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Journal of Marine and Aquatic Sciences
Published by Universitas Udayana
ISSN : 23028114     EISSN : 25497103     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Journal of Marine and Aquatic Sciences (JMAS) adalah peer-reviewed, open access journal, diterbitkan oleh fakultas Kelautan dan Perikanan, Universitas Udayana. JMAS menerbitkan hasil peneitian original dan review artikel dalam bidang ilmu kelautan, manajemen sumberdaya perairan, dan aplikasi remote sensing di bidang kelautan dan perikanan.
Arjuna Subject : -
Articles 18 Documents
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Search results for , issue "Vol 8 No 1 (2022)" : 18 Documents clear
Analisis Sea Level Anomaly Dengan Menggunakan Data Multi Satelit Altimetri Di Perairan Indonesia I Gusti Putu Ary Wedangga; I Gusti Bagus Sila Dharma; I Dewa Nyoman Nurweda Putra
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p14

Abstract

Global warming become one of the problems currently faced by the world. In general, global warming is a phenomenon where the average temperature of the earth has increased, both the temperature of land, atmosphere, and sea. As a result, global warming can cause global climate change, and sea level rise. Sea level rise is a condition where the increasing of sea water volume that caused by melting of the ice caps or thermal expansion. This study used Sea Level Anomaly (SLA) dan Sea Surface Temperature (SST) data with 1/4° x 1/4° spatial resolution and daily temporal resolution for 10 years (2008 - 2018). The study was conducted in Indonesian waters within coordinates of 10°N – 13°S dan 93°E – 141°E, with 8 areas focused on analyzing sea level anomaly trends. During the period 2008 - 2018 there was a positive trend of sea level anomaly at all research area. The highest sea level rise occurred in area B (Sulawesi Sea) of 4.788 cm with a rate of increase of 0.479 cm / year. In general there was an average increase of 3.686 cm in Indonesian waters with a rate of increase of 0.369 cm / year.
Pemetaan Tingkat Kerawanan Bencana Tsunami di Pesisir Barat Daya Provinsi Banten Elizabeth Anastasya; I Dewa Nyoman Nurweda Putra; IGB Sila Dharma
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p10

Abstract

Indonesia is one of the countries that has a high level of natural disasters in the world because of Indonesia's location and geographical position in the rings of fire. One of the most vulnerable disasters in Indonesia is earthquakes, volcanic eruptions to tsunami waves (Mukhtasor , 2007). Based on data from the BNPB on December 22 2018, there was a tsunami disaster in the southwest coast of Banten to the coast of Lampung caused by the eruption of Mount Anak Krakatau. The purpose of this study are to create tsunami hazard map on the southwest coast of Banten Province by using a Geographic Information System (GIS) and then identify which areas are in a very vulnerable class. This research was conducted in February 2020 until May 2020. The analytical method used was descriptive analysis, map overlay analysis, and qualitative analysis. The stages include the preparation of maps and supporting data using the help of Global Mapper 8.0 software, the determination of influential parameters, analysis of tsunami prone areas based on the parameters that affect, and determination of tsunami prone areas. The process of determining tsunami-prone areas is done through a process of weighting and scoring of influential parameters, then overlapping with the help of ArcGis 10.7 software to get a map of the level of tsunami hazard. The factors in this study that affect tsunami hazard are land height, land protection, distance from the tsunami source, coastline shape, and the presence of barrier islands. The total area classified as very vulnerable is around 19,94 km2 on the southwest coast of Banten Province. This indicates the need for disaster management through crisis management and risk management based on more valid research.
Pemetaan Perubahan Penggunaan Lahan Wilayah Pesisir di Kecamatan Bulak, Surabaya Tahun 2014 dan 2020 Maria Laurensyelen Wulu Beda Rianghepat; I Wayan Nuarsa; Ida Bagus Mandhara Brasika
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p15

Abstract

The coastal area is an intersection between mainland and ocean. The tourism potential in the coastal area of Bulak District in Surabaya is expanded. It is shown by the construction of Surabaya Bridge in 2015. This construction will affect land use change. Remote sensing technology is one of the acquisitions to monitor land use change. This research focuses on identifying the land use change in the coastal area in Bulak District, Surabaya, in 2014 and 2020, as well as to determine the accuracy of classification method applied for mapping the land use change in 2020. The application of 2014 acquisitions data was used as the bridge construction plan, while the application of 2020 acquisitions data was used as the premise for the land classification system in the previous year. There are two methods used to classify land use in coastal areas, that is pixel-based classification (maximum likelihood algorithm) and object-based classification (nearest neighbor algorithm). The research shows that there are 6 land use classes in study area: built-up land, rice fields, forests, shrubs, non-built-up land, and ocean. By applying these two methods, the result shows different area changes. The conversion of the highest mainland by applying a pixel-based classification was found in built-up land (+23.03 ha) and rice fields (-24.84 ha), while the area changes by applying object-based classification method were found in built-up land (+32.75 ha) and rice fields (-26.91 ha), respectively. The accuracy by applying the pixel and object-based method is 89% and 92%, respectively, from the percentage indicates good interpretation.
Indeks Kesesuaian Wisata Di Pantai Dolok Oan, Cristo Rei, Dili, Timor Leste Jenisia Barros Soares; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p11

Abstract

East Timor is a country located in the northern continent with an area of 14.874 km². East Timor has a lot of natural resources, one of which is the beach located in Est Timor in the capital city of Dili, located in Cristo Rei area Dolok Oan beach. Dolok Oan beach is a white sand beach that has the sand characteristics, sea water so it is suitable for recreation but has not utilized optimally. Therefore the purpose of this study is to determine the suitability index of tourism on the beach and to identify the limiting factors of the suitability index of tourism in the Dolok Oan coast region. A tourism suitability index (TSI) study was carried out at Dolok Oan beach, Cristo Rei, Dili, Timor - Leste, in January 2019. Pusposive sampling is used as a method for data collection. The dat collected are included: coastal type, beach width, water depth, coastal slope, water base material, water flow, velocity, waters brightness, coastal clousure, harmful biota, and freshwater availability. The analysis of IKW for recreation beach category refers to the matrix of tourism and tourism conformity classification. The limiting factor of IKW in Dolok Oan Beach is coastal land cover and wide beach. IKW value for tourism activities in the beach recreation category at Dolok Oan Beach value of 93,58% are category as suitable (S1). At Dolok Oan beach
Studi Laboratorium Bangunan Pantai Untuk Mereduksi Gelombang Tsunami Kasus Palu, Sulawesi Tengah Yolla Jessika; IGB Sila Dharma; I Gusti Ngurah Dirgayusa; Adi Prasetyo
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p16

Abstract

Indonesia ranked second as the country most frequently hit by tsunamis, earthquakes large and small often occur in Indonesia. The earthquake in Palu-Donggala, Central Sulawesi in 2018 with a magnitude of 7.4 had generated a tsunami as high as 3-5 m, and the epicenter was in the north of the bay which resulted in the death toll and the destruction of infrastructure. In minimizing losses and casualties, structural disaster mitigation in the form of coastal buildings consisting of mangroves and vegetation as natural protection and sea walls as coastal reinforcement can be the right step to anticipate the vulnerability of the Palu Bay area. This study aimed to analyzed the level of attenuation in coastal structures and determine the best alternative for tsunami disaster mitigation planning. The test was carried out with a physical model using (wave flume) at the Balai Pantai Laboratory with a total of 48 times of testing with variations of three wave generation targets (0.07 m, 0.09 m, and 0.11 m), depth (0.40 m, 0.414). m, and 0.428 m) and the width of the vegetation (0.40 m, 0.70 m, and 1 m) which are divided into 24 scenarios. The results of the physical model test showed that the presence of coastal structures has a significant effect on the characteristics of the transmission waves, and the speed. The existence of mangrove forests and vegetation has succeeded in reducing wave transmission by 20-100%, also being able to reduce wave speed up to 100% significantly in the relative water level (Mean Water Level), reducing up to 87% at average elevation (Sea Water Level) ), and reduce up to 22% at the highest tide state (High Water Level).
Deteksi Kapal Penangkapan Ikan Menggunakan data Visible Infrared Imaging Radiometer Suite (VIIRS) dan data Vessel Monitoring System (VMS) di Wilayah Pengelolaan Perikanan Negara Republik Indonesia Dominggus Samuel Helberth Lothar Matheus Koreri Awak; Jonson Lumban-Gaol; Dony Kushardono
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p12

Abstract

Perikanan pelagis kecil merupakan salah satu sumber daya ikan yang penting terhadap perekonomian Indonesia. Salah satu permasalahan yang dihadapi saat ini adalah masalah overfishing, seiring dengan kemajuan teknologi penangkapan ikan yang mengakibatkan aktivitas penangkapan yang melebihi tingkat penangkapan ikan lestari serta tidak diimbangi dengan pengelolaan yang baik. Penelitian ini bertujuan menganalisis distribusi kapal penangkapan ikan secara terintegrasi dari data vessel boat detection VIIRS dan data VMS di wilayah pengelolaan perikanan Indonesia. Dalam rangka mendukung upaya pengelolaan maka kajian mengenai distribusi kapal yang aktual beroperasi di perairan Indonesia perlu diketahui secara pasti. Saat ini pemantauan distribusi kapal ikan di perairan Indonesia dilakukan dengan menggunakan vessel monitoring system. Selain dari VMS pendeteksian kapal ikan dapat dilakukan dengan memanfaatkan data penginderaan jauh baik dari sensor aktif maupun pasif yaitu melalui satelit Suomi National Polar-orbiting Partnership yang memiliki visible infrared imaging radimeter suite. Instrumen ini memiliki day/night band yang mampu merekam cahaya lampu di permukaan bumi termasuk kapal-kapal ikan yang menggunakan cahaya lampu sebagai alat bantu tangkap. Metode deteksi kapal ikan menggunakan kombinasi data VBD dari citra satelit VIIRS dan data VMS kapal ikan. Berdasarkan kecocokkan sebesar 26.04% dan berdasarkan kombinasi data VIIRS dan VMS diketahui bahwa daerah dengan distribusi kapal terbanyak di WPP-712
Kompossisi komunitas bakteri yang berasosiasi dengan acropora hyacinthus Trisilia Mulyawati Anggraeni; I Gusti Ngurah Putra Dirgayusa; Widiastuti Widiastuti
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p17

Abstract

Hard coral is the main constituent of the coral reef ecosystem and functions as shelter, nursery, and feeding ground for various marine macro- and microbiotas, such as bacteria in its mucus. Coral as the host may benefit from this partnership or receives detrimental effects since bacteria may turn into parasitic or pathogenic. Coral A. hyacinthus can be transplanted for ornamental coral. However, it is vulnerable to be infected by coral disease due to pathogenic bacteria if the water quality is poor. Therefore, this study was aimed to determined the community composition of bacteria associated with coral A. hyacinthus mucus. Corals A. hyacinthus were collected from the traditional coral transplantation in Patas village, Gerogak District, Buleleng Regency. Mucus were sampled from ± 5 cm fragment from 3 different coral colonies. Isolates were cultured in the Nutrient Agar medium. The identification of bacteria isolates was according to Biochemical Tests for Identification of Medical Bacteria 2nd edition. The identification of the isolates consisted of morphological and biochemical tests. The identification results found 10 isolates that consisted of Micrococcus sp. Pseudomonas sp., Flavobacterium sp. and Vibrio sp. However, the composition varied among the coral colonies.
Molecular Identification of Silver-Barb (Barbonymus sp.) Based on COI and Cyt-b gene region from East Java Mutiara Rahmawati; Akhmad Taufiq Mukti; Sapto Andriyono
Journal of Marine and Aquatic Sciences Vol 8 No 1 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i01.p13

Abstract

This study aims to determine the genetic character of cyprinid fish (Barbonymus sp.) using the mtDNA gene in the COI and Cyt-b gene regions. Samples were collected from the various areas in East Java Province, including Gresik, Mojokerto, Madiun, Malang, and Banyuwangi. The caudal peduncle of the cyprinid fish was used for molecular identification. Isolation and purification of its genomic DNA using the gSYNCTM DNA Extraction kit. We used a polymerase chain reaction machine for template DNA amplification with COI primers, including FishF1 and FishR1, while Cyt-b primers, including GluDG-L and CB2-H. The results showed that all cyprinid fish sequences were successfully amplified with the COI gene of 648 bp and the Cyt b gene of 408 bp. The results of the BLASTN analysis show that there are two species of cyprinid fish that have been found, namely Barbonymus gonionotus and Barbonymus schwanenfeldii, with percentage identities ranging from 99-100%. The species Barbonymus gonionotus was found in five regions (Gresik, Mojokerto, Madiun, Malang, and Banyuwangi), while Barbonymus schwanenfeldii was only found in Malang. The genetic distance value based on the COI gene ranged from 0.00000-0.10694, while the genetic distance value based on the Cyt-b gene ranged from 0.00000-1.15662. Conservation status based on IUCN Red List data, the species Barbonymus gonionotus and Barbonymus schwanenfeldii are included in the Least Concern (LC) category, and these species, according to CITES data, have not been evaluated or Not Evaluated.

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