of Kampung Kepiting and Jimbaran, the uniformity is quite even. The highest dominance index was found in the waters of Serangan, while other water areas has no dominating species. The species composition found at all stations varied considerably, but the results of the IUCN status showed that most of the fishes were still in the category of data deficient and not evaluated. The highest abundance was found in the waters of Serangan. The water quality parameters of TAHURA Ngurah Rai showed that not all aspects are in accordance with quality standards for marine life.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348639","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}

引用次数: 0

Pemetaan Zona Potensial Penangkapan Ikan (ZPPI) Di Perairan Selat Bali Menggunakan Citra Satelit Aqua MODIS 利用 Aqua MODIS 卫星图像绘制巴厘海峡水域捕鱼潜力区 (ZPPI) 图

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p06

Nining Dwi Lestari, I. N. W. Putra, Ni Luh Putu Ria Puspitha

{"title":"Pemetaan Zona Potensial Penangkapan Ikan (ZPPI) Di Perairan Selat Bali Menggunakan Citra Satelit Aqua MODIS","authors":"Nining Dwi Lestari, I. N. W. Putra, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmrt.2023.v06.i02.p06","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p06","url":null,"abstract":"The abundance and distribution of fish are influenced by environmental productivity, such as chlorophyll-a distribution and variations in sea surface temperature (SST). The lack of technology fishermen use in the waters of the Bali Strait has resulted in the high potential of fish resources not being optimally utilized. This study aimed to determine potential fishing zones by utilizing Aqua MODIS satellite data which can detect SST and chlorophyll-a. The image data observed was from October to December 2018 to 2020. The method used is the Single Image Edge Detection Algorithm, where this algorithm is used to determine potential fishing areas designed to detect fronts in SST images. The results showed that in December 2018, 7 potential fishing points were produced, marked with a chlorophyll-a value of 0.25 mg/m3 and an SST of 29.25°C. In December 2020, 82 potential fishing points were produced, with a chlorophyll-a value of 0.31 mg/m3 and an SPL of 29.79°C. Validation was carried out by analyzing the result of image processing with fish catch data obtained from Pengambengan PPN, Muncar PPP, and Kedonganan TPI. SST, with a value of 27°C, is the ideal temperature for fish where when the temperature increases, the number of potential fish catch points decreases and vice versa. The distribution of chlorophyll-a content with a value of > 0.2 mg/m3 affects the number of potential fishing points, where the higher the chlorophyll-a content, the more fishing ground points and vice versa.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348651","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}

引用次数: 0

Aplikasi Penginderaan Jauh Citra Landsat-8 Untuk Pembuatan Peta Batimetri Di Perairan Pantai Jumpai, Klungkung, Bali 应用 Landsat-8 遥感图像绘制巴厘岛克伦贡 Jumpai 海滩水深图

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p09

Ida Ayu Made Inten Melinia, I. D. N. Nurweda, I. G. N. Putra Dirgayusa

{"title":"Aplikasi Penginderaan Jauh Citra Landsat-8 Untuk Pembuatan Peta Batimetri Di Perairan Pantai Jumpai, Klungkung, Bali","authors":"Ida Ayu Made Inten Melinia, I. D. N. Nurweda, I. G. N. Putra Dirgayusa","doi":"10.24843/jmrt.2023.v06.i02.p09","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p09","url":null,"abstract":"Klungkung Regency is the smallest regency in the province of Bali, Indonesia. The waters of Jumpai Beach are one of the areas in Klungkung, which is one area that is used by the surrounding population for fishing activities for fishermen to obtain fishery products. Remote sensing technology has been applied because of its effectiveness and the significance of its use in compiling and revising resource maps. It is also helpful to support resource planning and management. A bathymetry map is a map that describes the depth of the sea and is presented using contour lines. Contour lines are abstract lines connecting several locations or areas with the same height or depth. Remote sensing techniques are available to determine the ocean’s depth because the air has signals from the very bottom of the ocean with strong solid wavelengths. However, the penetration of electromagnetic energy is limited. Therefore, remote sensing techniques are adopted to infer water depth and shallowness. One of the satellites that can be used for bathymetry mapping is Landsat-8. Landsat imagery has a spatial resolution of 30 meters, complemented by the visible channels required to extract bathymetric maps. Accurate estimation of shallow water area bathymetry for the safety of small boat navigation such as fishing and for benthic studies. Remote sensing technology can be considered one of the most desirable alternative tools for bathymetry development.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348764","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}

引用次数: 0

Studi Laju Sedimentasi di Muara Sungai Perancak Menggunakan Pemodelan Numerik 利用数值模型研究佩兰卡克河口的沉积速率

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p11

Pandu Pratama Putra, I. W. Arthana, I. Hendrawan

引用次数: 0

Kajian Karakteristik Gelombang Laut di Wilayah Pantai Pulau Merah, Kabupaten Banyuwangi 班佑万吉县红岛海滩地区波浪特征研究

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p03

Anggareta Khairunnisa, Aries Kristianto

引用次数: 0

Indeks Kesesuaian Wisata Di Pantai Pemuteran Buleleng, Bali 巴厘岛 Buleleng 的 Pemuteran 海滩旅游适宜度指数

Journal of Marine Research and Technology Pub Date : 2023-08-28 DOI: 10.24843/jmrt.2023.v06.i02.p04

I. K. A. W. A. Maha Putra, I. G. N. Dirgayusa, I. Dharma

{"title":"Indeks Kesesuaian Wisata Di Pantai Pemuteran Buleleng, Bali","authors":"I. K. A. W. A. Maha Putra, I. G. N. Dirgayusa, I. Dharma","doi":"10.24843/jmrt.2023.v06.i02.p04","DOIUrl":"https://doi.org/10.24843/jmrt.2023.v06.i02.p04","url":null,"abstract":"Marine ecotourism is one way of developing tourism in coastal areas that pays attention to ecology and maintains environmental stability. This study was conducted to determine the value of the Tourism Suitability Index (IKW) at Pemuteran Beach, Grokgak, Buleleng by considering 10 parameters such as water depth, beach type, beach width, water base material, water current velocity, beach slope, water brightness, coastal land cover, hazardous biota, and freshwater availability. The method of determining the location using the purposive sampling method is by taking an intentional and determined sample so that what you want to study can be represented by the number of stations, as many as 4 station points. The IKW analysis in this study refers to the suitability classification of coastal tourism and the tourism suitability matrix. Based on the results of the IKW analysis at Pemuteran Beach, each station, namely Station I has a value of 77%, station II is 79%, station III is 83%, and Station IV is 82%. It has the type and basic material of the beach with a black sand substrate with a mixture of coral fragments with a depth of 1.55-1.7 m; including shallow waters, the average width of the beach is quite wide, which is 11.5 m. In addition to this, Pemuteran Beach has a coastal slope of less than 10o with an average current speed of 0.27 m/s and has 100% water clarity. Coastal land cover is generally in the form of resident settlements.","PeriodicalId":300790,"journal":{"name":"Journal of Marine Research and Technology","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139348706","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}

引用次数: 0