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All Journal Jurnal Ilmiah Elektronik Infrastruktur Teknik Sipil Jurnal Ilmiah Teknik Sipil Journal of Marine and Aquatic Sciences Omni-Akuatika Journal of Marine Research and Technology TRITON : Jurnal Manajemen Sumberdaya Perairan Ulil Albab
I Gusti Ngurah Putra Dirgayusa
Program Studi Ilmu Kelautan, Fakultas Kelautan Dan Perikanan, Universitas Udayana, Kabupaten Badung, Bali - Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Social Sciences

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Strategi Prioritas Pengembangan Wisata Rumput Laut Berbasis Desa Adat di Pantai Geger, Kelurahan Benoa, Badung, Bali I Putu Aditya Budi Wacika; I Gusti Ngurah Putra Dirgayusa; Gede Surya Indrawan
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.p18

Abstract

Community-based tourism management can be used as a reference in tourism development because it provides great opportunities for local communities in all of processes, especially planning, management, monitoring and evaluation. The purpose of this study was to determined the internal and external potential of Geger Beach and to develop strategies for developing seaweed tourism based on traditional villages. Data collection methods consisted of observation, interviews, questionnaires, and literature study. The analysis used in this study were descriptive qualitative analysis and SWOT analysis. Based on the study results, the main strengths of the development of seaweed tourism in Geger Beach is the existence of cooperatives that’s integrated by traditional villages and the main weakness is the supporting facilities still need to be improved. The highest opportunity is the involvement of local communities and the biggest threat is pollution of the aquatic environment due to hotel waste. The priority strategies for developing seaweed tourism in Geger Beach are to raise the role of the pecalang segara immediately in controlling the security and guarding system of Geger Beach, collaboration between the government and traditional villages in implementing policies and regulations that have been made, increasing the role of traditional villages which include local community participation, creates seaweed tourism with its own characteristics from the Peminge Traditional Village, and also creates a master plan to support the successful development of seaweed tourism.
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
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.
Analisis Hubungan Nilai Tukar Nelayan Dengan Jenis Tangkapan Nelayan Di Desa Pengambengan, Kecamatan Negara, Kabupaten Jembrana, Bali Ida Bagus Ketut Ravidhya Krisna Sekar; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
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.p18

Abstract

This research aims to determine the fishermen’s exchange rate (NTN) and how the catch composition could affect the income of purse sein fishermen in Pengambengan Village. The object of the research is purse sein fishermen in Pengambengan Village, sampling has carried out by using purposive technique, and data was collected using questionnaires and interviews. The method used in this research are the NTN calculation method and multiple linear regression statistical method with hypothesis test, T-tets, F-test, and the coefficient of determination (adjusted R2 Square). The results show in the harvest season, almost all of the fishermen experienced a surplus (NTN above 100), while in the famine season only fishermen with high profit-sharing system experienced a surplus and the other experienced a disadvantage. For both of the two seasons, the fishermen’s catch composition are consist of lemuru, tongkol and layang; base on the T-test results, lemuru catch affect significantly on fishermen’s income during the harvest season, and layang catch affect the income of fishermen in the famine season. somultaneously the catch composition, lemuru, tongkol and layang affect fishermen income compared only 1 type of fish catch, and seen from the Coefficient of Determination by 6,6 % in the harvest and by 7,5 % in the famine season. The fishermen’s income is also influenced by other variables which are not included. in the model.
Struktur Komunitas Karang Lunak Pada Kedalaman Berbeda di Teluk Jemeluk Amed, Kabupaten Karangasem, Bali Putu Adi Prawira; Dwi Budi Wiyanto; I Gusti Ngurah Putra Dirgayusa
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.p16

Abstract

Reef is ecosystem in tropical waters which rich of biota constituent, with high species diversity. One of biota that compiler coral reefs are soft corals (Octocorallia, Alcyionacea). The aim of this research is to know the soft coral community structure at different depths and the influence of the limiting factors of soft corals. Soft coral data retrieval is done in 3 observation points. Each depth research carried out by installing 6 transects quadrants through 100 meter transect line parallel to the shoreline. Data retrieval of water quality carried out on site research and laboratory testing. The water quality data taken include; temperature, brightness, salinity, pH, flow velocity, DO, depth, nitrate and phosphate. Retrieving data using the soft coral community structure. The highest density values found in every station a depth of 5 meters and the lowest at each station a depth of 15 meters. According to Odum (1971), the value of diversity in the research area included in the high category of H' ? 3.0, as well as to the value of uniformity in the high category at stations 1 and 3 on each depth of H ? 0.6 and at station 2 for each depth in the low category of E ? 0.4. According to Odum (1971), the value of dominance classified in the high category of 0.75 to 1.00, which means that there are species that dominate that Sinularia flexibillis except at a depth of 15 meters which is rated as moderate dominance. The observation of the condition of the community structure is still relatively good, as the limiting factor in the study area is very suitable for soft corals.
Profil Indeks Kesesuaian Wisata di Pantai Semawang, Kelurahan Sanur, Denpasar Berbasis Zonasi Pemanfaatan Kawasan Ida Bagus Putu Adi Gita Saputra; I Gusti Ngurah Putra Dirgayusa; Gede Surya Indrawan
Journal of Marine Research and Technology Vol 6 No 1 (2023): FEBRUARI 2023
Publisher : Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMRT.2023.v06.i01.p05

Abstract

The tourism suitability index (IKW) research conducted at Semawang Beach, Sanur Village, Denpasar, aimed to determine the limiting factors, the value of the tourism suitability index, and the zone of the utilization of the coastal tourism area for the recreation category. The method used is observation and survey in the field by purposive sampling at 4 station points, divided into a beach length of 710 m, and tourist interviews with as many as 50 respondents. The data include beach type, water depth, beach width, water base material, water current velocity, coastal slope, water clarity, coastal land cover, hazardous biota, and freshwater availability. The analysis of the tourism suitability index (IKW) refers to the tourism suitability matrix and the classification of the suitability of beach tourism in the recreation category. The limiting factor of the tourism suitability in Semawang Beach is the closure of coastal land. The value of the tourism suitability index (IKW) for beach tourism activities in the recreational category at Semawang Beach at the station I was 96.43%, station II was 90.48%, station III was 96.43%, and station IV was 94.04%. All stations are categorized as suitable (SS) for beach tourism activities. The used zone for coastal tourism areas for swimming, sunbathing, sports, and sightseeing can be carried out at all stations. The sacred zone is at Station II, adjacent to the entrance to the beach
Pemodelan Kekuatan Gelombang di Pesisir Barat Kecamatan Kuta, Bali Timothy Kenoly; I Gede Hendrawan; I Gusti Ngurah Putra Dirgayusa
Journal of Marine Research and Technology Vol 6 No 1 (2023): FEBRUARI 2023
Publisher : Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMRT.2023.v06.i01.p06

Abstract

The coastal area is an important area with many different functions for both human and marine organisms. Still, coastal regions are vulnerable to changes caused by various things, including waves. Waves can cause shoreline changes and erode coastal regions. Kuta District is one of the coastal areas on the island of Bali that are threatened with constant sediment erosion every year. One way to increase understanding of the wave and its effect on the coastal areas is through numerical modeling. This study aimed to determine the pattern of wave and wave strength distribution on the west coast of the Kuta district. The Finite Volume Coastal Ocean Model and SWAVE (FVCOM-SWAVE) coupling model that was used in this study utilized the Finite Volume method of computation with the unstructured triangular grid. The results showed that in West Season (December-January-February), the range of mean significant wave heights on the west coast of Kuta District is 0.05 - 0.2 m, and the wave power ranged from 1 to 30 W/m with the most considerable value of significant wave heights and wave power were encountered in January. Water areas near land have greater wave heights and wave power than areas far from land, except around Ngurah Rai International Airport. The movement of waves primarily comes from the southwest, the Bali Strait, to the east and is divided by the runway into following the northern and southern parts of the coast. Thus, the most significant wave height ??and wave power values are found in the waters near Kuta beach and Legian beach.
Analisis Jesikapna Callia Br Guru Singa; I Wayan Nuarsa; I Gusti Ngurah Putra Dirgayusa
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p08

Abstract

Coastline changes are a process that occurs continuously due to movement of sediments, ocean currents, waves, and land use. The impact of this process can be in the form of abrasion and accresion. Due to the huge waves on the south coast, the beaches along the Klungkung Regency are often experience abrasion and accresion. Detection of coastline can use remote sensing methods. This study uses Sentinel-2 satellite images with a spatial resolution of 10 ms to extract the coasline of Klungkung Regency in 2015 and 2020. The coastline extraction method used is the threshold value and band ratio approach. In this study, the digital coastline analysis system (DSAS) toolbox was used for coastline change analysis. The analysis result of coastline change in Klungkung Regency in 2015 and 2020 shows that Gunaksa Village experienced the highest abrasion of 108,6 meters, while Negari Village experienced the highest accrestion of 46,98 meters. The highest rate of coastline change in Klungkung Regency is the abrasion range from 0,058 m/year to 1,846 m/year, while those accretion range from 0,055 m/year to 1,084 m/year.
Analisis Kesesuaian Dan Daya Dukung Kawasan (DDK) Wisata Rekreasi Pantai Di Pantai Yeh Gangga, Tabanan, Bali I Pande Made Lanang Kertadana; I Gusti Ngurah Putra Dirgayusa; Ni Luh Putu Ria Puspitha
Journal of Marine and Aquatic Sciences Vol 9 No 1 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i01.p02

Abstract

Yeh Gangga Beach is growing tourist attraction in Tabanan Regency, Bali. Tourism activities have a close bond with natural resources owned by the tourist area. The feasibility/suitability of a tourist area and the number of visitors that can be accommodated in tourist activities is important to know, so as not to cause disruption to both tourist activities and the environment and the direction of development. This research has a purpose, namely knowing the Tourism Conformity Index and Regional Support Capacity for coastal recreation activities. The method used is purposive field observation sampling at 4 point stations and interviewing tourists by accidental random sampling. The data used is primary and secondary data, with analysis of The Tourism Conformity Index and Regional Carrying Capacity. The results of the study obtained an average area for tourism activities of 17.98 m2 and time for tourism activities for 2 hours 14 minutes per day with a value of Regional Support Capacity of 3,273 people/day, 98,190 people/month and 1,178,280 people/year. The Tourist Conformity Index shows a value of 85.11% at station 1, 86.90% at station 2, 77.97% at station 3, and 80.35% at station 4. With this area Yeh Gangga Beach is still under carrying capacity and still suitable for beach recreation activities in accordance with the utilization zone of beach recreation tourism in Yeh Gangga.
Indeks Kesesuaian Wisata Di Pantai Pemuteran Buleleng, Bali I Kadek Aldi Wahyu Andika Maha Putra; I Gusti Ngurah Putra Dirgayusa; I Gusti Bagus Sila Dharma
Journal of Marine Research and Technology Vol 6 No 2 (2023): AGUSTUS 2023
Publisher : Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMRT.2023.v06.i02.p04

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.
Co-Authors AAK Aswan Deva Abd. Rahman As-syakur Andreas Pratama Togatorop Basyaasyah Rahmaningrum Pettalolo Br Sitepu, Fany Ekaristy Carolina Asrin Desy Shintya Irene Dwi Budi Wiyanto Elok Faiqoh Febriyanto Arifin Gede Surya Indrawan Heny Hayati Heru Wicaksono I Dewa Nym. Nurweda P., I Dewa Nyoman Nurweda I Gede Hendrawan I Gede Surya Indrawan I Gusti Ayu Dian Indraswari I Gusti Ayu Ricca Mahatma Putri I Gusti Bagus Sila Dharma I Gusti Bagus Sila Dharma I Kadek Aldi Wahyu Andika Maha Putra I Ketut Budiarta I Ketut Wija Negara I Komang Subandi I Made Raditya Putra I Made Rai Januatmika I Made Satya Prayoga I Made Subali Arta Arta I Pande Made Lanang Kertadana I Putu Aditya Budi Wacika I Putu Oka Saduarsa I Wayan Artadana I Wayan Nuarsa Ida Ayu Made Inten Melinia Ida Bagus Ketut Ravidhya Krisna Sekar Ida Bagus Putu Adi Gita Saputra Ika Arofa Setiawati Jenisia Barros Soares Jesikapna Callia Br Guru Singa Kadek Weda Ari Bhawana Kadek Widya Suryaningsih Muhammad Fakhri Ramadhani Ngakan Putu Purnaditya Ni Kadek Apriantari Ni Luh Putu Ria Puspitha Ni Luh Putu Ria Puspitha Ni Nyoman Desi Kusuma Dewi Ni Nyoman Pujianiki Ni Wayan Loviasari Nur Asni Puspita Sari Pande Chrisna Aryasuta Puspitha, Ni Luh Putu Ria Putra, I Nyoman Giri Putu Adi Prawira Riris Christiani Gultom Rizky Ramadhan Siahaan, Jonathan M Timothy Kenoly Trisilia Mulyawati Anggraeni Wattimena, Adolf Krisna Mahendra Widiastuti Karim Widiastuti Widiastuti Yulianto Suteja