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INDONESIA
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 251 Documents
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Keragaman Genetik Penyu Lekang (Lepidochelys olivacea) Dan Kaitannya Dengan Pola Arus Di Perairan Samudera Hindia Dan Perairan Tengah Indonesia Samsul Bahri; Hawis H. Madduppa; Agus S. Atmadipoera
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p10

Abstract

Indonesia is an important habitat for olive ridley (Lepidochelys olivacea) that it is necessary for sustainable management with respect to biological and ecological aspects as well as its environment. Genetic diversity and connectivity of L. olivacea can be calculated by using mitochondrial DNA analysis approach. The water circulation pattern are greatly affects to the distribution of L. olivacea that can be a transport medium for its migrations. This study aims to determined the genetic diversity of L. olivacea and its relation to water circulation across western and center of Indonesian waters. Samples of L. olivacea were collected in 6 locations across western and center of Indonesian waters from August 2015 to December 2016. The molecular analysis was conducted on control region gen based on 791-bp fragment. The water circulation analysis was performed through INDESO data and visualized by using Ferret software. Phylogenetic analysis showed that there are population connectivity of L. olivacea between western and central Indonesian waters. While population of L. olivacea in Kapoposang Island tend to be different compared to other populations. Genetic diversity analysis showed that L. olivacea from western Indonesia are more higher than center Indonesia. The water circulation analysis suggests that there is an established connection between western and center indonesian waters that connected by Northwest and Southeast seasons current, which the current vector indicates the movement of alternating water throughout Aceh, Pariaman, Panggul, Serangan, Kapoposang Island and Tuafanu populations.
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.
Regenerasi Jaringan pada Ikan Kerapu Cantang (Epinephelus fuscoguttatus lanceolatus) yang Terpapar Limbah Deterjen Melalui Perendaman Ekstrak Padina australis dengan Dosis Berbeda Farah Diba Sani; Marcelien Dj. Ratoe Oedjoe; Ade Yulita Hesti Lukas
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p15

Abstract

Padina australis has bioactive compounds as antimicrobials in the form of phenols and their derivatives (flavonoids) which can inhibit the growth of bacteria that interfere with the function of the cytoplasmic membrane and can prevent spoilage and damage by microorganisms. This research was conducted from October to November 2022 at the Faculty of Animal Husbandry, Maritime Affairs and Fisheries, Nusa Cendana University, Kupang. The purpose of this study was to determine how many doses of Padina australis were effective in treating skin, gill and liver tissue damage of cantang grouper (Epinephelus fuscoguttatus lanceolatus) exposed to detergent. The method used is an experiment with a completely randomized design (CRD) with 3 treatments and 3 replications. The treatments used were control without detergent and Padina australis, 0.25g/l detergent and treatment with Padina australis with doses of 0.5%, 1% and 1.5%. The fish used was grouper cantang (Epinephelus fuscoguttatus lanceolatus) with a size of 8-9 cm. Treatment was done by soaking the fish for 10 minutes with the extract for 3 consecutive days. The fish were then fixed with 95% alcohol solution for further histology. The results showed that the administration of Padina autralis effect on changes in the histology of the skin, gill, and liver of cantang grouper. Changes that occur in the skin in the form of degeneration of vacuoles, in the gill lamellae hemorrhage occurs and the liver undergoes vacuole degeneration and necrosis. The best dose is found in the 1.5% treatment but it has not been effective in treating liver tissue.
Deteksi Pola Sebaran Tumpahan Minyak (Oil Spill) Menggunakan Citra Sentinel-1A di Perairan Karawang Fernanda Nadia Damayanti; I Dewa Nyoman Nurweda Putra; I Wayan Nuarsa; Maryani Hartuti
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p06

Abstract

In recent years, oil spill accidents very often occur due to the development of sea transportation and oil exploitation. Increased exploitation of oil resources is a concern for oil spills that are very harmful to marine ecosystems. On July 12 2019, there was a well kick in the well reactivation YYA-1 owned by PT. Pertamina Hulu Energi work area Offshore North West Java (ONWJ) in Karawang Sea. The oil spill were spread up to Banten and continued to spread widely. Remote sensing is one of the methods that can be used to detect and monitor the oil spill by quickly viewing the location and spill points, and the pace and direction of the oil that can be utilized for cleaning. This research aims to determine the detection of oil spill using Sentinel-1A imagery and to determine oil spill patterns in Karawang Sea before spills occur until the well YYA-1 was closed that was on October 7 2019. This detection is done with adaptive threshold algorithm through Sentinel applications platform (SNAP). The results showed that oil spill has a trajectory spread pattern at the beginning of the spill which occur on July 18 2019. After July 18th, the spread pattern turned random and interrupted the spreading process. The spread has an estimated spread area of 145.85 km2. The spread of oil spill moved towards the northwest to the west approaching the coast and further away from the source of the spill, to Pandjang Island, Banten.
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.
Karakteristik dan Distribusi Spasial Bahan Organik Pada Sedimen Dasar Perairan Teluk Pacitan Jawa Timur Alindya Eka Puspita Dewi; Zainul Hidayah; Akhmad Farid; Dwi Budi Wiyanto
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p11

Abstract

Pacitan Bay is one of the semi-enclosed waters on East Java's south coast. This area is well-known for having a large fishing port as well as a beach tourism area. The dynamics of Pacitan Bay's waters due to the influence of currents, waves, and the input of water masses from the mainland are thought to affect the characteristics of the waters' bottom sediments. The objective of this study was to map the characteristics of bottom sediments and the distribution of organic substance. This research also analyzed the relationship between sediment characteristics and the concentration of organic subtance in the sediment. The sediment's characteristics were determined using granulometric analysis, and the organic matter content was determined using the Loss of Ignition (LOI) method. The analysis results show that sandy substrates dominate the bottom sediments of Pacitan Bay by an average of 82.22%. The distribution of sandy substrate dominates the bay's north and west. Distance from the shoreline has a significant effect on organic subtance distribution (One Way ANOVA, F = 6.05; p 0.05). The organic matter content of sediments dominated by sand is lower (R2 = 0.76) compared to substrates with softer grain size (silt or mud) and tighter pores, making organic matter efficient to precipitate.
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.
Identification of Dominant Shark Fins Landed at The Port of Benoa, Bali Based on CO1 Gene Yuni Debora Prasicilia Sitorus; Pande Gde Sasmita Julyantoro; Ayu Putu Wiweka Krisna Dewi
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p07

Abstract

Indonesia is one of the world's most shark-catching countries. One of the fishery ports that has a by-product of sharks is the Port of Benoa. The purpose of this study was to determine the species and phylogenetic relationship of sharks from dominant fin samples landed at the Port of Benoa, Bali based on the results of morphological identification and DNA barcoding techniques. The study was conducted from January to February 2018 at the Pengawasan Sumberdaya Kelautan dan Perikanan Base (PSDKP) Benoa. This research uses exploration method with survey technique. The data used in this research is primary data of dominant shark fin samples in research location area and secondary data of location where shark caught by fisherman based on PSDKP database. The results showed that by-catch sharks from dominant fin samples at the Port of Benoa, Bali based on morphological identification and DNA barcoding technique were Prionace glauca (Blue Shark) species. The results of phylogenetic analysis of by-catch shark species from dominant fin samples landed at the Port of Benoa, Bali have close relation with Carcharhinidae family. Prionace glauca shark species have an amplified nucleotide base length of 600 pb with similarity reaching 99 values with species present in GenBank.
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
Pemetaan Distribusi Lamun di Selat Ceningan Menggunakan Drone Komersial I Gede Andika Wijantara; I Wayan Gede Astawa Karang; Gede Surya Indrawan
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p12

Abstract

Remote sensing is growing with the drone which can overcome problems and weaknesses on satellite imagery. This research uses mapping techniques on seagrass to the species level using drones that use the high resolution to generate data. The purpose of this study was to determine the distribution species of seagrass in Ceningan Strait using drone. Data is collected at the date of 12 and 13 march 2020 by using 50 cm x 50 cm transect which is done by systematic random sampling, and images capture using drones phantom 3 standard by performing five flights, and the results will be combined into one form of a mosaic. The method used is the classification of GEOBIA (Geographic Object Based Image Analysis) which is validated with field data. From the results of the research conducted, three species were identified using drones, namely seagrass with the species Thalasia hemprichi, Cymodocea rotundata, and Syringodium isoetifolium. The results of the drone image classification showed that the variation in the area of cover of each species with the highest incidence was seagrass with Cymodocea rotundata (2.46 ha), followed by Thalasia hemprichi (1.02 ha), and Syringodium isoetifolium (0.26 ha). The results of the image classification show a fairly good level of accuracy with an accuracy value of 68% and the kappa coefficient with a value of 0.55. From the results obtained, it was concluded that the mapping of seagrass species using drones was categorized as quite good.

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