Buton Island Research Articles

Petrogenesis of Metamorphic Rock in the Mukito Formation at Sorawolio Region, Bau-Bau City, Buton Island, Southeast Sulawesi Province, Indonesia

The petrogenesis study of the metamorphic rocks of the Mukito Formation was carried out in the Sorawolio area, Bau-Bau City, Buton Island, Southeast Sulawesi Province, Indonesia. This research area is included in the southern part of the Buton sheet with coordinates S 5⁰23'40.8'' and E 122⁰43'44.9''. The aim of this research is to determine the petrogenesis of metamorphic rocks which includes determining the rock type, facies, type of metamorphism and protolith. The research methods used include megascopic and microscopic analysis of rocks in the form of petrographic analysis which includes identification of mineral content and rock texture and geochemical analysis in the form of XRF tests to determine the main oxide elements in metamorphic rock samples. Data obtained from the results of petrographic analysis show that the research area consists of several types of metamorphic rock, namely serpentinite, phyllite, chlorite schist, hornblende schist and amphibolite. The metamorphic rocks in the research area are included in the greenschist facies and amphibolite facies with regional metamorphism types as well as protoliths from igneous rocks in the form of basalt rock which were formed in the tholeiitic oceanic-island tectonic environment which is a convergent complex characterized by continental origin in the magma series in the form of the tholeiitic series and calc -alkaline series.

Identifying the effect of adding coconut coir on the characteristics of the top layer of pure natural buton asphalt concrete wearing course (AC-WC)

Buton Asphalt is natural asphalt originating from Buton Island (Indonesia), with the potential deposit amount reaching up to 662 million tons. This substantial domestic mining potential must be utilized for domestic road needs and to boost the country's economy. However, Buton asphalt's utilization is minimal compared with imported oil asphalt, which reached a usage rate of up to 94 % in 2022. Therefore, as a form of a solution-oriented policy, Buton asphalt is included as one of the 21 commodities in the Strategic Roadmap for Downstream Investment in Indonesia, followed by various supportive regulations for developing this Buton asphalt product. One of the leading products the government targets is natural pure Buton asphalt. This product consists of >99 % bitumen content after extraction, also called Pure Buton Asphalt. The idea was to modify pure Buton asphalt with coconut coir to increase the Marshall Stability and Dynamic Stability values to make the asphalt mixture more resistant to vehicle loads and rutting. The tests were conducted to determine the optimum asphalt content (OAC) of the mixtures, Marshall's Stability comparison, and the dynamic stability test using a Wheel Tracking Machine to identify the comparison of permanent deformation. This study analyzed the Marshall characteristics and dynamic stability characteristics with variations in coconut coir content of 0.5 %, 0.75 %, and 1 % by weight of asphalt and variations in coconut coir length of 0.5 cm, 1 cm, and 1.5 cm. Based on the results of this study, the optimum asphalt content in this study is 6.76 %, where pure Buton Asphalt modified with coconut coir has an increase in Marshall's stability value and dynamic stability value compared to pure Buton asphalt without additional coconut coir

Geographic information systems and big data analytics: optimizing digital adoption to develop tourism in Buton Islands, Indonesia

This research aims to optimize tourism potential in the Buton Islands, Indonesia, using Geographic Information Systems (GIS) and Big Data Analytics. The study addresses the low tourism potential in the region and constraints in tourism development, such as lack of information and data. Qualitative methods include document analysis, literature studies, and focus group discussions. Quantitative methods involve surveying respondents about the use of GIS and Big Data Analytics in tourism development. Data was collected from government documents, online news, and direct observation of tourist sites. The results emphasize the importance of IT and GIS in developing the tourism sector in the Buton Islands, particularly in Baubau City and South Buton Regency. GIS is crucial for identifying and managing tourism potential, while Big Data Analytics helps optimize development by analyzing visitation trends, tourist preferences, and consumer behavior patterns. The integration of these technologies can improve tourist experience and efficiency of tourism-related public services. By integrating GIS, Big Data Analytics, and Information Technology, local government and stakeholders can collaborate to create a superior tourism experience, support local economic growth, and ensure the sustainability of the natural and cultural environment in the Buton Islands.

Tinjauan Kinerja Layanan dan Kepuasan Penumpang Angkutan Penyeberangan Pure - Raha

The Pure-Raha ferry port in Southeast Sulawesi Province is a port that serves passenger and goods crossings connecting the mainland of Buton Island and Muna. Good service quality is one of the determining factors for the company's success. The research method is structured through interviews with respondents by answering the questions in the questionnaire. The analysis used uses Importance Performance Analysis (IPA) and Customer Statistics Index (CSI). The research results show that the consumer satisfaction index for the service performance of the Pure-Raha ferry port in Southeast Sulawesi Province is 0.71. This shows that consumers are satisfied with the quality of port services by 71%. However, the management needs to create a special queue for motorbike riders.

Phytoplankton in the Anchialine Habitat of Red Shrimp (Parhippolyte uveae) at Mangrove Ecosystem Waters

The anchialine habitat waters of this study is located at mangrove ecosystem around Koguna Beach area, Buton Island, Indonesia. It is a closed water, isolated from the sea, and inhabited by Parhippolyte uveae red shrimp. The existence of phytoplankton in this habitat can be used to determine the availability of natural food and the water quality of this shrimp’s habitat. This study was conducted to examine the presence of phytoplankton in the anchialine habitat of red shrimp. Phytoplankton samples were obtained by filtering water using Plankton Net. Meanwhile, several biological indexes such as the diversity index, evenness index, and dominance index were used to analyze the phytoplankton community. The result showed that this habitat was dominated by phytoplankton from the classes Bacillariophyceae, Florideophyceae, and Globothalamea with a total of 13 genera in September 2021 and Bacillariophyceae, Cyanophyceae, Dinophyceae, and Globothalamea with a total of 18 genera in December 2021. The most common type of phytoplankton found in the red shrimp habitat during the study was Navicula sp. with a ban of 1436 cells L-1 and 479 cells L-1 in September 2021 and December 2021, respectively. The diversity index of phytoplankton in this habitat was low, meanwhile, the index of evenness and dominance indicated that this habitat was of good quality (evenness index was high and dominance index was low). This study can be used as a basic information for further research on the management control for this species habitat.

PT PERTAMINA MOR VI’S STRATEGY TO FACE ASPHALT IMPORT PROHIBITION

This research was conducted because of the import prohibition phenomenon by the President of the Republic of Indonesia (RI), Joko Widodo, who stated that asphalt imports would stop in 2024. This phenomenon is fascinating because Indonesia also has a significant demand for asphalt compared to production. This phenomenon also impacts PT Pertamina MOR VI, a state-owned company involved in the asphalt business. This research was conducted to determine the strategy of PT Pertamina Marketing Operation Region (MOR) VI to deal with this phenomenon. Research data was collected through an interview process. The results obtained from the interview show that the first strategy implemented was to increase the limitations of the asphalt refinery at the Pertamina Refinery Unit IV and asphalt production on Buton Island. After overcoming production limitations, PT Pertamina MOR VI focused on setting national product prices based on the Argus Asphalt Index, Opex, and sales margins to compete with global asphalt prices and competitors. The final strategy is how PT Pertamina MOR VI maintains and increases its asphalt marketing market share among agents. These three strategies effectively overcome the effect of asphalt import prohibition in 2024.

ASPAL: POTENSI WISATA HERITAGE DI PULAU BUTON (STUDI KASUS DI DESA WINNING)

<em>Buton Island in Southeast Sulawesi is famous for its asphalt content, one of the asphalt mining sites that is rich in heritage tourism potential is in Winning Village, Buton Regency. This research aims to provide an overview of the activities that are still actively carried out in the mining area and also what heritage tourism potential exists in the asphalt mining area in Winning Village. The method used is descriptive qualitative. Primary data was collected through field observations and interviews while secondary data came from literature review and documentation. The mining activities currently still being carried out are asphalt mining activities, which are then processed into several stages to become smaller asphalt rocks ready to be sent through the Banabungi port in the Pasarwajo area. While the potential for heritage tourism in this area is in the form of a complex area of former offices, hospitals, and asphalt workers' settlements with the condition of buildings that are still standing and there has not been any change or renovation which has high historical value. The potential for heritage tourism attractions is very high, existing amenity is still very limited and accessibility is quite good.</em>

Mapping of Oldeman Agro-Climatic Zone Based on Climate Hazards Group Infrared Precipitation with Station Database in Southeast Sulawesi

Long climate data information will be very useful for the sustainable agricultural sector in determining physiological processes, growth to plant productivity. The Climate Hazard Group Infrared Precipitation with Station (CHIRPS) data is used as a rainfall database for the latest Oldeman agro-climatic zone mapping in Southeast Sulawesi Province. CHIRPS data for 1981-2021 was processed using the Inverse Distance Weighted and Overlay interpolation methods through the Geographic Information System. The results showed that there were thirteen Oldeman agro-climatic zones in Southeast Sulawesi Province, namely B1 (23,71%), B2 (1,97%), B3 (0,22%), C1 (13,48%), C2 (23,21%), C3 (4,64%), D1 (7,36%), D2 (16,71%), D3 (1,28%), D4 (0,00%), E1 (2,92%), E2 (2,32%), dan E3 (2,18%). Zones B1, B2, and B3 are in the northwest, east, and southeast of the area which are very suitable for cultivating two paddy crops followed by planting various types of secondary crops (palawija) during the dry season. Zones C1, C2, and C3 which stretch from west to east are suitable for one-time planting of paddy and two crops of palawija crops. Zones D1, D2, D3, and D4 are spread from the northwest to the southwest to most areas of Muna Island and Buton Island which are suitable for one short-lived paddy planting and one paddy or palawija crop. The agro-climatic zones E (E1, E2, and E3) in the northwest and southwest are only suitable for one crop of palawija crop, depending on rain. The resulting agro-climate map can be used as a reference for cropping patterns that are suitable for the region of Southeast Sulawesi Province.
 Keywords: Agro-Climatic; CHIRPS; Oldeman; Southeast Sulawesi

Pengaruh Kebisingan Terhadap Kelelahan dalam Pekerjaan Pembangunan SUTT 150 kV Raha Bau-Bau Section 1

The construction of transmission line is one of the national strategic projects to even out development, especially with regard to the need for electric power. The construction of transmission line Raha – Baubau will connect two islands in Southeast Sulawesi Province, namely Muna Island and Buton Island. PT PLN (Persero) UPP Sulawesi Tenggara as the project director on this project is very concerned about K3 (Occupational Safety and Health) starting from the planning, work, testing and operation stages. Measurements of the work environment have been routinely carried out every semester but there has never been a study on the impact of noise on worker fatigue in the field. The sources of noise during this construction work include breakers, concrete mixers, ironworks, erection towers and stringing machines. With a total workforce of ±80 people and work intensity/noise exposure of 8 hours/day and the impact of noise risks that are not yet known, it is necessary to conduct research to identify and mitigate the risks of fatigue due to noise in the construction work of transmission line Raha-Baubau Section 1.

Characteristics of Asbuton Mix Using Geopolymer Fly Ash Coarse Aggregate as a Substitute for Natural Aggregates

The increase in the number of road construction projects has led to an increase in the need for road pavement materials (aggregate and asphalt). Currently it takes about 1.6 million tonnes/year of asphalt, as well as aggregate. Seeing these conditions, it is necessary to anticipate the use of waste or natural resources that have not been utilized optimally. In this study, fly ash (PLTU waste) was used as aggregate and Asbuton (Buton Island rock asphalt) was used as a binder for the asphalt mixture. As an effort to save energy, the stirring system is cold. Based on the volumetric characteristics of the artificial coarse aggregate, it only meets the specifications for the VMA value, while the VIM and VFB values have not been met. The mechanical properties (stability and flow values) of the cold asphalt mixture on the replacement of natural aggregate with 25% artificial aggregate met the requirements, but did not meet the Marshall Quotien requirements

PENINGKATAN POTENSI WISATA LA BOLONTIO TERHADAP PENGEMBANGAN KEMAJUAN PENDAPATAN PEMERINTAH DESA DI SIOMPU KABUPATEN BUTON SELATAN

One of the potentials that can be increased to Village Original Income (PADes) for villages in Indonesia is the tourism sector. Touring in the village has become a separate choice for tourists. Tourists who like tourist attractions in the village are not only interested in its natural beauty but also interact with local people. Tourist attractions provided by various villages in Siompu are one of the goals of the village government in increasing village income as a form of village development and progress. The government manages various places that are considered to be developed as a source of extraordinary income and progress in managing villages and can compete in the world of tourism which shows the natural beauty that exists in their villages as seen in Siompu, one of the islands or Kaimbula Village which has natural beauty and the ocean. The village government takes advantage of the beauty of the coast of the island in the village of Kaimbulawa as a form of developing tourism potential in advancing the village and being able to compete with other islands. kaimula village is located on a plateau and the lowland is the ocean so the location of where they live requires them to live in the highlands. However, the beauty of the coast which is quite stunning is utilized by the village government as a form of economic income by making Labolontio a tourist spot. The recreation area is also a historical place called Labolontio which is very famous in Buton Island. What makes this tourist spot interesting to visit is not only the beauty of the beach and nature, but also historical places that can be visited and a variety of cultures that attract visitors or tourists.

Eksistensi Bahasa Wolio di Kalangan Penutur Millenial di Kota Baubau


 Abstract
 As one of the 718 regional languages ​​in Indonesia, Wolio is the language spoken in the Buton Islands region. This study was conducted to determine the extent of the existence of the Wolio language in Baubau City, especially among Millennial speakers. This research is a research that applies a qualitative and quantitative approach. Qualitative data was obtained from interviews, while quantitative data was obtained from questionnaires. This study applies a sociolinguistic study of language shift and maintenance. The sample of this research is Wolio language speakers who are included in the millennial generation (born between 1981 – 1994). The results of this study indicate that currently the average active speaker of the Wolio language is over 40 years old. Only in 2 sub-districts showed a positive trend towards the use of the Wolio language among millennial speakers in the city of Baubau. Therefore, currently the status of the Wolio language in the city of Baubau can be categorized as a local language that is threatened with extinction if no improvement is made or efforts are not made to maintain the Wolio language

Geology and Seabed Topography Research to Support the Implementation of Indonesia’s Submarine Cable Corridor Buton Island to EEZ (Hub Indonesia - USA)

The Indonesian Government has established pipelines and cable corridors through the Decree of the Minister of Marine Affairs and Fisheries Number 14 of 2021 concerning Submarine Pipelines and Cables. Indonesia’s strategic position in the world has become a favorite route for laying submarine cables, connecting Australia and Indonesia with America and other countries. The purpose of this study is to conduct a technical study of the existing ratified route corridor on the geological conditions of the Indonesian waters. The method used is path analysis of geological and geomorphology conditions by compiling class criteria related to and increasing risks to geological conditions. The results of the geological analysis show that several submarine cable lines pass through volcanic areas and faults; also, there are areas with a seabed side slope of >20%. This condition can affect the cable laying process, operations, and vulnerability. In addition, it is necessary to rearrange the paths that have a high hazard vulnerability to disasters and other activities. The results of this study are in the form of recommendations for proposed corridor revisions that reduce constraints related to geology and geomorphology.

Pengaruh Proses N-Hexane Solvent Extraction pada Ekstraksi Bitumen dari Aspal Buton sebagai Bahan Baku Minyak Bumi Nonkonvensional

Buton tar sand or commonly known as asbuton is a natural tar sand deposit found in Buton Island, Southeast Sulawesi. The reserve of asbuton is approximately 179.1 million tons with a hypothetical resource of oil amounting to 10,577,646,000 liters. Asbuton is potentially used as an alternative raw material for non-conventional oil. Non-conventional oil from asbuton could be used as a substitute to the depleted resources of conventional oil in Indonesia. Asbuton non-conventional oil could be prepared by extracted bitumen, a heavy hydrocarbon material in asbuton tar sand from its mineral. The bitumen then could be further processed to produce non-conventional oil. Various studies have been carried out to extract bitumen with various solvents. This study uses direct extraction and soxhlet extraction methods with n-hexane solvent to obtain the most optimum percentage of bitumen. Direct extraction method is done by varying the temperature (40, 45, 50, 55, 60oC) and the weight ratio of asphalt and n-hexane solvent (1:20; 1: 30; 1:40; 1:50). Based on the results of research that has been done, the highest percentage of bitumen yield is formed at 40oC and at a ratio of 1:20 that is 88.60% for the direct extraction method. The 1:40 ratio of soxhlet solvent extraction has the highest bitumen yield of 90.97%. After that, a characteristic analysis was carried out using FTIR with a strong absorbance in the area of 1423.47; 1033.85; 873.75; 709.80 cm-1 representing the C-H and C = H groups.

Determination of Begomovirus on chili plants (Capsicum sp.) in Buton and Muna Islands, Southeast Sulawesi, Indonesia

Abstract. Widodo CJ, Taufik M, Khaeruni A, Mallaranggeng R. 2023. Determination of Begomovirus on chili plants (Capsicum sp.) in Buton and Muna Islands, Southeast Sulawesi, Indonesia. Biodiversitas 24: 741-751. Begomovirus disease is one of the main factors inhibiting chili cultivation which could harm plants and result in crop failure. This study aimed to determine the symptoms of begomovirus disease in chili plants in Buton and Muna, Southeast Sulawesi. The methods used are disease incidence survey, insect vector observation, molecular identification using the polymerase chain reaction (PCR) technique, and Sanger sequencing (Applied Biosystem 3500). The survey was conducted in Southeast Sulawesi province, covering Bau-Bau City, Buton Regency, Central Buton, North Buton, Muna, and West Muna. The results showed that the incidence and severity of Begomovirus disease were observed highest in Buton islands, 73% and 49.5% (Buton City), followed by North Buton, Central Buton, and Buton, with the incidence and severity of Begomovirus, respectively, of 71.74% and 59.5%; 69.32% and 51.5%; and 68% and 61.5%. While in Muna Regency, 63.16% and 38.5%, West Muna, 73.79% and 53.50%. On the other hand, the highest percentage of the whitefly population was in Bau-Bau City, 24%, while the lowest was in West Muna, 15.5% supporting this observation. Furthermore, PCR analysis successfully amplified symptomatic isolates from Buton and Muna islands at a band length of 580 bp. On the other hand, Sanger sequencing analysis revealed the existence of the Indonesian Pepper Yellow Leaf Curl Virus (PepYLCIV) with more than 96% genetic homology to the Gene Bank data of MN094866 PepYLCIV Capsicum annuum Indonesia and MN738463 PepYLCIV Chili pepper Indonesian. This information is the first report of the presence of Begomovirus on the two islands.

Asimilasi Animisme Dalam Kegiatan Tahlilan: Studi Dakwah Bil’ Hikmah Di Kecamatan Siompu Barat

After the spread of Islam in the Buton islands brought by Sheikh Abdul Wahid for the second time in 1948 H. Then the intellectuals or Islamic intellectuals who came from Buton. Taking the initiative to develop teachings throughout the coastal areas of Buton, especially on the western coast of Siompu Island, where one of the teachings is teaching about tahlilan. The purpose of this study was to find out how the community understands the tahlilan tradition in West Siompu sub-district? And to find out the method of preaching Bil' wisdom in understanding the tahlilan tradition in Siompu Barat sub-district? Data collected using data collection methods, namely: observation, interviews and documentation methods. The results of this study can be recommended for further research on the history of Buton. In particular, the western Siompu area. As an effort to add a little reference and knowledge about the history of the arrival of Islam in the land of Buton.

Diversity of arbuscular mycorrhizal fungi in asphalt post-mining land in Buton Island, Indonesia

Abstract. Tuheteru FD, Husna, Albasri, Effendy HM, Arif A, Basrudin, Tuheteru EJ, Mulyono S, Irianto RSB. 2022. Diversity of arbuscular mycorrhizal fungi in asphalt post-mining land in Buton Island, Indonesia. Biodiversitas 23: 6327-6334. Studies on the presence and diversity of Arbuscular Mycorrhizal Fungi (AMF) on overburden (OB) and asphalt post-mining areas in Buton Island are still limited. The purpose of this study was to examine the presence and diversity of AMF on OB and asphalt post-mining stockpiles in Buton Island, Southeast Sulawesi Province. The sampling of soil and roots of successional plants was carried out at eight post-mining sites at the IUP Kabungka (Pasarwajo) (6 sites) PT. WIKA Aspal and IUP Lawele (2 sites), PT. WIKA Bitumen. The AMF spores were isolated using the wet filter pour method, followed by the identification of AMF which was done by observing the morphology of AMF spores. The results showed that all successional plants were in symbiosis with AMF, which was indicated by the existence of AMF structure in plant roots with the percentage of AMF colonization ranging from 5 - 95%. The number of spores per 50 g ranged from 1 to 9 spores. A total of 9 AMF species were found to belong to five genera, i.e., Claroideoglomus, Haloatospora, Glomus, Gigaspora, and Cetraspora from three families. Claroideoglomus claroideum was found to be the most dominant species isolated with the high occurrence and the highest Importance and Shannon-Wiener Diversity Indices followed by Haloatospora cf. pansihalos, Glomus sp. 5, and Glomus sp. 4. This study also showed that the AMF diversity index differed among locations. The presence of AMF can accelerate the emergence and development of adaptive plants on post-asphalt mining land in Buton Island.

ADVENTURE TOURISM RISK, ENVIRONMENTAL IMAGE, AND REVISIT INTENTION: AN EMPIRICAL STUDY OF UNDERWATER CAVE DIVING TOURISM IN BUTON ISLAND, INDONESIA

Purpose - Most previous research on tourism analysis,, focuses more on recreational tourism. This study aims to analyze risk perception by using adventure tourism risk, that is; equipment, physical, psychological, social, and financial risks, and their effects on environmental image and revisit intention. Design - This study adopts the perceptions of tourists who used the services of three dive operators from January to March 2022: Rock n Roll Diver, Sulawesi Dive Trek, and Wasage Divers. Methodology - The research data was collected from 98 respondents, namely tourists who did cave diving tours in Buton Island, Indonesia. Approach - The hypothesis test is conducted using the Partial Least Squared (PLS) approach, and this test structurally accounts for both direct and indirect effects. Findings - The results of the study provide information that adventure risk, include; risk of equipment, physical, psychological, social and financial affects environmental image and revisit intention, either directly or indirectly. Environmental image affects revisit intention and environmental image have a mediating effect adventure risk to revisit intention. Originality of the research - This study tries to build a causal relationship between adventure tourism risk, and destination image, especially environmental image and its effect on revisit intention in underwater cave diving tourism in Buton Island, Indonesia.. Originality of the research is equipment, physical, psychological, social, and financial risks, and their effects on environmental image and revisit intention that to be focused on underwater cave diving tourism.

Composition, Structure and Diversity of Vegetation on Asphalt Post-Mining Sites in Buton Island, Indonesia

Composition, Structure and Diversity of Vegetation on Asphalt Post-Mining Sites in Buton Island, Indonesia

PENERAPAN AUGMENTED REALITY (AR) UNTUK PEMETAAN GEDUNG KAMPUS UNIDAYAN MENGGUNAKAN ANDROID

<em>Dayanu Ikhsanuddin University or better known as Unidayan is the first private university on Buton Island, located in Baubau City. The Unidayan campus consists of faculties located in different buildings. It takes time for different building layouts to determine the location of the faculty or study program as well as the intended lecture hall, therefore an application is needed that can make it easier for students to find out the location of the rooms in the faculty building. This study aims to design an application for the recognition of the Unidayan campus building using Android-based AR technology. The research resulted in an android application with Augmented Reality technology as an introduction media for Unidayan campus buildings with QR Code objects to display building plans.</em>